Results 1 to 5 of 5

Thread: Bind9

Hybrid View

  1. #1
    Join Date
    Sep 2011
    Beans
    7

    Bind9

    I have been banging my head against the wall for the past couple of days, and have not been able to find an answer to this.

    I have installed BIND on Ubuntu 12.04. Since the install, I have made the following changes to the named.conf.options file.


    forward only;
    forwarders {
    24.217.0.5;
    24.217.201.67;
    };
    listen-on-v6 { none; };

    My ultimate goal is to have this server serve as a DNS host for our company as well as forwarding any requests it cannot answer to the forwarders. I would also like to continue to use BIND since we will be working on a project with ISC-DHCP in the very near future.

    Using dig @127.0.0.1 www.perl.org +trace, I receive the following results.

    ; <<>> DiG 9.8.1-P1 <<>> @127.0.0.1 www.perl.org +trace
    ; (1 server found)
    ;; global options: +cmd
    . 3600000 IN NS B.ROOT-SERVERS.NET.
    . 3600000 IN NS L.ROOT-SERVERS.NET.
    . 3600000 IN NS K.ROOT-SERVERS.NET.
    . 3600000 IN NS D.ROOT-SERVERS.NET.
    . 3600000 IN NS G.ROOT-SERVERS.NET.
    . 3600000 IN NS M.ROOT-SERVERS.NET.
    . 3600000 IN NS F.ROOT-SERVERS.NET.
    . 3600000 IN NS H.ROOT-SERVERS.NET.
    . 3600000 IN NS J.ROOT-SERVERS.NET.
    . 3600000 IN NS I.ROOT-SERVERS.NET.
    . 3600000 IN NS C.ROOT-SERVERS.NET.
    . 3600000 IN NS E.ROOT-SERVERS.NET.
    . 3600000 IN NS A.ROOT-SERVERS.NET.
    ;; Received 228 bytes from 127.0.0.1#53(127.0.0.1) in 86653 ms

    org. 172800 IN NS b0.org.afilias-nst.org.
    org. 172800 IN NS c0.org.afilias-nst.info.
    org. 172800 IN NS b2.org.afilias-nst.org.
    org. 172800 IN NS a0.org.afilias-nst.info.
    org. 172800 IN NS d0.org.afilias-nst.org.
    org. 172800 IN NS a2.org.afilias-nst.info.
    ;; Received 432 bytes from 192.203.230.10#53(192.203.230.10) in 17397 ms

    perl.org. 86400 IN NS ns1.eu.bitnames.com.
    perl.org. 86400 IN NS ns1.us.bitnames.com.
    perl.org. 86400 IN NS ns1.p20.dynect.net.
    perl.org. 86400 IN NS ns2.us.bitnames.com.
    perl.org. 86400 IN NS ns2.p20.dynect.net.
    perl.org. 86400 IN NS ns2.develooper.com.
    ;; Received 181 bytes from 199.249.120.1#53(199.249.120.1) in 23716 ms

    www.perl.org. 300 IN CNAME varnish-lb.develooper.com.
    ;; Received 69 bytes from 208.78.70.20#53(208.78.70.20) in 29 ms

    Doing a similar query by using an external DNS server, I see the following.

    ; <<>> DiG 9.8.1-P1 <<>> @24.217.0.5 www.postfix.org +trace
    ; (1 server found)
    ;; global options: +cmd
    . 384218 IN NS e.root-servers.net.
    . 384218 IN NS c.root-servers.net.
    . 384218 IN NS j.root-servers.net.
    . 384218 IN NS m.root-servers.net.
    . 384218 IN NS d.root-servers.net.
    . 384218 IN NS i.root-servers.net.
    . 384218 IN NS a.root-servers.net.
    . 384218 IN NS b.root-servers.net.
    . 384218 IN NS f.root-servers.net.
    . 384218 IN NS k.root-servers.net.
    . 384218 IN NS l.root-servers.net.
    . 384218 IN NS h.root-servers.net.
    . 384218 IN NS g.root-servers.net.
    ;; Received 512 bytes from 24.217.0.5#53(24.217.0.5) in 14 ms

    org. 172800 IN NS a2.org.afilias-nst.info.
    org. 172800 IN NS a0.org.afilias-nst.info.
    org. 172800 IN NS b0.org.afilias-nst.org.
    org. 172800 IN NS d0.org.afilias-nst.org.
    org. 172800 IN NS b2.org.afilias-nst.org.
    org. 172800 IN NS c0.org.afilias-nst.info.
    ;; Received 435 bytes from 192.33.4.12#53(192.33.4.12) in 39 ms

    postfix.org. 86400 IN NS ns5.cloud9.net.
    postfix.org. 86400 IN NS ns2.cloud9.net.
    postfix.org. 86400 IN NS ns4.cloud9.net.
    postfix.org. 86400 IN NS ns1.cloud9.net.
    ;; Received 115 bytes from 199.19.54.1#53(199.19.54.1) in 351 ms

    www.postfix.org. 86400 IN A 131.211.84.186
    www.postfix.org. 86400 IN A 168.100.10.85
    postfix.org. 86400 IN NS ns1.cloud9.net.
    postfix.org. 86400 IN NS ns2.cloud9.net.
    postfix.org. 86400 IN NS ns4.cloud9.net.
    postfix.org. 86400 IN NS ns5.cloud9.net.
    ;; Received 323 bytes from 82.130.104.214#53(82.130.104.214) in 146 ms

    Any suggestions as to what I am missing would be greatly appreciated.

    Thank you in advance for your help.



    Jay

  2. #2
    Join Date
    Sep 2011
    Beans
    7

    Re: Bind9

    After having lunch, and re-reading my post, I realize how horribly my question was written.

    When querying my internal DNS server, requests almost always time out before the name is resolved. Resolution of internal names works correctly; lookups only fail for external namees.

    Using dig, nslookup, etc. when querying an external DNS server resolution happens as expected.

    Sorry for the lack of information.

    Thanks,



    Jay

  3. #3
    Join Date
    Feb 2011
    Location
    Coquitlam, B.C. Canada
    Beans
    1,334
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Bind9

    I run bind as the DNS for my internel network, and get normal times for lookups that need to be sent upstream to the forwarders. I don't know what the problem is with your system, but I did notice that our named.conf.options files are a little different. I'll post mine:
    Code:
    options {
            directory "/var/cache/bind";
            recursion yes;
            allow-recursion {any;};
            allow-query {any;}; // this is needed to override the default
            allow-transfer {"none"; }; // transfer will be allowed per zone below.
            // If there is a firewall between you and nameservers you want
            // to talk to, you may need to fix the firewall to allow multiple
            // ports to talk.  See http://www.kb.cert.org/vuls/id/800113
            // If your ISP provided one or more IP addresses for stable
            // nameservers, you probably want to use them as forwarders.
            // Uncomment the following block, and insert the addresses replacing
            // the all-0's placeholder.
            forwarders {
                    75.153.176.9;
                    75.153.176.1;
            };
            auth-nxdomain no;    # conform to RFC1035
            listen-on-v6 { any; };
    };
    Note: While I don't use ip-v6, I left that line.
    I don't know if this reply will be any help, but since it has been a day and nobody else replied ...

  4. #4
    Join Date
    Oct 2007
    Location
    Port Colborne Ont Canada
    Beans
    86
    Distro
    Xubuntu 13.04 Raring Ringtail

    Re: Bind9

    do you have dhcp issuing ip's and what dns server is being passed to your clients.
    if you internal dns server is not in the list first the internal query wil time out because it is going pass the internal dns server and directly to the external dns servers(your fowarders)
    also if your clients are static ip what dns server is in there setup
    running ubuntu servers, 12.04.3 lts and Pfsense 2.1,
    web hosting and email hosting with 2 ubuntu clients
    uberstudent on laptop
    and 3 networked printers

  5. #5
    Join Date
    Mar 2005
    Beans
    211

    Re: Bind9

    Anyone interested in having bind9's forwarders list get dynamically updated, please add your voice to the following (wishlist) bug report.

    https://bugs.launchpad.net/ubuntu/+s...9/+bug/1091602

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •