Preparing for a firewall failure: Firewall best practices

Network Firewalls, Routers and Switches

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  • Unlock new pathways to network security architecture

    Network security architecture is showing its age at many organizations. With new technology, different data types, and use of multi-generations of applications at an all-time high; security teams are looking at new and different ways to isolate, moni... 

  • Screen test: App-layer controls beef up perimeter firewalls

    Information Security magazine looked at the newest releases from six firewall vendors -- Check Point Software Technologies, NetScreen Technologies1, CyberGuard, Symantec, Secure Computing and WatchGuard Technologies -- to gauge the capabilitie... 

  • Defense-in-Depth: Securing the network from the perimeter to the core

    Enterprise networks are no longer a "crunchy shell around a soft, chewy center" and hence network defenses must be deployed inside the perimeter. But are network security vendors capable securing the network from the inside out? Also: Andrew Briney's... 

  • inline network device

    An inline network device is one that receives packets and forwards them to their intended destination. 

  • next-generation firewall (NGFW)

    A next-generation firewall (NGFW) is a hardware- or software-based network security system that is able to detect and block sophisticated attacks by enforcing security policies at the application level, as well as at the port and protocol level. 

  • egress filtering

    Egress filtering is a process in which outbound data is monitored or restricted, usually by means of a firewall that blocks packets that fail to meet certain security requirements. 

  • SDN controller (software-defined networking controller)

    An SDN controller is an application in software-defined networking (SDN) that manages flow control to enable intelligent networking. SDN controllers are based on protocols, such as OpenFlow, that allow servers to tell switches where to send packets. 

  • screened subnet (triple-homed firewall)

    A screened subnet (also known as a 'triple-homed firewall') is a network architecture that uses a single firewall with three network interfaces... (Continued) 

  • firewall

    A firewall is a set of related programs, located at a network gateway server, that protects the resources of a private network from users from other networks. 

  • bastion host

    On the Internet, a bastion host is the only host computer that a company allows to be addressed directly from the public network and that is designed to screen the rest of its network from security exposure. 

  • virus

    In computers, a virus is a program or programming code that replicates by being copied or initiating its copying to another program, computer boot sector or document. 

  • Firewall Builder (Fwbuilder)

    Firewall Builder, also called Fwbuilder, is a vendor-neutral configuration and management application for firewalls that is intended primarily for Linux and that supports the OpenBSD Packet Filter, Cisco PIX Series security devices, iptables, and ipf... 

About Network Firewalls, Routers and Switches

Learn how to choose a firewall, where to place it, how to tackle configuration, vulnerabilities and threats, and monitor traffic between secured and unsecured environments. Get advice on how to manage and secure routers and switches.