Ensure SSH MaxSessions is set to 4 or less

低级别 2人工审核cos

说明

The MaxSessions parameter specifies the maximum number of open sessions permitted from a given connection. To protect a system from denial of service due to a large number of concurrent sessions, use the rate limiting function of MaxSessions to protect availability of sshd logins and prevent overwhelming the daemon.

检查方式

审计方法: 人工审核

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Run the following command and verify that output MaxSessions is 4 or less, or matches site policy: # sshd -T | grep -i maxsessions # maxsessions 4

修复方式

修复方法: 操作指南或基础设施补丁

Edit the /etc/ssh/sshd_config file to set the parameter as follows: MaxSessions 4

属性

操作系统: 任意
标签: container-optimized-oscosssh
参考: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.1.22 Ensure SSH MaxSessions is set to 4 or less