paqctl client connection lost on TD-LTE Irancell (Fedora 43)

[Mr-undead]

Hello Dev Team 👋
I encountered an issue when using paqctl on the TD-LTE Irancell network: the client cannot connect to the server, and the client log shows the message connection lost. This issue only occurs on TD-LTE.

Tool Version:

paqctl version: [e.g., v1.0.0-alpha.12]

Client OS: Fedora 43

Problem Details:
The client receives the message connection lost in the log and fails to establish a connection.

Steps to Reproduce:

1-Set up the paqctl server on a VPS

2-Install the paqctl client on Fedora 43

3-Connect to the TD-LTE Irancell network

4-Run the client and attempt to connect to the server

Actual Result:
The client shows connection lost in the log and fails to connect.
connection lost

Expected Result:
The client should be able to connect successfully on TD-LTE Irancell.

[SamNet-dev]

This is likely ISP-level blocking on TD-LTE, not a software bug.

TD-LTE mobile networks in Iran have stricter DPI than fixed broadband and often block UDP traffic.

Solution: Try using GFK instead of Paqet - it's designed for heavy censorship:

sudo paqctl menu
Select "Install additional backend" → GFK

[amirvalipour-se]

Im using adsl+ and have the same problem I even tested via gfk but still getting connection lost on client

[SamNet-dev]

please provide the following information so I can diagnose and see what is going on

Server:

1. Output of sudo paqctl status
2. Output of sudo paqctl info
3. Which ports are open on your VPS firewall?

Client:
4. Full client log when you get "connection lost"
5. Have you tested with a different internet connection (e.g., mobile hotspot)?

Checklist:

• Is the server running?
• Is UDP port 8443 open on VPS? (for Paqet)
• Are TCP 443 and UDP 25000, 45000 open? (for GFK)
• Is Xray installed and running on server? (required for GFK)

Note: If you're using a cloud provider (Oracle, AWS, etc.), make sure both the security group AND iptables allow the traffic.

[SamNet-dev]

I'm going to close this for now, Pleas add input if you have.