Firewall filters the network traffic and stop hackers to gain access over your valuable data. It also blocks the malicious websites and unwanted traffic. Webroot provides firewall feature for the better protection of your device and can install through www.webroot.com/safe. In this blog, you will read the types of firewall and its uses.
Types of Firewalls:
Basically, there is software, hardware and cloud based firewalls. Hardware firewall is physical such as router which is stored between your network and gateway. And the software firewall is internal which is in your computer program and works through port numbers and applications. Cloud-based firewall is called as Firewall as a Service (FaaS) which will grow with your organization and it is good with perimeter security.
Packet-Filtering firewalls: A packet-filtering firewall is a program which blocks network traffic IP protocol, an IP address and a port number. This type of firewall is made for the protection of smaller networks. And in this all web traffic is allowed, which means it doesn’t block web-based attacks. Hence, it is necessary to install additional protection so that you can recognize between friendly and malicious web traffic.
Stateful Multi-Layer Inspection (SMLI) Firewalls: The stateful multi-layer inspection firewall keeps the track of established connections and also filters the traffic which is based on state, port, and protocol with their administrator rules and context. It uses the data of the prior connections and the packets from the same connection. It provides multi layer monitoring but still you need additional security software to differentiate between good and bad web traffic.
Next-Generation Firewalls (NGFW): Next-generation firewalls provide more levels of security. This means it not only monitors the packet header but also a packet’s contents and source. NGFW can block the advanced level of malware.
Network Address Translation (NAT) Firewalls: A NAT firewall can assess the internet traffic and can also block the unsolicited communications. This firewall only accepts inbound web traffic.
Host-Based firewalls versus Network-Based firewalls: Network firewalls filters the incoming and outgoing internet traffic to secure local area networks (LAN). It is used by businesses those who wants to protect a large network of computers, servers, and employees. It monitors the communications between a company’s computers and the outside sources. It also restricts some websites, IP addresses or other services. Whereas, Host-based firewalls are stored locally on a single computer. It allows for more customization. It controls the incoming and outgoing traffic, and then allow traffic to particular devices and protect the host.
Open Access: If you do not have firewall, then you accept every connection into your network. Without firewall, you cannot detect incoming threats. This gives chance to the hackers to access your device.
Lost or Compromised data: If you do not have firewall, then anybody can gain control over your computer or network. And hackers can delete your data and may be they use your data to commit identity theft.
Network Crashes: Without a firewall, hackers can easily shut down your network. But if you run it again, then you have to spend time and money to recover your stored data.
These are some of the types of firewall and it uses. For help, you can visit to the site of Webroot via www.webroot.com/safe.