Configuring NAT on 1800

Unanswered Question
Jul 16th, 2008
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Hi all,


I am not experienced with NAT or port forwarding I hope I can get help from this forum. My situation is like this. I want to be able to remotely connect to a DVR (digital video recorder) via the internet. What I want is to connect via the router's public address on a certain TCP port and get this forwarded to a Private LAN address like for example 192.168.1.10. I am using a client software for the video recorder. My video recording software runs on windows XP. I did this setup with other DSL routers and it work perfect. I never did this on Cisco device


How can I achieve this? I tried this but it not working


ip nat inside source static x.x.x.x 192.168.1.10


This is how my LAN side is configured


interface Vlan1

description LAN-ACCESS

ip address 192.168.1.9 255.255.255.248 secondary

ip address x.x.x.x 255.255.255.248


x.x.x.x is my public address. I am using 192.168.1.9 as my gateway on the XP machine and 192.168.1.10 as an IP address of the machine. If I allocate my DVR a public address, I can connect perfectly. I guess this point to the NAT problem


Any input will be highly appreciated


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dhananjoy chowdhury Wed, 07/16/2008 - 23:40
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NAT to Send incoming connections to the WinXp box.


ip nat inside source static x.x.x.x 192.168.1.10


If f0/1 is the Internet(outside) interface,

int f0/1

ip nat outside

and

interface vlan1

ip nat inside


Also if there is an access-list on the ouside interfce, then allow connections to the WinXp box.

emmanuel.shoroma Wed, 07/16/2008 - 23:54
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I am using WAN interface (ATM0)to connect to the internet and assigned a public address to my VLAN1 interface. all myEthernet interfaces are for local connection. I am uing FastEthernet0 to connect to my DVR and the rest are not used.



interface ATM0


no ip address


no ip redirects


no ip unreachables


no ip proxy-arp


load-interval 30


no atm ilmi-keepalive


dsl operating-mode auto


!


interface ATM0.1 point-to-point


no ip redirects


no ip unreachables


no ip proxy-arp


pvc 8/35


pppoe-client dial-pool-number 1


!


!


interface FastEthernet0


description LAN-ACCESS


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