Installing debian - kernel - internet access on phone

[Eric Smith]

Thanks Timo

eric at htpc7:~$ sudo iptables -A POSTROUTING -o net -t nat -j MASQUERADE 
-s 192.168.4.0/24
eric at htpc7:~$ sudo -i
htpc7:~# echo 1 > /proc/sys/net/ipv4/ip_forward
htpc7:~# 
htpc7:~#  sudo iptables -nvL -t nat
Chain PREROUTING (policy ACCEPT 3 packets, 748 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain POSTROUTING (policy ACCEPT 3 packets, 176 bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 MASQUERADE  all  --  *      net     192.168.4.0/24       0.0.0.0/0           

Chain OUTPUT (policy ACCEPT 3 packets, 176 bytes)
 pkts bytes target     prot opt in     out     source               destination         

htpc7:~# ping 192.168.4.202
PING 192.168.4.202 (192.168.4.202) 56(84) bytes of data.
^C
--- 192.168.4.202 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4015ms


-- 
- Eric Smith
Timo Juhani Lindfors said:
> Eric Smith <es at fruitcom.com> writes:
> > eric at debian:~$ sudo iptables -nvL -t nat
> > Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
> >  pkts bytes target     prot opt in     out     source               destination         
> >
> > Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
> >  pkts bytes target     prot opt in     out     source               destination         
> >
> > Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
> >  pkts bytes target     prot opt in     out     source
> >  destination         
> 
> This shows that there is no NAT. Your phone can't talk to the outside
> world using its private 192.168.4.202 address. You need to setup NAT
> that translates packets between public and private address. Something
> like
> 
> iptables -A POSTROUTING -o net -t nat -j MASQUERADE -s 192.168.4.0/24
> echo 1 > /proc/sys/net/ipv4/ip_forward
> 
> should work assuming that your upstream interface is called "net" like
> here. Yours might be eth0?
> 
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