The direct-connect address; one UDP game port, with the competing query-port readings side by side
#a single UDP port#the list runs on EOS
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Official docs available
Port matrix · Longvinter
Low-poly Multiplayer Island Survival · Multiplayer Survival / Sandbox
Player tools indexed: 5
Admin consoles: 8
Four official readings side by side, plus multi-instance (no official step is given)
Player tools (5)
Instant interactive calculations and recipe plannersFive branches, including the official FAQ four steps and the EOS certificate fix
#the official FAQ four steps#the EOS certificate fix
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The two official minimums (2 GB and 3 GB) side by side; ARM is unsupported
#2 GB and 3 GB side by side#ARM unsupported
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Eight server branches whose names are version numbers; the version behind public is unverifiable
#eight server branches#branch names are versions
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The list runs on EOS; ServerRegion has five official values versus seven community ones
#five official regions#seven community ones
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Server admin and config generation (8)
Config files, startup scripts and command wizards for running a serverMaxPlayers officially defaults to 32 (AMP 64 and WindowsGSM 16 shown alongside)
#RAM required#official default 32
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Four official readings side by side, plus multi-instance (no official step is given)
#four official readings#no official step
Generate config →
The official iptables and ufw lines verbatim; 7777 never gets a TCP rule
#never TCP on 7777#the official lines verbatim
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appid 1639880 with anonymous login; Linux also needs the SDK appid 1007
#appid 1639880#SDK appid 1007
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Four launch forms side by side: -GamePort=, no arguments, the AMP -Port= form and the community -Port= form
#four launch forms#none declared effective
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23 key slots using the official defaults, with Tag/ServerTag and quoting switchable
#23 key slots#Tag/ServerTag switchable
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AdminSteamID actually takes EOS IDs (32 hex characters, space separated)
#EOS IDs, not SteamIDs#placeholders only
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The systemd unit and socket, the backup script and the server-ID extractor, each labelled with its source status
#systemd and backups#labelled as deprecated
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Longvinter Ports & Protocols
| Port | Protocol | Purpose |
|---|---|---|
| 7777 | UDP | The game port; AMP, the official wiki setup pages, the official docker compose, the old official docs and both community projects all agree |
| 27016 | TCP/UDP | The query port per the official FAQ and the official docker compose; the three setup pages on the new wiki never mention it |
| 27015 | TCP/UDP | A query port only the old official docs still ask for; the new wiki and the official compose use 27016 alone |
FAQ
- Which Longvinter server-admin tools are available?
- We list 8 tools for Longvinter: Capacity and player budget, Port matrix, Firewall rules, Install script, Startup arguments, Game.ini generator, Admin IDs and region, Ops scripts (from the deprecated repo). All of them run straight in your browser.
- Which ports does Longvinter need open?
- Longvinter defaults to 7777/UDP, 27016/TCP/UDP, 27015/TCP/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 Longvinter server?
- Install it with SteamCMD — the dedicated server app id for Longvinter is 1639880, so +app_update 1639880 validate downloads or updates it. Config files usually live at Longvinter/Saved/Config/LinuxServer/Game.ini, Longvinter/Saved/Config/WindowsServer/Game.ini.
- 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.