I'll bite. Not being responsible for our network I asked a peer who is more familiar with it and yes we do allow DNS requests. DNS servers are generally located in a DMZ are are not a high security risk. If you have no DNS server then you only need to allow replies since you obviously have nothing to request..
Dave Chuck wrote: > > hey Mad Guy, does your organization permit DNS requests from any old place, > or do you restrict that to sources only within your space? > > Chuck > trying to drag you into another thread entirely > > ""MADMAN"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Not in my world: > > > > interface Ethernet4/0/0 > > bandwidth 1000 > > ip address 172.28.64.11 255.255.255.192 > > ip access-group 150 in > > no ip directed-broadcast > > no ip mroute-cache > > ! > > access-list 150 deny tcp host 172.28.56.48 any eq telnet log > > access-list 150 permit ip any any > > > > *Feb 18 12:11:42: %SEC-6-IPACCESSLOGP: list 150 denied tcp > > 172.28.56.48(57010) - > > > 172.28.64.11(23), 1 packet > > > > Thank you!! > > > > Dave > > > > "Roberts, Larry" wrote: > > > > > > The only way that the access-list applied to the inbound interface ( > > non-vty > > > ) blocked your telnet is if you were trying to telnet > > > To an address that was not the directly connected address ( loopback or > far > > > side serial/ethernet ) > > > > > > If you were to telnet directly to the interface that the access-list was > > > applied to you WOULD get in. Only an access-class applied > > > To the VTY ports will stop that. > > > > > > Thanks > > > > > > Larry > > > > > > -----Original Message----- > > > From: MADMAN [mailto:[EMAIL PROTECTED]] > > > Sent: Monday, February 18, 2002 1:05 PM > > > To: [EMAIL PROTECTED] > > > Subject: Re: Dening telnet access [7:35628] > > > > > > I know it does. I have, even fairly recently, locked myself out of a > > router > > > via an inbound access list applied to an interface,DOH:( Try again and > if > > > it doesn't work I would like to see the config. > > > > > > Are you sure the interface on which you applied the access list is the > > > interface you were telneting to/thru?? > > > > > > Dave > > > > > > Patrick Ramsey wrote: > > > > > > > > really? I have had no luck using inbound acl's to control telnet to > > > > the > > > router...I always have to use acc's on the vty's > > > > > > > > Is there a trick to this? > > > > > > > > -Patrick > > > > > > > > >>> MADMAN 02/18/02 12:16PM >>> > > > > Actually telnet packets are processed by inbound access-list. Now if > > > > your refering to outbound access-lists then you would be correct. > > > > > > > > Dave > > > > > > > > "Hire, Ejay" wrote: > > > > > > > > > > Because telnet packets destined for the router are not normally > > > > > processed > > > > by > > > > > access-lists. (i don't understand why not, but hey...) > > > > > > > > > > instead do this > > > > > > > > > > access-list y deny xx.xx.xx.xx xx.xx.xx.xx > > > > > > > > > > line vty 0 n (n = the results of a ?, usually 4) access-class y > > > > > > > > > > -----Original Message----- > > > > > From: McHugh Randy [mailto:[EMAIL PROTECTED]] > > > > > Sent: Saturday, February 16, 2002 4:49 PM > > > > > To: [EMAIL PROTECTED] > > > > > Subject: Dening telnet access [7:35628] > > > > > > > > > > Access list problem: > > > > > > > > > > Why does this extended access list not work to deny telnet access > > > > > applied > > > > to > > > > > the internet interface on a 2514? > > > > > > > > > > Extended IP access list 199 > > > > > deny tcp any any eq telnet > > > > > > > > > > interface Ethernet0 > > > > > > > > > > ip access-group 199 in > > > > > > > > > > I have alot more statments than this and of course the statement > > > > > access-list 199 permit ip any any > > > > > > > > > > to take care of the implicit deny all , but I can still access the > > > > > router from the internet through telnet. Anyone have any ideas what > > > > > else might be needed to prevent of selectivly allow telnet access to > > > > > my router. Thanks, > > > > > Randy > > > > -- > > > > David Madland > > > > Sr. Network Engineer > > > > CCIE# 2016 > > > > Qwest Communications Int. Inc. > > > > [EMAIL PROTECTED] > > > > 612-664-3367 > > > > > > > > "Emotion should reflect reason not guide it" > > > > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files > > > transmitted with it may contain confidential and /or proprietary > > information > > > in the possession of WellStar Health System, Inc. ("WellStar") and is > > > intended only for the individual or entity to whom addressed. This > email > > > may contain information that is held to be privileged, confidential and > > > exempt from disclosure under applicable law. If the reader of this > message > > > is not the intended recipient, you are hereby notified that any > > unauthorized > > > access, dissemination, distribution or copying of any information from > this > > > email is strictly prohibited, and may subject you to criminal and/or > civil > > > liability. If you have received this email in error, please notify the > > > sender by reply email and then delete this email and its attachments > from > > > your computer. Thank you. > > > > > > > > ================================================================ > > > > > > -- > > > David Madland > > > Sr. Network Engineer > > > CCIE# 2016 > > > Qwest Communications Int. Inc. > > > [EMAIL PROTECTED] > > > 612-664-3367 > > > > > > "Emotion should reflect reason not guide it" > > -- > > David Madland > > Sr. Network Engineer > > CCIE# 2016 > > Qwest Communications Int. Inc. > > [EMAIL PROTECTED] > > 612-664-3367 > > > > "Emotion should reflect reason not guide it" -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=35785&t=35628 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
