Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Firewalls
[Top] [All Lists]

RE: PPTP

Subject: RE: PPTP
Date: Fri, 23 Sep 2005 19:52:49 -0500
I created a similar problem after cleaning up a significant of neglected fluff 
from a Pix.  I had to allow ESP in as well as PPTP and GRE out to establish a 
PPTP connection through that Pix.  The iptables firewall might not be passing 
one or more of those protocols.  Try that.

Justin

-----Original Message-----
From: Matt Mckinley [mailto:mmckinley@secureworks.com]
Sent: Friday, September 23, 2005 2:18 PM
To: 'firewalls@securityfocus.com'
Subject: PPTP


I have a linux IPtables firewall (latest version) that is in bridging
mode.


There is another firewalling device behind it that is performing NAT.
When
a host behind that firewall connects to a PPTP server on a routable IP
address,
it appears that the IPTables linux box is breaking the connection.  When
we
remove that device, the connection works fine.

Does anyone have any thoughts on what might cause this behavior?

Thanks!!

-Matt

--
No virus found in this incoming message.
Checked by AVG Anti-Virus.
Version: 7.0.344 / Virus Database: 267.11.5/110 - Release Date: 9/22/2005


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.344 / Virus Database: 267.11.5/110 - Release Date: 9/22/2005
 

<Prev in Thread] Current Thread [Next in Thread>