LinuxDailup
Add a network interface (Private IP)
ifconfig eth0:0 netmask 255.255.255.0 192.168.10.50 route add -host 192.168.10.50 dev eth0:0
Add ipchains of masq
ipchains -A forward -s 192.168.10.0/24 -j MASQ
If you are using iptables (which is used to replace ipchains in the new Linux system), you don't need to create the interface eth0:0. Use the follow iptables rules:
iptables --flush iptables --table nat --flush iptables --delete-chain iptables --table nat --delete-chain iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE iptables --append FORWARD --in-interface ppp0 -j ACCEPT echo 1 > /proc/sys/net/ipv4/ip_forward
In /etc/inittab, activate the serial line
S0:2345:respawn /sbin/mgetty ttyS0 S1:2345:respawn /sbin/mgetty ttyS1
Start from Fedora 9, the Upstart is used to replace SysVInit, so you can't put it in inittab. In /etc/event.d, create a file ttyS0 with the following content:
# ttyS0 - getty # # This service maintains a getty on ttyS0 from the point the system is # started until it is shut down again. start on stopped rc2 start on stopped rc3 start on stopped rc4 start on stopped rc5 start on started prefdm stop on runlevel 0 stop on runlevel 1 stop on runlevel 6 respawn exec /sbin/mgetty -D ttyS0
To start the newly created service, use the command:
initctl start ttyS0
In /etc/ppp/options, add the following lines:
syncmap 0 netmask 255.255.255.0 proxyarp lock crtscts modem ms-dns 202.14.67.4 ms-dns 202.14.64.14
In /etc/ppp, add file options.ttyS0
login require-pap 192.168.10.51:192.168.10.56
In /etc/ppp, add file options.ttyS1
login require-pap 192.168.10.52:192.168.10.57
In /etc/ppp/pap-secrets
#client server secret IP addresses user1 * "" * user2 * "" *
In /etc/ppp/chap-secrets, copy the contents of pap-secrets
Set sticky for /usr/sbin/pppd:-
chmod u+s /usr/sbin/pppd
In /etc/bashrc, add a line
alias ppp="exec /usr/sbin/pppd -detach"
To reset the inittab file
init q
To connect to modem use the program
minicom
To initialize the minicom, use the "-s" option
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