I'm new of this forum.
i work with a little lan with debian server and windows/linux clients. the server has 2 network card, 1 for the internal lan and 1 with public ip connected to a modem (with another public ip) for satellite connection.
1. i don't understand why if i ping the server public address and the modem public address from inside the network it's ok, but outside is not possible. it's without answer.
2. the same problem connecting with ssh. i can connect to both public address (server and modem) with ssh from inside the network but not from outside. "connection timed out"
what do you think about it?