05-13-2009 02:22 AM
We have configured all the devices to be accessesd via SSH only, but today we can't SSH on any off our devices, all the devices andnetwork connections are fine.
Any idea why this could be.
05-13-2009 05:02 AM
can you http to them or is that not allowed? you would need to supply some debug info
05-13-2009 11:15 AM
Did you add a domain name and generated an rsa key after that?
Some hints:
- Your hostname should not be the default name "Router"
- First add a domain-name (needed to generate the key)
my-router(config)#ip domain name mydomain
- Then generate a crypto key. I used 1024 bits in this example
my-router(config)#crypto key generate rsa
The name for the keys will be: my-router.mydomain
Choose the size of the key modulus in the range of 360 to 2048 for your
General Purpose Keys. Choosing a key modulus greater than 512 may take
a few minutes.
How many bits in the modulus [512]: 1024
% Generating 1024 bit RSA keys, keys will be non-exportable...[OK]
#############: %SSH-5-ENABLED: SSH 1.99 has been enabled
my-router(config)#
05-13-2009 06:21 PM
Did someone push an access-class list to all of your vty ports?
Were you ever able to ssh to these devices?
Did someone change your AAA login method?
Did you use AAA radius or tacacs if so did something happen to it? My money is on this one.
05-14-2009 12:31 AM
There is no ACL configured on the devices and only local AAA is configured to authenticate local password for SSH.
05-14-2009 12:40 AM
as I said you need to provide debug info
05-14-2009 09:45 AM
Did you verify that the username and password are still on the device?
A "debug aaa authentication" and "debug ip ssh" would be really useful.
If you want answers provide those and I'm sure the group would be able to help you much easier.
06-03-2009 03:28 PM
have you added this statement under the vty lines ?
transport input ssh ?
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide