Re: My firewall

2005-01-19 Thread J. Rivero
Hi Peter, I am a newbie as well, but after some time banging my head against walls I came up with my own 'silly' pf.conf rules. I have included my rules at the end of this email. I Removed the extra rules (I think all of them) and all you have to do is change the variable names to whatever you

Re: my firewall

2005-01-19 Thread Jason Opperisano
On Wed, Jan 19, 2005 at 02:07:10PM -0700, R T wrote: Hello folks. Thanks to everyone who responded to my problem. The laptop can use the internet now, however it wont resolve host names properly. For example, it wouldnt connect to www.google.ca but it would to 64.233.167.104 Same for IRC,

my firewall OR gee im stupid...

2005-01-19 Thread R T
Yeah, dns wasnt set on the laptop, not too bright today. Its working fine now. Now to learn about making it an actual firewall :) Thanks guys for the help! R.T.

Re: my firewall

2005-01-19 Thread pf-r
R T wrote: Hello folks. Thanks to everyone who responded to my problem. The laptop can use the internet now, however it wont resolve host names properly. For example, it wouldnt connect to www.google.ca but it would to 64.233.167.104 Same for IRC, xhat wouldnt connect to eu.undernet.org but it

Re: my firewall

2005-01-19 Thread pf-r
OOPS- pf-r wrote: where I've compliled a (now aging) list of s/compliled/compiled BTW, if anyone wants to submit pf.conf examples with accompanying 'pfctl -sr' (or alternative) outputs for posting on the pf-r, visit #pf and speak up. -S

Re: my firewall OR gee im stupid...

2005-01-19 Thread Rick Barter
R T wrote: Yeah, dns wasnt set on the laptop, not too bright today. Its working fine now. Now to learn about making it an actual firewall :) Thanks guys for the help! R.T. No problem, RT. Good luck. rvb

Re: How do I change my firewall ports to stealth mode?

2004-10-01 Thread Greg Wooledge
Rod.. Whitworth ([EMAIL PROTECTED]) wrote: On Tue, 28 Sep 2004 22:03:55 -0400, Greg Wooledge wrote: Personally, I prefer not to reveal the usernames behind the client connections I'm making, so I use nullidentd. What's better about that than making the flags -Hole on the inetd settings for

Re: How do I change my firewall ports to stealth mode?

2004-09-29 Thread Lars Hansson
Lars Hansson wrote: OpenBSD does this by default in inetd.conf. Correction, it doesnt. --- Lars Hansson

Re: How do I change my firewall ports to stealth mode?

2004-09-29 Thread Lars Hansson
Greg Wooledge wrote: Personally, I prefer not to reveal the usernames behind the client connections I'm making, so I use nullidentd. It's very simplistic; it just returns a constant string for all ident requests. (It doesn't appear to be in ports; I simply grabbed the source code from

Re: How do I change my firewall ports to stealth mode?

2004-09-29 Thread Rod.. Whitworth
On Tue, 28 Sep 2004 22:03:55 -0400, Greg Wooledge wrote: Personally, I prefer not to reveal the usernames behind the client connections I'm making, so I use nullidentd. It's very simplistic; it just returns a constant string for all ident requests. (It doesn't appear to be in ports; I simply

Re: How do I change my firewall ports to stealth mode?

2004-09-29 Thread Lars Hansson
[EMAIL PROTECTED] wrote: http://www.clock.org/~fair/opinion/identd.html Thanks for giving a link that nicely illustrates my point about people not understanding what ident does: The upshot of these assumptions is that when your system contacts the identd server of a remote system, you can trust

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Jason Dixon
On Sep 28, 2004, at 2:13 AM, Siju George wrote: I changed the block-policy from return to drop. Now my ports except 113 are showing up as stealthed while twsting from http://www.grc.com/x/ne.dll?rh1dkyd2 The Port 113 was opened because the PF FAQ asked to open it for SMTP Auth/Ident (TCP port

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Siju George
Hi Jason! Thanks for the reply! But if I can get port 113 also in adaptive stealth mode like Zonealarm did then it would be better isn't it? regards Siju

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Daniel Hartmeier
On Tue, Sep 28, 2004 at 04:46:40PM +0530, Siju George wrote: But if I can get port 113 also in adaptive stealth mode like Zonealarm did then it would be better isn't it? Not really. It can give a false sense of security, because you assume the 'adaptive' part can't be tricked by the attacker.

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Oliver Humpage
on 28/9/04 12:16 pm, Siju George at [EMAIL PROTECTED] wrote: Hi Jason! Thanks for the reply! But if I can get port 113 also in adaptive stealth mode like Zonealarm did then it would be better isn't it? If you're just trying to hide, then no. Personally I send RSTs on blocked ports,

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Volker Kindermann
Hi Siju, The Port 113 was opened because the PF FAQ asked to open it for SMTP Auth/Ident (TCP port 113): used by some services such as SMTP and IRC. ICMP Echo Requests: the ICMP packet type used by ping(8). I know that this is in the pf faq but I don't think that you really need it. I

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Lars Hansson
Siju George wrote: I was using Zone Alarm before on a Windows200 Firewall. All its ports were shown as Stealthed but still SMTP server access was possible! So further digging I got this explanation from the website that conducted the test. Adaptive Stealthing means that when a TCP SYN packet

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Siju George
Thankyou Oliver for the reply and Explanation! It was very informative. I'll also try the S/SAFR thing and see how it works! God bless you warm regards Siju

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Siju George
I know that this is in the pf faq but I don't think that you really need it. I don't know about IRC but you mentioned only SMTP on your side. I'm running emailservers for years now and never ran an identd. And my clients don't have an identd running either. I don't think that you need this

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Siju George
People who say identd is a source of severe information leakage does not understand what ident does. If you feel paranoid, as I do, you can always configure it to return random usernames. --- Lars Hansson Hi Lars! Thanks a lot for the reply! Will manpage for identd tell me how to return

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread interval
Siju George writes: Hi Lars! Thanks a lot for the reply! Will manpage for identd tell me how to return random usernames? Or coulld you please give me a link where I can learn that? http://www.clock.org/~fair/opinion/identd.html

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread interval
Kevin writes: Many IRC servers will drop sessions if they cannot talk to an ident service on the originating end. If you don't want your users to be on IRC; this could be considered as a benefit of blocking TCP/113 ;) Doubtful with IRC servers today. Although I'm not privy to the details of IRC

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Greg Hennessy
On 28 Sep 2004 10:50:02 -0700, [EMAIL PROTECTED] wrote: You don't need it, nothing now depends on it, Not quite correct. Certain smtp, ftp and irc servers come to mind. -- SB: Wait, you mean the costumes themselves give you super powers? MM: Of course! Why else would we fly around in

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Trevor Talbot
On Tuesday, Sep 28, 2004, at 09:47 US/Pacific, [EMAIL PROTECTED] wrote: Kevin writes: Many IRC servers will drop sessions if they cannot talk to an ident service on the originating end. If you don't want your users to be on IRC; this could be considered as a benefit of blocking TCP/113 ;)

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Daniel Hartmeier
On Tue, Sep 28, 2004 at 04:23:43PM -0700, Trevor Talbot wrote: It is. It's a mitigating mechanism for many types of worms/bots/whatever, since they aren't capable of poking holes in their computer owner's broadband NAT device. That's what UPnP is for, isn't it? SCNR, Daniel

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread eric-list-pf
On Tue, 2004-09-28 at 16:23:43 -0700, Trevor Talbot proclaimed... It is. It's a mitigating mechanism for many types of worms/bots/whatever, since they aren't capable of poking holes in their computer owner's broadband NAT device. Yea, sure. I've seen *many* bots with identd running happily

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Trevor Talbot
On Tuesday, Sep 28, 2004, at 16:34 US/Pacific, Daniel Hartmeier wrote: On Tue, Sep 28, 2004 at 04:23:43PM -0700, Trevor Talbot wrote: It is. It's a mitigating mechanism for many types of worms/bots/whatever, since they aren't capable of poking holes in their computer owner's broadband NAT

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Lars Hansson
Siju George wrote: Hi Lars! Thanks a lot for the reply! Will manpage for identd tell me how to return random usernames? Or coulld you please give me a link where I can learn that? man identd, options -h and -H in particular. OpenBSD does this by default in inetd.conf. --- Lars Hansson

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Greg Wooledge
Volker Kindermann ([EMAIL PROTECTED]) wrote: I'm running emailservers for years now and never ran an identd. And my clients don't have an identd running either. I don't think that you need this for smtp nowadays. It's never been mandatory for SMTP. Some IRC servers do require it, though.

RFC - my firewall ruleset

2003-03-05 Thread Chris Willis
I would like to know what I can do to improve my firewall ruleset. This exact set protects my own internal LAN (8 computers), and includes P2P rules. I have similar rulesets protecting other networks I have worked on, none with more than 300 clients though. # pF.conf working for Wall

adding a new subnet to my firewall

2003-01-13 Thread Dan Heaver
Hiyas, although no stritly a pf question I hope somone can answer this one for me We have just been given a second routable set of ip's for our servers as we hit capacity on our old one In order to use theese for NAT I obviously need to bind the addresses to our

Re: adding a new subnet to my firewall

2003-01-13 Thread Daniel Hartmeier
On Mon, Jan 13, 2003 at 03:11:36PM -, Dan Heaver wrote: In order to use theese for NAT I obviously need to bind the addresses to our firewall's external interface... They do however need a different gateway address, where do I speciy this ? is is something in my hostname.rl1 file ?

RE: adding a new subnet to my firewall

2003-01-13 Thread Dan Heaver
Eek, that should keep be busy for a while :-~ -Original Message- From: Daniel Hartmeier [mailto:[EMAIL PROTECTED]] Sent: 13 January 2003 16:10 To: Dan Heaver Cc: [EMAIL PROTECTED] Subject: Re: adding a new subnet to my firewall On Mon, Jan 13, 2003 at 03:11:36PM -, Dan Heaver wrote