Recent content by Jargon
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Solved Potential bug with UDP NAT loopback/hairpinning
Ugh yes, thank you! That was what I had meant to link to. Browser history bamboozled me!- Jargon
- Post #26
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
I was going to enquire about the possibility of doing this to @RMerlin but I wasn't sure it if it would cause other problems. https://github.com/RMerl/asuswrt-merlin/blob/263449f32bf292fb6bc5a08cd645e61a7fb10485/release/src/router/rc/firewall.c#L4498 (edit: wrong repo, my bad)...- Jargon
- Post #24
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
Thanks for the direction and all the help with this. The script is in place and happily doing its thing now. Yea, I read about the reliability issue from the commit logs and previous discussions around it. Interesting (and annoying) about the Trend Micro stuff though. And thank you for your...- Jargon
- Post #22
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
Yes, you are right. The rule needs to be at PREROUTING in the flow. When I set ctf_pt_udp (I honestly don't know what this property relates to or where to set it in the web interface) to 1 and rebooted I could see the rule in FORWARD but it didn't fix the issue, in PREROUTING it does fix the nc...- Jargon
- Post #19
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
I came to exactly the same conclusion using the link to the source code in my previous message but I have no idea where to put it. I tried running it from the command line after enabling SSH and I couldn't seem to modify the iptables (iptables -S kept returning the same rules). I have no idea...- Jargon
- Post #17
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
It does? I didn't see anything like that when I looked... unless you mean this? I'm a high level developer and this is way beyond my networking knowledge, so I'm having difficulty wrapping my head around a lot of this heh. If I knew more about this area I might feel comfortable experimenting...- Jargon
- Post #13
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
I was actually thinking the contrary. There's a lot of stuff in the old Merlin NAT loopback code that resembles the following: #ifdef CONFIG_BCMWL5 /* mark connect to bypass CTF */ if(nvram_match("ctf_disable", "0")) { /* mark 80 port connection */ if...- Jargon
- Post #11
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
So now I understand the problem I've been digging deeper and also discovering at one time there used to be a Merlin NAT loopback option in the router which was removed due to increasing complexity to keep it working. I've actually found someone in the Valheim community running the older version...- Jargon
- Post #9
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
You are a legend. Not only does the nc UDP test work but I can now also connect to my local network Valheim server using my WAN IP again (and therefor use the in-game server list for it). I can't believe you narrowed that down so fast. I still don't understand what exactly NAT acceleration has...- Jargon
- Post #6
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
How do I disable the NAT acceleration? Is it in the web admin? I couldn't see it when I checked earlier but may have missed it. Is it something I need terminal access for? Also what are the implications of disabling NAT acceleration? Will I lose performance?- Jargon
- Post #4
- Forum: Asuswrt-Merlin
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Solved Potential bug with UDP NAT loopback/hairpinning
Hi all, hopefully this is the right place to post this. I'm running a Valheim server on my Ubuntu box on my network and after the latest game update (where they stopped using SDR/Steam relays) I've suddenly lost the ability to connect to my server using my WAN IP (those outside my network are...- Jargon
- Thread
- Replies: 26
- Forum: Asuswrt-Merlin