I've ran into this myself. I couldn't ssh into my server until I disconnected the router (home server, and I was in the LAN). Turns out it was an extreme case o

I've ran into this myself. I couldn't ssh into my server until I disconnected the router (home server, and I was in the LAN). Turns out it was an extreme case of ssh bruteforce attempts that maxed out connection count or maxstartups or something like that. Don't remember exactly which resource was the bottleneck.