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I port forwarded, but why is port still closed?
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Topic: I port forwarded, but why is port still closed? (Read 1007 times)
eiger3790
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Posts: 13
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I port forwarded, but why is port still closed?
«
on:
August 26, 2023, 07:52:11 am »
Hello, please help me port forward VNC 5900 for remote viewing.
I'm running vm router OPNsense 23.1.11_1-amd64
FreeBSD 13.1-RELEASE-p8
OpenSSL 1.1.1u 30 May 2023
These are the steps I processed:
Guide for Ubuntu, Access a remote desktop.
https://ubuntu.com/tutorials/access-remote-desktop#1-overview
1: Ubuntu 22.04.3 LTS jammy > Sharing is turned on.
2: VMM 4.0.0 is running VM OPNsense port forwarded to 3389 for RDP as well as 5900 and 5901 for VNC.
OPNsense > Firewall > NAT > Port Forward >
Interface: WAN, Proto: TCP, Address: *, Ports: *, Address: WAN address, Ports: 3389 (MS RDP), IP: 192.168.1.120, Ports: 3389 (MS RDP), Description: RDP.
Interface: WAN, Proto: TCP, Address: *, Ports: *, Address: WAN address, Ports: 5900 (VNC), IP: 192.168.1.120, Ports: 5900 (VNC), Description: VNC 5900.
Interface: WAN, Proto: TCP, Address: *, Ports: *, Address: WAN address, Ports: 5901, IP: 192.168.1.120, Ports: 5901, Description: VNC 5901.
3: I tested the port is forwarded, GRC Shields UP shows 3389, 5900 and 5901 have the status: stealth.
4: I also tested from my phone's RealVNC app with publicWanIP, publicWanIP:3389, publicWanIP:5900 and publicWanIP:5901, but error: The connection attempt timed out.
«
Last Edit: August 27, 2023, 12:51:02 pm by eiger3790
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eiger3790
Newbie
Posts: 13
Karma: 0
Re: I port forwarded, but why is port still closed?
«
Reply #1 on:
August 27, 2023, 04:33:07 am »
Whilst attempting to remotely connect from my phone's RealVNC app,
I ran OPNsense's Packet Capture on Interfaces WAN and LAN for port 5900 and no traffic.
I ran OPNsense's Packet Capture on Interfaces WAN and LAN for all ports and traffic.
I ran Ubuntu's GUFW and the report shows:
No 2;
Protocol TCP6;
Port 3389;
Address *;
Application gnome-remote-desktop-daemon.
No 3;
Protocol TCP6;
Port 5900;
Address *;
Application gnome-remote-desktop-daemon.
The GUFW report doesn't show port 5901?
Not sure why packets from phone aren't shown on OPNsense or Ubuntu's traffic analysis?
«
Last Edit: August 27, 2023, 11:53:11 am by eiger3790
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eiger3790
Newbie
Posts: 13
Karma: 0
Re: I port forwarded, but why is port still closed?
«
Reply #2 on:
August 28, 2023, 05:18:25 am »
This is my home network topology:
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I port forwarded, but why is port still closed?