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i have installed 11.10 Ubuntu

i have internet in mobile then create hospot for access internet in laptop...

now main thing is that how can i share that to lan(eth0).

Path of internet

Mobile WIFI --> Laptop WIFI --> Laptop Lan --> Smart TV Lan

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Check this Question: Share Wireless connection with Wired Ethernet Port –  Dan Jul 24 '12 at 15:20
    
flagged as a possible duplicate? askubuntu.com/questions/3063/… –  fossfreedom Jul 26 '12 at 20:06
    
    
I have asked this question before you linked question @EricCarvalho –  Ankur Loriya Aug 17 at 8:50

1 Answer 1

up vote 2 down vote accepted

You can run a NAT/Firewall software like Firestarter on the LAPTOP (install from the software center).

Another solution without running anything is to do the NAT manually with iptables on NAT Table postrouting using Masquerade on your wi-fi interface. See rule below:

-A POSTROUTING -o wlan0 -j MASQUERADE

and you will need to enable ip forwarding with:

/bin/echo 1 > /proc/sys/net/ipv4/ip_forward

or make it permanent with:

sudo nano /etc/sysctl.conf

Modify the line: net.ipv4.ip_forward=1

Apply: sudo sysctl -p /etc/sysctl.conf

Verify: cat /proc/sys/net/ipv4/ip_forward

Should show 1

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thanks i will checkout.... –  Ankur Loriya Jul 24 '12 at 16:18

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