@optiwavedotnet I think you can increase the Flood Packets Threshold to make your traffic pass. It seems that has not settings like whitelist.

@MacSquirrelJedi Even your PC has two network adapter, I think the taffic of the application may only go through one network adapter. You may need to set link aggregation for network adapter if you...

@AJR117 Port config support to add description for each port. Could it meet your demand?

@PeterGbg VPN may be able to to meet your requirements. But R600VPN doesn't support OpenVPN. It supports IPsec (IKE V1), L2TP, PPTP. You can try to use the kind of VPN that R600VPN supports.

@JLTHLA Do you mean to configure DMZ and virtual server for the same IP address? I cannot make sure whether this will cause the issue. But I think you can try to disable virtual server temporarily,...

@sparkles In my opinion, make your MR6400 as router mode. Then connect the LAN port of MR6400 to the WAN2 port of ER5120. WAN2 should be dynamic IP then it can get the IP from MR6400.