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The reliable 2026 method is to install the Half-Life Dedicated Server (HLDS) through SteamCMD, select app 90 with the cstrike game, get a clean vanilla server running, and only then expose it or add plugins. For internet play, the usual game port is UDP 27015. A public server also needs a reachable address, router forwarding when it is hosted at home, a host-firewall rule, and testing from outside your own network.
Prefer not to run the server on your own PC? Godlike.Host offers hosted CS 1.6 servers with free DDoS protection and up to three free backups a day.
This guide uses Linux commands and a dedicated non-root account. The same decisions apply to other platforms, but file paths, service management and firewall commands differ. HLDS is a GoldSource dedicated server; it is not the old HLDSUpdateTool, which has been retired.
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What you need before installing
Plan the server around how you will operate it rather than an advertised player number. No authoritative 2026 benchmark establishes a universal CPU, memory, bandwidth or latency requirement for every CS 1.6 server. Start with a small, observed load and increase resources when real players, maps or plugins show a need.
- A Linux machine that can run 32-bit HLDS and SteamCMD libraries.
- A dedicated account that is not root; the example account name is
hlds. - Shell access, enough disk space for the server files, maps, logs and backups, and permission to run a long-lived process.
- A stable private address if the machine is behind a home router.
- UDP port control. The conventional port is 27015, although you can choose another port if it is consistently configured in the launch command, firewall and router.
- A separate Steam client or another network for testing. A test from the same LAN can succeed even when internet players cannot connect.
Decide whether the server is LAN-only or public before changing network settings. A LAN game does not need a public port forward. An internet server does.
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Choose where to host
Home hosting gives you physical control and usually avoids a recurring server fee, but your connection, power, router and ISP determine availability. A VPS or managed game host is useful when you cannot configure NAT or keep a home computer online. Check the provider’s terms before paying: it must permit GoldSrc servers, expose UDP 27015 (or your selected port), and allow the mods you intend to use.
| Factor | Home machine | VPS | Managed game host |
|---|---|---|---|
| Public reachability | Depends on a public address, router access and whether the ISP uses carrier-grade NAT. | Usually provides a routed public address; confirm IPv4 and IPv6 details. | Normally exposed through the host’s control panel; verify the assigned address and port. |
| UDP port control | You configure the router and host firewall. | You configure the guest firewall and any provider network rules. | The provider controls the available port range and forwarding model. |
| Uptime | Depends on your power, broadband and maintenance. | Depends on the provider and your service configuration. | Often includes platform maintenance, but read the uptime terms. |
| CPU and latency | Uses your machine and local connection; measure performance with your actual players. | Choose a location near players and check single-thread CPU performance. | Choose a location near players and ask how GoldSrc instances are allocated. |
| Backups and console | You are responsible for both. | Usually available through snapshots and a remote console, subject to the plan. | Often supplied in a web panel; confirm file and console access before purchase. |
| DDoS protection | Normally limited to what your ISP provides. | Varies by provider and plan. | Varies by provider and plan; do not assume game-specific protection. |
| Mods | Full control over Metamod, AMX Mod X and bots. | Usually full control, subject to the provider’s acceptable-use rules. | Verify that custom binaries, plugins and scheduled restarts are allowed. |
| Cost | Uses existing hardware and internet service. | Recurring fee based on the selected resources and location. | Recurring fee based on slots, resources and support. |
If your ISP uses carrier-grade NAT, normal port forwarding will not make a home server reachable. In that case, use a host with a routable address or obtain a public address from the ISP.
Install HLDS with SteamCMD on Linux
1. Create a least-privilege account
Log in with an administrative account only long enough to create the service user and install system packages. Create a locked-down account named hlds, give it ownership of the server directory, and run the game as that user. Do not run HLDS as root: a game process and its plugins should not have unrestricted access to the operating system.
2. Install 32-bit compatibility libraries
HLDS and the Linux SteamCMD distribution require 32-bit compatibility on a 64-bit installation. Enable the 32-bit architecture supported by your distribution and install its 32-bit runtime and networking libraries. Package names differ between distributions, so use the distribution’s current package documentation. If the server later reports a missing shared library, install the matching 32-bit package rather than copying an arbitrary binary into the game directory.
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3. Download SteamCMD from Valve
Use Valve’s current SteamCMD package, extract it into a directory owned by hlds, and run the SteamCMD executable once so it can update itself. Steam Support’s current guidance is explicit: “All Steam game servers now use SteamCMD to download and update game server files.” The former HLDSUpdateTool has been retired and will no longer function.
4. Install app 90 and the Counter-Strike mod
Set a dedicated installation directory, log in anonymously, and update app ID 90. The important target is the GoldSource dedicated server with the cstrike mod, not a desktop Counter-Strike installation. A typical SteamCMD session is:
steamcmd +login anonymous +force_install_dir /srv/hlds +app_update 90 validate +quitUse your actual installation path in place of /srv/hlds. The validate option checks downloaded files; it can take longer than an ordinary update. Repeat the app-update command when applying official file updates, and keep a backup of your configuration and addons before changing a production instance.
5. Launch a clean, vanilla server
Change to the HLDS directory and start the console executable with the Counter-Strike game, a bind address, a port, a player limit and an initial map:
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./hlds_run -game cstrike -console +ip 0.0.0.0 +port 27015 +maxplayers 24 +map de_dust20.0.0.0 tells the process to listen on the machine’s available interfaces. You can bind a specific local address when the host has multiple interfaces. The example uses 24 players and de_dust2 only as launch values; adjust both to the machine and audience you actually intend to support. Watch the console for the game DLL, map load and listening messages. Leave this unmodified server running long enough to identify basic library, permission and map errors before adding any extension.
Configure cstrike/server.cfg
Put persistent game settings in cstrike/server.cfg. Keep the file owned by the service account and back it up before edits. At minimum, set a recognizable name, protect remote administration, decide whether a join password is needed, disable LAN mode for internet play, and define your map rotation and rules.
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hostname "CS 1.6 Public Server"
rcon_password "{{RCON_PASSWORD}}"
sv_password ""
sv_lan 0
mapcyclefile "mapcycle.txt"
mp_timelimit 25
mp_autoteambalance 1
mp_limitteams 2The double-curly value is a reminder to replace it with a long, unique secret; do not publish the real RCON password. If you want a private test server, set sv_password to a separate join password and remove it or clear it before opening the server to the public. Keep gameplay settings consistent with the maps and player count you selected. A map listed in the cycle must exist in the server’s map directory.
sv_lan 0 is the relevant setting for internet play. For a LAN-only session, keep the server private and use the LAN setting instead; a public port forward is unnecessary.
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Verify locally before opening the server
- Start HLDS and confirm that the console reaches the map without a fatal error.
- From a Counter-Strike 1.6 client on the same network, connect to the server’s private address and port, such as
192.168.x.x:27015. - Join, change maps, and verify that the hostname, player rules and map cycle come from
server.cfg. - Stop the server and start it again to make sure configuration is persistent and the account can read every required file.
- Only after this works, add internet forwarding or third-party addons. This separation tells you whether a later failure is networking or a plugin.
Make a home server public
Reserve the machine’s private address
Give the server a DHCP reservation or a static address on the home network. Router forwarding points to an internal address; if that address changes, the rule can silently point at another device. Record the reserved address before creating the forwarding rule.
Forward UDP 27015
Create a router rule that forwards public UDP port 27015 to the server’s reserved private address on UDP 27015. If you selected a different HLDS port, use that same number on both sides where your router permits it. Steam’s router guidance uses the public-port-to-internal-address model; exact screens vary by router and ISP. A home router with port forwarding is the relevant hardware category, but the correct model depends on your topology and provider.
Allow the host firewall
Permit inbound UDP 27015 in the operating system firewall and leave unrelated inbound services closed. If you run a management interface such as SSH, restrict it to trusted addresses or keys rather than exposing additional ports unnecessarily.
Test from another network
Use a friend’s connection, a phone hotspot, or another external network. Connect to the public address and port, not the private address. Ask the tester to join, change maps and reconnect after a restart. A successful local connection does not prove that NAT, the firewall and the ISP path are correct.
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Keep a LAN-only server private
For a small local game, a listen server can be adequate; Valve distinguishes that use from a standalone dedicated server intended for internet hosting. Run the dedicated server on the private network if you want a persistent LAN instance, set the LAN mode in your configuration, and do not create a public router rule. Players should connect to the host’s private address. This arrangement avoids exposing RCON and game traffic to the internet.
Add Metamod, AMX Mod X and optional bots
Do not install extensions until vanilla HLDS is stable. Add one component at a time and keep a copy of the last working directory.
Metamod: the plugin layer
Metamod sits between the GoldSource engine and game plugins. Install the build that matches your server architecture into the cstrike/addons tree, then register it through the GoldSource game configuration used by your distribution. Some current project setups use Metamod-P as the maintained variant; treat that as a version choice and verify compatibility before production use. Exact filenames and registration methods vary between builds, so follow the documentation bundled with the version you downloaded. Restart HLDS and check the startup output before adding anything that depends on Metamod.
AMX Mod X: administration and gameplay
AMX Mod X supplies administrative and gameplay plugins on top of Metamod. Install its files under the Counter-Strike directory, create the administrator entry only after the base plugin loads, and keep users.ini private. Grant only the flags an administrator needs. A plugin that changes maps, grants weapons or executes console commands can affect every player, so inspect its source or distribution, confirm its compatibility and remove it if it produces errors.
YaPB or another bot framework
YaPB is an optional bot framework used in current GoldSrc project setups. Treat it as an independent compatibility decision: verify the binary architecture, game version and interaction with your Metamod and AMX Mod X build. Bots can help populate a private server, but they also add CPU load, configuration files and another update path. Enable them only after human-client connections work.
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- Run HLDS with no addons and save the clean console output.
- Enable Metamod alone and confirm that the server still starts and accepts a client.
- Enable AMX Mod X and test one administrative command and one map change.
- Add individual third-party plugins, restarting and checking logs after each change.
- Add bots last, then observe CPU use, map transitions and player behavior on the intended maps.
Security and routine operations
- Use a strong, unique RCON password and never post it in screenshots, forums or public repositories.
- Run the process as
hlds, not root, and keep ownership and write permissions limited to the server directories that need them. - Back up
server.cfg, mapcycle files,cstrike/addons,users.ini, logs and any custom maps before updates. - Review every plugin. Third-party code can alter gameplay, execute privileged commands or expose an administrative surface.
- Update through SteamCMD in a controlled window. Record the previous build and restore the backup if a binary or plugin becomes incompatible.
- Rotate logs and watch disk usage. A full filesystem can prevent map changes, logging and clean shutdowns.
- Keep the host operating system patched while avoiding untested library changes immediately before a scheduled match.
Troubleshooting by symptom
HLDS will not start
- Confirm the command is being run by the service account and that
hlds_runis executable. - Check that the
cstrikedirectory exists under the SteamCMD installation path and that the launch command uses-game cstrike. - Install the required 32-bit compatibility libraries and read the exact missing-library name in the console.
- Check for distribution-specific files such as
steam_appid.txtor library files required by the selected HLDS package. - Run SteamCMD app 90 again with validation, then retry without any addons.
You can join locally, but friends cannot
- Verify that HLDS is listening on UDP 27015 and that no second process has taken the port.
- Confirm the host firewall permits inbound UDP 27015.
- Confirm the router forwards to the reserved private address, not an old DHCP address.
- Check whether the ISP uses carrier-grade NAT. If it does, request a reachable address or move the server to a VPS or managed host.
- Have the external tester use the public address; private addresses work only inside your LAN.
The server appears offline after a restart
Check that the process actually restarted, the same port and map arguments were used, and the router reservation remains active. If you changed the internal address, update the forwarding rule. Keep a service or scheduled-start configuration only after manual starts are reliable, and send its output to a log you can inspect.
Metamod or AMX Mod X fails
- Stop HLDS and move all addons out of the active tree.
- Start vanilla HLDS, then enable Metamod alone.
- Confirm that the binary architecture and plugin versions match the Linux server and GoldSource build.
- Enable AMX Mod X next and read its startup log for a missing module, wrong path or incompatible binary.
- Restore plugins one by one. The last plugin added before the failure is the first one to disable, not evidence that every addon is broken.
Players are kicked or gameplay changes unexpectedly
Check server.cfg, map-specific configuration and AMX Mod X plugin settings for conflicting cvars. Disable gameplay plugins temporarily and reproduce the issue on a stock map. If the problem disappears, re-enable plugins individually and keep the configuration that caused the change out of production until it is reviewed.
Quick Recap
A practical launch checklist
- Dedicated non-root account created and server directory owned by it.
- 32-bit runtime dependencies installed and SteamCMD updated.
- SteamCMD app 90 installed with the
cstrikemod. - Vanilla HLDS starts with the intended port, map and player limit.
server.cfghas the hostname, RCON secret, LAN mode and map cycle you intend to use.- Local client can join and complete a map change.
- Home host has a reserved private address, UDP forwarding and a matching firewall rule, or the hosted provider has confirmed equivalent access.
- External client can join through the public address.
- Backups exist before Metamod, AMX Mod X, YaPB or other plugins are enabled.
- RCON, administrator files and plugin packages are stored privately and the update procedure is documented.
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