Differences

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--- dns [2008/09/10 11:19]
a
+++ dns [2010/11/05 21:26]
a
@@ Line 1: / Line 1: @@
-====== DNS is the root of all evil! ======
+====== DNS is the "."  of all evil! ======
 ===== DNS  Terminology =====
    * **Zone** - The domain namespace is divided into regions called zones. For instance, if you have example.com, you have the example section, or zone, of the com domain.
@@ Line 24: / Line 24: @@
   * [[dns:djbdns|Tips for setting up djbdns]]
+===== Speeding Up DNS Access In Regions With Very Low Infrastructure (pdnsd) =====
+   apt-get install pdnsd
+<code |/etc/default/pdnsd>
+START_DAEMON=yes
+</code>
+<code |/etc/pdnsd.conf>
+global {
+        perm_cache=2048;
+        cache_dir="/var/cache/pdnsd";
+        max_ttl=604800;
+        run_as="pdnsd";
+        paranoid=on;
+        status_ctl=on;
+        server_port=53;
+        server_ip="127.0.0.1";
+}
+# server {
+#    label="opendns";
+#    ip = 208.67.220.220,208.67.222.222;
+#}
+server {
+        ip="8.8.4.4";
+        timeout=60;
+        interval=900;
+        uptest=none;
+        ping_timeout=500;
+        purge_cache=off;
+        caching=on;
+}
+server {
+    label="resolvconf";
+}
+source {
+        ttl=86400;
+        owner="localhost.";
+        serve_aliases=on;
+        file="/etc/hosts";
+}
+</code>
+<code |/etc/resolv.conf>
+nameserver 127.0.0.1
+</code>
+If your PC gets its nameserver from a DHCP server, you will need to reconfigure dhclient.conf to make 127.0.0.1 your primary domain server.
+Here is the file you need to edit: ''/etc/dhcp3/dhclient.conf'', uncomment or add the following line ...
+   prepend domain-name-servers 127.0.0.1;
+If you got the static ip address, in this case you just need to edit your ''/etc/resov.conf'' file and add the following entries ..
+   nameserver 127.0.0.1
@@ Line 37: / Line 97: @@
   spoof  warn
   reorder on
+===== Reverse whois lookups =====
+ If we want to check the whois info for a reverse zone, a special whois lookup is requred.
+ For example, if we have the network 212.18.32.0/24 and want to check its RIPE data, the following
+ whois query would be performed:
+<code>
+whois -h whois.ripe.net 32.18.212.in-addr.arpa
+</code>
+or\\
+<code>
+telnet whois.ripe.net 43
+.18.212.in-addr.arpa
+</code>
+[[spam|DNS greylisting]]
+[http://pgl.yoyo.org/adservers/]