https://wiki.swcp.com/w/index.php?action=history&feed=atom&title=KB_426 2026-10-06T22:38:10Z Revision history for this page on the wiki MediaWiki 1.45.1 https://wiki.swcp.com/w/index.php?title=KB_426&diff=173&oldid=prev 2008-06-04T04:34:15Z

<p>New page: ===Cisco 675/678 NAT: Name server problems...=== Article:426 Created:2005-08-02 16:39:03 Categories: Modems Domain names/DNS DSL ====Question or Symptom==== In CBOS&#039;s implemen...</p> <p><b>New page</b></p><div>===Cisco 675/678 NAT: Name server problems...===<br /> Article:426<br /> Created:2005-08-02 16:39:03<br /> Categories:<br /> Modems<br /> Domain names/DNS<br /> DSL<br /> <br /> ====Question or Symptom====<br /> In CBOS&#039;s implementation of NAT, DNS query replies from your name server<br /> on port 53 are re-written to reply with the Cisco&#039;s WAN IP and a TTL of<br /> 0.<br /> <br /> <br /> ====Resolution====<br /> The workaround for this issue is to create a NAT rule that forwards port 53<br /> UDP packets to your server on a different port. To do this, you&#039;ll need to<br /> set your name server to reply on a different port (e.g, 5300) and then use<br /> this command on the Cisco to create the NAT rule:<br /> <br /> set nat entry add &lt;lan ip&gt; &lt;alternate port&gt; 0.0.0.0 53 udp<br /> <br /> More information on this issue can be found in the link below.<br /> <br /> <br /> ====Related URLS====<br /> http://www.guinix.com/technote/pdxdsl-01.html<br /> <br /> <br /> ====Related KB articles====<br /> [[KB 94]] How does one set up port forwarding on the Cisco 675 router?</div>

Jamii