Windows Boxes can't open SOME websites ?? iptables ?

[rawacid]

Hi -all
I've finally after years of preaching to my dad convice him to give linux a try all went well and by the third night he was compling kernels

But here is the problem after setting up a home-router that one from gentoo
He's windows boxes can't open some websites, ex(www.mweb.co.za ,www.sun.com etc) , but if he puts the same modem (Sentech wireless modem) on the windows machine those sites works fine.

So as a last resort I thought i'll come and beg some help

here is the specs

linux box (shuttle pc)

uname -a
Linux shuttle 2.6.9-gentoo-r4 #3 Mon Nov 15 23:44:28 SAST 2004 i686 VIA Nehemiah CentaurHauls GNU/Linux


uses DHCP and dnsmasq
/etc/dnsmasq.conf

domain-needed
bogus-priv
interface=eth0


iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere

Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- 192.168.0.0/16 anywhere
ACCEPT all -- anywhere 192.168.0.0/16

Chain OUTPUT (policy ACCEPT)
target prot opt source destination



route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
66.18.87.50 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
0.0.0.0 66.18.87.50 0.0.0.0 UG 0 0 0 ppp0


Some interessting things are that if i use lynx on the linux box i can open all the sites that i can't open from the windows box, but also bear in mind that i can open the sites on the windows box if i put the modem on the windows box

any ideas ??

[EmmEff]

[rawacid]

ahh yes i think your right it should read /24 what EXACLY should my netmasks on the windows's pc be ?
thank you

[EmmEff]

255.255.255.0 if you're using 192.168.0.0/24

[rawacid]

ok the netmask and stuff is fixed but still same problem ;(
any other ideas ??

pleaseee.

[EmmEff]

Did you reboot both client and server?

Where did you get your IP masquerading settings from? Recheck that documentation.

I've seen this problem before and it's always been because of a mistyped value in the iptables settings.

I have used MonMotha's IPTables Firewall with much success over the past few years. It does all of this as well as provides a good firewall setup.