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New Member

New IP for 1800 Router running VPN

I have an existing 1800 router that is using NAT and VPN to HQ. I now have a new ISP provider and so now i need to chane the Fastethernet1 IP address. I know how to do that but what else do I need to change to make everything continue to work? Thanks

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1 ACCEPTED SOLUTION

Accepted Solutions
VIP Purple

New IP for 1800 Router running VPN

1) Your own IP and routing

2) The NAT rule that references the public IP

3) Your ACL FIREWALL

4) Your two VPN-peers need to change the IP in their config (and the PSK because that was visible in your config)

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Don't stop after you've improved your network! Improve the world by lending money to the working poor:
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Don't stop after you've improved your network! Improve the world by lending money to the working poor: http://www.kiva.org/invitedby/karsteni
10 REPLIES
VIP Purple

New IP for 1800 Router running VPN

1) Your own IP and routing

2) The NAT rule that references the public IP

3) Your ACL FIREWALL

4) Your two VPN-peers need to change the IP in their config (and the PSK because that was visible in your config)

-- 
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
http://www.kiva.org/invitedby/karsteni


--
Don't stop after you've improved your network! Improve the world by lending money to the working poor: http://www.kiva.org/invitedby/karsteni
New Member

New IP for 1800 Router running VPN

Can you please tell me our show me how I would make these changes? Thanks a lot for you're help. The new Outside IP is 70.58.191.193 and the inside IP is 10.0.1.1

Thanks

Michael

VIP Purple

New IP for 1800 Router running VPN

Basically you just have to replace your old IP against the new one. Delete the old routes and configure the new as provided by your provider.

-- 
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
http://www.kiva.org/invitedby/karsteni


--
Don't stop after you've improved your network! Improve the world by lending money to the working poor: http://www.kiva.org/invitedby/karsteni
New Member

New IP for 1800 Router running VPN

My next and hopefully last question is how do I remove the line that have the old IP?

Thanks

Michael

VIP Purple

New IP for 1800 Router running VPN

I just see, that your router is configured for the new IP (70.58.191.193) that you mention above.

-- 
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
http://www.kiva.org/invitedby/karsteni


--
Don't stop after you've improved your network! Improve the world by lending money to the working poor: http://www.kiva.org/invitedby/karsteni
New Member

New IP for 1800 Router running VPN

Its not in this config but I was just asking how would I delete old lines within my new config.

Thanks

Michael

VIP Purple

New IP for 1800 Router running VPN

Its not in this config but

you don't make it really easy to help you ...

Commands that you don't need/want are removed with a "no" in front of the old command. At least most of the times with some exceptions, and there comes your actual config into play ...

-- 
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
http://www.kiva.org/invitedby/karsteni


--
Don't stop after you've improved your network! Improve the world by lending money to the working poor: http://www.kiva.org/invitedby/karsteni
New Member

New IP for 1800 Router running VPN

The line

ip nat inside source static 10.0.1.234 72.16.188.235

What should the last IP be in this line? I was thinking it should be my 70.58.191.198 gateway correct?

New Member

Re: New IP for 1800 Router running VPN

Here is the new Config for the router which is going out through the CenturyLink Modem that is configured as a bridge.

Thanks a lot for your help!!

Michael

New Member

New IP for 1800 Router running VPN

One more thing please, what command lines do I need to configure the router to use PPPOE and add authentication with an ID and Password. My DSL modem is set to Bridge mode.

Thanks

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