hi everybody, at first I'm sorry for my bad english because I'm italian.

now my problem, I've tried to start a dedicated server looking at this tutorial viewtopic.php?f=30&t=9927 and the server starts (you can see here)

Welcome to IW5M r17.
http://fourdeltaone.net/ for help and support 
Connecting to online services....
Connected to online services.
Executing server config "server.cfg"
Succeeded reading from default.dspl
Loaded 1 map entries
Loading DSR "TDM_default.dsr"...
Loading Succeeded for DSR "TDM_default.dsr"
-----------------------------------
Spawning map: mp_mogadishu, gametype war
Initializing Steam Game Server: game port 27017, auth port 8766, query port 27018, gamedir modernwarfare3, version 1.0.0.0
Steam Game Server initialized as Internet Server.
Steam Master Servers found (1). Server will be Internet Server listed.
[scriptLoader] Loading script GameLog
Spawn map (mp_mogadishu, war) complete.
-----------------------------------

but nobody can see it in internet tab... i've tried in lan tab too and nothing... how can I resolve this problem? must I study english ?

Have you port forwarded on your router????????

 

If it is not visible to others then you have not forwarded port, enter your router and add port range that you are using. Most look like this IW5(name) 27010 to 27030 (start/end range) 27010 to 27030(trigger/range) 192.168.1.(your pc) Varies from router brand on how it is setup.

 

To check if your port is open goto portforward.com and use there checker program.