Archive for the tag 'protocol'

SBDavid
Oct 3rd, 2012

Linux Network Time Protocol Setup

Linux Network Time Protocol Setup

We can also synchronize the system clock with a remote server over the Network Time Protocol ( NTP).

For the one-time synchronization only, use the ntpdate command:

Check whether the selected NTP server is accessible:

[root@fedora ~]# ntpdate -q 0.rhel.pool.ntp.org
server 202.71.136.67, stratum 2, offset 0.014709, delay 0.25420
server 119.226.101.130, stratum 2, offset -0.007991, delay 0.21991
3 Oct 09:40:35 ntpdate[4083]: adjust time server 119.226.101.130 offset -0.007991 sec
[root@fedora ~]#

Run the ntpdate command followed by one or more server addresses:

[root@fedora ~]# ntpdate 0.rhel.pool.ntp.org 1.rhel.pool.ntp.org
3 Oct 09:41:36 ntpdate[4092]: adjust time server 119.226.101.131 offset 0.000724 sec

Enable the service.

[root@fedora ~]# systemctl status ntpd.service
ntpd.service - Network Time Service
Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled)
Active: inactive (dead) since Wed, 03 Oct 2012 09:42:42 +0530; 36s ago
CGroup: name=systemd:/system/ntpd.service

Oct 03 09:42:42 fedora.example.com ntpd[4105]: ntpd 4.2.6p5@1.2349-o Fri Apr 27 08:37:16 UTC 2012 (1)

SBDavid
Dec 10th, 2009

Specify the redirect host value when http is used on an https protocol

Specify the redirect host value when http is used on an https protocol

If you’ve enabled SSL=1 and the User enters http, then DA will give them the server IP redirect by default. This option will allow the admin to specify the value of the hostname in the redirect, which has an added benefit of forcing them to use the host that matches the certificate to valid ssl errors.

The directadmin.conf option will be:

ssl_redirect_host=host.name.com

The default setting is for the value to not be present in the directadmin.conf.

When it’s not present, the server IP will be used. With the option present, it’s value will be used (even it’s it’s blank) so make sure it only there if you want to use it.

Source: http://www.directadmin.com/