YSFReflector DOS attack

[kb2ear]

I have been getting a Chinese station connecting to my YSF reflector 4 times and creating a loop and making the reflector useless. I need some way to block the connections by IP and or callsign used to login. Would like both with wildcards. The current [Block List] does not seem to happen at that level but at the user. firewalld does not seem to block the attack either unless I reboot the host.

I know this is an attack because the web page on the ip says:

This is a attack server
Attatck ysfreflector for china
[email protected]

thanks,
Scott KB2EAR

[TechMindsYT]

I had the same issue, connected 4 time simultaneously to my YSFREF, I rebooted and they didnt connect again. Would like to know the best way to block also.