In this article, we will see possible solution for “PuTTY Fatal Error Network error: Software caused connection abort”
Reason:
Windows triggers this error in PuTTY if it has given up on the machine at the other end of the connection. In this article we will configure PuTTY to attempt to keep idle connections alive.
Possible Solution:
To solve this issue, we can configure PuTTY to send null packets and TCP keepalives every few seconds.
We have to enable TCP keepalives option on Putty configuration Connection as highlighted below.
What is TCP keepalives?
Some network routers and firewalls need to keep track of all connections through them. Usually, these firewalls will assume a connection is dead if no data is transferred in either direction after a certain time interval. This can cause PuTTY sessions to be unexpectedly closed by the firewall if no traffic is seen in the session for some time.