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Old 05-25-2004, 12:19 PM   #1
Moszer
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Registered: Aug 2003
Location: Fargo, ND
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forward all dns requests to one page


Hello All,

I'm setting up bind on a linux box that I want to forward every request that comes to it to a specific webserver I've setup. I've looked all over the place and can't find how you do this, but I know you can... anyone have any insight?

Thanks in advance..
 
Old 05-25-2004, 12:36 PM   #2
maxut
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Registered: May 2003
Location: istanbul
Distribution: debian - redhat - others
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every ? i cannot get.
bind listens to port 53 (domain port). when your clients ask it some domians it finds the ip of that domains and send the answer to clients. also it answers other nameserver if they ask about your domain. u can just add a record for your web server in zone files. u cannot forward all http recuests to your web server with bind.

can u explain moreabout your question?

Last edited by maxut; 05-25-2004 at 12:37 PM.
 
Old 05-25-2004, 12:48 PM   #3
Moszer
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Registered: Aug 2003
Location: Fargo, ND
Posts: 25

Original Poster
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What I'm doing is setting up a wireless authentication system based on mac's and some other stuff, and when some random dude walks in the building we want him to get an ip from the dhcp from a different pool then registered users, which we did with the dhcpd.conf.. Along with that differnent ip we give him the ip of a dns I've setup on the same box. So then every web request the guy does will get redirected to the defualt page on a webserver we setup, also on that same box that says "You aren't a registered user of the wireless, please stop by and register blah blah blah"
The cable company up here in Fargo uses the exact same thing to register their cable modem users. If you hook up for the first time you get a registration page from one of their webserver and once you register your mac with them you get through normal every time..


So the only part I can't figure out is how to get bind to return the ip of the webserver I want for any and all page requests that come to it..
 
Old 05-25-2004, 01:37 PM   #4
maxut
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u need iptables commands as i understand.
do u have a like that network:
that guy (LAN2)-----linux(firewall,router,nat,etc)----internet
........................................ |
............................web server (for that guy) LAN1

if it is so u can forward http recuests which come from LAN2 network to web server by typing following iptables command:
#iptables -t nat -A PREROUTING -s LAN2/subnet -p tcp --dport 80 -j DNAT --to webserver_ip
#iptables -t nat -A POSTROUTING -d LAN2/subnet -s webserver_ip -p tcp --sport 80 -j SNAT --to linux_LAN2_NIC_ip
 
Old 05-25-2004, 02:34 PM   #5
Moszer
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Registered: Aug 2003
Location: Fargo, ND
Posts: 25

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keewl..

One guy told me that might work.. I'll giver a shot..

Thanks!
 
  


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