SSH access to ASA

I can not access our ASA 5505 over SSH from outside. I set this through the ASDM to allow SSH (device management > access management > ASDM, HTTPS, Telnet, SSH). I have added a rule that allows the SSH on the external interface 0.0.0.0 0.0.0.0. When I try to ssh with putty, he says 'network connection closed unexpectedly server' when I look at the logs on the ASA, it shows a Built inbound TCP connection on port 22, but then immediately a disassembly TCP connection. It does not show that it is blocked by any rule. Is there something that I am missing about the SSH activation?

Thank you

Scott

Hello

In addition to the hosts permitted to SSH for the SAA, you must set the RSA keys for the secure connection.

In the CLI:

generate encryption rsa key

For these keys to work, you should have a name of host/domain configured on the SAA so name (unless you configure a dedicated RSA keys).

So basically, configure a host name, domain name and generate the RSA key pair:

hostname NAME_OF_ASA

NAME_OF_DOMAIN domain name

generate encryption rsa key

Accept the default of 1024 and it should work.

Federico.

Tags: Cisco Security

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