Only my friend can find the server.
I tested with 3 other players, but could not find my server.
I work with Blueprints and Session Nodes.
If I host (create Session), then my friend can find me and connect me. Conversely, too.
But if other players want to find me, they will not find me.
My friend has a router of FritzBox and no ports set. Neither do I.
I have nevertheless with me the ports set and with the other players also, unfortunately it still does not work.
DefaultEngine.ini
[URL]
[/Script/EngineSettings.GameMapsSettings]
EditorStartupMap=/Game/Maps/Menu.Menu
GameDefaultMap=/Game/Maps/Menu.Menu
GlobalDefaultGameMode=/Game/Base/GameModeProject.GameModeProject_C
GameName=UE4de_Project
GameInstanceClass=/Game/Base/Instance.Instance_C
[/Script/HardwareTargeting.HardwareTargetingSettings]
TargetedHardwareClass=Desktop
AppliedTargetedHardwareClass=Desktop
DefaultGraphicsPerformance=Maximum
AppliedDefaultGraphicsPerformance=Maximum
[/Script/Engine.GameEngine]
+NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="OnlineSubsystemSteam.SteamNetDriver",DriverClassNameFallback="OnlineSubsystemUtils.IpNetDriver")
[OnlineSubsystem]
DefaultPlatformService=Steam
PollingIntervalInMs=20
[OnlineSubsystemSteam]
bEnabled=true
SteamDevAppId=480
GameServerQueryPort=27015
bRelaunchInSteam=false
GameVersion=1.0.0.0
bVACEnabled=1
bAllowP2PPacketRelay=true
P2PConnectionTimeout=90
[/Script/OnlineSubsystemSteam.SteamNetDriver]
NetConnectionClassName="OnlineSubsystemSteam.SteamNetConnection"