How hide ssh "Connection to IP.Address closed" message on Linux

Linux
1

When I log out from ssh I see, “Connection to aaa.bbb.ccc.ddd closed” message. May I know where is the ‘connection to ec2-public-ip closed’ message coming from? How can I remove and hide ssh “Connection to IP.Address” message on Linux client?

2

You can enable quiet mode. Once enabled it causes most warning and diagnostic messages to be suppressed when using ssh command.

Hiding ssh “Connection to IP.Address” message on Linux

ssh -q user@ec2-ip
1 Like
3

Edit the ~/.ssh/config and append the following for your Host

LogLevel QUIET

Set log level to QUITE for all ssh sessions

Host *
   IdentitiesOnly yes
   ControlPath ~/.ssh/controlmasters/%r@%h:%p
   ControlMaster auto
   LogLevel QUIET

Removing ssh to a.b.c.d closed message for host named foo

Host foo
   LogLevel QUIET
1 Like
4

FYI, this will hide lots of useful and security related info too. For example, MITM message:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:dO2xwlmwxxxxxxxxxxxxxxxxxxxxxxxxxxxxxmikA.
Please contact your system administrator.
Add correct host key in /home/vivek/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/vivek/.ssh/known_hosts:238
  remove with:
  ssh-keygen -f "/home/vivek/.ssh/known_hosts" -R "192.168.2.183"
ECDSA host key for 192.168.2.183 has changed and you have requested strict checking.
Host key verification failed.

To see such message pass the -v option to ssh:

ssh -v user@host-example-com
1 Like
5

thanks for all hints and answers. it eliminated my issues.