I can join my minecraft forge modded server but my friends cant.

[19:33:56] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: zeon lost connection: Timed out
[19:33:56] [Server thread/INFO] [minecraft/DedicatedServer]: zeon left the game
[19:34:01] [Netty Server IO #4/ERROR] [FML]: NetworkDispatcher exception
io.netty.handler.timeout.ReadTimeoutException: null
[19:34:01] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Seader lost connection: Timed out
[19:34:01] [Server thread/INFO] [minecraft/DedicatedServer]: Seader left the game
[19:34:18] [Netty Server IO #5/INFO] [FML]: Client protocol version 2
[19:34:18] [Netty Server IO #5/INFO] [FML]: Client attempting to join with 85 mods : [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],[email protected],[email protected],appliedenergistics2@rv6-stable-4,[email protected],[email protected],[email protected],[email protected],[email protected],[email protected]+release.109.220f184,[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],[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],[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]
[19:34:19] [Netty Server IO #5/INFO] [CodeChickenLib-ConfigSync]: Skipping config sync, No mods have registered a syncable config.
[19:34:49] [Netty Server IO #5/ERROR] [FML]: NetworkDispatcher exception
io.netty.handler.timeout.ReadTimeoutException: null
[19:34:49] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Seader lost connection: Timed out
[19:34:49] [Server thread/INFO] [minecraft/DedicatedServer]: Seader left the game
[19:35:15] [Thread-24/WARN] [THAUMCRAFT]: AURAS TAKING 448 ms LONGER THAN NORMAL IN DIM 0
[19:35:22] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 7186ms behind, skipping 143 tick(s)
[19:35:34] [Netty Server IO #6/INFO] [FML]: Client protocol version 2
[19:35:34] [Netty Server IO #6/INFO] [FML]: Client attempting to join with 85 mods : [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],[email protected],[email protected],appliedenergistics2@rv6-stable-4,[email protected],[email protected],[email protected],[email protected],[email protected],[email protected]+release.109.220f184,[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],[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],[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]
[19:35:35] [Netty Server IO #6/INFO] [CodeChickenLib-ConfigSync]: Skipping config sync, No mods have registered a syncable config.
[19:35:51] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2059ms behind, skipping 41 tick(s)
[19:36:06] [Netty Server IO #6/ERROR] [FML]: NetworkDispatcher exception
io.netty.handler.timeout.ReadTimeoutException: null
[19:36:06] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Seader lost connection: Timed out
[19:36:06] [Server thread/INFO] [minecraft/DedicatedServer]: Seader left the game
[19:36:13] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 6552ms behind, skipping 131 tick(s)
[19:36:37] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2698ms behind, skipping 53 tick(s)
[19:37:01] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 3333ms behind, skipping 66 tick(s)
[19:37:21] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2032ms behind, skipping 40 tick(s)
[19:37:47] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2744ms behind, skipping 54 tick(s)
[19:39:05] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 3267ms behind, skipping 65 tick(s)
[19:40:48] [Netty Server IO #8/INFO] [FML]: Client protocol version 2
[19:40:48] [Netty Server IO #8/INFO] [FML]: Client attempting to join with 85 mods : [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],[email protected],[email protected],appliedenergistics2@rv6-stable-4,[email protected],[email protected],[email protected],[email protected],[email protected],[email protected]+release.109.220f184,[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],[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],[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]
[19:40:49] [Netty Server IO #8/INFO] [CodeChickenLib-ConfigSync]: Skipping config sync, No mods have registered a syncable config.
[19:41:19] [Netty Server IO #8/ERROR] [FML]: NetworkDispatcher exception
io.netty.handler.timeout.ReadTimeoutException: null
[19:41:20] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Seader lost connection: Timed out
[19:41:20] [Server thread/INFO] [minecraft/DedicatedServer]: Seader left the game
[19:44:19] [Netty Server IO #10/INFO] [FML]: Client protocol version 2
[19:44:19] [Netty Server IO #10/INFO] [FML]: Client attempting to join with 85 mods : [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],[email protected],[email protected],appliedenergistics2@rv6-stable-4,[email protected],[email protected],[email protected],[email protected],[email protected],[email protected]+release.109.220f184,[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],[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],[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]
[19:44:20] [Netty Server IO #10/INFO] [CodeChickenLib-ConfigSync]: Skipping config sync, No mods have registered a syncable config.
[19:44:34] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Nanoorb lost connection: You logged in from another location
[19:44:34] [Server thread/INFO] [minecraft/DedicatedServer]: Nanoorb left the game
[19:44:34] [Netty Server IO #12/INFO] [FML]: Client protocol version 2
[19:44:34] [Netty Server IO #12/INFO] [FML]: Client attempting to join with 85 mods : [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],[email protected],[email protected],appliedenergistics2@rv6-stable-4,[email protected],[email protected],[email protected],[email protected],[email protected],[email protected]+release.109.220f184,[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],[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],[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]
[19:44:34] [Netty Server IO #12/INFO] [CodeChickenLib-ConfigSync]: Skipping config sync, No mods have registered a syncable config.
[19:44:42] [Server thread/INFO] [FML]: [Server thread] Server side modded connection established
[19:44:42] [Server thread/INFO] [minecraft/PlayerList]: Nanoorb[/25.14.156.70:6421] logged in with entity id 20315 at (-64.0077747096848, 69.5625, 41.2204889802119)
[19:44:42] [Server thread/INFO] [minecraft/DedicatedServer]: Nanoorb joined the game
[19:44:42] [Server thread/INFO] [Waila]: Player EntityPlayerMP['Nanoorb'/20315, l='world', x=-64.01, y=69.56, z=41.22] connected. Sending ping
[19:44:42] [Server thread/INFO] [Actually Additions]: Sending Player Data to player Nanoorb with UUID 21567df1-dd52-3d2f-bee1-5545d52fc9be.
[19:44:42] [Server thread/INFO] [Mekanism]: Sent config to 'Nanoorb.'
[19:44:47] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2226ms behind, skipping 44 tick(s)
[19:44:50] [Netty Server IO #10/ERROR] [FML]: NetworkDispatcher exception
io.netty.handler.timeout.ReadTimeoutException: null
[19:44:50] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: zeon lost connection: Timed out
[19:44:50] [Server thread/INFO] [minecraft/DedicatedServer]: zeon left the game

SAME HERE