**** Also works with non-English characters ***
See MSN Messenger ports list

Screenshot of the Setup program showing Messenger choices

How to block MSN Messenger

*** Also blocks proxy sites *** See the BBC news item - Pupils 'bypassing school internet security'

- 28 day trial

TerminatorX v2 can block MSN Messenger and block Windows Live Messenger. It can also:

• block Yahoo Messenger
• block AIM Messenger
• block Web Messengers
• block chat and block QQ Messenger
• block file sharing (programs and music)
• block Facebook, block MySpace and block Bebo
• block gambling sites
• Block YouTube
• block proxy sites and anonymous surfing

- there are over 450 choices available for a school or company network.
 
Use TerminatorX in addition to your existing firewall for extra protection. TerminatorX runs invisibly. When someone uses a program or web sites thet you have banned, TerminatorX shuts it down.

You can find out who is trying to access banned web sites or programs, by running TerminatorX Monitor - free with TerminatorX - on a System Administrator's remote workstation:

Download Monitor now - free add-on to TerminatorX

TerminatorX v2 is selective - you can choose to allow MSN Messenger etc. to be used by some users (managers or teachers) but not others (employees or students).

Find out about school district licenses & Reduced prices available for 2 or more Site Licenses.

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Blocking MSN Messenger port numbers

 

According to Microsoft's web site: "When a session initiation protocol (SIP) solution is used, the data may be sent using TCP, UDP, or Secure Sockets Layer (SSL). SIP signaling can also use dynamic ports, which may require opening the entire range of ports on a firewall."

If users switch to web messengers remember that TerminatorX can block them If they use change to using proxy sites, then TerminatorX can stop them

 

From the same source, some of MSN Messenger ports are:

• Audio and Video - dynamic ports were chosen for the audio-video (AV) stream.... using dynamically allocated UDP ports in the range of 5004 to 65535.
• Application Sharing and Whiteboard - whiteboard (WB) data uses port 1503...
• File Transfer - Both incoming and outgoing TCP connections use the range of ports from 6891 to 6900...
• Remote Assistance - TCP port 3389 is used for the TCP connection for the Remote Assistance protocol.

 

Other sources

The MSN Messenger port numbers below are taken from (amongst others) PortForward.com and Experts Exchange discussions Q20968914 and Q20660861.

Unfortunately, trying to block MSN Messenger ports doesn't work because of the wide range of ports including port 80 that MSN Messenger uses:

• TCP port 80 (the 'http' standard web port - see also Web Messenger blocking)
• TCP port 1863
• TCP port 6901 (possibly)
• TCP ports 6891 to 6900.
• UDP on ports 1503, 3389, 5004-65535

Please note: attempting to block port 80 will stop normal web access.

If you do succeed in blocking MSN or Live messenger, users will just access MSN Web Messenger and other web messengers

Further information is available from this forum (in German and currently unavailable):

"Ports 6891-6900 enable File send,
Port 6901 is for voice communications. Allows Voice, PC to Phone, Messages, and Full File transfer capabilities.
IN TCP 6891 - 6900
IN TCP 1863
IN UDP 1863
IN UDP 5190
IN UDP 6901
IN TCP 6901"

Other information from www.cyberphaze.net (not currently online) gave:

Service: remote: 1963 and 1863   local: 1542 and 1493.
Audio: local: 13803, 1556, 11771
File transfer: remote: 6891   local: 1544
Messenger Update: remote: 80 local: 1457
Sign-In: remote: 443 local: 1484, 2400
Remote Desktop: local/remote: 389, 522, 1503, 1720, and 1731.

Additional information on blocking addresses and blocking ports to stop MSN messenger is given on the Serverfault web site. This indicates:

TCP - 1863,6891-6900,6901, UDP - 1863,5190,6901

and blocking:

msgr.hotmail.com
messenger.hotmail.com
gateway.messenger.hotmail.com
login.live.com

But the site indicates that there are side effects of blocking the URLs but did, however, indicate a workable solution.

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What applications can TerminatorX v2 block?

 

Just about any. The common ones you can choose from the list provided with TerminatorX (see below). Others, including future applications, that become a nuisance can be easily added. You can select any combination (one or more) of the following individual applications to block:
 

Messenger programs and web sites - time-wasting, distracting, security implications and viruses

aMSN ,AIM Express, Aim Triton, AOL Instant Messenger, APNI.NET Messenger, AreaMessenger, Baidu Hi, Clientless Conversations, Centova Web Messenger, Communication Tube, Cute Web Messenger, Dave's Messenger, Easy Messenger, eBuddy, eMeSeNe Messenger, eMessenger, Excite Messenger, Google Talk, Google Wave, Goowy, ILoveIM, IM2 Messenger, Imaginarlo, IMO.IM messenger, IMhaha Messenger, IMUnitive, Instan-t, Instan-t Express, Jabber, KoolIM, Mabber, Meebo, Meetro, Miranda, Mercury, Messenger Plus!, MSN Messenger, MessengerFX, MMClient, MSN Web Messenger, MSN2Go, MSNCP, MyEMessenger, MySpaceIM, PixaMSN, Pidgin, PongoMSN, PortalMes.com, Private Message Plus, RadiusIM, Regnessem, Qnext, QQ Messenger, Scooper's Messenger, SIM-IM, Snimmer ,Star Messenger, URMessenger, Windows Messenger, Yahoo! Messenger, Yahoo Web Messenger

Chat and video communication applications - time-wasting, distracting, security implications and viruses

All chat on Internet explorer, Almanak, AOL Chat rooms, Camfrog Video Chat, Chat House, Chatterbox, Easy IRC, Easy Message Express, Excite chat, Google Chats, Google Mail (Gmail) Chat, ICQ, ICQ.com, ICQ2go, ICUII, JWChat, Lycos chat, MICA, mIRC, MSN Chat, NetMeeting, Odigo, Paltalk, Talk City, Trillian, Visual IRC, Vypress chat, Worldvillage chat, XChat, Yahoo! Chat, Yak,

File sharing applications - possible illegal downloading (& prosecution), time-wasting, distracting, connection slowing, viruses and bandwidth consuming

Addax, ApexDC++, Arachnid, Ares, Azureus, BadBlue, BearFlix, BearShare, BitComet, BitSpirit, BitTorrent, BitZip, Blubster, Cabos, Cheetah, CitrixWire, Crapster, DC++, DexterWire, Direct Connect, eDonkey, eMule, File Miner, File Navigator, FileScope, File Seeker, FileShare, Filetopia, FlashGet, FreeWire, FrostWire, giFT, GLUZ, Gnotella, Gnucleus, Gnutella, GO MP3, Grokster, iMesh, KaZaA, KCeasy, Kiwi Alpha, LemonWire, LimeWire, Lphant, MLDonkey, Morpheus, MP3 Rocket, MP3 Torpedo, MP3DownloadCity.com, Mute, MyNapster, MyTunes, Napster, NeoNapster, Opera's DC++ (oDC), Overnet, PHEX, Piolet, Prune Baby, SababaDC, Shareaza, SharkTorrent, StarMule, SwapNut, Swapper, The Pirate Bay, Torrent Harvester, Torrent clients (general), Torrent Swapper, Tribler, TrustyFiles, URLBlaze, µTorrent, Warez P2P, WinMP3Locator, WinMX, xMule, XoloX, Yaga, Zultrax

Internet phones - time-wasting, distracting, connection slowing and bandwidth consuming

Advanced Call Center, iConnectHere, Net2Phone, PC-Telephone, RealTunnel, Skype, StanaPhone

Keylogging and Stealth - security implications - can obtain users passwords, bank account details etc.

General keyloggers and sites, Remote Password Stealer, General Spying and Stealth

Miscellaneous application and Windows components - security implications, and system corruption

Advanced Process Termination, America Online browser, Control panel, Daphne, Display Properties, DOS box, DOSBox games utility, Internet Explorer (Microsoft), Microsoft Spy++, Msconfig, Personalization (Vista), Process Explorer, Process Suspender, Process Viewer, Regedit, Registry Booster, Remote Havoc, Security Task Manager, System Restore, Sysinternals utilities, Task Manager, Time/Date (system clock), What's Running

Social Networks - security implications, and system corruption

43 Things, 8hands, Adultfriendfinder.com AsianAve, Badoo.com, Bahu.com, Bebo, Biip.no, BlackPlanet, Blink.dagbladet.no, Blockcatalog.com, Broadcaster, CafeMom, Capazoo, CarDomain, Care2, ClassMates, Couchsurfing.com, Cyworld, Dada, Deiligst.no, Digg (video sharing), Dontstayin.com, eCRUSH, efamilyties.com, eSPIN, Experienceproject.com, Facebook, Facebox, Faceparty, Flickr, Flirtomatic, Flixter (photo sharing), Fotki, Fotolog, FreeCycle, Friends Reunited, Friendster, Fubar.com, Gaia Online, Gather.com, Geni.com, Google Buzz, Grono.net, GuildCafe, Habbo, Hi5, Horseland, Hyves.net, iLike, Imeem, IRC-Galeria.net, iWiW, Jaiku.com, Last.fm, LiveJournal, LunarStorm, Meetup.com, Metawishlist.com, MiGente, Mixi.jp, Mocospace.com, Multiply, Muxlim.com, Mybloglog.com, MyLOL.net, MySpace, MyYearBook, Nasza-klassa-pl, Netlog, Nexopia, Orkut, OtherEgo.com, Passado, PeopleAgregator.com, PerfSpot, Photobucket (photo sharing), Piczo, Platial, Plaxo.com, Plurk, Pownce.com, ProfileFly, ProfileLinker, Realbuzz, RockYou (photo sharing), Skyrock and Skyblog, Slide (photo sharing), Sonico.com, SoundPedia, Stickam, StudiVZ, StumbleUpon, Tabber, Tagged, TagWorld, Tribe.net, Trombi.com, Tuenti, Twitter, Upcoming (Yahoo), V Kontakte, Viadeo.com, Vox.net, WAYN, Webjam, Windows Live Spaces, Xanga, Yahoo! 360, Zoolit, Zoosk

Proxy/Anonymous surfing - security implications, system corruption, bypassing school restrictions and viruses

General proxy sites (catchall) , General anonymous surfing (catchall), General tunneling sites (catchall), 3proxy, Browzar, Google Translator (cloaking), Hideipaddress, Hopster , HTTPort , IPbounce, Idzap, Loki Network Client, Lqlq, Slyuser, Surfscreened, Systran.co.uk (cloaking), Torify, Torpark, Windows Live Translator (cloaking)

Casinos and Gambling - time-wasting, illegal in some places and distracting

General casino sites, General gambling sites, General betting sites, Poker sites, Baccarat sites, Blackjack and Punto Banco, Keno and bingo, Lottery sites, scratch card sites

Auctions - time-wasting and distracting

General auction sites, Bidz, eBay, eBid, ePier, Half.com, QXL, uBid

Warez - illegal downloading (& prosecution), time-wasting, distracting, connection slowing, viruses and bandwidth consuming

General sites for Appz, Crackz, Serialz and Warez

Music players - time-wasting and distracting

FLV Player, MoodLogic Player, MusicMatch, RealOne Player, Sonique, Winamp, Windows Media Player

Web mail - time-wasting, distracting, security implications and viruses

Excite mail, Gmail, Hotmail, Lycos mail, Yahoo mail

Downloads - corrupting systems, illegal downloading (& prosecution), time-wasting, distracting, connection slowing, viruses and bandwidth consuming

iTunes, General downloads of software, BBC iPlayer, YouTube, TubeSucker, Google Video, Ogrish.com, MSN Video, MetaCafe , Crackle, General Streaming media (TV, Radio, Video, Movies), Orbit, Rhapsody, LiveLeak, Justin.tv , Ustream.tv

On-line games - time-wasting, distracting and viruses

General online games, Games.com, Halftimegames.com, Hotgames, ijji, Kidzworld, Miniclip.com, MouseBreaker, MSN Games, PlaySite Games, Pogo.com, PopCap, QuickSnooker, Shockwave, .swf games, Yahoo! Games

Games - time-wasting and distracting

Chess Titans, Hearts, Freecell, InkBall, Internet Backgammon, Internet Checkers, Internet Hearts, Internet Reversi, Mahjong Titans, Minesweeper, Pinball, Purble Place, Solitaire, Spider Solitaire

Sports News - time-wasting and distracting

General sports sites, BBC Sport, CBS SportsLine, EPSN.go.com, Fox Sports, Sky Sports, Sporting News, Sports Illustrated, Sportsnews.com, USA Today, Yahoo! Sports

Plus any others that you wish to add if you find that they are causing you a problem. Additions are easy to do for any programs or web sites not mentioned above - or that may be developed in the future.

Yes, you can ban any combination of the above applications. For example you could choose to block BitComet, MSN Messenger, ICQ, eBay, Casinos and iTunes.

TerminatorX can be used over Novell and NT server networks and also works with Windows workstations on a Unix network or Linux network. TerminatorX can be set up to work locally on portable computers and can be used on peer-to-peer network configurations that have no server.