To configure PPP correctly, you should check the PPP-HOWTO. I try to explain it briefly, but if you have any questions or problems, read the HOWTO very carefully.
To configure your modem, you can alter the initstring of your modem. To learn more about your modem, check Ask Mr. Modem. Beware, if you have a winmodem you will not get it to work. More information about winmodems is at: http://linmodems.org/
Now, you need to have the ppp-package installed (check this by typing
pppd --version), make sure you have a recent one. Then you have to
make sure you've got these files:
/usr/local/bin/ppp
#!/bin/sh
case $1 in
on|start)
TELEPHONE='555-1212' # The telephone number for the connection
ACCOUNT='your_login' # The account name for logon (as in 'George Burns')
PASSWORD='your_pass' # The password for this account (and 'Gracie Allen')
INITSTRING='AT' # Modem initstring
IPLOCAL=0.0.0.0 # Local IP address if known. Dynamic = 0.0.0.0
IPREMOTE=0.0.0.0 # Remote IP address if desired. Normally 0.0.0.0
DEVICE=/dev/ttyS1 # Serial Device com1=ttyS0, com2=ttyS1,...
SPEED=57600 # 19200, 38400 or 57600 (don't try something different)
export TELEPHONE ACCOUNT PASSWORD INITSTRING
exec /usr/sbin/pppd $DEVICE $SPEED $IPLOCAL:$IPREMOTE \
user $ACCOUNT connect /etc/ppp/ppp-on-dialer
;;
off|stop)
if [ -r /var/run/ppp0.pid ]; then
kill -INT `cat /var/run/ppp0.pid`
if [ ! "$?" = "0" ]; then
rm -f /var/run/ppp0.pid
echo "ERROR: Removed stale pid file"
exit 1
fi
exit 0
fi
echo "ERROR: PPP link is not active on ppp0"
exit 1
;;
info|status)
/usr/sbin/pppstats
;;
*)
echo "Usage: ppp on|off|info|start|stop|status";
;;
esac
/etc/ppp/ppp-on-dialer
#!/bin/sh
exec /usr/sbin/chat -v \
TIMEOUT 3 \
ABORT '\nBUSY\r' \
ABORT '\nNO ANSWER\r' \
ABORT '\nNO CARRIER\r' \
ABORT '\nNO DIALTONE\r' \
ABORT '\nRINGING\r\n\r\nRINGING\r' \
'' "\r$INITSTRING\r" \
'OK-+++\c-OK' 'ATH0' \
TIMEOUT 30 \
OK "ATDT$TELEPHONE" \
CONNECT '' \
ogin:--ogin: "$ACCOUNT" \
ord: "$PASSWORD"
You can remove the -v once everything looks normal.
The pppd command uses /etc/ppp/options to list its options, change these options to whatever fits. These defaults normally work in most cases.
asyncmap 20a0000
crtscts
debug
default-mru
defaultroute
detach
escape 11,13,ff
hide-password
ipcp-accept-local
ipcp-accept-remote
lcp-echo-failure 4
lcp-echo-interval 400
modem
mtu 1500
netmask 255.255.255.0
noipdefault
passive
#idle 300
#kdebug 0
#lock
#-vj
Once dialing in works like a charm, you can leave debug out.
If your ISP requires CHAP or PAP, you need one of these files with their proper username and password:
/etc/ppp/pap-secrets or /etc/ppp/chap-secrets
#client server secret IP
your_login * your_pass *
To configure your nameservers, change /etc/resolv.conf. If dialing in is succesfull, but you can't get it to connect to URL's: this is probably the cause.
domain domain_of_your_isp
nameserver your_primary_nameserver
nameserver your_secondary_nameserver
Then if /usr/local/bin is in your PATH, you can easily
dial in with:
ppp on
and hangup with:
ppp off
and to get some statistics, you do:
ppp status
text-based
proxyarp
text-based
text-based
noccp
text-based
CHAP
PAP
defaultroute
PAP
PAP
Contributed by Christophe Lambin clambin@skynet.be
This section does not aim to be a definitive guide on ISDN for Linux. For a more detailed discussion on the topic, see Paul Slootman's ISDN4Linux HOWTO and ISDN4Linux-FAQ.
If you're using a 2.2 kernel, it's recommended to get an updated version of the ISDN code. You can retrieve the CVS at ftp://ftp.suse.com/pub/isdn4linux/. For more information, check: http://www.brisse.dk/site/linux/docs/isdn.htm
Warning: if you've recently purchased an Eicon Diva 2.0 PCI (eg, via Belgacom), there's a good chance you've actually got a Diva 2.01.In this case, you must get a version dated 1 July 1999 or later !
Once the ISDN is in place, you can start up the driver. Eg:
modprobe hisax type=11 protocol=2
Refer to the Readme's for the right parameters and values for your card.
Next, you'll need the ISDN4Linux toolkit. You can retrieve the latest version of the toolkit at: ftp://ftp.suse.com/pub/isdn4linux/
With the tools installed and configured, write a script to configure the interface, to be used for the ISDN connection. As always in Linux, there's no one correct way of doing this. I've put these in a script
/etc/rc.d/rc.isdn:
#!/bin/sh
MSNREMOTE='555-1212' # Phone number of ISP
MSNLOCAL='555-1313' # my number, without 0, with areacode
ACCOUNT='george' # The account for logon (as 'George Burns')
IPLOCAL=10.0.0.2 # my fixed IP (use 10.0.0.2 if no fixed)
IPREMOTE=0.0.0.0 # IP number of ISP
INTERFACE=ippp0
/sbin/modprobe hisax type=11 protocol=2
/sbin/isdnctrl verbose 3 system on
/sbin/isdnctrl addif $IF
/sbin/isdnctrl secure $IF on
/sbin/isdnctrl addphone $IF out $MSNREMOTE
/sbin/isdnctrl eaz $IF $MSNLOCAL
/sbin/isdnctrl huptimeout $IF 300
/sbin/isdnctrl l2_prot $IF hdlc
/sbin/isdnctrl l3_prot $IF trans
/sbin/isdnctrl encap $IF syncppp
# /sbin/isdnctrl dialmode $IF auto
/sbin/ifconfig $IF $IPLOCAL pointopoint $IPREMOTE -arp -broadcast
/sbin/ipppd /dev/ippp0 user $ACCOUNT $IPLOCAL:$IPREMOTE
To start this at boot time, make it executable and append the following to /etc/rc.d/rc.local:
if [ -x /etc/rc.d/rc.isdn ]; then
. /etc/rc.d/rc.isdn
fi
The ipppd command gets its parameters passed through a file, /etc/ppp/ioptions:
-ac
-bsdcomp
debug
defaultroute
ipcp-accept-local
ipcp-accept-remote
mru 1524
mtu 1500
noipdefault
-pc
useifip
-vj
-vjccomp
#idle 360
#persistent
Warning: do NOT specify +pap or +chap in this file. This specifies the authentication that ipppd should use for an INCOMING client. If you were to use this to connect to your ISP, ipppd would wait for the ISP to authenticate itself using the specified protocol.
Finally, create /etc/ppp/ip-down.local to handle the shutdown of the interface:
#!/bin/sh
/sbin/ifconfig $1 down
sleep 1
/sbin/ifconfig $1 10.0.0.2 pointopoint
Note: this is to handle some problems with routes on shutdowns. Anyone know of a clean(er) solution ?
If your ISP uses PAP or CHAP, create a file /etc/ppp/pap-secrets or /etc/ppp/chap-secrets. Its format is:
#client server secret IP
your_login * your_pass *
Not really related to ISDN, but a lot of people forget this step (too eager to try out all the stuff they typed in above ? :-)).
Anyway, you need to configure the DNS, by creating a file /etc/resolv.conf:
domain your_domain_of_your_isp
nameserver your_primary_nameserver
nameserver your_secondary_nameserver
Finally, you can write a little wrapper to start and stop the ISDN connection. I've put this as /usr/local/bin/isdn:
#!/bin/bash
case $1 in
on|start)
/sbin/isdnctrl dial ippp0
;;
off|stop)
/sbin/isdnctrl hangup ippp0
;;
info|status)
/sbin/isdnctrl list ippp0
;;
*)
echo "Usage: isdn on|off|info|start|stop|status"
;;
esac
Then if /usr/local/bin is in your PATH, you can easily
dial in with:
isdn on
and hangup with:
isdn off
DHCP was designed to make life easier, and most of the times it does ;) More information to set up your DHCP client can be found at: http://metalab.unc.edu/LDP/HOWTO/mini/DHCP.html which describes everything you need to know. (along with the information below)
Lots of people want to connect a whole network to their cablemodem, that's not a problem. You'll need IP-Masquerading ( http://metalab.unc.edu/LDP/HOWTO/mini/IP-Masquerade.html) and make sure the interface (that speaks to the cablemodem) has the right MAC-address !! Another solution (in case of problems) is to reset your cablemodem.
http://pac.pandora.be:8080
export http_proxy="http://proxy.pandora.be:8080/"
using DANA