Re: Firewall configurations for using DNS java as a lookup client

[Vaibhav B. <vai...@vi...>]

hi Brian --

That helps and answers my questions. I was wondering if the client would
require any firewall work.

Thanks much.

regards,
Vaibhav



On Tue, Feb 19, 2013 at 10:59 AM, Brian Wellington <bwe...@xb...>wrote:

>
> On Feb 17, 2013, at 4:47 PM, Vaibhav Bhandari <vai...@vi...>
> wrote:
>
> > Sorry for a repeated questions.
> >
> > Are there any best practices for how to configure firewalls to support
> DNS java as a lookup client (its just try to issue some DNS queries from
> Java primarily using TCP).
> >
> > Would just opening the port 53 be sufficient?
>
> I'm not sure that I understand the question.  Generally "opening port 53"
> would refer to allowing packets to come into port 53, which is certainly
> not required for a DNS client.  dnsjava's client will use a random port and
> connect outbound to port 53 for both UDP and TCP.  This usually doesn't
> require any firewall configuration.
>
> Brian
>
>


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