On Mon, 3 Aug 1998, Martin J. Maney wrote:
>
> On 3 Aug 1998, Jake Colman wrote:
> > Hmmm. I though that the diald FAQ says that you should NOT run named! I had
> > had a chaching name server set up (using the default caching name server RPM
> > included with RH 5.1) but removed it because of the FAQ. I am I
> > misremembering (is that a word?) something?
>
> The problem, as best I recall, is that with a caching server the initial
> request may try to establish a connection (TCP) rather than being a
> datagram (UDP) DNS request. This can cause problems especially with a
> link that has a dynamic IP address - that initial TCP session is doomed,
> since it has an incorrect source IP address. I believe there's a kernel
> hack that attempts to deal with this, but from what I've read it is less
> than perfect. As I think I said, I'm lucky enough to have a fixed IP
> address, so my knowledge of dealing with dynamic addresses is secondhand
> and theoretical.
My dynamic setup is working well.
I'm using Samba/diald/ipfw/dynamic IP/named/kernel 2.0.35 / 2 computer
network w/win95. If you would like an overview of my configuration, take
a peek at: http://www.people.virginia.edu/~drf5n/extras/linux_net
I leave bind/named up all the time, counter to the DNS-HOWTO, and haven't
used any ppp-up/down scripts.
I really like the dynamic kernel switch, although I don't have much
documentation on it. Try:
grep '' /proc/sys/net/ipv4/*
to see your kernel network settings, and
echo 1> /proc/sys/net/ipv4/ip_dynaddr
to turn on the dynamic address/packet re-writing. I mostly connect on the
first try.
Dave
>
> > In any case, what version of named or bind are you using? How do you have it
> > set up? Can you point me to a FAQ? My network is quite small. A Linux box
> > running Samba, diald, and with ability to connnect to ISP via PPP, and
> > several Win95 boxes. I use IP Masq to successfully masquerade the network
> > over PPP, and use Samba to publish Linux-based mounts and to access Win-based
> > mounts.
>
> That's very like the home/office network here. I'm using whichever
> version of bind shipped with Debian 1.3. There's a pretty good HOWTO for
> bind/DNS, but the syntax, especially for the very important reverse (IP to
> FQDN) tables is hard to get right. It's not so much inherently hairy, I
> think, as just consistently backwards: I didn't find it easy to keep
> things wrong-way-around. :-)
>
> > I'll look at this solution but I think that is already the case.
>
> One gotcha I've seen mentioned about hosts is that the first name really
> needs to be the fully-qualified name; aliases follow that. Aside from
> that and typos, no problem!
>
>
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.................................................................
Dave Forrest [EMAIL PROTECTED]
(804)-979-8634 http://watt.seas.virginia.edu/~drf5n
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