Hi All, After doing a bit more looking around, I noticed from the error output that perhaps there should not be a space between the forward slash and the j switch. So I did this, but received a different error ... my terminal output is included below. [root@localhost tony]# /sbin/iptables -D POSTROUTING -t nat -s 192.168.0.0/24 -d ! 192.168.0.0/24 \-j MASQUERADE iptables: No chain/target/match by that name Any ideas on where to go from here? Thanks for your help. Cheers, Tony ########### > Message: 13 > Date: Wed, 26 Oct 2005 11:22:37 +1000 > From: Tony Crouch <acrouch2@xxxxxxxxxx> > Subject: Re: FC4 IP Masquerading > To: fedora-list@xxxxxxxxxx > Message-ID: <1130289757.4050.5.camel@xxxxxxxxxxxxxxxxxxxxx> > Content-Type: text/plain > > Hi Jonathan, > Thanks for your reply with regards to my IP masquerading query. I ran > the two scripts you initially mentioned in your reply. It seems for > some > reason (even though the j or jump switches are contained within the > iptables manual, it reports an error ... I have included my terminal > output below. > > [root@localhost tony]# /sbin/iptables -D POSTROUTING -t nat -s > 192.168.0.0/24 -d ! 192.168.0.0/24 \ -j MASQUERADE > Bad argument ` -j' > Try `iptables -h' or 'iptables --help' for more information. > > > [root@localhost tony]# /sbin/iptables -D POSTROUTING -t nat -s > 192.168.0.0/24 -d ! 192.168.0.0/24 \ --jump MASQUERADE > Bad argument ` --jump' > Try `iptables -h' or 'iptables --help' for more information. > > > Any ideas as to why this switch is being reported as being invalid? > > Thanks for your help. > > Cheers, > Tony > > ################### > > > > > > Message: 18 > > Date: Tue, 25 Oct 2005 19:17:39 +0100 > > From: Jonathan Rawle <gmane@xxxxxxxxxxxxxxxxxxx> > > Subject: Re: FC4 IP Masquerading > > To: fedora-list@xxxxxxxxxx > > Message-ID: <djlss3$mtu$1@xxxxxxxxxxxxx> > > Content-Type: text/plain; charset=us-ascii > > > > Tony Crouch wrote: > > > > > Hi All, > > > 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 > > > > > > > Try the following three lines as a start: > > > > /sbin/iptables -D POSTROUTING -t nat -s 192.168.0.0/24 -d ! > > 192.168.0.0/24 \ > > -j MASQUERADE > > > > /sbin/iptables -t nat -s 192.168.0.0/24 -d ! 192.168.0.0/24 -A > > POSTROUTING \ > > -j MASQUERADE > > > > echo 1 > /proc/sys/net/ipv4/ip_forward > > > > > > If it works, to make it permanent, the first two > > (without /sbin/iptables) > > can be added to /etc/sysconfig/iptables. I'm sure there's a proper > way > > to > > turn on ip_forward, but I just put the third line in rc.local. > > > > > My firewall has been turned off within: "Desktop --> System > Settings > > --> > > > Security Level". > > > > > > > This is not a good idea, even on dial-up. Turn the firewall on, then > > allow > > any traffic through eth0 (or whatever your LAN is on) using: > > > > /sbin/iptables -I RH-Firewall-1-INPUT 2 -i eth0 -j ACCEPT > > > > > > Let us know if it works! > > > > > > Jonathan > > > > -- > > http://jonathan.rawle.org/ > > >
