Cellphone--ppp0--wlan0--Ad-Hoc
 

Debian Etch.
A landlord wants me to setup wireless in a large building, I will be employing bigger antennae, and Repeaters.

I want to setup building before buying landline connection, method:

I bring internet to box_1 by GPRS cellphone,
modprobe cdc-acm
/usr/sbin/pppd connect '/usr/sbin/chat -v "" "AT&F" OK "AT+CGDCONT=1,\"IP\",\"LEMONINTERNET\"" OK "ATDT*99#"' noauth /dev/ttyACM0 921600 defaultroute noipdefault user ppp usepeerdns


Box_1, I want to "pipe" ppp0 to wlan0. wlan0 to Box_2, Ad-Hoc?. Box_2, notebook/laptop has wireless card, I will roam building.


I need to NAT, is this correct?
modprobe iptable_nat
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -A FORWARD -i ppp0 -o wlan0 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE


Run pppd
tail -f /var/log/messages
local IP address 10.32.204.221
remote IP address 192.168.100.101
primary DNS address 193.35.133.10
secondary DNS address 193.35.134.10

ifconfig
ppp0 Link encap:Point-to-Point Protocol
inet addr:10.32.204.221 P-t-P:192.168.100.101 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1

pppd is always Mask:255.255.255.255


I am reading wireless HOWTO etc., I WANT TO DO MANUALLY.
Can I do this?

route add default gw 192.168.0.1
route add 192.168.0.1 dev ppp0

route add 192.168.0.1 dev wlan0


Any input many thanks, Andrew.

I have a much simpler suggestion..

You wire in the broadband access to a well ventilated room. In this room you install several L2 or L3 switches. Each port on the switch is connected to a power line network adapter. (one for each apartment location)

The opposite power line adapter is then connected to a wireless access point within the individual apartment.

This scheme will allow you to have a reasonable amount of connectivity with a minimum of interference from walls, etc. Furthermore it allows the tenant to improve reception by moving the power line adapter and the access point to convenient work locations.

I'm afraid I'm not enjoying networking at the minute.
Because unfortunately I don't quite understand exactly what I am doing, perhaps the best I can do is systematically try options.
I hope somebody could offer some input and perhaps I will learn and understand.

Cellphone won't function as a modem without pppd options defaultroute noipdefault usepeerdns.
Usepeerdns creates an /etc/ppp/resolv.conf file containing two nameserver lines with the addresses supplied by the peer.

Do I need to add a line to /etc/ppp/resolv.conf ?

Perhaps I should be using dhcpd & dnsmasq or something ?

I am trying to gain some understanding.

Any input appreciated.