DNS Resolver Host Override not working in Windows

shawn8888

Here is some log from Wireshark when I did a

c:\>nslookup www.facebook.com
Server:  UnKnown
Address:  192.168.100.2

Non-authoritative answer:
Name:    star-mini.c10r.facebook.com
Addresses:  2a03:2880:f105:83:face:b00c:0:25de
          157.240.12.35
Aliases:  www.facebook.com

mydns.zip

From the log, I can read that my Windows (100.100) DID talk to pfsense (100.2), but not handled by unbound.

One more thing to mention, I did install BIND for some testing before, but it is disabled, same with DNS forwarder. Only DNS Resolver is enabled right now.

KOM

OK, you're definitely talking to pfsense for DNS. You queried it for www.facebook.com and it returned a result for both IPv4 and IPv6. Did you add the host override for www.facebook.com?

shawn8888

@KOM
Yes!

And for testing and fun, I disabled DNS resolver and run nslookup in Windows, and still able to resolve. Does that make any sense?

c:\>ipconfig /flushdns

Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

c:\>nslookup www.facebook.com
Server:  UnKnown
Address:  192.168.100.2

Non-authoritative answer:
Name:    star-mini.c10r.facebook.com
Addresses:  2a03:2880:f10e:83:face:b00c:0:25de
          157.240.14.35
Aliases:  www.facebook.com

johnpoz

So you have something else listening on 53 on pfsense then and not unbound..

lets see what is listening on 53

[2.4.4-RELEASE][admin@sg4860.local.lan]/: sockstat | grep :53
unbound  unbound    42007 3  udp4   192.168.3.253:53      *:*
unbound  unbound    42007 4  tcp4   192.168.3.253:53      *:*
unbound  unbound    42007 5  udp6   2001:470:snipped:3::253:53 *:*
unbound  unbound    42007 6  tcp6   2001:470:snipped:3::253:53 *:*
unbound  unbound    42007 7  udp4   192.168.9.253:53      *:*
unbound  unbound    42007 8  tcp4   192.168.9.253:53      *:*
unbound  unbound    42007 9  udp4   192.168.2.253:53      *:*
unbound  unbound    42007 10 tcp4   192.168.2.253:53      *:*
unbound  unbound    42007 11 udp4   192.168.6.253:53      *:*
unbound  unbound    42007 14 tcp4   192.168.6.253:53      *:*
unbound  unbound    42007 15 udp4   192.168.4.253:53      *:*
unbound  unbound    42007 16 tcp4   192.168.4.253:53      *:*
unbound  unbound    42007 17 udp4   192.168.7.253:53      *:*
unbound  unbound    42007 18 tcp4   192.168.7.253:53      *:*
unbound  unbound    42007 19 udp4   127.0.0.1:53          *:*
unbound  unbound    42007 20 tcp4   127.0.0.1:53          *:*
unbound  unbound    42007 21 udp6   ::1:53                *:*
unbound  unbound    42007 22 tcp6   ::1:53                *:*
[2.4.4-RELEASE][admin@sg4860.local.lan]/:

shawn8888

@johnpoz said in DNS Resolver Host Override not working in Windows:

sockstat | grep :53

You are right. seems BIND is running.

But I checked the settings and it's disabled.

And what is this "named"???

johnpoz

named is BIND

shawn8888

Thank you so much, johnpoz!

I manually stopped the service at Status/Services screen. And this is what I got:

c:\>nslookup www.facebook.com
Server:  pfSense.mydomain.com
Address:  192.168.100.2

Name:    www.facebook.com
Address:  192.168.100.201


c:\>nslookup 192.168.100.201
Server:  pfSense.mydomain.com
Address:  192.168.100.2

Name:    www.facebook.com
Address:  192.168.100.201

Still have questions though:

As the screenshot shows, BIND is NOT enabled. How did this service get started?
I haven't touched BIND for a long time. But I did restart pfsense for testing, which means the named service get auto started when reboot. How can I stop it?

johnpoz

No idea... Seems like you config is borked.. Export your config and look at the xml.. If not enable it shouldn't be starting - unless you manually did something like installed bind on your own vs packages, etc.

shawn8888

@johnpoz said in DNS Resolver Host Override not working in Windows:

No idea... Seems like you config is borked.. Export your config and look at the xml.. If not enable it shouldn't be starting - unless you manually did something like installed bind on your own vs packages, etc.

I installed BIND from package. I guess I will have to uninstall it later.
Thank you again for your help! You are amazing!

johnpoz

Did you maybe click on the service and start it that way? I have the package installed because time need to play with it to help users.

It doesn't auto start itself..

Learned one thing for sure - check earlier what is actually run if other users have sim issue ;) Would of solved your problem like in step one vs just trusting that all you had running was unbound.

shawn8888

@johnpoz
No I didn't start the service manually.
Very weird, isn't it? I would think only one service can be started on one port, 53. Maybe it's a bug of pfsense? LOL

One last question:
DNS forwarder, DNS resolver and BIND all do the same thing and only one should be enabled, correct?

Is DNS resolver the best in your opinion?

johnpoz

No its not a bug.. look at your bindings.. Your not bound to the same things.

Bind is the king of dns... But you do not need it on pfsense, unbound is fine... I have been managing dns for years and years.. Since back in the bind 4 days. I just use unbound... its all you need for a home setup.

its got pretty much any of the features you could possible need.. Now if wanted to run an authoritative ns, or needed slave ns then I would run bind.

KOM

@shawn8888 said in DNS Resolver Host Override not working in Windows:

I installed BIND from package.

This would have been a good nugget to know right from the start. At least it's working now.