Types of Network Protocol Types On VPN protocols are a type of security on the Internet network in conducting activities Online Maintaining internal data security as well as client or customer data is an important part of any organization’s operations One way to protect data as it passes between internal and remote locations is by applying virtual private network (VPN).
The VPN has been around for a long time (over 20 years) and has been used in two main ways: protecting data from a host machine to a central location (client to network), or protecting data from one network to another network to the network. Both types of VPNs have been implemented over the public Internet.
- Understanding Of VPN
A VPN (or Virtual Private Network) is a way to make secure connections from a network or computer. VPNs use strong and limited encryption, access to private data that keeps data secure from other users of the underlying network which can often become public networks such as the Internet. VPNs have been used for years, but they have become stronger in recent years. They are more affordable and also much faster
In this connection, packets built in certain VPN protocol format are encapsulated in some basic protocol or other operator, then sent between the VPN client and server, and finally encapsulated at the receiving end. For Internet-based VPNs, packets in one of several VPN protocols are encapsulated in the Internet Protocol (IP) packet. The VPN protocol also supports authentication and encryption to keep the tunnel secure.
- Length of Encryption Key of Protocol
Modern computer cipher is a very complex algorithm. Even with the help of supercomputers, it’s very difficult to crack, if not impossible for all practical purposes. The most rough way to measure the strength of a cipher is by the complexity of the algorithm used to create it.
The more complex the algorithm, the more difficult the cipher is to solve using a brute force attack. This primitive form of attack is also known as a tedious key search. This basically involves trying every possible number of combinations until the correct key is found.
As I’m sure we all know, computers do all calculations using binary numbers: zeros and numbers. The complexity of a cipher depends on its key size in bits – the amount of raw ones and zeros required to express the algorithm, where each is zero or one represented by a single bit.
Type of Network Protocol Type On VPN
- Types of VPN Tunneling
VPN supports two types of tunneling – voluntary and mandatory. Both types of tunneling are commonly used.
In voluntary tunneling, the VPN client manages connection setup. The client first establishes a connection to the carrier network provider (ISP in case of Internet VPN). Then, the VPN client application creates a tunnel to the VPN server via this direct connection.
VPN tunnels are required to authenticate clients and associate them with specific VPN servers by using logic installed on the broker device. These network devices are sometimes called Front End Processor (FEP) VPNs, Network Access Server (NAS) or Point of Presence Server (POS). The tunnel is required to hide the VPN server connectivity details from the VPN client and effectively transfer the management control over the tunnel from the client to the ISP.
The two types of VPNs above are based on different VPN security protocols. Each of these VPN protocols offers different features and security levels, and is described below:
- Internet Security or IPSec Protocol:
The Internet Security or IPSec protocol is used to secure Internet communications over the IP network. IPSec secures Internet Protocol communications by authenticating sessions and encrypting each data packet during a connection.
IPSec operates in two modes, Transport mode and Tunneling mode, to protect data transfer between two different networks. Transport mode encrypts messages in data packets and tunneling mode encrypts the entire data packet. IPSec can also be used with other security protocols to improve the security system.
- Layer 2 Tunneling Protocol (L2TP):
The L2TP Tunneling Protocol or Layer 2 is a tunneling protocol that is usually combined with other VPN security protocols such as IPSec to create secure VPN connections. L2TP creates a tunnel between two L2TP connection points and the IPSec protocol encrypts data and handles secure communications between tunnels.
- Point-to-Point Tunneling Protocol (PPTP):
The PPTP or Point-to-Point Tunneling Protocol creates the tunnel and encapsulates the data packets. It uses the Point-to-Point Protocol (PPP) to encrypt data between connections. PPTP is one of the most widely used VPN protocols and has been used since Windows 95. In addition to Windows, PPTP is also supported on Mac and Linux.
- Secure Sockets Layer (SSL) and Transport Layer Security (TLS):
SSL (Secure Sockets Layer) and TLS (Transport Layer Security) create a VPN connection where the web browser acts as a client and user access is limited to certain applications, not the entire network. The SSL and TLS protocols are most commonly used by online shopping sites and service providers. The web browser switches to SSL easily and almost no action is required from the user, since the web browser integrates with SSL and TLS. The SSL connection has https at the beginning of the URL, not http but will be https.
OpenVPN is an open source VPN useful for making Point-to-Point and Site-to-Site connections. It uses a special security protocol based on the SSL and TLS protocols. And is the fastest and safest protocol for the internet
Secure Shell (SSH):
Secure Shell or SSH creates VPN tunnels used to transfer data and also ensures that tunnels are encrypted. SSH connections are created by the SSH client and data is transferred from the local port to the remote server via an encrypted tunnel.
SSL and TLS
SSL stands for Secure Sockets Layer and TLS stands for Transport Layer Security. Both work as a single protocol. Both are used to establish VPN connections. This is a VPN connection where the web browser functions as a client and user access is restricted to certain applications, not the entire network. The SSL and TLS protocols are used primarily by online shopping sites and service providers. SSL and TSL VPNs provide you with secure sessions from your PC browser to the application server. This is because the web browser switches to SSL easily and requires practically no action from the user. Web browser is integrated with SSL and TSL. SSL connections have https at the beginning of the URL instead of http.
- MPLS VPN
Multi-Protocol Label Switching or MPLS VPN is best used for the Site-to-Site connection type. This is mainly due to the fact that MPLS is the most flexible and easily customizable option. MPLS is a standards-based source used to speed up the distribution of network packets through multiple protocols. MPLS VPN is a system that is an ISP-tuned VPNs. The VPN set by the ISP is when two or more connected sites form a VPN using the same ISP. N
- MPLS VPN
Multi-Protocol Label Switching or MPLS VPN is best used for the Site-to-Site connection type. This is mainly due to the fact that MPLS is the most flexible and easily customizable option. MPLS is a standards-based source used to speed up the distribution of network packets through multiple protocols. MPLS VPN is a system that is an ISP-tuned VPNs. The VPN set by the ISP is when two or more connected sites form a VPN using the same ISP. But the biggest disadvantage to using MPLS VPN is the fact that the network is not as easy as installing comparability with other VPNs. It is also not easy to modify. Therefore, MPLS VPN is usually more expensive.
- VPN hybrid
Hybrid VPNs combine MPLS and Internet protocol security or IPsec-based VPNs. Although these two types of VPNs are used separately across various sites. However it is possible to use both on the same site. This will be done with the intention of using IPsec VPN as backup for VPN MPLS.
Also read: How to Open Blocked Sites with VPN
Hybrid VPNs are used by companies primarily because using MPLS for their sites will not be the most appropriate choice for their site. There are many advantages MPLS has over public internet connection, but the cost is high. Therefore using a hybrid VPN lets you access the central site through a remote site. The VPN hybrids are overall expensive but offer greater flexibility.