Connect Lost, Timed Out

[joseff amador]

I'm posting this for a friend who is unable to connect to my server. All of our other friends are able to connect.

FTB infinity 1.11.2

He gets this message:
http://imgur.com/Q2MTzI8

He times out before he even loads into the game world. And in-game, on the chat log it says "_____ has left the game"

He's not getting any error messages, nor is his client missing any mods.
He's reinstalled FTB (clean) several times.
I've even sent him my own /config folder just to ensure that his config matches mine (which matches the server). Still no luck.
We've increased his RAM on FTB launcher.
We've updated Java to Java 8 Update 65 (64-bit). Still nothing.

We're at our wits end here. Any other ideas?

The message the server gives is no different than when any other player connects to the server:

Spoiler: server console log

• [14:54:21] [User Authenticator #2/INFO]:UUID of player (removed for privacy) is b3743b9c-293c-413b-99fd-4e4c40cbbf5d
• [14:54:21] [Netty IO #5/INFO] [FML]: Client protocol version 2
• [14:54:21] [Netty IO #5/INFO] [FML]: Client attempting to join with 190 mods : MineFactoryReloaded|[email protected],BuildCraft|[email protected],[email protected],ProjRed|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected] build 20,[email protected],ProjRed|[email protected],[email protected]_beta,[email protected],MineFactoryReloaded|[email protected],BuildCraft|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],MineFactoryReloaded|[email protected],WR-CBE|[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ThaumicTinkerer@unspecified,MineFactoryReloaded|[email protected],[email protected],BuildCraft|[email protected],[email protected],[email protected],[email protected],[email protected],MineFactoryReloaded|[email protected],MineFactoryReloaded|[email protected],ProjRed|[email protected],[email protected],[email protected],[email protected],[email protected],NEIAddons|[email protected],[email protected],[email protected] - 0.1 ALPHA,[email protected],[email protected],<CoFH ASM>@000,NEIAddons|[email protected],NEIAddons|[email protected],[email protected],[email protected],ProjRed|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ProjRed|[email protected],[email protected],[email protected],[email protected],[email protected],StevesFactoryManager@A93,appliedenergistics2-core@rv2-stable-10,[email protected],[email protected],inpure|[email protected],[email protected],BuildCraft|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],NEIAddons|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ProjRed|[email protected],journeymap@@JMVERSION@,appliedenergistics2@rv2-stable-10,thaumcraftneiplugin@@VERSION@,WR-CBE|[email protected],MineFactoryReloaded|[email protected],[email protected],MineFactoryReloaded|[email protected],MineFactoryReloaded|[email protected],[email protected]_3,WR-CBE|[email protected],[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected],[email protected],[email protected],BuildCraft|[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected],[email protected],[email protected],NEIAddons|[email protected],[email protected],[email protected],[email protected],[email protected],MineFactoryReloaded|[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected]_beta,BuildCraft|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],NEIAddons|[email protected],[email protected],MineFactoryReloaded|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],BuildCraft|[email protected],[email protected],[email protected],[email protected],[email protected],ProjRed|[email protected],[email protected],ProjRed|[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],BuildCraft|[email protected],[email protected],chiseltones@@VERSION@,MineFactoryReloaded|[email protected],[email protected]
• [14:54:21] [Netty IO #5/INFO] [FML]: Attempting connection with missing mods [act, JourneyMapServer] at CLIENT
• [14:54:42] [Server thread/INFO]removed) lost connection: TextComponent{text='Disconnected', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null}}
• [14:54:42] [Server thread/INFO]removed) left the game

 

[Kevin van Rijzewijk]

Looks more like some kind of firewall blocking him... Or something in that direction.
perhaps his router.. ports..