I won't harp on this again... I promise. There seems to be a lot of
confusion about this and it can have bad consequences if the wrong
assumptions are made.

Thurman, you're right a T1 is a hardwired (maybe) connection between two
locations. The network topology that you describe is secure because of the
topology not because it is a T1. The T1 is just a time domain digitally
multiplexed carrier of 24 64kb/sec DSOs. These DSOs can be agregated for a
full 1.54 Mb connection or can be sub-agregated (fractional). They can carry
voice and/or data.

Let me describe a T1 that is NOT secure. It is the one in my office. I have
a T1 connection, the other end of which in located in the offices of a ISP
that belongs to some friends. The have an OC3 (45Mb/sec) connection that I
get to put my mail server on. This T1 is private in the sense that it
carries only what I put on it, but it is NOT secure because it IS part of
the public packet switched network we call the Internet.

I would not assume that because you have a T1 that it is secure and that
firewalls are note required. Not to plug my own profession too much, but it
is a good idea to have a network engineer look at your WAN design before you
run medical data on it.
Thurman's T1, as he describes it, is secure because they are bringing the
internet into the network through another channel, and his T1 is already
behind a firewall.

Best regards,

Donald R. Donigan
donigan technology, LLC dba
Desert CODE Works
[EMAIL PROTECTED]
[EMAIL PROTECTED]



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