Stopping Open DNS - FireBrick 2700: Difference between revisions

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Config -> Edit -> Setup -> General system services -> DNS service settings -> local-only
Config -> Edit -> Setup -> General system services -> DNS service settings -> local-only


*Then re-test from the Control Pages: https://clueless.aa.net.uk/dnsresolvers.cgi
*Then re-test from the Control Pages: https://control.aa.net.uk/dnsresolvers.cgi


[[File:Fb2700-dns.png|600px]]
[[File:Fb2700-dns.png|600px]]
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The web interface of the FireBrick can list what services are open, go to
The web interface of the FireBrick can list what services are open, go to
Diagnostics -> Access Check
Diagnostics -> Access Check
Enter an Source IP of an IP on the Internet.
Enter a Source IP of an IP on the Internet.


The FireBrick will then list all the services open to that IP address, e.g.:
The FireBrick will then list all the services open to that IP address, e.g.:

Latest revision as of 08:01, 31 October 2021

2700-small.png

On a FireBrick 2700 the DNS service defaults to local-only - this prevents access to the FireBrick DNS resolver from the WAN by default.

The setting for this is found in the Web config editor at:

Config -> Edit -> Setup -> General system services -> DNS service settings -> local-only

Fb2700-dns.png


Testing Access

The web interface of the FireBrick can list what services are open, go to

Diagnostics -> Access Check

Enter a Source IP of an IP on the Internet.

The FireBrick will then list all the services open to that IP address, e.g.:

DNS resolver access:-
This address is not on a local Ethernet subnet and so not allowed access.