or if you want to do stuff easily on the existing Ubuntu then install the shorewall package. it is a good front end to iptables :-)
FAQs available on http://www.shorewall.net/ --Siju On Fri, May 21, 2010 at 2:42 PM, Siju George <[email protected]> wrote: > Hi Papu, > > IP tables can be very daunting if you are new. > > Try > > http://www.pfsense.org/ > > It is free and many people find it easy to manage since it has got a > nice GUI and it is claimed to be more secure than ubuntu/linux > > IF you want to insist on Linux then give > > http://www.smoothwall.org/ > > a try > > --Siju > > On Fri, May 21, 2010 at 2:14 PM, pappu ps <[email protected]> wrote: >> hi, >> >> myself pappu from Rajagiri College. i am dealing with the public relation >> section of the college's community service wing RAJAGIRI outREACH. i have >> minimal information about computing. but using linux for the past 2 years. >> >> our office is using a windows network with nearly 20 computers connected. >> and of course there is lot of trouble always. due to constant virus attack, >> the server that share internet connection gets crashed every time. so i >> suggested to use a linux computer that share internet. >> >> for this purpose, i have set up a machine with ubuntu 10.04. i could >> configure the network and all - one internal and one addl card lan. (it >> shows eth0 and eth1). i could also configure the BSNL broadband connection. >> but i am not able to share the connection with other computers in the >> windows network. i have gone through many steps described in ubuntu forums. >> ( https://help.ubuntu.com/community/Internet/ConnectionSharing is one) >> >> >> >> this was the procedure and status.! >> >> ch...@child-desktop:~$ sudo iptables -A FORWARD -i eth0 -o eth1 -s >> 192.168.0.0/24 -m conntrack --ctstate NEW -j ACCEPT >> >> ch...@child-desktop:~$ sudo iptables -A FORWARD -m conntrack --ctstate >> ESTABLISHED,RELATED -j ACCEPT >> >> ch...@child-desktop:~$ sudo iptables -A POSTROUTING -t nat -j MASQUERADE >> >> ch...@child-desktop:~$ sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward" >> >> ch...@child-desktop:~$ iptables -t nat -A POSTROUTING -o eth0 -j MASQUERAD >> iptables v1.4.4: can't initialize iptables table `nat': Permission denied >> (you must be root) >> Perhaps iptables or your kernel needs to be upgraded. >> >> ch...@child-desktop:~$ sudo iptables -t nat -A POSTROUTING -o eth0 -j >> MASQUERAD >> iptables v1.4.4: Couldn't load target >> `MASQUERAD':/lib/xtables/libipt_MASQUERAD.so: cannot open shared object >> file: No such file or directory >> >> Try `iptables -h' or 'iptables --help' for more information. >> >> i stuck at this step. i have no idea what happened when i typed these >> codes!!! >> >> please help me resolve this issue. >> also, is there any other simple methods to share the connections ? >> >> i would be greatful if you can suggest some simple methods. i mean codes >> with explanation. >> >> >> Thanks and regards >> >> >> Pappu >> >> _______________________________________________ >> Indian Libre User Group Cochin Mailing List >> http://www.ilug-cochin.org/mailing-list/ >> http://mail.ilug-cochin.org/mailman/listinfo/mailinglist_ilug-cochin.org >> #[email protected] >> > _______________________________________________ Indian Libre User Group Cochin Mailing List http://www.ilug-cochin.org/mailing-list/ http://mail.ilug-cochin.org/mailman/listinfo/mailinglist_ilug-cochin.org #[email protected]
