I'm connecting from my office to two servers (server 'A' and server 'B') hosted by two different providers.
Since a few days, my connection speed to server 'A' has dramaticaly slowed down. Even when opening a shell through SSH, a two pages directory listing can take 10 seconds. Using Wireshark, I can see a lot of [TCP Spurious Retransmission], [TCP Retransmission], [TCP Dup Ack], etc...
However my connection to server 'B' still works perfectly fine, and when I open a shell from server 'B' to server 'A' I'm not experiencing any latency. So I believe that the problem is due to an equipement on the route between the gateway of my office and server 'A'.
Is there any way to determine which equipment could be the cause of the problem?