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https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=757254520
Port forwarding in your router / PC software firewall for the following ports:
TCP ports: 80, 443, 20002, 30840, 30850, 30870
UDP ports: 30840-30859, 30870-30879
These ports are used for logging into Capcom SFV servers and P2P matchmaking, of course both players still need to have a reasonable, low ping and maintain 60 frames per second during matches to play without lag.
Explanation / Notes:
TCP 20002 = Capcom Server / CFN
TCP 80 = fight request on (usually open by default)
TCP 443 = secure login / browser (usually open by default)
TCP+UDP 30870 = Battle Lounge
TCP 30840-30859, 30870-30879 = Ranked / Casual Matchmaking
____________
If your router allows to forward TCP and UDP ports with a single rule,
you can combine them like this:
TCP: 20002
TCP+UDP: 30840-30879
This is a less safe method, because it opens more ports than necessary.
Some users also reported that the following ports helped to stabilize connections:
TPC+UDP 7777-7778 = Unreal Tournament / UT Engine
UDP 27015 = Steam Server Traffic
TCP 27015 = Steam SRCDS-Rcon-Port
UDP 3478-3480 = Steam P2P + Voice Chat + SFV on PS4
TCP 1935 = SFV on PS4 / General PS4 Port
___________________________________________
Here you can find out how to enable port forwarding in your router model:
http://portforward.com/english/routers/port_forwarding/routerindex.htm
___________________________________________
Capcom CFN2 server IPs (when connecting from Europe):
IP: Port: Usually used for:
52.40.56.46 443 Web + Login (Amazonaws)
52.42.93.64 20002 Web + Login (Amazonaws)
95.101.72.208 443 Web + Login (Amazon Akamai servers):
54.202.232.224 30840 Matchmaking (Amazonaws)
54.2XX.XXX.XXX multiple ranges
54.245.179.44 30840 Matchmaking (Amazonaws)
You can ping + route trace Capcoms login servers as following:
press: WinKey + R
type: cmd
confirm with ENTER
type: tracert 95.101.72.208
or ping 95.101.72.208
confirm with ENTER
If you can't ping Capcom servers, then a software or hardware firewall is blocking your attempt. if get any packet loss here, then you should try a wired connection instead.