Re: Client Access/400 communications through a proxy-based firewall

At 11:42 AM 8/15/97 -0500, you wrote:
>I'm looking for any and all input in regards to allowing secure access
>(via the Internet) to AS/400 resources behind a firewall (Eagle Raptor
>NT 4.0).  Specifically:
>
>- What ports (besides Telnet on port 23) should be opened up to allow
>full CA/400 (Win95 enhanced client) access?  In addition to display
>session, ODBC, file transfer, and shared folders access may be required.

Mitchell,

You can see the ports in use with the NETSTAT command, taking option 3, and
then F14. There are a number of server function with ports above 8470. Here
are some of the wellknown ports:

ftp               21 (this is the control channel-20 is for data)
telnet            23
smtp              25
bootps            67
tftp              69
www               80
pop3             110
snmp             161
lpd              515
wsg             5061

All this (I just discovered, following HELP from the 'Ports' column in
NETSTAT) can be seen by using the command WRKSRVTBLE. Here you can even
change these ports, 'tho I believe you have to be sure your clients append
":port#" to the URL.

Good luck, I'll be watching this thread with great interest!

Vernon Hamberg
System Software Programmer
Old Republic National Title Insurance Company
400 Second Avenue South
Minneapolis, MN 55401
(612) 371-1111 x480
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