Solaris Basic Networking

1
Solaris Basic Networking

• Usually configured through the startup GUI
  accessed by inserting the Solaris Installation CD
  and typing 'boot cdrom' at the ok prompt.
• Occasionally configured through the use of
  'sys-unconfig' at a shell prompt.
• Configured even less frequently by using the
  system files /etc/inet/hosts, /etc/resolv.conf,
  /etc/hme0.hostname, /etc/inet/networks,
  /etc/defaultrouter, /etc/nodename and the
  commands /usr/sbin/ifconfig.

2
Solaris Basic Networking

• Ifconfig -a shows all configured interfaces
• If this is a new network card, you must run 'boot
  -r' at the ok prompt so that the device tree can
  be updated.
• Check /dev for the appropriate interface name.
  This computer's interface name is hme0 so look
  for /dev/hme. The 0 is not shown in the device
  special file name.

3
Solaris Basic Networking

• 'ifconfig hme0 plumb' will mark the interface as
  available for configuration.
• 'ifconfig hme0 inet 10.0.0.33 netmask
  255.255.255.0 up' will configure the hme0
  interface and bring it online.
• route add default 10.0.0.1 will set a default
  route.
• If you have edited /etc/resolv.conf, you will be
  able to access the Internet.

4
Solaris Basic Networking

• Startup services are controlled through the files
  /etc/inittab and /etc/inet/inetd.conf/ as well as
  the files in the /etc/rc2.d and /etc/rc3.d
  directories.
• /etc/inittab controls what is run at specific run
  levels.
• Very rarely modified.

5
Basic Solaris Networking

• /etc/inet/inetd.conf is the list of services
  which the inet daemon invokes when contacted
  through the network.
• Ideally you should make a backup copy and then
  delete all of the contents from the original
  only adding back in those services which are
  critical to your server.
• For an explanation of each service and what they
  do please see http//www.nsa.gov/snac/os/sunsol/So
  laris8.pdf

6
Basic Solaris Networking

• The directories /etc/rc2.d and /etc/rc3.d contain
  the services and actions which are to be
  preformed as the system comes up through the run
  levels.
• Make a directory called 'disabled' in each of the
  rc directories.
• 'cd /etc/rc2.d'
• mkdir disabled
• Move the entire contents of the /etc/rc3.d
  directory into into disabled.
• Leave only those services you must have.

7
Basic Solaris Networking

• The rc3.d directory contains services which MUST
  be allowed to run.
• Again, reference http//www.nsa.gov/snac/os/sunos/
  sunsol/Solaris.pdf