I'm running a software listening port 31731. My client side software can connect to port 31731 on my server. Online port scan tool also confirms the port is open.
However, I check ufw status. The default rule is deny all incoming, and there is no rule allowing 31731.
~$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), deny (routed)
New profiles: skip
To Action From
-- ------ ----
Anywhere DENY IN 83.237.17.0/24
Anywhere DENY IN 45.77.149.0/24
Anywhere DENY IN 178.159.37.0/24
Anywhere DENY IN 37.115.223.0/24
Anywhere DENY IN 207.180.255.0/24
Anywhere DENY IN 42.117.48.0/24
Anywhere DENY IN 213.152.162.0/24
Anywhere DENY IN 5.227.15.0/24
22/tcp ALLOW IN Anywhere
22 ALLOW IN Anywhere
80/tcp ALLOW IN Anywhere
443/tcp ALLOW IN Anywhere
123/udp ALLOW IN Anywhere
22/tcp (v6) ALLOW IN Anywhere (v6)
22 (v6) ALLOW IN Anywhere (v6)
80/tcp (v6) ALLOW IN Anywhere (v6)
443/tcp (v6) ALLOW IN Anywhere (v6)
123/udp (v6) ALLOW IN Anywhere (v6)
~$Why is the port accessible? Could the server side software override ufw, or is ufw not configured properly?
Reset to default
