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(feature) Allow for customisation of SSH MaxStartups and MaxSessions #7

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merged 1 commit into from
Dec 21, 2020
Merged

(feature) Allow for customisation of SSH MaxStartups and MaxSessions #7

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4 changes: 4 additions & 0 deletions defaults/main.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,10 @@ allowed_users: ali saleh baker root #Put None or list of users space between eac
allowed_groups: None
deny_users: None
deny_groups: None
## 5.2.21 Ensure SSH MaxStartups is configured
ssh_max_Startups: "10:30:100"
# 5.2.22 Ensure SSH MaxSessions is limited
ssh_max_sessions: 10
# 5.4.1.1 Ensure password expiration is 365 days or less
pass_expire_in_days: 300
pass_warn_age: 7
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2 changes: 1 addition & 1 deletion tasks/section_1_Initial_Setup.yaml
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Expand Up @@ -786,7 +786,7 @@
- name: 1.7.1.2 Ensure AppArmor is enabled in the bootloader configuration | reload
shell: |
update-grub
when: output_1_7_1_2
when: output_1_7_1_2 | bool
tags:
- section1
- level_1_server
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8 changes: 4 additions & 4 deletions tasks/section_5_Access_Authentication_and_Authorization.yaml
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Expand Up @@ -448,25 +448,25 @@
- 5.2.20
# 5.2.21 Ensure SSH MaxStartups is configured
# To protect a system from denial of service due to a large number of pending authentication connection attempts, use the rate limiting function of MaxStartups to protect availability of sshd logins and prevent overwhelming the daemon.
- name: 5.2.21 Ensure SSH MaxStartups is configured
- name: "5.2.21 Ensure SSH MaxStartups is configured to {{ ssh_max_startups }}"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^MaxStartups"
line: "MaxStartups 10:30:100"
line: "MaxStartups {{ ssh_max_startups }}"
tags:
- section5
- level_1_server
- level_1_workstation
- 5.2.21
# 5.2.22 Ensure SSH MaxSessions is limited
# 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.
- name: 5.2.22 Ensure SSH MaxSessions is limited
- name: "5.2.22 Ensure SSH MaxSessions is limited to {{ ssh_max_sessions }}"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^MaxSessions"
line: "MaxSessions 10"
line: "MaxSessions {{ ssh_max_sessions }}"
tags:
- section5
- level_1_server
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