What is Firewall?

A firewall is a networking system that helps in preventing unauthorized access of one’s computer over the internet. It acts as the barrier between the system and the network. Firewall can enact both software and hardware appliances

Implementation of firewall

There are several types of firewall techniques: •

  • Packet filter: Looks at each packet entering or leaving the network and accepts or rejects it based on user-defined laws. Packet filtering is fairly effective and transparent to users, but it is difficult to configure. In addition, it is susceptible to IP spoofing
  • Application gateway: Applies security mechanisms to specific applications, such as FTP and Telnet servers. This is very effective, but can impose a performance degradation.
  • Circuit-level gateway: Applies security mechanisms when a TCP or UDP connection is established. Once the connection has been made, packets can flow between the hosts without further checking.
  • Proxy server: Intercepts all messages entering and leaving the network. The proxy server effectively hides the true network addresses.

Firewall Services


We deploy fully managed, licensed product and monitored using next Sophos firewall technologies


Ongoing device management, proactive device upgrades, and patch management with unlimited rule-set changes


Real-time health monitoring and expert response to threats and health issues


Custom configuration for installing and managing firewall systems according to your requirements with device provisioning, implementation