Re: Outgoing Port

[Scott Klement <sk@xxxxxxxxxxxxxxxx>]

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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