SOLVED. firewall block rule help

[rasitha]

my dns server is 192.168.151.6
i want to block any other dns request

[Saarbremer]

Alias:
192.168.151.6 = DNS_SERVER

Floating rule:
Source: *, Destination: !DNS_SERVER, Protocol: TCP/UDP, Dest. Port: 53, block, Logging on
-> Check log if successful
-> Logging off

Solution provided as is. No liability for data loss, system outage or any other unwanted situations.

[chemlud]

hmmm, how about port 853? Not to mention DOH... ;-)

Your Google devices might go crazy.

[Saarbremer]

He was talking 'bout DNS ☝️

[rasitha]

Alias:
192.168.151.6 = DNS_SERVER

Floating rule:
Source: *, Destination: !DNS_SERVER, Protocol: TCP/UDP, Dest. Port: 53, block, Logging on
-> Check log if successful
-> Logging off

Solution provided as is. No liability for data loss, system outage or any other unwanted situations.

Tx