Full Disclosure mailing list archives
Re: Re: Re: open telnet port
From: Valdis.Kletnieks () vt edu
Date: Thu, 09 Sep 2004 15:02:07 -0400
On Thu, 09 Sep 2004 16:37:28 -0000, ktabic said:
So the solution to not run a backup telnet server for updating SSH is to run a second, known insecure version of sshd on a different port, presuming of course, that you are allowed to run said sshd on said high port in the first place.
It's not perfect, but it's a hell of a lot better than telnet. Security is never perfect, it's a set of trade-offs. You don't like the risk of starting another one, you're of course free to not do so, and find some other way to do it (do it with physical access to the console, ssh to a console server, whatever).
Which results in something that sounds a bit like security by obscurity, which is bad. You end up presuming that potential attacker cannot do his thing because you are using ssh on an oddball port.
No.. you're betting on creating a *much smaller* window of vulnerability. The fact that you're accepting remote connections *at all* means that we're making some security vs ease-of-use tradeoffs already.
Oh, and not everyone is root for all parts of the network they may be administrating.
I've never come across a case where somebody was sufficiently authorized to install a patch to the ssh software, but not sufficiently authorized to start/ restart the daemon. Possibly true for some military and other *very* high-security systems where they're *very* anal-retentive about separation of privileges, but I've not seen one....
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Current thread:
- Re: Re: Re: open telnet port, (continued)
- Re: Re: Re: open telnet port Kenneth Ng (Sep 09)
- Re: Re: Re: open telnet port Dave Ewart (Sep 09)
- Re: Re: Re: open telnet port Andrew Haninger (Sep 09)
- Re: Re: Re: open telnet port ktabic (Sep 09)
- Re: Re: Re: open telnet port Barrie Dempster (Sep 09)
- Re: Re: Re: open telnet port Andrew Haninger (Sep 09)
- Re: Re: Re: open telnet port Gary E. Miller (Sep 09)
- Re: Re: Re: open telnet port Andrew Haninger (Sep 09)
- Re: Re: Re: open telnet port ktabic (Sep 09)
- Re: Re: Re: open telnet port Andrew Haninger (Sep 09)
- Re: Re: Re: open telnet port Valdis . Kletnieks (Sep 09)
- Re: Re: Re: open telnet port Paul W. Roach III (Sep 09)
- Re: Re: Re: open telnet port Andrew Farmer (Sep 09)
- Re: Re: Re: open telnet port Kenneth Ng (Sep 09)
- Re: Re: Re: open telnet port Volker Tanger (Sep 09)
- Re: Re: Re: open telnet port Dave Ewart (Sep 09)
- Re: Re: Re: Re: open telnet port ktabic (Sep 10)
- Re: Re: Re: Re: open telnet port Andrew Farmer (Sep 10)
- Re: Re: Re: Re: open telnet port Gary E. Miller (Sep 10)
- Re: Re: Re: Re: open telnet port Andrew Farmer (Sep 10)
- Re: Re: Re: Re: open telnet port Gary E. Miller (Sep 11)