Penetration Testing mailing list archives
Re: publications concerning port forwarding
From: "Ben Nell" <enemy.cow () gmail com>
Date: Tue, 10 Apr 2007 23:40:50 -0500
Could you please explain your reasoning behind the inherent flaws in port forwarding? It seems to me that port forwarding is both common and effective in limiting access to internal NATed hosts. Obviously security practices would warrant port forwarding only to DMZ subnets. How else do you design your firewall rules to allow traffic into your network (unless of course you're using a proxy-based firewall) when using NAT? Maybe I'm misinterpreting your statement. Thanks, BN On 4/10/07, Jason L. Ellison <infotek () datasync com> wrote:
List, I'm currently doing work for a large company as a consultant. Another consultant is installing a MS Exchange server and is now requesting for me to forward ports on the PIX from the Internet to internal servers. I have explained that port forwarding is very risky but they don't seem to understand. Are there any publications that can be used to show the link between port forwarding and bad security posture. I've scoured and found nothing (maybe its to obvious to document?)... -Jason Ellison ------------------------------------------------------------------------ This List Sponsored by: Cenzic Need to secure your web apps? Cenzic Hailstorm finds vulnerabilities fast. Click the link to buy it, try it or download Hailstorm for FREE. http://www.cenzic.com/products_services/download_hailstorm.php?camp=701600000008bOW ------------------------------------------------------------------------
------------------------------------------------------------------------ This List Sponsored by: Cenzic Need to secure your web apps? Cenzic Hailstorm finds vulnerabilities fast. Click the link to buy it, try it or download Hailstorm for FREE. http://www.cenzic.com/products_services/download_hailstorm.php?camp=701600000008bOW ------------------------------------------------------------------------
Current thread:
- publications concerning port forwarding Jason L. Ellison (Apr 10)
- Re: publications concerning port forwarding Ben Nell (Apr 10)
- Re: publications concerning port forwarding vtlists (Apr 11)
- Re: publications concerning port forwarding Brendan Murray (Apr 10)
- RE: publications concerning port forwarding Wiedemann, Adrian (Apr 11)
- RE: publications concerning port forwarding Jason L. Ellison (Apr 11)
- RE: publications concerning port forwarding Wiedemann, Adrian (Apr 11)
- Message not available
- RE: publications concerning port forwarding Wiedemann, Adrian (Apr 11)
- RE: publications concerning port forwarding Jason L. Ellison (Apr 13)
- RE: publications concerning port forwarding Jason L. Ellison (Apr 11)
- Re: publications concerning port forwarding Ben Nell (Apr 10)
- <Possible follow-ups>
- RE: publications concerning port forwarding Jason Rahl (Apr 11)
- RE: publications concerning port forwarding Thomas W Shinder (Apr 13)