Static NAT & Dynamic NAT with Overload

In this short post I will configure my router allow to NAT a single port only.


router1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
router1(config)#ip nat inside source static udp 10.0.2.2 514 10.0.1.245 514 extendable


This command will allow the router accept syslog messages sent to UDP port 514 on 10.0.1.245 and translate them to UDP 514 on 10.0.2.2 which is the syslog server. Only port 514 will be available for translation.