SSH to a cisco router and capture a show command

[netman4u]

Hello all,

I am writing a perl script a part of which is to SSH to a router, run a show command and capture the STDOUT of the command. Can I do this with a shell command?

I have tried:

my $password = 'password';
my $user = 'auser';
my $ip = '100.152.201.22';
my $results=`"(echo $password) | ssh $user@$ip"`;

However it still prompt me for a password when I run it and it does not even try to log me in as 'auser'.

Any help is appriciated.

Nick


If at first you don't succeed, don't try skydiving.

 

[feherke]

Hi

You can not pass the password that way to [tt]ssh[/tt]. Use a public key based authentication.

http://sial.org/howto/openssh/publickey-auth/

Feherke.

http://rootshell.be/~feherke/

 

[netman4u]

Thanks for the quick reply.

From your link:

The public portion of this key pair will reside on the servers being connected to

I am connecting to a router via SSH not a server. How can the router hold a key?

If at first you don't succeed, don't try skydiving.

 

[feherke]

Hi

How can the router hold a key?

Hmm... Good question. Sorry, I can not help with details.

Feherke.

http://rootshell.be/~feherke/

 

[Annihilannic]

You could use an expect script to enter the password.

I'm surprised that if the router supports SSH it has no facility for storing the keys...?

Annihilannic.

 

[mrn]

To generate the key on the router use.

cry key generate rsa
ip ssh time-out 60
ip ssh authentication-retries 2

At this point, the show cry key mypubkey rsa command will show the generated key.


Mike

"Whenever I dwell for any length of time on my own shortcomings, they gradually begin to seem mild, harmless, rather engaging little things, not at all like the staring defects in other people's characters."