sometimes it seems to be impossible to establish a connection to this server. Later when a connection could then be established I am not able to see any hints what was causing this behaviour. When I am already connected to the server, it sometimes happens that I am not able to do anything since it won´t react (sometimes the connection will be lost after some time, sometimes it can be kept). It seems to be the same times when no connection can be established at all.
For connecting ssh the error message is:
ssh: connect to host myhost port 22: Connection timed out
The server shouldn´t be to busy according to the cpu / memory at any given time. I´ve already checked the memory with MemTest86+ without any errors.
dmesg lists no further messages for this.
Does anyone have a clue, what I might check / look up?