Managed Firewall Service

A firewall is a network security tool that creates a logical network barrier between internal devices, the Local Area Network (LAN), and the Wide Area Network (WAN). A firewall filters traffic, only allowing approved data packets while excluding malicious traffic. Atlantic.Net’s Managed Firewall Service uses stateful packet inspection to filter out fake URL requests by source, destination IP, IP protocol, or destination port for TCP and UDP traffic. This allows only legitimate addresses to pass across the security perimeter.

A firewall works by inspecting all incoming and outgoing traffic and comparing it to a set of predefined rules. These rules determine whether the traffic is allowed or blocked. Firewalls can be configured to allow or block traffic based on a variety of factors, such as the source and destination IP address, the port number, and the protocol.

Firewalls offer many benefits, including:

• Increased security: Firewalls can help to protect your network from unauthorized access, malware, and other threats.
• Improved performance: Firewalls can help to improve network performance by blocking unwanted traffic.
• Reduced risk of compliance violations: Firewalls can help you comply with industry regulations and data protection laws.

There are three main types of firewalls:

• Packet filtering firewalls:These firewalls inspect individual packets of data and allow or block them based on predefined rules.
• Stateful packet inspection (SPI) firewalls:These firewalls inspect individual packets of data and also keep track of the state of connections. This allows them to make more informed decisions about whether to allow or block traffic.
• Proxy firewalls:These firewalls act as an intermediary between your network and the internet. All traffic must pass through the proxy server, which can then inspect and filter it.

The best firewall for your needs will depend on several factors, such as the size of your network, your security requirements, and your budget. It is important to consult with a security professional to determine the best firewall for your specific needs.

Configuring a firewall can be a complex task. It is important to consult the documentation for your specific firewall or to seek help from a network security professional.

It is important to monitor your firewall regularly to ensure that it is functioning properly. You should also review the firewall logs to identify any suspicious activity.

Some common firewall problems include:

• The firewall is blocking legitimate traffic.
• The firewall is not blocking malicious traffic.
• The firewall is not configured correctly.
• The firewall is not being monitored properly.