s, network connections and much more.
- nmap - scan your server for open ports.
- ntop web based to... e. it is network traffic monitoring software. You can see network status, protocol wise distribution of... uthentication.
==== sysstat ====
Using sar you can monitor performance of various Linux subsystems (CPU, Memory, I/O..) in real time. You can also collect all performance data on an on-going
wait connections, but don't recycle them (recycle can break clients behind NAT)
# debian 10.4 No such f... reuse = 1
# Limit number of orphans, each orphan can eat up to 16M (max wmem) of unswappable memory
#