![]() ![]() Recently, we have observed a brute-force cyber attack that originates from several IP addresses of cloud services and indiscriminately attempts to penetrate the network via IPsec VPN against a wide range of global IP addresses of the victim.The frequency of notification of disconnected tunnel identification numbers via IPsec Informational Exchange packets is now limited, reducing the occurrence of nonsensical packet ping-pong between attackers targeting IPsec VPN devices with a wide range of global IP addresses. ![]() In addition, if you have been receiving indiscriminate attack attempt packets targeting IPsec VPN devices, which have been occurring frequently on the Internet since around August 2021, and have been experiencing reduced communication speed or failed VPN connections for legitimate users, we recommend that you apply the update.
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