During a Denial of Service attack, incomplete 3-way handshake requests are sent and the computer would set aside resources to wait for the handshake to complete.
Instead, the kernel si… (Rule: xccdf_rule_7.2.8_Enable_TCP_SYN_CookiesĪrtifact Expression: xccdf_ae_7.2.8.1_syncookies, The Center for Internet Security Ubuntu 12.04 LTS Level 1 Benchmark, v1.0.0)Īrtifact Expression: xccdf_ae_7.2.8.1_syncookies, The Center for Internet Security Ubuntu 12.04 LTS Level 2 Benchmark, v1.0.0) SYN cookies work by not using the SYN queue at all. When tcp_syncookies is set, the kernel will handle TCP SYN packets normally until the half-open connection queue is full, at which time, the SYN cookie functionality kicks in. Instead, the kernel simpl… (Rule:xccdf_rule_4.2.8_Enable_TCP_SYN_CookiesĪrtifact Expression:xccdf_ae_4.2.8.1_syncookies, The Center for Internet Security Red Hat Enterprise Linux 6 Level 1 Benchmark, 1.2.0)Īrtifact Expression:xccdf_ae_4.2.8.1_syncookies, The Center for Internet Security Red Hat Enterprise Linux 6 Level 2 Benchmark, 1.2.0) The following lines should be added to the SYS:\SYSTEM\AUTOEXEC.NCF file to improve the TCP/IP security: SET Discard Oversized Ping Packets = On SET Largest Pin… (§ 7.4, The Center for Internet Security Open Enterprise Server: NetWare (v1) Consensus Baseline Security Settings Benchmark, 1) The TCP/IP settings should be enhanced to improve the system's resistance to defend against network attacks and denial of service attacks.Instead, the kernel simply… (Rule: xccdf_rule_5.2.8_Enable_TCP_SYN_CookiesĪrtifact Expression: xccdf_ae_5.2.8.1_syncookies, The Center for Internet Security CentOS 6 Level 1 Benchmark, 1.0.0)
Instead, the kernel sim… (3.3.9, CIS Amazon Linux 2 Benchmark, v.2.0.0, Level 2)
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