Yesterday, I changed the ip address range of my home LAN from the standard 192.168. to 172.16. I use VPN to access my work's internal network. Before I made this change, while connected, I wasn't able to access any of my local network resources. In addition, with the last update of the Cisco VPN software, I wasn't able to access any public sites either.
This change went smoother than I expected. I have a few devices that have static IP addresses, and I was thinking that the devices would have made it difficult for me to make this change. Here are the steps that I went through:
- Changed my Apple Airport Extreme base station to use DHCP to get it's ip address.
- Logged into the server, and gave it a static IP address in the new ip address range. (This cause the server to become inaccessible at this point)
- Connected to the Linksys WRT54GS and changed its internal ip address, and the range of the ip address that the dhcp server gave out to be in this range
- Physically connected my laptop to the Vonage ATA to change it's ip address
- Logged into the WRT54GS to change the port forwarding.
- Changed the Airport Extreme to use a static ip address again.
After doing this, everything pretty much worked. I did have to modify the configuration for cups, as it was limiting connections to the old subnet.
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