I have a spare linux (ubuntu) server that's been online for few years and I thought it would make an excellent crawler/Yacy node. I installed and configured the machine - everything according to the YouTube video. Nearly everything works perfectly.
One major problem: "Your peer cannot be reached from outside (which is not fatal, but would be good for the YaCy network); please open your firewall for this port and/or set a virtual server option in your router to allow connections on this port. Opening a router port is not a YaCy-specific task; you can see instruction videos everywhere in the internet, just search for Open Ports on a <our-router-type> Router and add your router type as search term. However: if you fail to open a router port, you can nevertheless use YaCy with full functionality, the only function that is missing is on the side of the other YaCy users because they cannot see your peer."
The problem: I do not have any type of firewall on the system (I'm 100% certain), and the machine is on DMZ with 8090 open, guaranteed. There is no firewall on the router, and nothing is blocking the port. CanYouSeeMe.org verifies that the port is open, and just about any port scanner says the same. Yet I'm unable to contribute my crawl to the network.
Any suggestions would be greatly appreciated.