HOW TO BLOCK YAHOO MESSENGER?

[vrad03]

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any one naa idea how to block yahoo messenger? i have a domain server configuration.

[MisterSuave]

unsaon man pag block bro? kanang dili ma download or dili ma run? or dili ma install?

[EarlZ]

If you want it blocked sa PC mismo
goto the windows admin panel and theres an option to block spefic programs from running, just add yahoomessenger.exe or any other specific .exe you need to block

[vrad03]

If you want it blocked sa PC mismo
goto the windows admin panel and theres an option to block spefic programs from running, just add yahoomessenger.exe or any other specific .exe you need to block

unsa mani admin panel? is it control panel? or administrative tools? thanx bro

[cooldude75ph]

any one naa idea how to block yahoo messenger? i have a domain server configuration.

I don't know if makatabang ni nimo but http://www.plevna.f9.co.uk/blockyahoomessenger.htm

According to Yahoo's website:

"Yahoo! Messenger will automatically search the firewall for an open port, and, if it finds one, use that to connect".

The order in which Yahoo Messenger scans for available ports is:

1. port 5050
2. port 80
3. All available ports

This means that blocking Yahoo Messenger by blocking ports will not work. Yahoo Messenger will only switch ports and use a different one.

Even if you were able to block Yahoo Messenger by this method, your employees or students would just change to Yahoo Web Messenger - which is accessed as a web page in Internet Explorer or other browsers using port 80.

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

Yahoo! Messenger
Service: remote: port 5050, 5150, and 8000 local: 5101 and 1638
Audio: remote: 5001 local: 1644 and 5000
File transfer: remote: 1614 local: 80/81/82
Webcam: remote: 80 local: 1677

Y!Tunnel
Service: remote: 1455, 5050, 1071, and 1074 local: 8000, 8001, and 1073

Consider sad nga daghan na kaayong web-based multi-protocol IMs which have YM as part of their list of offered protocols. Also daghan nasad nakahibalo nga it's as simple as making a copy of yahoomessenger.exe and then renaming this to, say, ym2.exe para ma-bypass ang kasagaran sa mga list based blocking programs.

[vrad03]

@cooldude75ph
fyter sad na imu g suggest na site bai, kaso trial version man sad, experiment lang ni nko ug block, tsk tsk, murag lisud jud mag block ani, anyone? naapa mo lain idea, salamat au bro...

[cooldude75ph]

@cooldude75ph
fyter sad na imu g suggest na site bai, kaso trial version man sad, experiment lang ni nko ug block, tsk tsk, murag lisud jud mag block ani, anyone? naapa mo lain idea, salamat au bro...

lisod na gyud kaayo iblock especially if meebo ang gamiton or other web-based nga I.M. Naa gani toy nangita sa una sa istorya nga alternative to YM kay gi-block sa admin nila ang YM protocol, naka-lusot ra man gihapon tungod kay gamit siya og meebo og uban pa nga web-based IMs.

[sleepydeepeyed]

From CERT:

http://www.cert.org/advisories/CA-2002-16.html

Yahoo! Messenger typically listens for peer-to-peer requests on port 5101/TCP and client-to-server communications on 5050/TCP, but is not limited to these ports. Users can attempt to implement a firewall to block inbound and outbound access to port 5101/TCP, 5050/TCP, or any other port(s) that Yahoo! Messenger chooses to bind a service. However, the Yahoo! Messenger client will attempt to connect to the server through ports 20, 21, 25, 37, 80, and 119 if 5050 is blocked, therefore this may not be a viable nor practical solution for most sites.

[pedro_iho]

mga bro.... jud ko kay g try nako tana sa akong dlink na frewall router d man jud... halos tana nmort ug mga domain na g suggest sa net d man ma block.. makalusot mna japon... murag tama jud na makalusot even block ang inbound traffice sa Ym.. ang problem s sa client kay mo sulod sa port 80 mangita lain... tsk tsk...

[Tamblot]

its either you block it by port or by ip address. if you have a content/URL filtering in your firewall then you wont find this hard to perform. In my case, i did an IP range block.