Re: [FW1] Yahoo Messenger Problems

[Darren Van Booven]

Title: RE: [FW1] Yahoo Messenger Problems

By default the Yahoo client uses port 5050.  Users can get around this by specifying that the client uses port 80.  If you want to stop all users from using Yahoo, block everything using port 5050, as well as block any HTTP connection request to the Yahoo servers by blocking HTTP to the following destination IP nets (verified by ARIN):     216.136.224.0 - 216.136.227.255   That should do it!     Darren Van Booven Solution Architect Nortel Networks [EMAIL PROTECTED]   -----BEGIN PGP PUBLIC KEY BLOCK----- Version: PGP 7.0   mQGiBDqyB0gRBADleWuZWshdO4CgkQVW6XQK8dAkFWNk/FIZHPhC2ZuvVmri89NU s0/3gWXVUQg4GdLkHAG17pzigFSwUklT2oHruc4YiXsigXebDUN/7nKb9C7NbAXN 53Viw/bYEXCmA9a5dLVIoZO70FeT3S3ElN9VUInsvg/GgBO983pmzby2OQCg/0dU zIF9GlbVfjkXp2KV8f/MOt8EAJrazzRlNUOEex/WWui8LMxkwmfGhEim2hYKoFHt MMnyK82SPgl0/8vk08MixvYnbA0OdVcLdm80YjvWJAgDBXDjAfQrtMHKksujBgaq mlIgQt6PhUi9p8M8FGOvY9HjnKID2zPh/Zyyl3CotcaH8CmXDlvKaLvcu7Sb3Lmn V3KXA/9mADgyABWL2I6pZTIcLUR+K32fugGTnUWpEMLsv//MtIMiNnngS7voXIV3 iNmBGdvfysOwd5WV2iIKZMmEz+i90DbzZWH9QSKBTphiLYpXRoAt5z5XrYlh0XlE LR+ygC0Oke3tSjxFUcr68ld+rmZd42swrAFniGDLSVWfUNe4f7QxRGFycmVuIFZh biBCb292ZW4gPGR2YW5ib292ZW5Abm9ydGVsbmV0d29ya3MuY29tPohVBBARAgAV BQI6sgdIBQsDAgEKAhkBBRsDAAAAAAoJEJ0Cj6x1YKtKejgAniXXQxxC5g7cZxW2 u7GXDQuI8c+cAJsFEJ6+lf0BiMt1joAid7ZCiwZIhLkCDQQ6sgdIEAgA9kJXtwh/ CBdyorrWqULzBej5UxE5T7bxbrlLOCDaAadWoxTpj0BV89AHxstDqZSt90xkhkn4 DIO9ZekX1KHTUPj1WV/cdlJPPT2N286Z4VeSWc39uK50T8X8dryDxUcwYc58yWb/ Ffm7/ZFexwGq01uejaClcjrUGvC/RgBYK+X0iP1YTknbzSC0neSRBzZrM2w4DUUd D3yIsxx8Wy2O9vPJI8BD8KVbGI2Ou1WMuF040zT9fBdXQ6MdGGzeMyEstSr/POGx KUAYEY18hKcKctaGxAMZyAcpesqVDNmWn6vQClCbAkbTCD1mpF1Bn5x8vYlLIhkm uquiXsNV6TILOwACAgf/Z5ODci3q9/sPdbtVN8fQp2hxjM+umxCccgGxDjVrovmc u8vb5R1fmPC9iNM1BLp034qoU6jjPMAmyTPeY6eRgjP/YaBuNf3tLaE0Jf8BL7DW zxGPQMn9FYkuoPkGByJCwz4sxUgFKDGWaOqIh6RYz3jvl4OZrQkkpcheBGBSBK0Z +5y9UaiA2MANBdUov7cvRDks6nqDNuSuQ7MyHaddVA/0zVtb+i1sAcdrmILzK8zB ZYDP/fYCbSwd5wZu6Mq5BA0LkM3OJkQTrYcWMVQXZNnlcXpfJqapLmqMh98lE6FK IakuRWPa5uIq/zdaJvVEAwoVc/HQSHdtbY1bzlLk4ohMBBgRAgAMBQI6sgdIBRsM AAAAAAoJEJ0Cj6x1YKtKnugAoOYAjpF8qAMVGgSmiK9yGa25yHs7AJwOMuA/wy88 I/gPLqXx9pC4RfYRlA== =5eWm -----END PGP PUBLIC KEY BLOCK----- ----- Original Message ----- From: Harvey, Jon To: 'Aeon Hale' ; Mike Glassman - Admin ; fw-1-mailinglist Sent: Friday, September 21, 2001 7:30 PM Subject: RE: [FW1] Yahoo Messenger Problems Aeon, Thanks for the mail. I think my users are running it thru port 80, the HTTP port though. I sniffed all traffic and when my sniffed PC was running, it was only running thru port 80, unless I was overlooking something when I filtered other items out later? Jon -----Original Message----- From: Aeon Hale [mailto:[EMAIL PROTECTED]] Sent: Saturday, September 22, 2001 3:54 AM To: Mike Glassman - Admin; Harvey, Jon; [EMAIL PROTECTED] Subject: RE: [FW1] Yahoo Messenger Problems Block port 5010, this is yahoo messenger port.  No need to block yahoo sites, unless you dont want users to get to yahoo search page -----Original Message----- From: Mike Glassman - Admin [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 20, 2001 2:02 AM To: 'Harvey, Jon'; [EMAIL PROTECTED] Subject: RE: [FW1] Yahoo Messenger Problems Jon, Kill access to mail.yahoo.com, www.yahoo.com and any other yahoo sites you can think of. That will do it. Mike > -----Original Message----- > From: Harvey, Jon [SMTP:[EMAIL PROTECTED]] > Sent: � ������ 19 2001 3:49 > To:   [EMAIL PROTECTED] > Subject:      [FW1] Yahoo Messenger Problems > > > To all, > > I need to know how to kill Yahoo Messenger in our office. We do not want > it > running anymore and need to remove it via firewall means. > > Thanks > Jon > [EMAIL PROTECTED] > > > ======================================================================== == > ====== >      To unsubscribe from this mailing list, please see the instructions at >                http://www.checkpoint.com/services/mailing.html > ======================================================================== == > ====== ======================================================================== ========      To unsubscribe from this mailing list, please see the instructions at                http://www.checkpoint.com/services/mailing.html ======================================================================== ======== ================================================================================      To unsubscribe from this mailing list, please see the instructions at                http://www.checkpoint.com/services/mailing.html ================================================================================