01-04-2012
Firewall problems on my ubuntu gw
Hi,
I make an ubuntu based gateway with dns, dhcp, proxy and a firewall.
The problem is with the firewall, a classroom is connected to gw.eth1 with private ip
17.18.43.XX and gw.eth0 with public ip 134.201.34.XX is connected to internet trought 134.201.3.1 and others server like LDAP on 134.201.34.55 ect...
classroom.private172.18.43.101-143--------172.18.43.100[eth0] GW |dhcp|dns|ntp|proxy|firewall [eth1]134.201.34.55-----{LDAP/SMB}--{Cups}----{134.201.3.1GW}...(INTERNET)
My GW is on ubuntu server 11.04
I use firehol as firewall but LDAP can't connect to classroom trought GW and viceversa.
I'm new to linux and i don't find how i configure firehol, access to dns is needed by LDAP and others servers, classroom need LDAP,DNS,SMB,DHCP,TFTP for PXE,SSH, internet trought proxy.
thanks.
thanks
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LEARN ABOUT DEBIAN
desproxy-dns
desproxy-dns(1) User Commands desproxy-dns(1)
NAME
desproxy-dns - DNS for dynamic connections
SYNOPSIS
desproxy-dns dns_server proxy_host proxy_port
OPTIONS
None
DESCRIPTION
If you have direct DNS access then you don't need to do anything else. You know you have direct DNS access if you can resolve host names
to IP addresses.
NOTE: as desproxy-dns listens in port 53 (which is less than 1024) you may need administrator privileges to exec desproxy-dns (in fact if
you are running UN*X, you actually have to run desproxy-dns as root).
OK, so you have a dns server accessible now. But your computer doesn't know anything about that. You must configure your network
accordingly (again, need to be root in UN*X).
Edit /etc/resolv.conf and add the line "nameserver 127.0.0.1". You don't have to restart anything. Just test ping and see if it works.
ENVIRONMENT
None.
FILES
None.
SEE ALSO
dnsproxy(1), ping(1)
AUTHORS
This manual page was written by Jari Aalto <jari.aalto@cante.net>, for the Debian GNU system (but may be used by others). Released under
license GPL v2 or any later version.
desproxy-dns 2012-03-26 desproxy-dns(1)