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ssh [2012/03/29 19:14]
k2patel [Tips & Tricks]
ssh [2021/06/08 20:07] (current)
k2patel [Tips & Tricks]
Line 72: Line 72:
  
 == Show fingerprint of key == == Show fingerprint of key ==
 +<note important>​You can use -v to print random ASCII Image</​note>​
 +
 <code bash> <code bash>
 +# Using -E can specify MD5 has which mostly require to compare
 ssh-keygen -lf .ssh/​OLD/​id_rsa.pub.old ssh-keygen -lf .ssh/​OLD/​id_rsa.pub.old
 +</​code>​
 +OR
 +<code bash>
 +ssh-keygen -l -F ip.k2patel.in
 </​code>​ </​code>​
  
 +It will print for all public key in single file if there is multiple key in it.\\
 +Also, it is usefull in identifying MITM Attack by comparing against your known host.\\
  
 +== Print fingerprint on login ==
 +You can enabled printing of server key by setting following variable.\\
 +<note tip>you can setup on any of following file /​etc/​ssh/​ssh_config OR .ssh/​config</​note>​
 +<code bash>
 +VisualHostKey yes
 +</​code>​
 +
 +== Run Command from file Remotely ==
 +Place all your command in xyz file. And run as follows
 +<code bash>
 +ssh -l k2patel nice.k2patel.in "`cat xzy`"
 +</​code>​
 +
 +== Comment on public key ==
 +You can control comment on public key during generation using following command.
 +
 +<code bash>
 +ssh-keygen -t rsa -C "​k2patel rsync to remote server xyz" -f .ssh/​remote_xyz
 +</​code>​
 +
 +== Temporarily disable ssh key forwarding ==
 +This will disable key forwarding, while login with the key.
 +<code bash>
 +ssh yahoo.com -i .ssh/​id_ed25519 -o IdentitiesOnly=yes -F /dev/null -l ketan
 +</​code>​
ssh.1333048475.txt.gz ยท Last modified: 2020/08/10 02:29 (external edit)