Ensure SSH MaxSessions is set to 4 or less

低等級 2人工審核cos

說明

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.

檢查方式

稽核方法: 人工審核

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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

修補方式

修補方法: 操作指南或基礎設施修補檔

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

屬性

作業系統: 不限
標籤: container-optimized-oscosssh
參考資料: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.1.22 Ensure SSH MaxSessions is set to 4 or less