Avoid "server unexpected closed network connection" when using putty

Avoid “server unexpected closed network connection” when using putty

2017-11-25 18:37

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When using putty connect to ssh server, it always get connection lost when idle for sometime, and it reports “server unexpectedly closed network connection”, there are two ways to workaround this issue:

From server side, change “/etc/ssh/sshd_confid” as following, it could bring some security issue, so it is not suggested

ClientAliveInterval 60
ClientAliveCountMax 999999999

From client side, e,g: putty

1. Load putty stored ssh session or create a new ssh session
2. Go to 'Connection'->'SSH'->'Key'-> 'Max minutes before rekey(0 for nolimit)'
3. Change it's value from 60 to 2