Craig Musgrove
Guest
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 Posted:
Thu Jan 27, 2005 6:03 am Post subject:
Exchange, Outlook and Firewall |
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Exchange 2003, outlook 98.
Local clients connect with no issue,
I have had internet clients connecting via exchange connector thru the
firewall at thie location before with no issue, until code red came out...
and due to an unqualifed admin and/or a patch issued by microsoft, this has
stopped working.
Ports open on the firewall: 25,80,110,135,143,593 and opened range 1024 to
1800 based on something I read.
The exchange client "sometimes" connects to check the username with 10
second pause, othertime it reports connection or network error.
I have statically set the tcpip ports for exchange as well based on some
articles posted by microsoft, saw no improvement and removed them.
I am 5 hours into this...what have missed to get this to work?
Craig Musgrove
MCSE, MCP+I, MCP
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Lanwench [MVP - Exchange]
Guest
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| Posted:
Thu Jan 27, 2005 8:00 am Post subject:
Re: Exchange, Outlook and Firewall |
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Craig Musgrove wrote:
| Quote: | Exchange 2003, outlook 98.
Local clients connect with no issue,
I have had internet clients connecting via exchange connector thru the
firewall at thie location before with no issue, until code red came
out... and due to an unqualifed admin and/or a patch issued by
microsoft, this has stopped working.
Ports open on the firewall: 25,80,110,135,143,593 and opened range
1024 to 1800 based on something I read.
The exchange client "sometimes" connects to check the username with 10
second pause, othertime it reports connection or network error.
I have statically set the tcpip ports for exchange as well based on
some articles posted by microsoft, saw no improvement and removed
them.
I am 5 hours into this...what have missed to get this to work?
Craig Musgrove
MCSE, MCP+I, MCP
|
Oh my - you really are asking for trouble. You should close nearly all those
ports. You should have the following open, if needed:
TCP 25, for inbound SMTP
TCP 443, for OWA via SSL/HTTPS (don't open 80)
TCP 110, if external access to your server via POP is needed
If you have external clients who need to connect directly to the Exchange
mailbox, not via POP/IMAP or OWA, you should implement VPN. |
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