I had an external company add a DNS record for RDS. The IP I gave them is the first in my block (.34 - .38). The default gateway is .33. Well, the .34, which I gave for remote desktop services, is configured for my WAN entry on the firewall. When we enter the rds.domain.com or the public IP into Internet Explorer, we get the firewall. When entering either of those into an RDP client, we get the remote desktop server as expected.
Rather than change DNS, can I just change the WAN entry on the firewall to .38 without issue?