RCON shares the port

Firewall rules · Sven Co-op

Classic co-op campaign · Co-op campaign / GoldSrc

Player tools indexed: 5 Admin consoles: 7

Inbound UDP and outbound 443 shown separately; RCON needs no port of its own

Player tools (5)

Instant interactive calculations and recipe planners

Reliable channel overflowed has two branches: an oversized vote list or VPN payload

#overflow has two branches#outbound 443
Open tool →

Server admin and config generation (7)

Config files, startup scripts and command wizards for running a server

27015 carries game and RCON, 26900 is the VAC start value, multi-instance step is 10

#RCON shares the game port#instance step of 10
Generate config →

Sven Co-op Ports & Protocols

Port Protocol Purpose
27015 UDP Game traffic, custom content transfers and RCON all share this single UDP port
26900 UDP Valve anti-cheat (VAC) service traffic. 26900 is only the start value: if it is taken the server auto-increments to the next available port
27005 UDP The Steam client communication port. The official port table does not list it; only LinuxGSM passes it explicitly, so this site marks it optional

FAQ

Which Sven Co-op server-admin tools are available?
We list 7 tools for Sven Co-op: Capacity budget, Port matrix, Firewall rules, SteamCMD and deployment, Startup parameters, The server.cfg generator, Admin and list files. All of them run straight in your browser.
Which ports does Sven Co-op need open?
Sven Co-op defaults to 27015/UDP, 26900/UDP, 27005/UDP. Use the actual instance configuration and allow only the listed protocols and ports. Check the host firewall, router forwarding and game visibility settings.
How do I install a dedicated Sven Co-op server?
Install it with SteamCMD — the dedicated server app id for Sven Co-op is 276060, so +app_update 276060 validate downloads or updates it. Config files usually live at svencoop/server.cfg, svencoop/listenserver.cfg, svencoop/mapvote.cfg.
Do these tools cost anything or need installing?
No. Everything runs in the page: no install, no sign-up, no cost. Enter your values and the result appears instantly, and you can copy the generated configs and commands with one click.