2 articles tagged "tcp syn"

Linux Iptables block remote X Window server connection
It is true that connections to remote X Window servers should be always made over SSH. SSH supports X windows connections. So my task was allow X over ssh but block unprivileged X windows mangers TCP ports.
The first running server (or display) use TCP port 6000. Next server will use 6001 and so on upto [...]
Linux Iptables Limit the number of incoming tcp connection / syn-flood attacks
A SYN flood is a form of denial-of-service attack in which an attacker sends a succession of SYN requests to a target’s system. This is a well known type of attack and is generally not effective against modern networks. It works if a server allocates resources after receiving a SYN, but before it has received [...]

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