• Defaut setting is 4v4 standard server setting, Admin can choose to increase the players amount or not up to 32 players.
  
  
• The Server will work even if there no human in the game (Versus wont ever stop with ragequit)
  
  
• Server auto change map after the end of one of them.
  
  
• When you launch the server it will be automatically on c5m5 (Parish final) map for whatever reason, just votemap or start from a lobby to get the map you want.
  
  
• The votemap system include also all workshop map you will add.
  
  
• Try out the server before installing any custom map or plugins that come from somewhere else than the files i send here.
  
  
• Not any of the plugins will change the gameplay unless you allow it, everything or almost is locked for admin only so it look like the main game with little upgrades!
  
  
• Starting the server from lobby will allow random public to join it but only up to the standard limit (4 for coop and 8 for versus) you can force player to join via group steam or friend invitation or server browser but no more public random can join it from server list sadly
  
  
• Admin activity is shown to admin anonymously by defaut, it mean if you kick or slay or whatever command you use random pub won't have any notification but you and the admin on your serv will see something like: Admin kicked unkown. Can be config inside the sourcemod/cfg
  
  
• Difference with your own local server is you can leave this one the server will keep working as long you don't close the CMD box.
  
  
• You can run multiple server from the same script.bat as long you open port for each IP
  
  
• Whether it is Linux or Windows the installation is identical, just the core files are different (download links further below)

If you have questions or any other information needed you can comment below or join my discord I will answer asap!
https://discord.gg/8yeSQAF6C2

You have to download Left4Dead2 Dedicated Server from your steam tool library (it's free)


Here is directly a download link including sourcemod and metamod + the server launch script.
Everything is pre-installed you just have to follow the guidelines below to get it working.
If the link doesn't work anymore just comment please.

Windows version: Server-windows10.01.21.rar, Password is: sourcemod2020
https://drive.google.com/file/d/1yrUnXHp729ZtDdtijgZLGxHtxSSTQGcw/view?usp=sharing
Linux version: sourcemod-linux-2024.rar, Password is: sourcemod2020
https://drive.google.com/file/d/1RuzkNrplNu-F6Ib3gsRAczrtpsY7sGx9/view?usp=sharing

Open the winrar file and then:
Copy paste the script.bat inside the folder
steamapps\common\Left 4 Dead 2 Dedicated Server





Copy paste the Addons + Cfg folder inside here if it ask you to replace, click yes.
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2



How to start your server: Just start the "script.bat" and something like that should appear and load

If you close it, your server will shut down. it work exactly like the console ingame but for your server, you can input command inside like "_restart" to restart your server. 2 box will open, one empty and one full of text, the empty one is something that will automatically restart your server in case it crash, if you close it server won't restart.

So your server is ready BUT you won't have any admin acces, to create admin permission it's really simple:

Go inside your folder
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\sourcemod\configs
Open with any text editor "admin_simple.ini" like below

Scroll down untill you see this and replace the "exemple" with your nickname or anyone nickname and add your steam ID or anyone else steam ID to give you or him full permission.


CAUTION you can look for how to lower permission level, 99:z give 100% full power (inside the server) mean if one of your admin want to kick/ban you they can (you can still unban yourself easily but it's annoying to be kicked from your own server no?)

reservation......a.....Reserved slot access.
generic............b.....Generic admin; required for admins.
kick..................c.....Kick other players.
ban..................d.....Ban other players.
unban..............e.....Remove bans.
slay..................f......Slay or harm other players.
changemap.....g......Change the map or major gameplay features.
cvar.................h......Change most cvars.
config...............i......Execute config files.
chat..................j......Special chat privileges.
vote.................k......Start or create votes.
password.........l......Set a password on the server.
rcon.................m....Use RCON commands.
cheats.............n.....Change sv_cheats or use cheating commands.
root..................z.....Magically enables all flags and ignores immunity values.

give the letters above to your people to grant them each permissions related to each letters instead of the "z", exemple: "abckgh"

You can add as much admin as you want.

How to find everyone's steam ID? i recommend this site: steam xyz
copy paste your profile link to the box and take the first line "STEAM ID"
https://steamid.xyz/


How to check if it work? go in your server and type "!admin" or "/admin" you should see a menu on your screen.

Here is a command for all your admins to make life easy.
It's located in your game folder and not your server this time.

Steam\steamapps\common\Left 4 Dead 2\left4dead2\cfg

Open the "autoexec.cfg" in a text editor and add those lines anywhere:


So it look like this:



Why doing that?
You have to know that on defaut the server will be 4v4 as a normal server, people will still be able to join you but will be stuck in spectators so just input in your console something like "5v5" or "8v8" or "12v12" whatever up to "16v16" to increase player limits depend how much you need.
if you do not use it you must type in console "sm_rcon exec 4v4" or "sm_rcon exec 6v6"......

In coop or survival players will auto join survivors so you can play up to 16 players coop
In versus player will join whatever the team they want, they can change by saying "!teams" in the chat, here you can play up to 32 players.

IMPORTANT
So that the survivors can join they need bots to take, for that you will have to write in the console "sm_createplayer" or directly in the chat "!createplayer" as the server will spawn bots depending on the number of players you have ask.

Exemple you put "6v6" so the server will consider 6 survivors + 6 infected (4 by defaut) the server will spawn 2 more bots.
If you put "4v4" again then the server will automatically delete all bots after a while to be back on a 4 survivors vs 4 infected.

I can't help much here because it's different in every country and operators.
you must open port 27015 and 27016 in NAT/PAT for highest efficiency.
People won't be able to join your server if ports are closed.

Google how to open ports with your own internet provider!

This is mine (french)
name: l4d2 / l4d3 (doesn't matter)
port: 27015 / 27020 (internal / external)
les deux mean both = UPD/TCP you only need UPD
Make sure to open the ports for the machine the servers are running on!


You don't need so many ports, i recommend to open 27015 and 27016 and if you want to use more servers then go on.


Common issue when hosting the servers on a dedicated machine: you will have to allow port in your firewall by going inside the firewall of the machine then Advanced Settings then the following:

These 3 steps are used to start your server once you're in-game:

Edit your server name in the cfg folder - "server.cfg" just put whatever you want it is what people will see through steam group server or server browser.
Change the 3 green text into your own name.



Create a steam group (optional) and invite your friend or anyone so they can see your server in the steam group server in main menu.
You must input the Group ID inside the "server.cfg" located in
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\cfg
sv_steamgroup "Group ID"
To find this ID you must be admin of the group or ask the admin, it will be shown on the main page when editing it.

I created a group where you can all put your server so everyone in the group can see it, feel free to use it.
https://steamoss.com/groups/l4d2rds


Start your server from any lobby:

Input in your console when you are the lobby leader
"mm_dedicated_force_servers yourip:port"

How to find your server ip? just type "status" in console from your server or from the "script.bat" box.
Under the green line will be your public IP needed to launch your server.

• If you install the server on a different machine you need to install left4dead2 (if you use steam cmd) in order to get all the files and a proper installation.
  Once the installation is done you can uninstal the game.
  
  
  
• If you can't connect to your server at all you may need to allow srdc.exe in your firewall.
  
• It can also come from a problem from steam like a compatibility option or beta version? Make sure to check if your steam if properly installed and running
  
  
  
• Connection lost after 10 retries is most likely a port forwarding problem.

If you go in your server path cfg/server.cfg you can tweak game cvar, add or remove whatever you want if you know what you are doing, here some example of what's exist in the file:

if you put "//" in front of any line it will disable the line, here it will improve infected and survivors bots behavior and also spawn more tank/witch over maps so if you don't want any of those just add the //

Sometimes newer update and plugins are only working on newer update of sourcemod/metamod so you will have to update them, it is quite easy: make sure to take windows because that where this current server is built for

google: sourcemod download
https://www.sourcemod.net/downloads.php
google: metamod download
https://www.metamodsource.net/downloads.php?branch=stable

once you have downloaded both, copy addons folder from metamod into sourcemod folder then go in addons/sourcemod/config and delete "admin_simple.ini" because you don't want to remove your admin permission from that file.

Final step, copy the "addons" folder in to your server merging it with the existing "addons" folder and replace everything, boom you updated sourcemod/metamod.

You don't need to update every single time a new branch come out, i would recommend to do it at least once or twice a year or if one of your plugin require it.

How to see your current version: type in the black box "sm version" and you will see this:

How to install custom map to your server?

Subscribe to the map you want via the workshop then go inside your game folder (not server)
Steam\steamapps\common\Left 4 Dead 2\left4dead2\addons\workshop

Copy all the MAPS (not your skin or any weird stuff you have downloaded)

Paste all the MAPS in this location (your server)
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\workshop


BONUS here a collection of custom map from a friend that work in VERSUS
https://steamoss.com/sharedfiles/filedetails/?id=1131624513


BONUS INFORMATION
Be carefull downloading some maps like "the hive" will change some skin or sound in all the maps of your server and even can make common infected buggy.

You don't want to download / check the update all the time for all the map you own?
Copy paste all of them inside your addons folder (YOUR game NOT the server)
Steam\steamapps\common\Left 4 Dead 2\left4dead2\addons

Then unsubscribe from them all, you can still use maps but you won't have the check for update loading when you start your game but you won't receive anymore update either so make sure to keep those you want updated subscribed.

You must go there
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\cfg\sourcemod


Then open any plugin you want to modify with a text editor if the creator allow it and change whatever you want, don't forget to restart your server to save changes!


In this Fortspawn exemple i can change if it's enabled on defaut or not, if it's admin only or not and how much you can spawn per map (i changed to 999)

Everything with "//" are just comments, changing this line won't affect anything.

Use this mod to be able to start a lobby with 8 player in any game mode, random pub will also be able to join your server up to 8 players instead of 4.

The mod tell you to add -insecure in launch option BUT you won't need it because the server has VAC disabled already.

You have to be at least 2 players to start the lobby for 8 since it will look like a versus game but no worries it won't be a versus (unless you start in versus lobby)

https://steamoss.com/sharedfiles/filedetails/?id=546656726&searchtext=8+player+lobby

Here you can download plugins, just find whatever you want and follow installation instruction from creators:
http://www.sourcemod.net/plugins.php?cat=0&mod=6&title=&author=&description=&search=1

Be carefull some plugins may cause crash and various change in the server.

You can config almost every plugins you add in this location:
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\cfg\sourcemod
You must restart you server everytime you install / change anything in order to work.


I added in the location below some useful plugins feel free to remove or add more
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\sourcemod\plugins

l4d_superversus.smx
Used to have the 32 players as l4dtoolz(not a plugin)

l4d_sm_respawn.smx
Admin: type !respawn "nickname" to respawn a player on your crosshair
exemple: "!respawn deir" will respawn myself where im looking at.

l4d2_bwa_teamspanel.smx
Anyone: can type !teams to switch teams, you also have acces in admin menu to force switch/swap

sm_goto.smx
Admin: type "!bring nickname" to teleport someone to your crosshair and "!goto nickname" to teleport yourself to someone position.

voteblocker.smx
This will prevent anyone to votekick Admin by blocking the vote, after 10 tries they will be instant kick

l4d2_iammo.smx
Admin: Create a new menu in admin menu (!admin) to grant anyone infinite ammo

L4DSwitchPlayers.smx
Allow admin to force switch player in any game mode even coop or survival you can be infected (little bit buggy), difference with !teams that won't allow you to switch to infected if it's not Versus.

l4d_gear_transfer.smx
Anyone included bots: can transfer kit,pills,throwable to anyone by pressing RELOAD key

l4d_gamemodechanger.smx
Admin type !gamemode to switch between campaign, versus or survival.

poof.smx
Grant a total invisibility by saying !poof (!poof again to be visible)


steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\sourcemod\plugins/disabled
Just copy paste them back in the plugin folder to activate them back.

[L4D2] Defib using bots.smx
Bot will auto defib any dead players if they own a defib.

scavengebotsds.smx
Allow bots to hunt and fill gascan on Dead center and many custom maps (Dark carnival Remix for exemple)

fortspawner.smx
Admin menu that give permission to spawn/delete any items like cars or bigger stuff like bridge or stairs: say "!fortspawn_menu" for more info i redirect you the creator page
https://forums.alliedmods.net/showthread.php?p=1208693

helicopter_l4d2.smx
Anyone: type "!h" to spawn a copter with missile and gatling (very powerful)

l4d_fyzb_en_v20.smx
Anyone: type "!fyzb" to be able to jump like a hunter (walk + jump)

l4d_gun_cabinet.smx
Admin: type "!gun_cabinet" to open a menu to spawn cabinet full of guns
CAUTION it will be saved forever on the map even if you reload/restart server
to remove it type in console "sm_gun_cabinet_wipe" the cfg file will be erased.
CAUTION can cause CRASH on some custom maps!!

l4d_lamp.smx
Admin: type "!lamp" to open a menu to spawn any kind of working lamp if you're scared in dark. Can be saved permanently on maps.

l4d_machine.smx
Anyone: type "!machine" to spawn an automated minigun that will kill every infected passing in their sight. Extremely powerful.
CAUTION can cause CRASH on some custom maps!!

l4d2_fireworks.smx
Fireworks will be more beautiful.

lerptracker.smx
Will show lerps of anyone when the player connect or change it, anyone can type "!lerps" to check it

advertisements.smx
Send a message of your choice every minutes in chat (you can config this message in config folder - advertissement.txt)

l4d_randomize_tank_witch_settings.smx
Change the tank and witch speed and HP (config in cfg/sourcemod)

Not installed but you might use BOT improvement:
https://forums.alliedmods.net/showthread.php?p=2804907

To config your own director (spawning rate and more..) go to this folder
steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\cfg\sourcemod
and open VScriptDirectorUnlocker.cfg

Here you can write new value to spawn more or less infected like my exemple below:

Here i will have 8 Special Infected at once maximum and maximum 2 of each type, but you can add 10 or 15 SI and 0 spitter or 4 boomer for exemple..the possibilities are infinite.

Go to this link to see more of this director option (CAUTION it may cause laggs and bugs if you touch something without knowing.)

https://developer.valvesoftware.com/wiki/L4D2_Director_Scripts#DirectorOptions

If you don't do anything the director will have défaut settings.

Yes it is possible to run the script.bat multiple time as long your ports are opens, it will auto select a free port:



If your connection and computer can handle it and if you have enough friends then you can host up to 192 players on 6 different servers............and even more

All the server will have the same plugins but they will all be on different IP.

This is not necessary for your own server if you use L4D2 Dedicated server!

You can have multiple server with the exact same installation process as above by downloading the SteamCMD instead of the L4D2 dedicated server, why is it useful? because there you can do complete different server instead of launching the same one with same setting (make a survival one, a coop one, a versus one for example..)

Installation instruction and all details:
https://developer.valvesoftware.com/wiki/SteamCMD#Downloading_SteamCMD

This very usefull guide, with much more details:
https://steamoss.com/sharedfiles/filedetails/?id=276173458


First of all, unzip and run the SteamCMD.exe somewhere, anywhere, i choose to put it in the same directory of my dedicated server.

Then an CMD box will appear asking you some stuff, first it ask you how you want to login, just login anonymously, type:



Now it will ask you the installation directory and the game server you want to install, just type this:

This one you need to change D:\Games.. to your OWN directory
and then this

This is my directory i have multiple servers.


Wait for the process to download and install everything, it can take a while, when it's finished just quit the box.

Now your new server is created you just need to do all the step above for the main installation but instead of using Left 4 Dead 2 Dedicated server you will now use this new server (you can copy paste all file in addons / cfg and the script.bat if you already installed them)
Don't forget to remove firewall restriction from it.

This to update and install more CMD servers, just put it in your steamCMD directory.
https://drive.google.com/file/d/1Yd3gRoLFrMW1iIX5qqgp2wKNU_q_UoJS/view?usp=sharing
Then config the 3 red bubble, and press update/install.



Here are mine as exemple;