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  3. January 2012

Re: Out of morbid curiosity (DNS address settings in CHGTCPDMN)

There's no legitimate security reasons for not configuring the DNS resolver (CHGTCPDMN). In every case I've seen, when it's not set, it's because of ignorance.

Setting this won't prevent "personal web surfing". Someone clever enough to set up a browser on IBM i (a non-trivial task) won't be stopped bypassing DNS settings. If you wan to block personal web surfing, it should be done with a firewall.


On 1/3/2012 12:01 PM, James Lampert wrote:
Is there any legitimate security -- or even "personal web-surfing
prevention" -- reason for *not* setting DNS address(es) in CHGTCPDMN?

We have a customer who wanted us to interface with a public web service,
for which a host table entry isn't enough (the service moves around),
and when I finally get something kind-of sort-of ready for alpha-test, I
find out that they have no DNS entries, and therefore can't reach the
service.

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