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roles/common: default to disabling SSH passwords

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This commit is contained in:
Alan Orth 2023-08-10 22:09:03 +02:00
parent 11614e3725
commit 6794eb0432
Signed by: alanorth
GPG Key ID: 0FB860CC9C45B1B9
4 changed files with 19 additions and 4 deletions
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4
roles/common/defaults/main.yml
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@ -10,4 +10,8 @@ fail2ban_findtime: 3600
fail2ban_bantime: 1209600 fail2ban_bantime: 1209600
fail2ban_ignoreip: 127.0.0.1/8 172.26.0.0/16 192.168.5.0/24 fail2ban_ignoreip: 127.0.0.1/8 172.26.0.0/16 192.168.5.0/24
# Disable SSH passwords. Must use SSH keys. This is OK because we add the keys
# before re-configuring the SSH daemon to disable passwords.
ssh_password_authentication: disabled
# vim: set ts=2 sw=2: # vim: set ts=2 sw=2:

6
roles/common/templates/sshd_config_Debian-11.j2
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@ -56,7 +56,11 @@ AuthorizedKeysFile .ssh/authorized_keys
#IgnoreRhosts yes #IgnoreRhosts yes
# To disable tunneled clear text passwords, change to no here! # To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes {% if ssh_password_authentication == 'disabled' %}
PasswordAuthentication no
{% else %}
PasswordAuthentication yes
{% endif %}
#PermitEmptyPasswords no #PermitEmptyPasswords no
# Change to yes to enable challenge-response passwords (beware issues with # Change to yes to enable challenge-response passwords (beware issues with

6
roles/common/templates/sshd_config_Debian-12.j2
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@ -56,8 +56,12 @@ AuthorizedKeysFile .ssh/authorized_keys
#IgnoreRhosts yes #IgnoreRhosts yes
# To disable tunneled clear text passwords, change to no here! # To disable tunneled clear text passwords, change to no here!
{% if ssh_password_authentication == 'disabled' %}
PasswordAuthentication no
{% else %}
PasswordAuthentication yes PasswordAuthentication yes
PermitEmptyPasswords no {% endif %}
#PermitEmptyPasswords no
# Change to yes to enable challenge-response passwords (beware issues with # Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads) # some PAM modules and threads)

7
roles/common/templates/sshd_config_Ubuntu-20.04.j2
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@ -56,7 +56,11 @@ AuthorizedKeysFile .ssh/authorized_keys
#IgnoreRhosts yes #IgnoreRhosts yes
# To disable tunneled clear text passwords, change to no here! # To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes {% if ssh_password_authentication == 'disabled' %}
PasswordAuthentication no
{% else %}
PasswordAuthentication yes
{% endif %}
#PermitEmptyPasswords no #PermitEmptyPasswords no
# Change to yes to enable challenge-response passwords (beware issues with # Change to yes to enable challenge-response passwords (beware issues with
@ -122,7 +126,6 @@ Subsystem sftp /usr/lib/openssh/sftp-server
# AllowTcpForwarding no # AllowTcpForwarding no
# PermitTTY no # PermitTTY no
# ForceCommand cvs server # ForceCommand cvs server
PasswordAuthentication yes
# Originally from: https://stribika.github.io/2015/01/04/secure-secure-shell.html # Originally from: https://stribika.github.io/2015/01/04/secure-secure-shell.html
# ... but with ciphers and MACs with < 256 bits removed, as NSA's Suite B now # ... but with ciphers and MACs with < 256 bits removed, as NSA's Suite B now