Limits on Port Forwarding Configuration
Limits on Port Forwarding Configuration
Hello! Welcome to the forum. I'm just starting out and need some guidance on an issue with my router. It's limiting me to 20 ports forwarded, but I want to upgrade to something that allows up to 40 ports. I'm looking for a router that fits within a $300 budget. The model I have now is a Netgear AC1900. If anyone has any tips or links, it would be really helpful.
Have you checked for any external firmware available for the system?
ASUS RT models support 128 ports using RMerlin custom firmware. You might want to try updating your router's firmware or at least test it before purchasing a new device. If you can adjust which ports are active and forward multiple connections to one device, you can simplify your setup—like changing listening ports from 11111, 22222, 33333 to 11111, 11112, 11113 so all traffic goes to the same machine instead of separate rules. Updated August 1, 2020 by BobVonBob Needs RMerlin
False, Asus routers are capped at 30 devices, though the RMerlin firmware can support up to 128 under certain conditions.
Yes, the numbers are correct. Stock at 32, RMerlin at 128. Sorry for the mistake.
Keeping configuration for many port-forwards requires only a few kilobytes, especially when saved in a text-based config file and even less in binary form. Creating this space isn't hard, even on a 4MB flash drive. I don’t know if OpenWRT sets a limit on port-forwards, even on such a small device. It’s also misleading to claim there’s no storage needed; the NVRAM is just a partition on the flash, similar to how firmware lives on the same flash but usually elsewhere. Today’s routers often have 16MB or more of flash and support adding extra apps and plugins.