Didar Hossain wrote: > On Wed, Jan 6, 2010 at 2:15 PM, Didar Hossain <didar.hossain@xxxxxxxxx> wrote: > >> On Wed, Jan 6, 2010 at 1:15 PM, j.halifax . <j.halifax@xxxxxxxxx> wrote: >> >>> Hi All, >>> >>> Pleaase help me in configuring FC12_64 as DHCP & FW & GW to ADSL Internet. >>> >>> I have: >>> - eth0 (xxx.39.189.92) connected to one port of the DSL router, eth0 configured with DSN' of ISP >>> - eth2 (10.255.250.37) connected to the local LAN, eth2 configured with DNS' of ISP >>> - DNS' of ISP are defined also in resolv.conf >>> - named is running >>> - dnsmasq running for eth0 (connected to DSL router port) >>> - iptables running >>> - FW has dns ports (53) open >>> - FW has eth2 (to internal LAN) as trusted interface >>> - Internet is accessible in that box (via eth0), websites in internal LAN as well (via eth2). >>> >>> >From another box in the LAN: >>> >>>> ping 10.255.250.37 >>>> >>> responds normal way >>> >>>> host isp.com 10.255.250.37 >>>> >>> doesn't respond >>> (in the 10.255.250.37 box the tcpdump shows requests coming in port 53, but they are not forwarded to superior ISP DNS and SUGHUP1 to dnsmasq reports 0 requests received/answered/failed/retried/sent) >>> >>> My question is: What is it incorect in my configuratins? >>> >> Maybe you need to - >> echo 1 > /proc/sys/net/ipv4/ip_forward >> >> and >> >> iptable -t nat -A POSTROUTING -s 10.255.250.0/24 -j SNAT --to xxx.39.189.92 >> > > Assuming, you set up 10.255.250.0 as class C - not right, but, people > do it sometimes. > > It is perfectly correct to an A-Class network into C-Class subnets. I would say it is done more often than not. -- Liberty don't work as good in practice as it does in speeches. -- The Best of Will Rogers Guess Who! http://tinyurl.com/mc4xe7
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