 Re: 2 issues in ISP redundancy
To clarify on my previous post.
You should host your own DNS (behind the fw-1), using 1 IP from each ISP for primary and secondary. This means that even if one of the lines is down your DNS is still up and running.
The DNS must be behind the firewall for it to be able to "manipulate" the results. If your ISP hosts your DNS, you won't be able to do anything there. |