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FTP and www on NT 4.0


FTP and www on NT 4.0 Yosemite Sam
9/30/2004 12:51:30 AM
iis ftp:
If I shut down almost everything else is NT 4.0 (fully patched) secure
enough to run FTP and www on one box that has no other job function.
I have it in a DMZ with firewall on each side. I can access it from inside
net via FTP if that is necessary to maintain security
I thought about blocking all but:
80 udp
80 tcp
21 tcp
21 udp
on the adapter advanced properties.
On adapter advanced propertis there is a udp ports tcp ports and protocols
list with allow/deny for each, and protocols expects an interger between 0-9
I think it was.

Q: What values in protocols should be allowed or blocked. Default on NT4.0
is of course allow all.

Q: Should I leave more ports open for FTP passive mode?

Q: If so what ports?

Q: What ports need to be open if I wanted to use explorer from another
machine to access the server from inside the DMZ to post files to be
downloaded, if that isn't too risky.

TIA

Sam

Re: FTP and www on NT 4.0 Bernard
9/30/2004 1:44:32 PM
These are the ports required in relate to IIS, if the service is installed,
you can skip it.
INFO: Inetinfo Services Use Additional Ports Beyond Well-Known Ports
http://support.microsoft.com/?id=327859

You need tcp for http and ftp.
As for your question.

1) refer the above kb
2) the range is between 1024 - 5000. read
Information About the IIS File Transmission Protocol (FTP) Service
http://support.microsoft.com/?id=283679
but it can go higher if client uses higher ephemeral port
3) refer 2)
4) Bad idea, as this required netbios session and rpc is needed.

--
Regards,
Bernard Cheah
http://www.tryiis.com/
http://support.microsoft.com/
http://www.msmvps.com/bernard/



[quoted text, click to view]

Re: FTP and www on NT 4.0 jeff.nospam NO[at]SPAM zina.com
9/30/2004 1:51:14 PM
On Thu, 30 Sep 2004 00:51:30 -0400, "Yosemite Sam"
[quoted text, click to view]

Why don't you handle this in your firewall rules?

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