Configuring Linux for STEP-UP

These instructions should be sufficient for most versions of the Linux operating system. Dialup to the campus network requires the use of a modem and a telephone line. Local and long-distance telephone charges may apply.

Set a DNS: echo "nameserver 130.70.128.2" >> /etc/resolv.conf
If pppd is the PPP daemon used, add a line to /etc/ppp/pap-secrets as:
MYCLID * PASSWORD *
where: MYCLID is your UCS id, and PASSWORD is your UCS password. The first '*' means any Cisco server will do, and the second '*' means that any IP address provided is acceptable.
Arrange to include the name MYCLID option on the pppd invocation line. On RedHat systems, a file called /etc/sysconfig/network-scripts/ifcfg-ppp5 should include this line: PAPNAME=myclid
The chat script is minimal; you only have to dial the number and wait for the CONNECT message from the modem. Some systems do this in the file /etc/sysconfig/network-scripts/chat-ppp5 which contains:
```
          'ABORT' 'BUSY'
          'ABORT' 'ERROR'
          'ABORT' 'NO CARRIER'
          'ABORT' 'NO DIALTONE'
          '' 'ATZ'
          'OK' 'ATE0DT7617837'
          'CONNECT' ''
```
To disable call waiting, the dialing string would be 'ATE0DT*70,7617837' off-campus or 'ATE0DT0029#9,7617837' on campus.

Under RedHat, the Control-Panel's Network-Configurator may prove helpful to build the files described above. Select either at-boot, to dialup UL Lafayette as your system boots up, or arrange a demand-dial or manual-dial configuration. This script will manually dial UL Lafayette:

          #!/bin/sh

          cd /etc/sysconfig/network-scripts
          ./ifup-ppp ./ifcfg-ppp5

          echo "Dialing UL STEPUP"
          echo "To hangup, type: hangup"

          if [ -f /var/log/messages ]; then
          echo Showing progress ... press Enter to quit
          tail -c 0 -f /var/log/messages &
          read
          trap "" 9
          killall -9 tail 2>/dev/null
          fi

          # is the ppp0 device available? (this catches failures)
          /sbin/ifconfig ppp0 2>&1 | grep -s "UP" > /dev/null
          if [ "$?" != "0" ]; then
          echo "Failed..."
          exit 0
          fi

          route add default ppp0

The hangup script would look like this:

			#!/bin/sh
			kill -9 'cat /var/lock/LCK..modem'

The pppd invocation thus looks like this (ps axlwww|grep pppd):
/usr/sbin/pppd -detach lock modem crtscts defaultroute name MYCLID \ debug /dev/modem 38400 remotename ppp5 ipparam ppp5 connect \ usr/sbin/chat -v -f /etc/sysconfig/network-scripts/chat-ppp5