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it_tips:ssh [2017/05/03 16:50]
florido [SSH key pair quick setup]
it_tips:ssh [2017/05/03 17:40] (current)
florido [SSH key pair quick setup]
Line 186: Line 186:
   - Try to login to the server **using the identity created**: Command:<​code:​bash>​ssh -i ~/​.ssh/​myid_rsa.pub pflorido@watto.matfys.lth.se</​code>​   - Try to login to the server **using the identity created**: Command:<​code:​bash>​ssh -i ~/​.ssh/​myid_rsa.pub pflorido@watto.matfys.lth.se</​code>​
  
-==== Debugging problems ====+You can now create entries in your ''​~/​.ssh/​config''​ file to use tunnelling as described in [[#Speedup connection using tunneling]],​ and the agent should automatically forward your keys.
  
 +===== Debugging SSH problems and useful commands =====
 +
 +The best to debug is to enable ssh verbose mode:
 +
 +<​code:​bash>​ssh -vv pflorido@watto.matfys.lth.se</​code>​
 +
 +==== See which keys are tried by the agent ====
 +
 +<​code:​bash>​ssh-add -l</​code>​
 +
 +==== Delete a key from the agent keyring ====
 +
 +<​code:​bash>​ssh-add -d ~/​.ssh/​myid_rsa</​code>​
 +
 +==== Check if the agent is running ====
 +
 +<​code:​bash>​ps aux | grep ssh-agent</​code>​
 +
 +==== Remove an offending key from known_hosts ====
 +
 +<​code:​bash>​ssh-keygen -R <​hostname></​code>​
 +
 +==== Remove an offending key from known_hosts ====
 +
 +<​code:​bash>​ssh-keygen -R <​hostname or IP></​code>​
 ====== References ====== ====== References ======
  
   * Arch linux SSH PKI tutorial, https://​wiki.archlinux.org/​index.php/​SSH_Keys ​   * Arch linux SSH PKI tutorial, https://​wiki.archlinux.org/​index.php/​SSH_Keys ​
it_tips/ssh.1493823059.txt.gz ยท Last modified: 2017/05/03 16:50 by florido