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
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