RE: BruteForcing?

["Hagen, Eric" <hagene () DenverNewspaperAgency com>]

Anyone feel free to correct me if I'm wrong, but I don't believe a dictionary attack against modern IOS is practical 
because of the disconnect/timeout security features of the routers/switches.  Try defaults, maybe a few dozen 'obvious' 
passwords "root" "enable" "admin" etc and move on to other vulnerabilities.

Eric

-----Original Message-----
From: listbounce () securityfocus com
[mailto:listbounce () securityfocus com]On Behalf Of 09sparky () gmail com
Sent: Sunday, October 15, 2006 12:03 PM
To: pen-test () securityfocus com
Subject: BruteForcing?


This is more of a general brute forcing question, but one which I could use some assistance.

I am attempting to brute force some telnet sessions (Cisco Routers - CISCO IOS 12.2 and IOS 12.3(8), Cisco 1721 
router).  When telnet'ing in, it only prompts me for a PW (Not a username).  It has a 3 attempts disconnect, so I get 
disconnected and have to reconnect.  

My question is:
How and what tool should I use to try and brute force (dictionary attack) this session?
I have tried Hydra, but when I get disconnected (after 3 attempts), it tells me it is "finished".  Not sure if there is 
a way to make it reconnect.  Is there a better tool or other techniques that would work better?

Second question: Brute forcing also, but against WebPages.  For example, a Cisco 3000 VPN Concentrator, I have the 
webpage asking for username/password.  How would I attempt to dictionary attack this?

Thanks,
Sparky

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