Security Incidents mailing list archives

Remote Access Software (Wireless Devices)


From: "Holstein, Michael" <mholstein () doit state in us>
Date: Tue, 25 Feb 2003 13:00:00 -0500

As many of you are aware, several vendors (notably SprintPCS) make software available that permits access to corporate 
email and files from a wireless device.

It does this by connecting via SSL to an external server, then keeping the connection open with keepalives. This is a 
novel way to defeat a corporate firewall (a tactic also used by other security "holes" like GoToMyPC).

Understandably this is NOT a "cool idea" from a network security perspective, and I would very much like to block all 
of it.

Vendors are no help in this matter -- I have installed the SprintPCS software and sniffed the connection, identifying 
"bpce.sprintpcs.com" as the server. Has anyone else done this for the other vendors?

I would like to compile a list of destination names/addresses for each vendor so those who choose to close the holes 
for their network may do so with minimal effort.

Any contributions would be appreciated.

MH>

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