Re: Wild Card Mask Puzzle - fun in the sun
access-list 1 permit 0.0.0.1 255.255.255.24 ^_^ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wild Card Mask Puzzle - fun in the sun
x.x.x.1 0.0.0.230 answer would be correct for the PIX firewall (they use reverse wildcard mask - match 1, do_not_care 0) but in router case should not this be x.x.x.1 0.0.0.24? if we put this in binary: (forget about first three bytes ) 8 7 6 5 4 3 2 1 1 - 0 0 0 0 0 0 0 1 9 - 0 0 0 0 1 0 0 1 17 - 0 0 0 1 0 0 0 1 25 - 0 0 0 1 1 0 0 1 it gives us the following - we want 1 in the position 1. 0's in 8,7,6,3,2 and do_not_care in 5 and 4. For the access- lists on Cisco routers 0 is match, 1 is do_not_care so wildcard mask should be 0 0 0 1 1 0 0 0 which gives us 24 x.x.x.1 0.0.0.24 sutisfies this condition RGRDS, Evgeny -- *** Please DO NOT send replyes just directly to me, post them to the Newsgroup as well *** ""Nigel Taylor"" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Well, in light of everyone jumping in there I taught I might do the same. > Here what fell out of this simple mind. > > access-list xx permit x.x.x.1 0.0.0.230 - ask me how I got this? > > Man, I was thinking now I'm all screwed up... I can't wait to see the > answer, could my answer be right... > > Chuck/Mike "free the rest of us" please... > > Nigel. > > > - Original Message - > From: Chuck Larrieu <[EMAIL PROTECTED]> > To: John Neiberger <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Tuesday, July 04, 2000 5:29 AM > Subject: RE: Wild Card Mask Puzzle - fun in the sun > > > > I'm not human tonight. > > > > A paraphrase from Marlowe's soliloquy in The Little Sister, by Raymond > > Chandler. > > > > This, by the way, is why it takes me so damn long to master these Cisco > > things. I keep getting distracted by my liberal arts educational > background. > > > > Chuck > > > > PS and I am not commenting on right or wrong because 1) let's see some > more > > response and 2) it's not my puzzle anyway. Mike otta get the credit and > have > > the fun of judging. :-> > > > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > John > > Neiberger > > Sent: Monday, July 03, 2000 8:59 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Wild Card Mask Puzzle - fun in the sun > > > > Ok, I'll bite. My official guess is: > > > > access-list xx permit ip x.x.x.1 0.0.0.24 > > > > If I'm correct, I'll post how I did it later...right now I'm still > > wondering... :-) > > > > Chuck, you're mean...just plain mean! > > > > Good luck all! > > > > John Neiberger > > > > > > > > > > > Come on, everyone. Where are you folks on this one? All you CCNA > > candidates. > > > Show us your stuff. All you ACRC students - give it a try. I can't > > believe > > > we haven't had a go round about this one. > > > > > > For the record, I have already filed my answer privately. It is a fun > > > puzzle, and one that will demonstrate your thinking skills. > > > > > > Who knows the answer? How do you know you're right > > > > > > Chuck > > > > > > > > > Puzzle posed by Mike Williams: > > > > > > Make a (single line) access-list that will only allow traffic from > > addresses > > > matching the following model: > > > > > > x.x.x.1 > > > x.x.x.9 > > > x.x.x.17 > > > x.x.x.25 > > > > > > It's along the same lines as the question you posed, but a little more > > > challenging since you only want those 4 addresses to pass through. > > =) > > > > > > > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > > > Michael L. Williams > > > Sent: Wednesday, June 28, 2000 7:27 PM > > > To: [EMAIL PROTECTED] > > > Subject: Re: ACL Question > > > > > > My newsgroup reader "claims" to have posted my response to this when it > > was > > > first asked. And for the record, I did have the correct answer and > > > explanation too =P. So instead of posting yet another explanation on > how > > to > > > filter odd/even IP addresses, I'll post a similar but different > question: > > > > > > Make a (single line) access-list that will only allow traffic from > > addresses > > > matching the following model: > &g
Re: Wild Card Mask Puzzle - fun in the sun
I concur. Originally, I got the 0.0.0.24, but someone said something about wildcard vs subnet masking, I did my math and voila! Looks right on paper, but I don't currently have a router to try it on. - Original Message - From: "Nigel Taylor" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "John Neiberger" <[EMAIL PROTECTED]>; "Chuck Larrieu" <[EMAIL PROTECTED]> Cc: "Bryant Andrews" <[EMAIL PROTECTED]> Sent: Tuesday, July 04, 2000 1:56 AM Subject: Re: Wild Card Mask Puzzle - fun in the sun > Well, in light of everyone jumping in there I taught I might do the same. > Here what fell out of this simple mind. > > access-list xx permit x.x.x.1 0.0.0.230 - ask me how I got this? > > Man, I was thinking now I'm all screwed up... I can't wait to see the > answer, could my answer be right... > > Chuck/Mike "free the rest of us" please... > > Nigel. > > > - Original Message - > From: Chuck Larrieu <[EMAIL PROTECTED]> > To: John Neiberger <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Tuesday, July 04, 2000 5:29 AM > Subject: RE: Wild Card Mask Puzzle - fun in the sun > > > > I'm not human tonight. > > > > A paraphrase from Marlowe's soliloquy in The Little Sister, by Raymond > > Chandler. > > > > This, by the way, is why it takes me so damn long to master these Cisco > > things. I keep getting distracted by my liberal arts educational > background. > > > > Chuck > > > > PS and I am not commenting on right or wrong because 1) let's see some > more > > response and 2) it's not my puzzle anyway. Mike otta get the credit and > have > > the fun of judging. :-> > > > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > John > > Neiberger > > Sent: Monday, July 03, 2000 8:59 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Wild Card Mask Puzzle - fun in the sun > > > > Ok, I'll bite. My official guess is: > > > > access-list xx permit ip x.x.x.1 0.0.0.24 > > > > If I'm correct, I'll post how I did it later...right now I'm still > > wondering... :-) > > > > Chuck, you're mean...just plain mean! > > > > Good luck all! > > > > John Neiberger > > > > > > > > > > > Come on, everyone. Where are you folks on this one? All you CCNA > > candidates. > > > Show us your stuff. All you ACRC students - give it a try. I can't > > believe > > > we haven't had a go round about this one. > > > > > > For the record, I have already filed my answer privately. It is a fun > > > puzzle, and one that will demonstrate your thinking skills. > > > > > > Who knows the answer? How do you know you're right > > > > > > Chuck > > > > > > > > > Puzzle posed by Mike Williams: > > > > > > Make a (single line) access-list that will only allow traffic from > > addresses > > > matching the following model: > > > > > > x.x.x.1 > > > x.x.x.9 > > > x.x.x.17 > > > x.x.x.25 > > > > > > It's along the same lines as the question you posed, but a little more > > > challenging since you only want those 4 addresses to pass through. > > =) > > > > > > > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > > > Michael L. Williams > > > Sent: Wednesday, June 28, 2000 7:27 PM > > > To: [EMAIL PROTECTED] > > > Subject: Re: ACL Question > > > > > > My newsgroup reader "claims" to have posted my response to this when it > > was > > > first asked. And for the record, I did have the correct answer and > > > explanation too =P. So instead of posting yet another explanation on > how > > to > > > filter odd/even IP addresses, I'll post a similar but different > question: > > > > > > Make a (single line) access-list that will only allow traffic from > > addresses > > > matching the following model: > > > > > > x.x.x.1 > > > x.x.x.9 > > > x.x.x.17 > > > x.x.x.25 > > > > > > It's along the same lines as the question you posed, but a little more > > > challenging since you only want those 4 addresses to pass through. > > =) > &g
Re: Wild Card Mask Puzzle - fun in the sun
Well, in light of everyone jumping in there I taught I might do the same. Here what fell out of this simple mind. access-list xx permit x.x.x.1 0.0.0.230 - ask me how I got this? Man, I was thinking now I'm all screwed up... I can't wait to see the answer, could my answer be right... Chuck/Mike "free the rest of us" please... Nigel. - Original Message - From: Chuck Larrieu <[EMAIL PROTECTED]> To: John Neiberger <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Tuesday, July 04, 2000 5:29 AM Subject: RE: Wild Card Mask Puzzle - fun in the sun > I'm not human tonight. > > A paraphrase from Marlowe's soliloquy in The Little Sister, by Raymond > Chandler. > > This, by the way, is why it takes me so damn long to master these Cisco > things. I keep getting distracted by my liberal arts educational background. > > Chuck > > PS and I am not commenting on right or wrong because 1) let's see some more > response and 2) it's not my puzzle anyway. Mike otta get the credit and have > the fun of judging. :-> > > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of John > Neiberger > Sent: Monday, July 03, 2000 8:59 PM > To: [EMAIL PROTECTED] > Subject: Re: Wild Card Mask Puzzle - fun in the sun > > Ok, I'll bite. My official guess is: > > access-list xx permit ip x.x.x.1 0.0.0.24 > > If I'm correct, I'll post how I did it later...right now I'm still > wondering... :-) > > Chuck, you're mean...just plain mean! > > Good luck all! > > John Neiberger > > > > > > > Come on, everyone. Where are you folks on this one? All you CCNA > candidates. > > Show us your stuff. All you ACRC students - give it a try. I can't > believe > > we haven't had a go round about this one. > > > > For the record, I have already filed my answer privately. It is a fun > > puzzle, and one that will demonstrate your thinking skills. > > > > Who knows the answer? How do you know you're right > > > > Chuck > > > > > > Puzzle posed by Mike Williams: > > > > Make a (single line) access-list that will only allow traffic from > addresses > > matching the following model: > > > > x.x.x.1 > > x.x.x.9 > > x.x.x.17 > > x.x.x.25 > > > > It's along the same lines as the question you posed, but a little more > > challenging since you only want those 4 addresses to pass through. > =) > > > > > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > > Michael L. Williams > > Sent: Wednesday, June 28, 2000 7:27 PM > > To: [EMAIL PROTECTED] > > Subject: Re: ACL Question > > > > My newsgroup reader "claims" to have posted my response to this when it > was > > first asked. And for the record, I did have the correct answer and > > explanation too =P. So instead of posting yet another explanation on how > to > > filter odd/even IP addresses, I'll post a similar but different question: > > > > Make a (single line) access-list that will only allow traffic from > addresses > > matching the following model: > > > > x.x.x.1 > > x.x.x.9 > > x.x.x.17 > > x.x.x.25 > > > > It's along the same lines as the question you posed, but a little more > > challenging since you only want those 4 addresses to pass through. > =) > > > > If you want the answer without me posting it to the whole group (to keep > > things fun), feel free to e-mail me and I'll reply via e-mail with the > > answer. > > > > Mike W. > > > > > > "Raymond Everson (Rainman)" <[EMAIL PROTECTED]> wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > *Still* haven't figured this one out: > > > > > > Create an IP ACL, in as few lines as possible of course, which permits > > > only even-numbered IP addresses. > > > > > > Ideas? > > > > > > Rainman > > > > > > ___ > > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > --- > > > > > > ___ > > UPDATED Posting Guidelines: http://www.groupstudy.com/lis
RE: Wild Card Mask Puzzle - fun in the sun
With wild card masks the 0 bits correspond to an exact match with the corresponding bits in the listed ip address. This is in a way the exact opposite of a subnet mask in which the ones need to be matched and not the zeros. Atif -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 04, 2000 10:25 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: Wild Card Mask Puzzle - fun in the sun well if it's the wrong answer than how does it differ...thanks for letting me know though Mark Zabludovsky ~ CCNA [EMAIL PROTECTED] "My peers always told me that growing up would have a huge impact on my life... What they didn't tell me is that the size of the impact would knock me on my ass"... ~ Mark Z.~ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wild Card Mask Puzzle - fun in the sun
well if it's the wrong answer than how does it differ...thanks for letting me know though Mark Zabludovsky ~ CCNA [EMAIL PROTECTED] "My peers always told me that growing up would have a huge impact on my life... What they didn't tell me is that the size of the impact would knock me on my ass"... ~ Mark Z.~ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wild Card Mask Puzzle - fun in the sun
So close. but yet so far Hehe Atif is right, however. The mask in question isn't a subnet mask, but a wildcard mask. Use that to find out the real answer.. Chuck, dig up another good question like this to keep eveyone on their toes... That's why this newsgroup is here.. So we can all push, quiz, and support each other while we all learn. Lemme know when y'all want the solution. I have a nice explanation of this all ready to go (from responding to all of the e-mail responses I've been getting). =) Mike W. <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hey Group, > To take a shot at this question: John, I think the answer is > different... I'm not exactly sure how this is done, but by your model I'm > imagining that you have the subnet mask as 0.0.0.24 so that you can get all > of the required numbers to be excepted. Actually I think the subnet mask > should be 0.0.0.25. > Because it lays out like this: (yours): 0.0.0.00011000, if you do it like > this than the addresses bit places would not match up with the net mask. > (with mine): > 0.0.0.00011001, all of the addresses specified (.1, .9, .17, and .25) all > will match up with the mask and be allowed through...I think ;) Don't get me > wrong, you may be right and I could just be rambling without a cause here ;) > After all, I'm just a rookie ;) Let me know if I'm wrong and I'm gonna stay > tuned to find out the answer. I've probably got something wrong with the IP > address part...oh well, I'm waiting ;) > > Mark Zabludovsky ~ CCNA > [EMAIL PROTECTED] > > "My peers always told me that growing up would have a huge impact on my > life... What they didn't tell me is that the size of the impact would knock > me on my ass"... > ~ Mark Z.~ > > In a message dated 7/4/00 12:18:59 AM Eastern Daylight Time, [EMAIL PROTECTED] > writes: > > << Ok, I'll bite. My official guess is: > > access-list xx permit ip x.x.x.1 0.0.0.24 > > If I'm correct, I'll post how I did it later...right now I'm still > wondering... :-) > > Chuck, you're mean...just plain mean! > > Good luck all! > > John Neiberger > > > > > > > Come on, everyone. Where are you folks on this one? All you CCNA > candidates. > > Show us your stuff. All you ACRC students - give it a try. I can't > believe > > we haven't had a go round about this one. > > > > For the record, I have already filed my answer privately. It is a fun > > puzzle, and one that will demonstrate your thinking skills. > > > > Who knows the answer? How do you know you're right > > > > Chuck > > > > > > Puzzle posed by Mike Williams: > > > > Make a (single line) access-list that will only allow traffic from > addresses > > matching the following model: > > > > x.x.x.1 > > x.x.x.9 > > x.x.x.17 > > x.x.x.25 > > > > It's along the same lines as the question you posed, but a little more > > challenging since you only want those 4 addresses to pass through. > =) > > > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Wild Card Mask Puzzle - fun in the sun
Thats not a subnet mask. It is actually a wild card mask. Saying anything more will just be giving away the solution prior to everyone getting a chance. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, July 04, 2000 9:49 AM To: [EMAIL PROTECTED] Subject: Re: Wild Card Mask Puzzle - fun in the sun Hey Group, To take a shot at this question: John, I think the answer is different... I'm not exactly sure how this is done, but by your model I'm imagining that you have the subnet mask as 0.0.0.24 so that you can get all of the required numbers to be excepted. Actually I think the subnet mask should be 0.0.0.25. Because it lays out like this: (yours): 0.0.0.00011000, if you do it like this than the addresses bit places would not match up with the net mask. (with mine): 0.0.0.00011001, all of the addresses specified (.1, .9, .17, and .25) all will match up with the mask and be allowed through...I think ;) Don't get me wrong, you may be right and I could just be rambling without a cause here ;) After all, I'm just a rookie ;) Let me know if I'm wrong and I'm gonna stay tuned to find out the answer. I've probably got something wrong with the IP address part...oh well, I'm waiting ;) Mark Zabludovsky ~ CCNA [EMAIL PROTECTED] "My peers always told me that growing up would have a huge impact on my life... What they didn't tell me is that the size of the impact would knock me on my ass"... ~ Mark Z.~ In a message dated 7/4/00 12:18:59 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: << Ok, I'll bite. My official guess is: access-list xx permit ip x.x.x.1 0.0.0.24 If I'm correct, I'll post how I did it later...right now I'm still wondering... :-) Chuck, you're mean...just plain mean! Good luck all! John Neiberger > > > Come on, everyone. Where are you folks on this one? All you CCNA candidates. > Show us your stuff. All you ACRC students - give it a try. I can't believe > we haven't had a go round about this one. > > For the record, I have already filed my answer privately. It is a fun > puzzle, and one that will demonstrate your thinking skills. > > Who knows the answer? How do you know you're right > > Chuck > > > Puzzle posed by Mike Williams: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wild Card Mask Puzzle - fun in the sun
Hey Group, To take a shot at this question: John, I think the answer is different... I'm not exactly sure how this is done, but by your model I'm imagining that you have the subnet mask as 0.0.0.24 so that you can get all of the required numbers to be excepted. Actually I think the subnet mask should be 0.0.0.25. Because it lays out like this: (yours): 0.0.0.00011000, if you do it like this than the addresses bit places would not match up with the net mask. (with mine): 0.0.0.00011001, all of the addresses specified (.1, .9, .17, and .25) all will match up with the mask and be allowed through...I think ;) Don't get me wrong, you may be right and I could just be rambling without a cause here ;) After all, I'm just a rookie ;) Let me know if I'm wrong and I'm gonna stay tuned to find out the answer. I've probably got something wrong with the IP address part...oh well, I'm waiting ;) Mark Zabludovsky ~ CCNA [EMAIL PROTECTED] "My peers always told me that growing up would have a huge impact on my life... What they didn't tell me is that the size of the impact would knock me on my ass"... ~ Mark Z.~ In a message dated 7/4/00 12:18:59 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: << Ok, I'll bite. My official guess is: access-list xx permit ip x.x.x.1 0.0.0.24 If I'm correct, I'll post how I did it later...right now I'm still wondering... :-) Chuck, you're mean...just plain mean! Good luck all! John Neiberger > > > Come on, everyone. Where are you folks on this one? All you CCNA candidates. > Show us your stuff. All you ACRC students - give it a try. I can't believe > we haven't had a go round about this one. > > For the record, I have already filed my answer privately. It is a fun > puzzle, and one that will demonstrate your thinking skills. > > Who knows the answer? How do you know you're right > > Chuck > > > Puzzle posed by Mike Williams: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Wild Card Mask Puzzle - fun in the sun
Thats mine too and i am sure this is correct. I dont mind explaining how you can arrive at it but only if you guys want me to, i mean i do not want to disclose the solution before every one has had a go :) And no need to worry abt the access-list syntax john. you got the masking correct and thats what the quiz is all abt Regards Atif P.S: hey no need to go hard on chuck ... he was just inviting us to play in with him :) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of John Neiberger Sent: Tuesday, July 04, 2000 8:59 AM To: [EMAIL PROTECTED] Subject: Re: Wild Card Mask Puzzle - fun in the sun Ok, I'll bite. My official guess is: access-list xx permit ip x.x.x.1 0.0.0.24 If I'm correct, I'll post how I did it later...right now I'm still wondering... :-) Chuck, you're mean...just plain mean! Good luck all! John Neiberger > > > Come on, everyone. Where are you folks on this one? All you CCNA candidates. > Show us your stuff. All you ACRC students - give it a try. I can't believe > we haven't had a go round about this one. > > For the record, I have already filed my answer privately. It is a fun > puzzle, and one that will demonstrate your thinking skills. > > Who knows the answer? How do you know you're right > > Chuck > > > Puzzle posed by Mike Williams: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > > > > -Original Message- > From:[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > Michael L. Williams > Sent:Wednesday, June 28, 2000 7:27 PM > To: [EMAIL PROTECTED] > Subject: Re: ACL Question > > My newsgroup reader "claims" to have posted my response to this when it was > first asked. And for the record, I did have the correct answer and > explanation too =P. So instead of posting yet another explanation on how to > filter odd/even IP addresses, I'll post a similar but different question: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > > If you want the answer without me posting it to the whole group (to keep > things fun), feel free to e-mail me and I'll reply via e-mail with the > answer. > > Mike W. > > > "Raymond Everson (Rainman)" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > *Still* haven't figured this one out: > > > > Create an IP ACL, in as few lines as possible of course, which permits > > only even-numbered IP addresses. > > > > Ideas? > > > > Rainman > > > > ___ > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > --- > > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Wild Card Mask Puzzle - fun in the sun
I'm not human tonight. A paraphrase from Marlowe's soliloquy in The Little Sister, by Raymond Chandler. This, by the way, is why it takes me so damn long to master these Cisco things. I keep getting distracted by my liberal arts educational background. Chuck PS and I am not commenting on right or wrong because 1) let's see some more response and 2) it's not my puzzle anyway. Mike otta get the credit and have the fun of judging. :-> -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of John Neiberger Sent: Monday, July 03, 2000 8:59 PM To: [EMAIL PROTECTED] Subject: Re: Wild Card Mask Puzzle - fun in the sun Ok, I'll bite. My official guess is: access-list xx permit ip x.x.x.1 0.0.0.24 If I'm correct, I'll post how I did it later...right now I'm still wondering... :-) Chuck, you're mean...just plain mean! Good luck all! John Neiberger > > > Come on, everyone. Where are you folks on this one? All you CCNA candidates. > Show us your stuff. All you ACRC students - give it a try. I can't believe > we haven't had a go round about this one. > > For the record, I have already filed my answer privately. It is a fun > puzzle, and one that will demonstrate your thinking skills. > > Who knows the answer? How do you know you're right > > Chuck > > > Puzzle posed by Mike Williams: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > > > > -Original Message- > From:[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > Michael L. Williams > Sent:Wednesday, June 28, 2000 7:27 PM > To: [EMAIL PROTECTED] > Subject: Re: ACL Question > > My newsgroup reader "claims" to have posted my response to this when it was > first asked. And for the record, I did have the correct answer and > explanation too =P. So instead of posting yet another explanation on how to > filter odd/even IP addresses, I'll post a similar but different question: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > > If you want the answer without me posting it to the whole group (to keep > things fun), feel free to e-mail me and I'll reply via e-mail with the > answer. > > Mike W. > > > "Raymond Everson (Rainman)" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > *Still* haven't figured this one out: > > > > Create an IP ACL, in as few lines as possible of course, which permits > > only even-numbered IP addresses. > > > > Ideas? > > > > Rainman > > > > ___ > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > --- > > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wild Card Mask Puzzle - fun in the sun
Ok, I just caught it, so no one needs to correct my syntax. :-) If this is a standard access list, it should not have "ip" in it. If it is an extended access list, then I should have added a destination address. But who cares about that, is the rest right?? > Ok, I'll bite. My official guess is: > > access-list xx permit ip x.x.x.1 0.0.0.24 > > If I'm correct, I'll post how I did it later...right now I'm still > wondering... :-) > > Chuck, you're mean...just plain mean! > > Good luck all! > > John Neiberger > > > > > > > Come on, everyone. Where are you folks on this one? All you CCNA > candidates. > > Show us your stuff. All you ACRC students - give it a try. I can't > believe > > we haven't had a go round about this one. > > > > For the record, I have already filed my answer privately. It is a fun > > puzzle, and one that will demonstrate your thinking skills. > > > > Who knows the answer? How do you know you're right > > > > Chuck > > > > > > Puzzle posed by Mike Williams: > > > > Make a (single line) access-list that will only allow traffic from > addresses > > matching the following model: > > > > x.x.x.1 > > x.x.x.9 > > x.x.x.17 > > x.x.x.25 > > > > It's along the same lines as the question you posed, but a little more > > challenging since you only want those 4 addresses to pass through. > =) > > > > > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > > Michael L. Williams > > Sent: Wednesday, June 28, 2000 7:27 PM > > To: [EMAIL PROTECTED] > > Subject: Re: ACL Question > > > > My newsgroup reader "claims" to have posted my response to this when it > was > > first asked. And for the record, I did have the correct answer and > > explanation too =P. So instead of posting yet another explanation on how > to > > filter odd/even IP addresses, I'll post a similar but different question: > > > > Make a (single line) access-list that will only allow traffic from > addresses > > matching the following model: > > > > x.x.x.1 > > x.x.x.9 > > x.x.x.17 > > x.x.x.25 > > > > It's along the same lines as the question you posed, but a little more > > challenging since you only want those 4 addresses to pass through. > =) > > > > If you want the answer without me posting it to the whole group (to keep > > things fun), feel free to e-mail me and I'll reply via e-mail with the > > answer. > > > > Mike W. > > > > > > "Raymond Everson (Rainman)" <[EMAIL PROTECTED]> wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > *Still* haven't figured this one out: > > > > > > Create an IP ACL, in as few lines as possible of course, which permits > > > only even-numbered IP addresses. > > > > > > Ideas? > > > > > > Rainman > > > > > > ___ > > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > --- > > > > > > ___ > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > ___ > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > > > ___ > Say Bye to Slow Internet! > http://www.home.com/xinbox/signup.html > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Wild Card Mask Puzzle - fun in the sun
Ok, I'll bite. My official guess is: access-list xx permit ip x.x.x.1 0.0.0.24 If I'm correct, I'll post how I did it later...right now I'm still wondering... :-) Chuck, you're mean...just plain mean! Good luck all! John Neiberger > > > Come on, everyone. Where are you folks on this one? All you CCNA candidates. > Show us your stuff. All you ACRC students - give it a try. I can't believe > we haven't had a go round about this one. > > For the record, I have already filed my answer privately. It is a fun > puzzle, and one that will demonstrate your thinking skills. > > Who knows the answer? How do you know you're right > > Chuck > > > Puzzle posed by Mike Williams: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > > > > -Original Message- > From:[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > Michael L. Williams > Sent:Wednesday, June 28, 2000 7:27 PM > To: [EMAIL PROTECTED] > Subject: Re: ACL Question > > My newsgroup reader "claims" to have posted my response to this when it was > first asked. And for the record, I did have the correct answer and > explanation too =P. So instead of posting yet another explanation on how to > filter odd/even IP addresses, I'll post a similar but different question: > > Make a (single line) access-list that will only allow traffic from addresses > matching the following model: > > x.x.x.1 > x.x.x.9 > x.x.x.17 > x.x.x.25 > > It's along the same lines as the question you posed, but a little more > challenging since you only want those 4 addresses to pass through. =) > > If you want the answer without me posting it to the whole group (to keep > things fun), feel free to e-mail me and I'll reply via e-mail with the > answer. > > Mike W. > > > "Raymond Everson (Rainman)" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > *Still* haven't figured this one out: > > > > Create an IP ACL, in as few lines as possible of course, which permits > > only even-numbered IP addresses. > > > > Ideas? > > > > Rainman > > > > ___ > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > > FAQ, list archives, and subscription info: http://www.groupstudy.com > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > --- > > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
