mssharpe
stranger
Posts: 1
Reg: Tuesday December 21st 2004
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 Tuesday December 21st 2004 11:45 PM - Post#71721
Is there anyway to block Yahoo messenger on a home computer? I have XP home edition. Please be gentle as I am in no way technologically advanced.
Thanks,
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 Lanwizard
Mostly Harmless
Posts: 7577
Age: 46
Loc: Tucson, AZ.
Reg: Saturday June 29th 2002
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Wednesday December 22nd 2004 12:53 AM - Post#71722
In response to mssharpe
Hello mssharpe! Welcome to the forum! Yahoo has a page on how to open up ports so their program will work.
http://help.yahoo.com/help/us/mesg/use/use-17.html
1. 5050
2. 80
3. All available
Those are the ports you need to block on your firewall. Unfortunately, the Yahoo messenger program also uses port 80 which just happens to be the port that is used by web browsers. If you close port 80, you won't be able to surf the web. If the messenger program can't use 5050 or 80, it'll scan until it can find any open port.
So, the bottom line is that you can't stop Yahoo messenger from contacting the Internet.
Somebody told me to go to Hell, I replied back that I can't. He asked me why and I said that the Devil has taken out a restraining order against me.
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 Dalantech
Jedi Web Master
Posts: 11743
Age: 45
Loc: Naples, Italy
Reg: Saturday October 8th 2005
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Wednesday December 22nd 2004 05:37 AM - Post#71724
In response to Lanwizard
...amd it's a big problem for sysadmins that want to block Yahoo Messenger and Real Audio (RA can also use port 80). There are some commercial firewalls that will alolow you to block domains, but I don't think any home product has the ability to do it... 
My Photo Gallery -if you see an image you like just order it.
No Cropping Zone -macro photography explained.
Will Electronic Arts release a version of Spore for creationists that only has one level that's already finished?  |
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cantloginin
Member
Posts: 4532
Loc: Escondido,CA
Reg: Saturday February 3rd 2001
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Wednesday December 22nd 2004 10:41 AM - Post#71732
In response to Dalantech
You I think with some hardware home routers you can deny application trigger usage. I don't know how well it works but basically it would look at the application layer and deny it that way.
I could have sworn Zonealarm did this but personally getting ZA to work with a more than a handfull or users is a PITA.
I have done it on a testbed just to see if it could be done when ZA was in the 2.5 stage ..god knows what stage its at now..but this is so computer resource intensive.
There might be a FreeBSD SPI firewall that you could tinkering if trying to get it to do what you want.
"Oh, he's not a bigot. He's just not PC.". -Dal
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Jizzler
Newbie
Posts: 627
Age: 29
Loc: Orlando, FL
Reg: Friday August 9th 2002
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Wednesday December 22nd 2004 11:50 AM - Post#71737
In response to Lanwizard
Quote:
1. 5050
2. 80
3. All available
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d_jabsd
The Daemon
Posts: 875
Age: 36
Loc: lake in the hills, il
Reg: Friday July 12th 2002
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Wednesday December 22nd 2004 12:09 PM - Post#71742
In response to mssharpe
The easiest way to do this would be to figure out the exact servers needed for yahoo messanger and create host entries in your HOSTS file that point to 127.0.0.1.
| XML is like violence. If it doesn't solve the problem, just add more. |
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Lanwizard
Mostly Harmless
Posts: 7577
Age: 46
Loc: Tucson, AZ.
Reg: Saturday June 29th 2002
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Wednesday December 22nd 2004 03:00 PM - Post#71755
In response to d_jabsd
That's a very good idea, those server names are:
cs1.yahoo.com, cs2.yahoo.com, and cs3.yahoo.com
Somebody told me to go to Hell, I replied back that I can't. He asked me why and I said that the Devil has taken out a restraining order against me.
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WISPguy
Da WiFi Guy
Posts: 1393
Age: 36
Loc: Kansas, USA
Reg: Tuesday September 21st 2004
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Wednesday December 22nd 2004 03:06 PM - Post#71756
In response to cantloginin
I am using ZA 5.5 and it can block apps. Everytime an app like Y! tries to access the Internet for the first time, I get a message asking if I want to allow or block the app.
"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."
- Albert Einstein 
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cantloginin
Member
Posts: 4532
Loc: Escondido,CA
Reg: Saturday February 3rd 2001
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Wednesday December 22nd 2004 05:59 PM - Post#71763
In response to WISPguy
Have you tried it with with one PC being the router as such? Just curious on the type of performance hits.
"Oh, he's not a bigot. He's just not PC.". -Dal
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WISPguy
Da WiFi Guy
Posts: 1393
Age: 36
Loc: Kansas, USA
Reg: Tuesday September 21st 2004
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Thursday December 23rd 2004 03:32 PM - Post#71800
In response to cantloginin
The free version of ZA (which is what I am running) doesn't allow routing or connection sharing.
"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."
- Albert Einstein
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