Joined: 07 Jan 2025 Posts: 242 Location: Bethel Park, PA, USA
Posted: Fri Dec 12, 2025 16:55 Post subject:
I'm no iptables expert, but I am using port forwarding on an MR7350. I checked mine with the same commands, and it looks similar (aside from the fact that I'm forwarding different ports). I see that one of the ports you're forwarding is 3389 (RDP), so I would guess that the target device is a Windows device. I know that I had to add a firewall rule on my Windows device to allow RDP from anything other than it's local subnet. To put that another way, my internal subnet is 192.168.6.0/24. My OpenVPN clients are 192.168.100.0/24. I wanted to allow VPN clients to RDP to one of my Windows computers, but it wasn't working. I had to add a rule allowing 192.168.100.0/24 on port 3389 in the Windows firewall. A little different than your scenario, granted, but my point is that maybe it's not DD-WRT blocking the port... _________________ Formerly dpp3530 Linksys MR7350
Gateway, 2 wired APs, NSS-ECM , Clock 1440MHz
VAPs on wlan0 and wlan1 for guest/IOT devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
SmartDNS (DOT using NextDNS, Cloudflare), DNSMasq
Wireguard and OpenVPN server
2.4GHz: dd-wrt, AX Only, ACK Timing 1350, WPA3 SAE & WPA2 w/AES
5GHz: dd-wrt, AX/AC/N Mixed, ACK Timing 1350, WPA3 SAE & WPA2 w/AES
Verizon Fios, 500/500Mbps
There is nothing wrong with the firewall rules. Did you accept on both sides... what are you trying to do?
What do you mean "accept on both sides"?
With my previous router, Linksys MR2000, I had forwarding rules in place and was able to reach my computer from the internet. With the DD-WRT loaded MR7350 I'm not able to reach the computer, I've tried RDP from another computer using the No-IP dns address and port, I've tried using the router global IP and have run tests using Simple Port Forwarding and Zenmap (NMap gui for windows.)
Quite simply I want to be able to RDP to local IP: 192.168.1.96 and have http access to 192.168.1.78.
