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RE: Outgoing Port

To all:

Adding the DNS servers to the CHGTCPDMN screen did the trick in allowing the
HTTPAPI to communicate with the outside world.

Thanks everyone for your input! 

Shannon O'Donnell

 

-----Original Message-----
From: ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx
[mailto:ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Scott Klement
Sent: Saturday, July 14, 2007 11:27 PM
To: HTTPAPI and FTPAPI Projects
Subject: Re: Outgoing Port

Hi Shannon,

> Changing the DNS server value with CHGTCPDMN will not affect 
> connectivity for anyone will it?

That really depends on a lot of factors.   It won't disconnect a TCP 
connection that's currently active.  However, you run a risk that a UDP
conversation might get disrupted, depending on the timing.

And, if domain lookups are essential for establishing outgoing connections
(which they would be, unless the connections are all to hosts in the hosts
table, or unless they're made by IP address) then you may disable the
ability to create new connections while you're making the change.

Worse, if there's a problem with the new configuration.  (I.e. the new DNS
server doesn't work well, or is missing some necessary local hosts,
etc) you could break the ability to establish new connections until the
error is discovered and fixed.

With what's at stake, I'd consider testing it during off hours, or at least
on a test box before changing the production box.

The most dangerous bugs are always the ones you don't think of.
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