[Twisted-Python] speed on intranet?

[xlp223]

my office has some computers with intranet.
i installed twisted 1.0.4 on a computer
when i visited the computer with twisted 1.0.4 from another
computer,speed in intranet is slow.

but since i enter into the internet on a computer through gateway,
speed of visiting the computer with web server of twisted 1.0.4 in intranet is quick.

why?

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