Hi,I have a problem with a Cisco 1841 router running IOS Version 12.3(11)T5.I use NAT to access the Internet through the router.Sometimes, around 3-4 times a day, all Internet access stops because our DNSserver cannot access the Internet to resolve a...

Hi,I have a 1841 router with NAT for Internet access.I have an ftp server (port 21) on the inside LAN. I want this server to be available from the Internet.I added:"ip nat inside source static tcp 10.1.5.12 21 xxx.xxx.xxx.xxx 21 extendable"to the con...

Hi,How do I permit GRE traffic to be redirected to an internal host ? I already add port 1723 redirection.I have a 1841 router with IOS version 12.

Hi,I have a 1841 Routeur with 4 interfaces, 3 private and 1 connected to the Internet.How do you configure NAT to give access to the Internet to the computers connected to the private LANs ?Thank you.