
Firewall Wizards mailing list archives
Re: RE: In defense of non standard ports
From: Chuck Swiger <chuck () codefab com>
Date: Tue, 24 Jan 2006 09:24:37 -0500
ArkanoiD wrote:
nuqneH, Allowing uncotrolled HTTP CONNECT to any port seems quite suicidal for any reasonable security policy, am i wrong?
Not at all. Makes a handy-dandy universal proxy which is being tunneled via SSL to hide the contents from easy inspection, and it's almost certain that the locals have decided that their proxy is allowed to do HTTPS through the firewall.
It's also quite possible that the locals have decided that the proxy should be allowed access to everything, assuming that only legitimate users would be on it. [1]
It was about seven or eight years ago that networks were getting pillaged en masse due to proxy-based end-runs around the local firewall, but that still happens today.
-- -Chuck[1]: Needless to say, this is *not* a safe or prudent assumption. You should not trust your proxy too much. Your proxy should not trust something claiming to be you too much, either: it should make you authenticate. Stuff you access from the proxy should also make you authenticate.
Your proxy should be on your DMZ subnet, it should not be on a network which is considered "trusted".
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Current thread:
- RE: In defense of non standard ports Behm, Jeffrey L. (Jan 23)
- RE: RE: In defense of non standard ports Bill Royds (Jan 23)
- Re: RE: In defense of non standard ports Tobias Reckhard (Jan 24)
- Re: RE: In defense of non standard ports James (Jan 24)
- Re: RE: In defense of non standard ports ArkanoiD (Jan 24)
- Re: RE: In defense of non standard ports Chuck Swiger (Jan 24)
- Re: RE: In defense of non standard ports Marcus J. Ranum (Jan 24)
- Re: RE: In defense of non standard ports Paul D. Robertson (Jan 24)
- Re: RE: In defense of non standard ports Tim Shea (Jan 24)
- Re: RE: In defense of non standard ports Paul D. Robertson (Jan 24)
- Message not available
- RE: In defense of non standard ports Brian Loe (Jan 24)
- Message not available
- Re: RE: In defense of non standard ports Marcus J. Ranum (Jan 24)
- Re: RE: In defense of non standard ports ArkanoiD (Jan 25)
- RE: RE: In defense of non standard ports Bill Royds (Jan 23)
- RE: RE: In defense of non standard ports Bill Royds (Jan 24)
- <Possible follow-ups>
- RE: RE: In defense of non standard ports Fetch, Brandon (Jan 23)
- RE: RE: In defense of non standard ports Behm, Jeffrey L. (Jan 24)