My friends can not connect to my astronomy server. Please help

[Quang343]

I am the one who hosted the server . through tunngle. When my friends try to connect to sever . they encounter an error . an existing connection was forcibly close by the remote host. Another one is able to connect to my server. But after a few second . he was diconnected . and can not reconnect again . i'm very frustrated and don't know what to do . please help me.

 

[Quang343]

update, i'm using version 1.7.10

 

[Kel_Co]

Please use the proper forum location for server troubleshooting.
https://forum.feed-the-beast.com/forum/server-tech-support.15/

Also, don't use tunngle, as that is more for long distance lan, just set a port forward for your router. There are plenty of tutorials online for that.