decicated server

Make the following changes to the server.cfg file: //NOTE: or copy and paste the information below into your server.cfg folder:

// Modern Warfare 3 Server Configuration

//////////////////////////////////////////////////////////
// Server command-line parameters (this section is for documentation only)

// Specify server configuration file (this file) //NOTE: Be sure to change to your config.cfg file if you create your own.
+set sv_config "server.cfg" //(default "server.cfg") //NOTE: Be sure to remove the // so command works.

// Specify server visibility (1 = LAN, 2 = Internet (default) //NOTE: For server visibility on your lan or internet.
+set dedicated 2 //NOTE: Be sure to remove the // so command works

// Open game port (Steam-visible server game port) //NOTE: This port (TCP & UDP) has to be open in your router and firewall
+set net_queryPort 27014 //NOTE: Be sure to remove the // so command works.

// Secure game port //NOTE: This port (TCP & UDP) has to be open in your router and firewall
+set net_port 27015 //NOTE: be sure to remove the // so command works.

// Steam authentication port //NOTE: This port (TCP & UDP) has to be open in your touter and firewall
+set net_authPort 8766

// Steam master server (server browser) port //NOTE: This port (TCP & UDP) has to be open in your touter and firewall
+set net_masterServerPort 27016 //NOTE: Be sure to remove the // so command works

//////////////////////////////////////////////////////////
// Server.cfg-configurable settings

// Server host name. This should always be set by the server admin.
seta sv_hostname "MY MODERN WARFARE 3 SERVER NAME" //NOTE: Change to your desired server name.

// Dedicated server play list (.dspl) Specify the server map rotation. //NOTE: Set up via notepad or game setup.
// Dedicated server recipe (.dsr) Specify valid game options. //NOTE: Set up via in game or via notepad inside the .dsr file located in the admin folder.
seta sv_maprotation "juggernaut" //NOTE: change to your desired game type (.dsr file).

// Maximum number of clients that may connect to this server (range 1-18) //NOTE: change to your desired number of server slots.
seta sv_maxclients 18

//NOTE: Go here: http://www.speedtest.net/ to check your upload and download speeds. If you have low upload and/or download speeds, your server will experience rate issues. Consider only allowing a small number of people on your server, try a 4 or 8 and up the number as you see fit based on your upload and download speeds and your servers ability to support that number.

// Server password, if set, users will be prompted for password to join server. //NOTE: Set for a private server, all users will need to enter password.
seta g_password ""

// Maximum number of private clients allowed on the server (range 0-18 (clamped to sv_maxclients)
seta sv_privateClients 0 //NOTE: Number of reserved slots for (Admin) access to server if server is full. All users will be asked for password but not required for access unless server is full.

// Password for private (Admin) server slots. If set, all users will be prompted on join attempt.
// Users providing this password will have access to all slots.
// Users providing incorrect password have access to the (sv_maxClients - sv_privateClients) public slots.
seta sv_privatePassword "MY PRIVATE PASSWORD" //NOTE: All public visitors will be asked but don't need to enter password to join unless server is full.

// Remote console password. If set, Admin will have access to a remote console (RECON), allowing server administration from a connected client.
seta rcon_password "YOUR RCON PASSWORD HERE" //NOTE: RCON access for Server Admin control via the ~ key while in game.
//NOTE: Press the ~ key (or whatever you press to access the console) and type: login + your rcon password while in the game RCON.

//NOTE: Then press Shift + the ~ key to make the console command line larger.

//NOTE: Type: help for a list of RCON commands.
//NOTE: You can kick players and change maps and such.

// Server voice chat configuration ( 0 = "No Chat", 1 = "Free Chat", 2 = "Team Chat" (default)
seta sv_voice 2 //NOTE: So players can talk.

// Toggle voting for [player kick/map restart/next map] (0 = no vote or 1 = allow vote (1 is default)
seta g_allowVote 0 //NOTE: For people to be able to vote if admin is not present. //NOTE: Beware, you may get voted out or your own server if you allow.

// Toggle allowing dead players to chat with living players (0 = no chat (0 is default) or 1 = allow chat)
seta g_deadChat 0 //NOTE: For chatting.

// Time in seconds before the server will kick a user for inactivity (range 0 - 10000)
seta g_inactivity 0 //NOTE: I set to 0 so I can populate my server and not get kicked for being idle.

// Time in seconds for a player temporary ban (on kick/tempban) (range 0 - 3600)
seta sv_kickBanTime 3600 //NOTE: 3600 = 1 hour

// Toggle flood protection (throttling of user commands - should be enabled for non-password-protected Internet servers) (0 = allow or 1 = not allowed (1 is default)
seta sv_floodProtect 1 //NOTE: No server spam allowed.

map_name,mode_name,map_priority

mp_carbon,INF_default,1
mp_dome,INF_default,1

1. Access the in game multiplayer menu, select play, select Private Match, select Game Setup, select Mode. Here you can setup your .dsr however you like.
2. Once you have setup the .dsr to you likeing, select the save option and save it.
3. You will also need select the save recipe to disk option and manually enter a name and save it: Example: INF_default
4. .dsr file will be created in your admin folder. 

1. Make shorcut to dedicated server tool exe, right click-->Properties. 
2. In Shortcut tab in target box find: "C:\Program Files\Steam\steamapps\common\call of duty modern warfare 3\iw5mp_server.exe".
3. Add the following after the: \iw5mp_server.exe" +set dedicated 2 +set net_queryPort 27014 +set net_port 27015 +set sv_maprotation (put the name of your .dspl file here) +start_map_rotate

or 

1.Start iw5mp_server.exe
2.Write in textbox 
+set dedicated 2 +set net_queryPort 27014 +set net_port 27015 +set sv_maprotation (put the name of your .dspl file here) +start_map_rotate
3.Press enter.