Stay secure with our latest firewall updates, trends, and expert insights in information security to protect your digital assets effectively.
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Background for this topic.
Firewalls are security controls that permit or block network connections according to policy. They can operate at network boundaries, between internal segments, on individual hosts, or in cloud environments. Basic rules use addresses, ports, protocols, and connection state; more advanced firewalls may inspect applications or encrypted traffic where configured. Their purpose is to limit which systems can communicate, not to determine that all permitted traffic is safe.
Security depends heavily on accurate policy and maintenance. Overly broad, obsolete, or conflicting rules can expose services or allow unnecessary lateral movement, while unmanaged administrative interfaces and unpatched firewall software create additional attack surfaces. Practitioners should restrict management access, apply least-privilege rules, review and remove exceptions, and monitor logs for unexpected connections and policy changes. Firewall logs can support investigation, but encryption, evasion, and traffic allowed by policy may limit what the control can detect.
Sophos has addressed three vulnerabilities in its Sophos Firewall product that could allow remote unauthenticated threat actors to perform SQL injection, remote code execution, and gain privileged SSH access to devices. [...]
Sophos has addressed three vulnerabilities in its Sophos Firewall product that could allow remote unauthenticated threat actors to perform SQL injection, remote code execution, and gain privileged SSH access to devices. [...]
Sophos has released hotfixes to address three security flaws in Sophos Firewall products that could be exploited to achieve remote code execution and allow privileged system access under certain conditions
Many SonicWall Firewalls Are Unsupported or Lack Patches for Known VulnerabilitiesThousands of SonicWall network security devices remain exposed with critical security flaws, including 20,000 running outdated firmware that no longer receives vendor support. Despite patches available for some of these flaws, many organizations continue to run the outdated firmware.
Over 25,000 publicly accessible SonicWall SSLVPN devices are vulnerable to critical severity flaws, with 20,000 using a SonicOS/OSX firmware version that the vendor no longer supports. [...]