![]() – Internet Key Exchange (IKE) with main and quick mode – IPsec encryption in hardware with DES (56 bits), 3DES (168 bits), and AES (128, 192, 256 bits) – Protocol: IPsec (tunnel and transport mode, XAuth/Mode Config) – CIFS integrity check of network drives for changes to specific file types (e.g., executable files) – Individual rule sets as action (target) of firewall rules (apart from user firewall or VPN firewall) – Individual firewall rules for different users (user firewall) – Port forwarding (not in “Stealth” network mode) – 1:1 NAT (only in “Router” network mode) – NAT with FTP, IRC, and PPTP support (only in “Router” network mode) – Optional conversion of DSCP/TOS values (Quality of Service) – DNS cache on the internal network interface – DHCP server/relay on the internal and external network interfaces – Stealth (auto, static, multi), router (static, DHCP client), PPPoE (for DSL), PPTP (for DSL), and modem The mentioned properties are not guaranteed properties, as they are basically dependent on the respective device and on installed licenses. The dynamic packet filter inspects data packets using the source and destination address and blocks undesired data traffic. – Configurable firewall for protection against unauthorized access. – VPN router for secure data transmission via public networks (hardware-based DES, 3DES, and AES encryption, IPsec and OpenVPN protocol). – Industrial security network router (with built-in 4 or 5-port switch and DMZ port depending on the model). This vulnerability is remotely exploitable.The mGuard protects IP data links by combining the following functions: No known public exploits specifically target this vulnerability. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.Īdditional mitigation guidance and recommended practices are publicly available in the ICS‑CERT Technical Information Paper, ICS-TIP-12-146-01B-Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site. ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. Also recognize that VPN is only as secure as the connected devices.
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