I'm a little confused as to how one customizes the seeder software itself so that it crawls a specified altcoin on a specified port. Is there anywhere the shows what you have to customize so that the seeder is crawling the proper network?
The OP,
PereguineBerty's Guide is very useful, but could use some copy-editing.
Start with the latest source code,
(from the original author, SIPA (Peter Wuille), as written for bitcoin)git clone https://github.com/sipa/bitcoin-seeder.git
and change things specific to your coin.
You can compare what we've done for Bitmark:
https://github.com/sipa/bitcoin-seeder/compare/master...project-bitmark:masterBasically, you should customize which node versions your seeder will report as good, the required blockheight, the protocol version, the fixed seed nodes your seeder needs to get started, the "magic" bytes of pchMessageStart[] and of course, the P2P port for your coin.
PM me if you need more help.