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tdphys

Member

From: Lower Mainland

Registered: 2005-06-14

Posts: 50

forwarding usb network device[Solved]

Edit:

Okay, it works now,  the device kept trying to loading wifi connection that had to be web-authenticated before it worked, blocking the routing.

Hi,

I'm trying to use my laptops ethernet  connection to share internet with my phone (nokia n900).  I've got the phone and the laptop pinging each other just fine, but I can't ping the outside world with the phone, though I can with the laptop.
The phone's ip is 192.168.2.15,  and it's using 192.168.2.14 as a gateway
the following files are all from the laptop

I'm using iptables,  here is some output:

sudo iptables -t nat -L

Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination         

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination         
MASQUERADE  all  --  anywhere             anywhere            
MASQUERADE  all  --  192.168.2.15         anywhere            
MASQUERADE  all  --  anywhere             anywhere            
MASQUERADE  all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

sudo iptables -L

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

sysctl.conf

#
# Kernel sysctl configuration
#

# Disable packet forwarding
net.ipv4.ip_forward=1

# Disable the magic-sysrq key (console security issues)
kernel.sysrq = 0

# Enable TCP SYN Cookie Protection
net.ipv4.tcp_syncookies = 1

ifconfig n900

n900      Link encap:Ethernet  HWaddr BA:AD:3F:5C:25:48  
          inet addr:192.168.2.14  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::b8ad:3fff:fe5c:2548/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1793 errors:0 dropped:0 overruns:0 frame:0
          TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:107555 (105.0 Kb)  TX bytes:1448 (1.4 Kb)

/etc/udev/rules.d/99-nokia-n900.rules

SUBSYSTEM=="net", ACTION=="add", ENV{ID_USB_DRIVER}=="cdc_ether", ENV{ID_MODEL}="N900__PC-Suite_Mode", ENV{ID_VENDOR}=="Nokia", NAME="n900"
SUBSYSTEM=="net", ACTION=="add", ENV{ID_USB_DRIVER}=="cdc_phonet", ENV{ID_MODEL}="N900__PC-Suite_Mode", ENV{ID_VENDOR}=="Nokia", NAME="n900pn"

lines out of rc.conf

n900="n900 192.168.2.14 netmask 255.255.255.255.0"
DAEMONS=(syslog-ng cpufreq netfs crond sensors hal alsa wicd sshd cups iptables)

Last edited by tdphys (2010-01-29 18:27:45)