I'm having an issue with an Ubuntu 18 LTS server where I cannot SSH to the server.
I'm connecting to a Ubuntu server via Putty SSH and have 1 router hop between my windows jump server and the Ubuntu server.
I have found that if I ping the Ubuntu server I receive the following message:
Reply from 10.10.10.10: bytes=32 time=1ms TTL=63
During an extended ping the message will change to:
Reply from 10.10.10.10: bytes=32 time=1ms TTL=127
When this happens I loose my SSH connection to the server and can not longer connect to it. once the message goes back to:
Reply from 10.10.10.10: bytes=32 time=1ms TTL=63
I can connect again.
I could not find anything on the Layer-3 device (Cisco switch) that would explain why this happened.
Question: Why would the TTL change? Is there something in the Ubuntu OS that could be causing this issue?
