ip address change and cyberoam changes needed

After getting a new IP address and a new ISP, did the following changes to cyberoam.

1. Delete firewall rules using the relevant virtual host(s) which reference the old ISP ip addresses etc. For this, you have to go through all the firewall rules - even things like DMZ-DMZ etc.
2. Delete the relevant virtual host.
3. Create the corrected virtual host - basically only the External ip address changes.
4. Make the firewall rules again! Here, things like DMZ-DMZ rules are made automatically, when the WAN-DMZ rules are made.
5. Modify host group (if any) to add the new ips. We had the group of machines which were allowed to ssh. For this, first create a relevant host name, and add it to the group while creating it.

All these changes took around half an hour.

Later I had to change the ip addresses pointing to the web server and so on.

Edit: After 24 hours, learnt from experience :( that I should have updated the spf txt dns records before-hand! All gmail emails went to spam. Anyway, I have done so now...