On Tuesday 25 October 2005 18:53, Tim wrote: > On Wed, 2005-10-26 at 00:28 +1000, Tony Crouch wrote: > > I have spent the last few days trying to set up an IP masquerading > > situation on my home LAN (which only consists of my FC4 notebook and my > > windows XP desktop). I have gone through all the sites and read all > > about IP tables, but alas I still can't get it setup. > > > > The IPs' of my two machines are: > > Notebook (aka: masquerading box) : 192.168.0.1 > > Desktop : 192.168.0.2 > > > > My firewall has been turned off within: "Desktop --> System Settings --> > > Security Level". > > Turn it back on. Make your ethernet a trusted device to allow things > that are blocked to the untrusted device (ppp0). The services you allow > through the firewall refer to the untrusted device. You don't have to > tick them off to allow them to the trusted device (eth0). > > Alternatively, you can use a script to set your rules. I do this, it > allows me to make changes that'll be enacted every boot, that I can't do > using the "security level" tool. My script ends like this: > > ## Set up masquerading to allow internal machines access to outside > network: iptables --table nat --append POSTROUTING --out-interface ppp+ > --jump MASQUERADE > > I can't see a way to do that from the "security level" tool used to > configure iptable rules (ticking the "masquerade" options in it don't > seem to do anything). > > > I connect to the Internet via a ppp (dial-up) connection and as a result > > my external or ISP granted IP varies every time. > > > > Can anyone offer some support / help / advice for this? > > Look at /etc/sysctl.conf and set part of it like the following (it's > initially set to zero, meaning disabled): > > # Controls IP packet forwarding > net.ipv4.ip_forward = 1 > > -- > Don't send private replies to my address, the mailbox is ignored. > I read messages from the public lists. Hi Tim: Somehow your reply was sent three times. Might want to check your settings. Thanks, Tom -- Tom Taylor Linux user #263467 Federal Way, WA Iraq war: 2,000 US soldiers dead. Welcome back to Vietnam
