What is DHCP and how it works?

Devices connecting to the internet all require a unique address, which is an IP address.

The internet is not one central server sitting in some facility with billions of computers connecting to it every day.

It is billions of computers connected to one giant global network.

Almost every – if not every – household today has multiple devices, and they all access the internet simultaneously, through a router.The text above is a summary, you can read the full article here.

Any third-party intercepting the communication cannot see the contents of the packets being sent.

It allows you to access unblocked websites and geo-restricted content on the internet because the destination server reads the masked IP address.

Internet communication takes place on several layers – from the link layer to the application layer.

Point-to-Point Tunneling Protocol (PPTP) was introduced back in 1999 by Microsoft, making it one of the oldest VPN protocols.

One area where it’s prominent is mobile devices, primarily because IKEv2 can reconnect easily in the event of a disconnection, and retain stability as the device switches between Wi-Fi and cellular data, which is why it has native support on iOS.

The only downside when you increase encryption strength is speed.

A session border controller can best be described as an appliance that sits at the edge of networks.

While security is no less important, the importance of media components and interoperability cannot be underplayed.

While hardware session border controllers were the norm today most such solutions are software based with more functionality such as least cost routing and billing.

Hackers may carry out a scan of the internal network port to footprint the topology and then launch frauds, thefts or denial of service (DoS).

Eavesdropping is possible wherein an attacker sniffs sessions and packets with malintent.

SBCs can prevent outbound telnet or SSH thereby acting as a guard against hijacking attempts.