explorer-monorepo/UDM_PRO_SSH_ISSUE.md

UDM Pro SSH Access Issue

Date: 2026-01-21
Status: ⚠️ SSH Connects But Commands Not Returning Output

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Issue

SSH connection to UDM Pro is successful (host key is being added), but commands are not returning output. This could be due to:

1. Permission Issues: User OQmQuS may not have permission to run iptables commands
2. Sudo Required: Commands may need sudo privileges
3. Shell Environment: Shell may be restricted or non-interactive
4. Command Execution: Commands may be running but output is being suppressed

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Alternative Approaches

Option 1: Manual SSH Session

Connect manually and run commands:

ssh OQmQuS@192.168.11.1
# Enter password: m0MFXHdgMFKGB2l3bO4

# Then run:
sudo iptables -t nat -L PREROUTING -n -v | grep "76.53.10.36"
sudo iptables -L FORWARD -n -v --line-numbers | head -50

Option 2: Check Web UI

Since SSH commands aren't working, check the Web UI directly:

1. Port Forwarding Rules:

   • Settings → Firewall & Security → Port Forwarding
   • Verify rules for 76.53.10.36 are enabled

2. Firewall Rules:

   • Settings → Firewall & Security → Firewall Rules
   • Check if "Allow Port Forward..." rules exist
   • Verify they are at the top of the list

Option 3: Use UniFi API

If SSH is limited, we could use the UniFi API to check configuration.

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Recommended Next Steps

Since automated SSH commands aren't working:

1. Manual SSH Session: Connect manually and run diagnosis commands
2. Web UI Check: Verify port forwarding and firewall rules in Web UI
3. Rule Verification: Ensure rules are enabled and in correct order

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Quick Web UI Checklist

• Port forwarding rules for 76.53.10.36:80/443 are enabled
• Firewall "Allow Port Forward..." rules exist
• Allow rules are above any block rules
• Rules are saved and applied

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Status: SSH access available but automated commands need manual execution