Frequent Mudfish Nodes Becoming Unable to Connect to MapleStory (GMS) After 1-2 Days

Technical Support
1

Hello,

I would like to report an issue that I have been experiencing over the past few months while using Mudfish to play MapleStory Global (GMS) .

Issue Description

Some Mudfish nodes work perfectly at first. I can launch the game, log in, and play normally without any issues.

However, after about one day (sometimes even less), those same nodes suddenly stop working with MapleStory. The game either fails to connect or gets stuck during the connection process.

When this happens, simply switching to another node does not always solve the problem. Some other nodes also fail to connect. I usually have to keep trying different nodes until I eventually find one that still works.

What I’ve Observed

  • This has been happening repeatedly over the last several months.
  • More and more nodes become unusable over time.
  • A node that worked yesterday may completely stop working today.
  • Most of the affected nodes are US West nodes.
  • Other internet services continue to work normally through the affected nodes.
  • There are usually still a few working nodes available, but I often have to test multiple nodes before finding one that can connect to MapleStory.

Because the issue consistently affects individual nodes over time, I suspect that the IP addresses of some Mudfish exit nodes may be getting blocked or blacklisted by MapleStory/Nexon.

Request

Could the Mudfish team please investigate whether:

  1. Some Mudfish exit IPs (especially US West nodes) are being blocked by MapleStory or Nexon.
  2. There are any routing or network issues affecting these nodes.
  3. There is anything users can do to avoid this problem.

If there are any logs or diagnostic information that would help your investigation, I would be happy to provide them.

Thank you very much for your time and support.

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2

Hello! Thank you for the detailed report.

To help us pinpoint the exact cause, could you do a quick test for us? When this issue happens again with a specific node, please switch to Full VPN mode using that same node and try connecting to the game.

If it works in Full VPN mode, it means the item routing needs an update. If it still fails, the IP is likely blocked by Nexon.

Please let me know the result!

3

Hi,

Thanks for the quick reply!

I did a bit more testing because I wanted to exclude unrelated traffic like my browser, so I created a custom item that only routes the Nexon Client / MapleStory traffic.

Here’s something interesting I found:

  • If I launch the game using the default MapleStory item first, it connects without any problem.
  • After that, I can switch to my custom routing (using the same node), and the game keeps working normally.

So it doesn’t look like the node’s IP is actually blocked by Nexon, since the exact same node works after the initial connection.

For now I’m just using this as a workaround, and everything is working fine on my end.

Thanks again!

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