broadcast to router

[sticky73]

---

hi
i connect to the internet using my phone (/etc/init.d/net.usb0)
i want to pipe this connection from my computer into a router and broadcast it

how would i go about doing this?

eth0      Link encap:Ethernet  HWaddr e0:cb:4e:44:f3:83 
          inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::e2cb:4eff:fe44:f383/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1219 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1140 errors:0 dropped:0 overruns:0 carrier:23
          collisions:0 txqueuelen:1000
          RX bytes:818864 (799.6 KiB)  TX bytes:105753 (103.2 KiB)
          Interrupt:19

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:425 errors:0 dropped:0 overruns:0 frame:0
          TX packets:425 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:33368 (32.5 KiB)  TX bytes:33368 (32.5 KiB)

usb0      Link encap:Ethernet  HWaddr fa:f5:7a:37:17:9a 
          inet addr:172.20.23.XXX  Bcast:172.20.23.255  Mask:255.255.255.252
          inet6 addr: fe80::f8f5:7aff:fe37:179a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3056 errors:30 dropped:0 overruns:0 frame:30
          TX packets:3988 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1983935 (1.8 MiB)  TX bytes:675978 (660.1 KiB)

i also have an ath9k wireless card
i'm using gentoo linux

[Dapper Dan]

A 56k connection? I think you'd need to get a wireless router/modem that accepts 56k. This unit will do that:

ZoomAir Wireless 4165 Router review

There may be cheaper ones out there. Google: 56k wireless router.

[Rubberman]

Are you saying that you want to share your modem connection with local computers via WiFi?

[sticky73]

by phone i mean smartphone (android htc eris) 3g network
it's tethered to my computer via usb0

this is what i'm aiming for:
computer b (wlan0) -> router (eth0) -> computer a (usb0) -> phone -> internet

computer a uses net.usb0 to connect to the internet through the phone
i want to pipe this connection to the router via eth0
the router then would broadcast the signal and computer b would connect to the router via wlan0

[sticky73]

Here is everything I've tried:
/etc/conf.d/net:

config_usb0=( "dhcp" )
config_eth0=( "192.168.1.2/24" )

iptables:

iptables -F
iptables -t nat -F
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD DROP
export LAN=eth0
export WAN=usb0
iptables -I INPUT 1 -i ${LAN} -j ACCEPT
iptables -I INPUT 1 -i lo -j ACCEPT
iptables -A INPUT -p UDP --dport bootps ! -i ${LAN} -j REJECT
iptables -A INPUT -p UDP --dport domain ! -i ${LAN} -j REJECT
iptables -A INPUT -p TCP --dport ssh -i ${WAN} -j ACCEPT
iptables -A INPUT -p TCP ! -i ${LAN} -d 0/0 --dport 0:1023 -j DROP
iptables -A INPUT -p UDP ! -i ${LAN} -d 0/0 --dport 0:1023 -j DROP
iptables -I FORWARD -i ${LAN} -d 192.168.1.0/255.255.255.0 -j DROP
iptables -A FORWARD -i ${LAN} -s 192.168.1.0/255.255.255.0 -j ACCEPT
iptables -A FORWARD -i ${WAN} -d 192.168.1.0/255.255.255.0 -j ACCEPT
iptables -t nat -A POSTROUTING -o ${WAN} -j MASQUERADE 
/etc/init.d/iptables save

router (linksys wrt120n):

Internet Connection Type
[] DHCP
[x] Static IP
[] PPPoE
[] PPPTP
[] L2TP
[] Telstra Cable
Internet IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.2
DNS: 208.67.222.222
Local IP Address: 192.168.1.1
DHCP Server [x] enabled
Start Address: 192.168.1.100
Max 50 Users
Range: 192.168.1.100 - 149
Routing Table:
Dest IP              Subnet Mask        Gateway      Interface
0.0.0.0              0.0.0.0                 192.168.1.2  WAN(Internet)
208.67.222.222  255.255.255.255   192.168.1.2  WAN(Internet)
192.168.1.2       255.255.255.255   192.168.1.1  WAN(Internet)
192.168.1.0       255.255.255.0       192.168.1.1 LAN & Wireless
127.0.0.1          255.255.255.255   127.0.0.1      Loopback

starting services:

/etc/init.d/iptables start
/etc/init.d/net.usb0 start
/etc/init.d/net.eth0 start

still, computer B can't access the internet and the "web" light on the router is not lit
this leads me to believe i'm not using iptables correctly (or incorrect router settings)
i'm pretty sure the router is capable of this, since i've used it as a network switch in the past (internet -> router a -> router b -> LAN)

ifconfig:

eth0      Link encap:Ethernet  HWaddr e0:cb:4e:44:f3:83  
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::e2cb:4eff:fe44:f383/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:385 errors:0 dropped:0 overruns:0 frame:0
          TX packets:369 errors:0 dropped:0 overruns:0 carrier:13
          collisions:0 txqueuelen:1000 
          RX bytes:227749 (222.4 KiB)  TX bytes:34588 (33.7 KiB)
          Interrupt:19 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:72 errors:0 dropped:0 overruns:0 frame:0
          TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:4500 (4.3 KiB)  TX bytes:4500 (4.3 KiB)

usb0      Link encap:Ethernet  HWaddr fa:f5:7a:37:17:9a  
          inet addr:172.20.23.xxx  Bcast:172.20.23.255  Mask:255.255.255.252
          inet6 addr: fe80::f8f5:7aff:fe37:179a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2591 errors:13 dropped:0 overruns:0 frame:13
          TX packets:3315 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1740041 (1.6 MiB)  TX bytes:575461 (561.9 KiB)

emerge --info:

Portage 2.1.8.3 (default/linux/x86/10.0/desktop, gcc-4.4.3, glibc-2.11.2-r0, 2.6.34-gentoo-r1 i686)
=================================================================
System uname: Linux-2.6.34-gentoo-r1-i686-Intel-R-_Atom-TM-_CPU_N270_@_1.60GHz-with-gentoo-1.12.13
Timestamp of tree: Sun, 12 Sep 2010 15:30:01 +0000
app-shells/bash:     4.1_p7
dev-java/java-config: 2.1.11
dev-lang/python:     2.6.5-r3, 3.1.2-r4
dev-util/cmake:      2.8.1-r2
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.13, 2.65
sys-devel/automake:  1.4_p6-r1, 1.8.5-r4, 1.9.6-r3, 1.10.3, 1.11.1
sys-devel/binutils:  2.20.1-r1
sys-devel/gcc:       4.4.3-r2
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
sys-devel/make:      3.81-r2
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="* -@EULA"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=core2 -mtune=generic -fomit-frame-pointer -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/X11/xkb /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=core2 -mtune=generic -fomit-frame-pointer -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch"
GENTOO_MIRRORS="XXX"
LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl,--warn-once"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac acl acpi alsa berkdb bittorrent bluetooth branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvd dvdr emboss encode exif extras fam firefox flac fortran gdbm gif gnutls gpm hal iconv ipv6 java jpeg lcms ldap libnotify mad mikmod mng modules mp3 mp4 mpeg mudflap ncurses nls nptl nptlonly nsplugin ogg opengl openmp pam pango pcre pdf perl png ppds pppd python readline reflection sdl session spell ssl startup-notification svg sysfs tcpd thunar tiff truetype unicode usb vorbis x264 x86 xcb xml xorg xulrunner xv xvid zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="intel" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" 
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY

[Rubberman]

Sorry to take so long to get back to you. What I do is to set up the phone into a WiFi hotspot mode instead of teathering it. That way, up to 5 devices/computers can access the internet using the phone as a WiFi access point and bypass the router altogether. You can set up the computer it is teathered to as a router, but in that case you probably need to reconfigure your regular router so that it routes gateway packets to the tethered system.

[sticky73]

i found using the wireless tethering heated up the battery and drained it extremely fast. i ended up wired tethering to the computer, ip masquerading using it as a router, broadcasting the signal via wlan0 ad hoc mode

[Rubberman]

Glad you seem to have resolved your problems. The Android phones are flexible little buggers, aren't they?

[Rubberman]

BTW, I think you can connect the phone to your computer USB port (without activating tethering or data mode - just charge mode), and still use it as a WiFi hotspot. The USB connection will keep it charged.