Well I've never used any of these DNS services, but it looks like they do allow for your own domain name: http://www.dyndns.org/mydyndns/custom/features.php
As far as updating SuperReal, you might want to take a look at this article about nsupdate: http://www.linux-mag.com/2001-11/bind9_06.html Regards, Wade. On Tue, 2003-01-14 at 13:57, Shawn Grover wrote: > Thanks a bunch. I'll be looking at this in detail later tonight. > > The fellow at SuperReal told me that with W2K, the DNS setup there can > "register itself" with a parent DNS server. This sounds like a sub-zone to > me, but he says it's a different process. There should be an equivalent way > to do this with Linux. Is this what DynDNS does? I understood DynDNS to be > a free DNS hosting for people with dynamic IPs (names like > mydomain.dyndns.com). Whereas I have my own registered name. Hope that's > clear... > > Thanks for the help Wade! > > Shawn > > -----Original Message----- > From: Wade Dyck [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 14, 2003 1:36 PM > To: [EMAIL PROTECTED] > Subject: Re: (clug-talk) Need help with IPTables / router configuration > > > Hi Shawn, the following lines added to your firewall script should give > you the NATing that you need. $EXTIP will get you the current IP, but > the script would have to be re-run on an IP change. > > I don't know how superreal.com works, but I imagine there was some kind > of client on the w2k box that would update them on an IP change. You'll > need that client on the linux box. If they don't have a linux client, > you might want to check out http://clients.dyndns.org/unix.php or other > similar services. > > IPTABLES="/path/to/iptables" > EXT="eth0" > INT="eth1" > EXTIP=`ifconfig $EXT | grep inet | cut -d : -f 2 | cut -d \ -f 1` > INTIP="192.168.0.1" > SRVIP="192.168.0.15" > INTNET="192.168.0.0/24" > > #Other variables and main firewall entries go here > > ######### > #SNAT > ######### > > #Outbound connection get the external IP as their source > $IPTABLES -t nat -A POSTROUTING -s $INTNET -o $EXT -j SNAT --to $EXTIP > > #if an internal to external IP request, snat to firewall's internal IP > $IPTABLES -t nat -A POSTROUTING -s $INTNET -o $INT -d $SRVIP -j SNAT > --to $INTIP > > > ######### > #DNAT > ######### > > #if an internal to external IP request, dnat to server's IP > $IPTABLES -t nat -A PREROUTING -s $INTNET -i $INT -d $EXTIP -j DNAT --to > $SRVIP > > #dnat outside incoming connection for web, smtp, and ftp > $IPTABLES -t nat -A PREROUTING -p tcp --dport 80 -i $EXT -j DNAT --to > $SRVIP > $IPTABLES -t nat -A PREROUTING -p tcp --dport 25 -i $EXT -j DNAT --to > $SRVIP > $IPTABLES -t nat -A PREROUTING -p tcp --dport 21 -i $EXT -j DNAT --to > $SRVIP > > > The only tricky thing is allowing your workstation to access the server > through it's domain name. Internal connections to the external IP are > first DNATed to the server's internal IP. Then SNATed to the firewall's > internal IP. This forces the return packets to go through the firewall > instead of directly to the workstation. > > Lots of docs here: http://www.netfilter.org/documentation/ > > > Hope that helps, > > Wade. > > > On Tue, 2003-01-14 at 10:48, Shawn Grover wrote: > > I've recently installed Red Hat 8 as a server/router. I've successfully > > configured IPTables to do NAT for my internal network. But now I also need > > to allow users to request pages from my web server. > > > > My setup: 1 Win2K server (web/email), 1 W2K workstation, and 1 Linux > server > > (two NICs). > > I need to allow web/email/ftp access to my server (ip 192.168.0.15), and > be > > able to browse the Internet from both internal computers. My workstation > > should be able to see the server through it's domain name. > > > > I suspect I'm going to need SNAT instead of Masquerading, but need some > > guidance. > > > > As an added bonus/difficulty, my DNS is dynamic. I do DNS hosting through > > superreal.com, and they dynamically detect my IP address and modify the > > appropriate A record. When I was using RRAS on the W2K server (using my > > server as my router), this was working fine. As soon as I introduced the > > Linux router (because it's more stable, and less troublesome in terms of > > browsing the web), I lost my DNS setup. Any tips on how to configure > this? > > > > Oh, I should mention that the RH box doesn't have X Windows installed. > All > > configuration is done at the command line. (using VIM to create scripts). > > > > My research hasn't turned up anything very clear on how to do either the > > server hosting and NAT, or on the DNS issue (haven't looked into this one > > tooooo much yet...). I did look at IPCop and Smoothwall - they sound like > > they'll do what I need, but they refuse to recognize my second network > card > > (two PCI DLinks/rtl8139). > > > > That all said, I'm a relative newbie to using Linux at this level. I'm > > slowly finding out where files reside, and how to configure the box at the > > command line. So, please include details in any response. Thanks. > > > > Any help, suggestions, or links to references are greatly appreciated. > > Thanks! > > > > Shawn Grover > > > > PS. I can forward my firewall script to you if needed, but it's a basic > NAT > > configuration right now.
