Hi, I have a problem with a Debian based Server, unfortunately housed in a remote location. Two days ago, it was suddenly down and completely unreachable. After having someone reboot it, it worked for about a day, then seemed to be down again. This time, however, it was different: -The server reacts to pings -It is scannable, and all the relevant ports are open But: -Open shells were immediately blocked, and no warning had been shown -It's not possible to open any connection - the TCP/IP handshake seems to have some problems: SSH handshake As this is a private server of a small community, we don't have the resources to pay a technician to fix the problem for us, so any hints how to fix the problem after the next reboot would be highly appreciated... Thanks a lot!