Configure DNS to reverse this IP



  • I'm trying to get names to go with my IP's in BandwidthD.

    It is telling me to "Configure DNS to reverse this IP"

    I know it should be simple, but I'm accessing it remotely, and I'm scared if I do it wrong I'll kill the connection and have to wait a week or so to get to it locally to fix it.



  • Just go to System -> General and put in some DNS servers.



  • I did so, but the problem remained. Maybe it's not working for IP on the LAN?



  • On LAN … most likely not ... unless you use an internal DNS server to serve that to pfSense.


  • LAYER 8 Global Moderator

    So you can use the dns forwarder and setup records for your boxes for dns, or have it resolve dhcp clients..  So for example clients on my network can resolve my 192.168.1.x IPs via the dns forwarder on pfsense.

    ;; QUESTION SECTION:
    ;100.1.168.192.in-addr.arpa.    IN      PTR

    ;; ANSWER SECTION:
    100.1.168.192.in-addr.arpa. 1  IN      PTR    i5-w7.local.lan.

    ;; Query time: 3 msec
    ;; SERVER: 192.168.1.253#53(192.168.1.253)

    So depending on how you have pfsense itself for dns you may or may not be able to resolve them.

    so since I point pfsense to 127.0.0.1 it works on pfsense

    [2.1-BETA0][admin@pfsense.local.lan]/root(2): dig -x 192.168.1.100
    ;; QUESTION SECTION:
    ;100.1.168.192.in-addr.arpa.    IN      PTR

    ;; ANSWER SECTION:
    100.1.168.192.in-addr.arpa. 1  IN      PTR    i5-w7.local.lan.

    ;; Query time: 4 msec
    ;; SERVER: 127.0.0.1#53(127.0.0.1)

    But if you are pointing pfsense to say your ISP, then no it would never resolve a PTR for a private network IP.



  • Activated rules DHCP Registration and Static DHCP in the tab Services: DNS forwarder and it worked. Thanks for the advice!


Log in to reply