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What is a proxy server?

What is a proxy server?

Proxy server is a computer that sits between a client computer and a real server, and provide indirect network services to a client. A proxy server intercepts all client requests, and provide responses from its cache or forward the request to the real server. Proxy servers are used for a few purposes. If it is... Read More »

What is What is DHCP (Dynamic Host Configuration Protocol)?

What is What is DHCP (Dynamic Host Configuration Protocol)?

DHCP, Dynamic Host Configuration Protocol, is a communications protocol that dynamically assigns unique IP addresses to network devices. As a network device joins or leaves an IP-based network, DHCP automatically renews or releases an IP address. DHCP runs in a client/server mode, where server sets up a pool of available IP addresses for a network.... Read More »

What is loopback IP address?

What is loopback IP address?

The loopback IP address is the address used to access itself. The IPv4 designated 127.0.0.1 as the loopback address with the 255.0.0.0 subnet mask. A loopback interface is also known as a virtual IP, which does not associate with hardware interface. On Linux systems, the loopback interface is commonly called lo or lo0. The corresponding... Read More »

Public and Private IP Addresses

Public and Private IP Addresses

In order to maintain uniqueness within global namespace, the IP addresses are publicly registered with the Network Information Center (NIC) to avoid address conflicts. Devices that need to be publicly identified such as web or mail servers must have a globally unique IP address, and they are assigned a public IP address. Devices that do... Read More »

What is IP Address?

What is IP Address?

Internet Protocol Address (or IP Address) Internet Protocol Address (or IP Address) is an unique address that computing devices use to identify itself and communicate with other devices in the Internet Protocol network. Any device connected to the IP network must have an unique IP address within its network. An IP address is analogous to... Read More »

How does IP-based geolocation work?

How does IP-based geolocation work?

ARIN Whois database provides a mechanism for finding contact and registration information for IP resources registered with ARIN. The IP whois information is available for free, and determining the country from this database is relatively easy. When an organization requires a block of IP addresses, a request is submitted and allocated IP addresses are assigned... Read More »