Here you will find Linux specific information and links.
More generic information relating to networking is kept separate, see menu on the left margin.
The analyzer also knows about IANA registered ports, backdoor ports, and some other things. The IP addresses are linked to a whois search page. However, there are a few issues with that which you should understand. Both of above log-format documents also explain the IP, TCP and UDP headers. There is a lot of fiction out there.