What is nslookup and How to use nslookup commands?

nslookup is the name of a program that lets an Internet server administrator or any computer user enter a host name (for example, "TheTechwin.com") and find out the corresponding IP address or domain name system (DNS) record. The user can also enter a command for it to do a reverse DNS lookup and find the host name for an... Continue Reading →

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How to OpenLDAP Server Configuration on CentOS 7

OpenLDP is an open-source implementation of Lightweight Directory Access Protocol developed by OpenLDAP project. LDAP is an Internet protocol that email and other programs use to look up contact information from a server.  LDAP is not limited to store the information; it is also used as a backend database for “single sign-on” where one password... Continue Reading →

How to Installing And Configuring A DHCP Server

As you know Dynamic Host Configuration Protocol (DHCP) is commonly implemented network services in today’s network environments. DHCP is primarily used to automatically distribute IP configuration settings to network clients, eliminating manually configuring hosts on TCP/IP-based networks. To Install DHCP role, you will have to follow the steps given below. Step 1 − Go to “Server Manager” →... Continue Reading →

What is Postmaster Mail Server and how to config?

Postmaster is the administrator of a mail server. Nearly every domain should have the e-mail address Admin@Example.com where errors in e-mail processing are directed. Error e-mails automatically generated by mail servers' MTAs (Mail Transport Agent) usually appear to have been sent to the postmaster address. SMTP server supporting mail relaying or delivery MUST support the... Continue Reading →

How to Accessing the Sonic-Wall Management Interface ?

Sonic-Wall configurations in order to have the main features working. Configuring LAN Interface Configuring the WAN (X1) connection Configuring other interfaces (X2, X3 or DMZ etc) Port forwarding to a server behind SonicWALL Configuring remote VPN connections (Group VPN, GVC, SSL-VPN, L2TP, etc.) Site to Site VPN and Route Based VPN configuration Configuring Wireless Connect... Continue Reading →

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