Any body,Can you help me?

[Reincarnation]

Yeah,I ask for help again.My main question is about making server,I'm a router user,before I make server,I opened my 10666 port.But when I making server,It seems someone is connecting my server,but it shows me "Unknown challenge (42) from 45.56.67.39:15300. Ignoring IP for 10 seconds."and he cannot came into my server.
Overall is like this,Can you help me?Thanks.(When I making server,I runned doomseeker,but it donot have my server)

[Russel]

Try getting a friend to connect to the server directly. Have them use the launcher's connect tab to enter your external ip directly. [You can find that at https://www.whatismyip.com/]

If that doesn't work, make sure the opened port is properly routed to your internal ip, which is listed at the bottom of the server console.

[Reincarnation]

I built my server just now,but most people cannot join,only one can join my server,what reason is it? Thanks

[Russel]

Gonna need a little more information than that.
What information did you give the one person who could connect? Was that one person on the same network as you? Did they use DoomSeeker to connect? Did they use the MM8BDM launcher?

[Reincarnation]

Okay,the first,I did not give anyone my information,I think they connected my server from doomseeker,but only one can came in and soon he left,at that time doomseeker some times showed my server,but not stable.(he came in to my server when doomseeker showed me server)
The second,I didnot sure he is the same network as me,sorry.

[Russel]

So... if someone connected without knowing your info, then they must have connected through some browser such as DoomSeeker or Internet Doom Explorer.

Try connecting to your own server through DoomSeeker if you can see it. If you can't, check the port forwarding again.

[LemonPig]

Orrrrrrr use TSPG(ONLY if there are TSPG:Painkiller servers in doomseeker.)

[Reincarnation]

Ok,this time doomseeker shows my server,but when someone connect me it still show me unkown challenge.