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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: ABOVE.NET SECURITY TRUTHS?
At 15:06 28/04/00 -0600, Alec H. Peterson wrote: > >Paul Froutan wrote: >> >> I don't think you can. However, I use TACACS on all my switches and >> routers. From what I know, TACACS passwords are encrypted using the key on >> your network devices and the TACACS server. So, that, in combination with >> a private management LAN not accessible by your customers should lock down >> your network pretty effectively. Any comments? > >Using TACACS+ with some sort of one-time-passwording works very well. TACACS encryption won't help if you follow the Cisco Essential IOS Features (v 2.82 - Feb 18, 2000). On page 45 they discuss router command auditing and recommend: aaa accounting command 15 start-stop tacacs+ Unfortunately, this will log in your syslog the password commands in cleartext. You would have to be sure that the Unix/NT system you are logging all Cisco commands to is as secure as your router. How many of you run ISS/Cybercop/Netrecon scans every week on your logging servers to be sure they are secure? "aaa accounting command 15 start-stop tacacs+" can be considered an unintentional backdoor for many. I informed the Cisco authors when it was published to issue a document patch. -Hank > >Alec > >-- >Alec H. Peterson - [email protected] >Staff Scientist >CenterGate Research Group - http://www.centergate.com >"Technology so advanced, even _we_ don't understand it!" > >
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