gunnalag – Page 8

June 22, 2016October 6, 2016Networking, Unix Technologies

Setup or Migrate Postfix SMTP relay server on CentOS 6.5

Scenario: You have a External SMTP relay host configured on older and physical Linux box which you would like to migrate to CentOS host in a virtualized environment. The older Linux box running on Ubuntu 6.06 + Postfix 2.2.10. You want to migrate it to a virtual machine running CentOS 6.5 + Postfix 2.6.6. OS and Postfix Version details of existing server: root@NSHost1:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 6.06.2 LTS Release: 6.06 Codename: dapper root@NSHost1:~# root@NSHost1:~# postconf -d | grep mail_version mail_version = 2.2.10 root@NSHost1:~# OS and Postfix Version details of new server: […]

June 21, 2016June 22, 2016Networking, Unix Technologies

Setup or Migrate Bind Name Server Role on CentOS 6.8

Scenario: You have a External Name Server configured on older and physical Linux box which you would like to migrate to CentOS host in a virtualized environment. The older Linux box running on Ubuntu 6.06 + BIND 9.3.2-P2.1. You want to migrate it to a virtual machine running CentOS 6.8 + BIND 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6. OS and Postfix Version details of existing server: root@NSHost1:~# lsb_release -aNo LSB modules are available.Distributor ID: UbuntuDescription: Ubuntu 6.06.2 LTSRelease: 6.06Codename: dapperroot@NSHost1:~# root@NSHost1:~# named -vBIND 9.3.2-P2.1root@NSHost1:~# OS and Postfix Version details of new server: [root@DNSVM01 ~]# cat /etc/centos-releaseCentOS release 6.8 (Final)[root@DNSVM01 ~]# [root@DNSVM01 ~]# named -vBIND 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6[root@DNSVM01 […]

June 9, 2016Networking, Windows Technologies

Disabling Network Location Discovery stops Windows Systems from Pinging

Scenario: To Turn off the Network Location wizard for users, you make below changes to the Network Sharing Settings since then your Windows Systems become not responsive to the Ping command. However, RDP and C$ Drive access still works fine. Enables “Turn off file and printer sharing” for Domain (current profile) Solution: To let your Windows systems to be again responsive to ping commands, you need to enable “Turn on file and printer sharing” for Domain (current profile). Further, to disable the Network Location wizard for users you may need to implement the below registry fixes: Create below registry […]