[Solaris] Configuring NTP

Configuring NTP on the Solaris 9 OS

Mohammed Tanvir, October 2007

This tech tip provides a procedure for configuring the Network Time Protocol (NTP) on the Solaris 9 OS.

A. Configuring the NTP Server

1. Become superuser.

2. Create the ntp.conf file:

# cp /etc/inet/ntp.server ntp.conf

3. Update the ntp.conf file if you need to add more privileges for the NTP server:

# vi /etc/inet/ntp.conf
restrict x.x.x.x mask 255.255.255.0 notrust nomodify notrap 
restrict x.x.x.x noquery nomodify notrap
server x.x.x.x key 2
enable auth

driftfile /var/ntp/drift //Add drift file if necessary//
keys /etc/inet/ntp.keys
trustedkey 1 2
:wq!

4. Change the ownership of the ntp.conf file:

# chown root:root /etc/inet/ntp.conf
# chmod 600 /etc/inet/ntp.conf

5. Create the drift file, which is a file that contains the amount of clock error computed by the NTP daemon:

# touch /var/ntp/drift
# chown root:root /var/ntp/drift
# chmod 600 /var/ntp/drift

6. Set up the key file, which contains a list of keys and associated key IDs the server knows about:

# vi /etc/inet/ntp.keys
1 M keypass1     //Use the Tab key for space//
2 M keypass2	//Use the Tab key for space//
:wq!
# chown root:root /etc/inet/ntp.keys
# chmod 600 /etc/inet/ntp.keys

7. Start the NTP daemon:

# /etc/init.d/xntpd start

B. Configuring the NTP Client

1. Become superuser.

2. Create an ntp.conf file:

# vi /etc/inet/ntp.conf  //Or you can copy the ntp.client file//
restrict x.x.x.x noquery nomodify notrap
server x.x.x.x key 1
enable auth

driftfile /var/ntp/drift
keys /etc/inet/ntp.keys
trustedkey 1

3. Change the ownership of the file:

# chown root:root /etc/inet/ntp.conf
# chmod 600 /etc/inet/ntp.conf

4. Create the drift file:

# touch /var/ntp/drift
# chown root:root /var/ntp/drift
# chmod 600 /var/ntp/drift

5. Set up the key file:

# vi /etc/inet/ntp.keys
1 M keypass1	//Use the Tab key for space//
:wq!
# chown root:root /etc/inet/ntp.keys
# chmod 600 /etc/inet/ntp.keys

6. Start the NTP daemon:

# /etc/init.d/xntpd start
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