automating username/password when ssh to cisco router

automating username/password when ssh to cisco router
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Subject Author Date
automating username/password when ssh to cisco router BertieBigBollox@gmail.com 04-16-2008
Posted by BertieBigBollox@gmail.com on April 16, 2008, 8:12 am
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Trying to ssh from a Sun Solaris box to a Cisco router and want to use
a script to log in automatically without it prompting for a username
and password.

Looks like you can use ssh -l <username> to specify a username but
there doesnt appear to be a way to send the password, so it still
prompts for this.

I understand that if I was ssh to another unix box I could probably
use the 'expects' command and do it this way but I guess its no good
for a cisco router.

At the moment, I've got a file, called commands.txt which contains the
cisco commands. Then my Solaris script runs a command as follows:-

ssh -l user < commands.txt

So basically, once logged in the cisco commands are run automatically.
However, the password is the problem.

Anyone know of any way around this?

NMFall 20%
Posted by Gary Mills on April 16, 2008, 8:17 am
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>Trying to ssh from a Sun Solaris box to a Cisco router and want to use
>a script to log in automatically without it prompting for a username
>and password.

I use `kermit' for this purpose. All of the scripting, including the
ssh password, can be done within a kermit script.


--
-Gary Mills- -Unix Support- -U of M Academic Computing and Networking-

Posted by BertieBigBollox@gmail.com on April 17, 2008, 5:10 am
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>
> >Trying to ssh from a Sun Solaris box to a Cisco router and want to use
> >a script to log in automatically without it prompting for a username
> >and password.
>
> I use `kermit' for this purpose. =A0All of the scripting, including the
> ssh password, can be done within a kermit script.
>
> --
> -Gary Mills- =A0 =A0-Unix Support- =A0 =A0-U of M Academic Computing and N=
etworking-

Please correct me I'm wrong but with kermit dont you need a client end
and a server?

Client end (Solaris) would be OK but not sure how'd I'd run a kermit
server on the Cisco router? Of course, if you are able to do this, I'd
be grateful if you dont mind sharing....

Posted by Doug McIntyre on April 16, 2008, 9:21 am
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>Trying to ssh from a Sun Solaris box to a Cisco router and want to use
>a script to log in automatically without it prompting for a username
>and password.

>Looks like you can use ssh -l <username> to specify a username but
>there doesnt appear to be a way to send the password, so it still
>prompts for this.

>I understand that if I was ssh to another unix box I could probably
>use the 'expects' command and do it this way but I guess its no good
>for a cisco router.

(expect, not expects)
Why not? Same exact thing.

Anyway, the tool has already been invented. The easiest thing to do
would probably go get the RANCID package and use the clogin script within.

Otherwise, the cosi-nms.sf.net area has many tools as well for remote access.


Posted by BertieBigBollox@gmail.com on April 17, 2008, 4:51 am
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> >Trying to ssh from a Sun Solaris box to a Cisco router and want to use
> >a script to log in automatically without it prompting for a username
> >and password.
> >Looks like you can use ssh -l <username> to specify a username but
> >there doesnt appear to be a way to send the password, so it still
> >prompts for this.
> >I understand that if I was ssh to another unix box I could probably
> >use the 'expects' command and do it this way but I guess its no good
> >for a cisco router.
>
> (expect, not expects)
> Why not? Same exact thing.
>

OK. I just thought that since I was running ssh, control wouldnt
return to the script running this (and thus go on to the next line
with the expect statement on until the ssh command was all done and
complete?

Dont you need to use 'spawn' or something if doing it this way? Is
this right?

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