ACLs and VPNs -

ACLs and VPNs 

What are the main reasons why a VPN is the right solution for protecting the network perimeter? Do they also provide protection for mobile devices? 

Antivirus software alone is insufficient to protect user privacy and data - 

While the usual approach is to safeguard every device with antivirus, firewalls, and anti-malware software, the reality is that they are no longer sufficient. Although these security features do a good job of informing users about malicious files and cleaning up your device after they've been identified, you'll need to take preemptive precautions like using a VPN to truly protect yourself from these destructive attacks.

You can use a VPN to limit a hacker's ability to carry out these assaults. That is, rather than cleaning up your computer after an attack, a VPN will prevent a hacker from gaining access to your device and stealing your personal information in the first place. All they'll be able to see is incomprehensible nonsense thanks to encryption.

A VPN connects you to a server located in another location, establishing a safe and encrypted virtual "tunnel" through which your data can transit. When someone connects to an unknown, untrusted network, VPN immediately protects data by automatically activating VPN protection.

Why Individuals / Professionals Must Use a VPN

Every individual / professional should utilise a VPN, not only for their own privacy and security, but also to secure their personal and corporate data.

VPNs protection for mobile devices - 

Smartphones are the most common device we use to access the internet these days, especially while we're on the go. As a result, you should use a VPN on both your phone and your laptop or computer.

If you use a VPN for your smartphone, you get the following benefits:

Safe use of public Wi-Fi. Smartphones are frequently used to connect to public Wi-Fi networks. You are visible to other users on the network even if your connection is password-protected. A hacker could obtain your coffeeshop password and connect to the same network as you. By using a VPN, you will be protected by encryption and anonymised data.

Encryption for financial data. Smartphone apps for online banking are popular, but if you use them, you're transferring your financial data across the internet. When you utilise shopping apps like Amazon and Groupon, you're taking a similar risk with your online purchases. While many apps may utilise their own encryptions, a VPN can assist ensure that your data is not stolen.

Encryption for voice and video chat data. All online conversation on app like   Apple’s FaceTime, Skype, Google Hangouts, and even Wi-Fi calling can potentially have unwanted “listeners.” Encryption means no remote hackers or other organizations will be able to hop in and record your chats without your permission.

The difference between an access control list (ACL) that is used in routers to block traffic and firewalls. What similarities do they share? 

What is the difference and similarity between access control and firewall system? 

The basic application and goal of a firewall is to inspect data travelling through a portion of the network and decide what to let through and what to prevent.

ACLs do stateless inspection, which means the access list examines a packet without knowing what came before it. When an ACL examines a TCP packet with the ACK bit set, it can only conclude that it is an acknowledgement packet. It does not, however, know whether or not there is a conversation to which this packet belongs.

A firewall often does stateful inspection, which means that it not only sees the TCP packet with the ACK bit set, but it can also determine whether the TCP conversation started properly.

ACLs, unlike Firewalls, are built into Routers and Layer 3 devices. ACLs (standard or extended) can regulate traffic up to Layer 4 (ports and protocols), whereas firewalls can control traffic up to Layer 7 (Application Layer) of the OSI model.