Linux PPP server
----------------
The first step is to install the pppd demon and optionally the mgetty to use it on dialup modem, but this howto only covers the null modem (serial) part.
Once installed you must to create the following files:
/etc/sysctl.conf
net.ipv4.ip_forward=1
/etc/ppp/options
# demon
persist
noauth
auth
# compress
bsdcomp 12,15
deflate 12,15
# common options
proxyarp
lock
passive
lcp-echo-interval 8
lcp-echo-failure 6
nologfd
crtscts
local
# Windows compat
connect 'chat TIMEOUT 20000 CLIENT CLIENTSERVER'
# port settings
/dev/ttyS0
115200
/etc/ppp/options.ttyS0
# server ip : client ip
10.0.2.15:10.0.2.100
netmask 255.255.255.0
ms-dns 77.88.8.8
/etc/ppp/pap-secrets
# user server password ip
user * userPass *
You can launch the pppd demon on init or inittab.
Linux PPP client
----------------
Now in the client you must also install the pppd demon and create the following files:
/etc/ppp/options
# common options
defaultroute
lock
passive
lcp-echo-interval 8
lcp-echo-failure 6
nologfd
crtscts
local
# Windows compat
connect 'chat -v -f /etc/ppp/win.chat'
# port settings
/dev/ttyS0
115200
/etc/ppp/options.ttyS0
user user
/etc/ppp/win.chat
TIMEOUT 10
'' CLIENT\c
**Windows PPP client
------------------**
If you use Windows, also can connect to the network. The first step is download a null modem driver (e.g. MDMCBXNT.INF) and install it.
Now only is necessary create a new phone connection with the "NT Direct Connection" modem on 115200 bauds.
