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Is there any client that can request mapping and unmapping ports via UPnP port mapping behind a NAT gateway? I had problem with PortMap. I want this mostly for testing purposes.

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    It should be noted that many sysadmins disable UPnP on their routers because of a long history of security vulnerabilities in both implementation and design.
    – hackerb9
    Commented Aug 5, 2020 at 19:56

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Use upnpc from MiniUPnP.

For gateways supporting the NAT-PMP protocol, natpmpc is available from the same site.

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Complementing @user1686 answer. This is how you can do it on Ubuntu, Mint and all Debian based distros:

# Install upnpc command line
sudo apt install -y miniupnpc

# Get network ip address (typically started with 192)
export IP=$(hostname -I | tr " " "\n" | grep 192)

# External port 2222 forwarded to internal port 22
upnpc -e "upnpc test" -a $IP 22 2222 TCP

# Delete
upnpc -d 2222 TCP
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    And if you use a firewall, you have to enable UDP packets coming from the router. In my case, I use ufw, so the command would be something like this sudo ufw allow from 192.168.1.1 to any proto udp
    – Madacol
    Commented Nov 5, 2022 at 18:28
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I found upnp-router-control that make it possible to do it with a beautiful GUI interface.

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