Cant Host Server

[Halo 2 Big Mac]

Ive been trying to host a server for me and some friends, which I used to do all the time with no issues. However, it simply wont allow them to join/see the server. Ive tried port forwarding on my router and Ive tried with UPnP and without it on Arma. My router has UPnP enabled. Any ideas?

[=MS=Scout]

https://youtu.be/23S8GEaeX4k

[NobodysLaw]

Just gonna list the normal use case:

1. Allow the ports (if you use the default ones, 2302-2305) on your router to the interal IP of the host, UDP only (TCP not needed)
2. Allow the same ports in the windows firewall, again 2302-2305 UDP
3. Disable UPnP your router. Don't have it activated, it's not a good feature to have enabled (and not needed)
4. Check your public ip. First go to your router and look up what IPv4 you got assigned. Then go to this site and look shich IP it shows https://www.whatismyip.com/
If both are the same good, good. If not, very bad (only works then with external servers)

[Halo 2 Big Mac]

Originally posted by NobodysLaw:

Just gonna list the normal use case:

1. Allow the ports (if you use the default ones, 2302-2305) on your router to the interal IP of the host, UDP only (TCP not needed)
2. Allow the same ports in the windows firewall, again 2302-2305 UDP
3. Disable UPnP your router. Don't have it activated, it's not a good feature to have enabled (and not needed)
4. Check your public ip. First go to your router and look up what IPv4 you got assigned. Then go to this site and look shich IP it shows https://www.whatismyip.com/
If both are the same good, good. If not, very bad (only works then with external servers)

Did your #2 and #4, 4 is fine, gonna give it a try after doing #2.

Edit: Tried it after doing the steps, still does not work. Tried with and without UPnP, UPnP still enabled on my router though.

[YonV]

Have you opened up the ports on the firewall that's on your pc ?

[Halo 2 Big Mac]

Originally posted by YonV:

Have you opened up the ports on the firewall that's on your pc ?

Yea Ive dont that as well, for TCP and UDP, even though arma doesnt require TCP

[Cblln]

Originally posted by NobodysLaw:

Just gonna list the normal use case:

1. Allow the ports (if you use the default ones, 2302-2305) on your router to the interal IP of the host, UDP only (TCP not needed)
2. Allow the same ports in the windows firewall, again 2302-2305 UDP
3. Disable UPnP your router. Don't have it activated, it's not a good feature to have enabled (and not needed)
4. Check your public ip. First go to your router and look up what IPv4 you got assigned. Then go to this site and look shich IP it shows https://www.whatismyip.com/
If both are the same good, good. If not, very bad (only works then with external servers)

the addresses are different in my case, what does that mean?

[Valen]

Originally posted by Cblln:

Originally posted by NobodysLaw:

Just gonna list the normal use case:

...(snipped)
4. Check your public ip. First go to your router and look up what IPv4 you got assigned. Then go to this site and look shich IP it shows https://www.whatismyip.com/
If both are the same good, good. If not, very bad (only works then with external servers)

the addresses are different in my case, what does that mean?

It depends in what way they are different. Different numbers or an altogether different format? Groups of numbers seperated by colons? If so, that would imply IPv6 address which Arma 3 cannot handle at all.

Or 4 numbers 0-255 seperated by dots? And if the later, are the first few numbers of the 4 in the groups: 192.168.x.y, 172-16-32.x.y or 10.x.y.z.

[Cblln]

Originally posted by Valen:

Originally posted by Cblln:

the addresses are different in my case, what does that mean?

It depends in what way they are different. Different numbers or an altogether different format? Groups of numbers seperated by colons? If so, that would imply IPv6 address which Arma 3 cannot handle at all.

Or 4 numbers 0-255 seperated by dots? And if the later, are the first few numbers of the 4 in the groups: 192.168.x.y, 172-16-32.x.y or 10.x.y.z.

thank you for your answer! I have figured out the issue I had with my multiplayer, it was due to a faulty battleye installation and it is fixed now but let's hope your message will help others in need :)

[DxG6767]

Originally posted by NobodysLaw:

Just gonna list the normal use case:

1. Allow the ports (if you use the default ones, 2302-2305) on your router to the interal IP of the host, UDP only (TCP not needed)
2. Allow the same ports in the windows firewall, again 2302-2305 UDP
3. Disable UPnP your router. Don't have it activated, it's not a good feature to have enabled (and not needed)
4. Check your public ip. First go to your router and look up what IPv4 you got assigned. Then go to this site and look shich IP it shows https://www.whatismyip.com/
If both are the same good, good. If not, very bad (only works then with external servers)

uhh what do i do if my ipv4 is different from what it says in the router compared to what the website says?

edit: its different numbers not a format

[Valen]

Then your ISP provides you with a connection where you can't set up a server directly to the internet at your home location. (ISP hides/does some kind of address translation)
Alternatives are: using a vpn solution like Hamachi that all players use, rent a server that is on the internet already (pre-built Arma 3 or bare vps server you install your own Arma server on, just pay attention to hardware specs)