CSS dedicated server : PROBLEME CONNEXION

Bonjour, j'ai créé un serveur dédié de counterstrike : source, mais je suis le seul à etre capable de se connecter dessu, il n'apparait pas chez mes amis,
JE N'UTILISE PAS LE ROUTEUR donc ce n'est pas un probleme de port forwarding.
voici le contenu de mon fichier server.cfg:

// server name
hostname "HezForce"

// rcon passsword
rcon_password "amatwer"

// server cvars
mp_friendlyfire 0
mp_footsteps 1
mp_autoteambalance 1
mp_autokick 0
mp_flashlight 0
mp_tkpunish 1
mp_forcecamera 0
sv_alltalk 0
sv_pausable 0
sv_cheats 0
sv_consistency 1
sv_allowupload 1
sv_allowdownload 1
sv_maxspeed 320
mp_limitteams 2
mp_hostagepenalty 5
sv_voiceenable 1
mp_allowspectators 1
mp_timelimit 25
mp_chattime 10
sv_timeout 65

// bots
bot_quota 0
bot_quota_mode fill
bot_difficulty 2
bot_chatter off
bot_auto_follow 1
bot_auto_vacate 1
bot_join_after_player 0
bot_defer_to_human 1
bot_allow_rogues 0
bot_walk 0
bot_join_team any
bot_eco_limit 2000
bot_allow_grenades 1
bot_all_weapons
bot_allow_grenades 1
bot_allow_pistols 1
bot_allow_sub_machine_guns 1
bot_allow_shotguns 1
bot_allow_rifles 1
bot_allow_snipers 1
bot_allow_machine_guns

// round specific cvars
mp_freezetime 6
mp_roundtime 5
mp_startmoney 800
mp_c4timer 45
mp_fraglimit 0
mp_maxrounds 0
mp_winlimit 0
mp_playerid 0
mp_spawnprotectiontime 5

// bandwidth rates/settings
sv_minrate 0
sv_maxrate 0
decalfrequency 10
sv_maxupdaterate 60
sv_minupdaterate 10

// server logging
log off
sv_logbans 0
sv_logecho 1
sv_logfile 1
sv_log_onefile 0

// operation
net_start
sv_lan 0
sv_region 0

// execute ban files
exec banned_user.cfg
exec banned_ip.cfg