Direct connect via game port and server browser
Three ports + 10 regions
Holdfast: Nations At War workshop
Napoleonic warfare multiplayer · Shooter / Historical / Large-scale
Player tools indexed: 5
Admin consoles: 8
Holdfast: Nations At War quick reference: three UDP ports — 20100 (game), 27000 (Steam query, required for server browser listing), 8700 (Steam internal comms, usually no forwarding needed). Dedicated-server appid 1424230 (Holdfast: Nations At War - Dedicated Server, type=Tool, oslist=windows,linux, native dual platform, no Wine needed), client appid 589290 (developer and publisher both Anvil Game Studios). Config is a custom plain-text format (space-separated key-value, pipe-prefixed section blocks) with serverconfig_default.txt as the base file. Administration is entirely through the in-game F1 console (rc-prefixed commands) — there is no network RCON port. 10 region codes, 12 NaW game modes, 2 Frontlines modes, 123 official maps. SteamCMD supports anonymous login on Linux; Windows requires a Steam account that owns the game. The Docker image cm2network/holdfastnaw auto-checks for updates on every start.
Player tools (5)
Instant interactive calculations and recipe plannersCommon reasons for failing to connect and how to diagnose
Official Wiki, Steam Workshop and useful links
Version timeline and update status
Official maps, game modes and factions at a glance
Server admin and config generation (8)
Config files, startup scripts and command wizards for running a serverHardware estimates and upstream figures
Three ports and multi-instance planning
Firewall commands for four platforms
Install script, Docker and systemd
Command line parameter builder
Server config generation and validation
Map rotation config and import orchestration
In-game rc command reference and admin guide
Holdfast: Nations At War Ports & Protocols
| Port | Protocol | Purpose |
|---|---|---|
| 20100 | UDP | Game traffic |
| 27000 | UDP | Steam query |
| 8700 | UDP | Steam internal comms |
FAQ
- Which Holdfast: Nations At War server-admin tools are available?
- We list 8 tools for Holdfast: Nations At War: Capacity Planner, Port Map, Firewall Rules, SteamCMD Install, Startup Parameters, serverconfig Generator, Map Rotation Builder, Admin Commands. All of them run straight in your browser.
- Which ports does Holdfast: Nations At War need open?
- Holdfast: Nations At War defaults to 20100/UDP, 27000/UDP, 8700/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 Holdfast: Nations At War server?
- Install it with SteamCMD — the dedicated server app id for Holdfast: Nations At War is 1424230, so +app_update 1424230 validate downloads or updates it. Config files usually live at serverconfig_default.txt, serverconfig_myserver.txt, LaunchServer.ps1.
- 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.