2020-01-28 20:39:42 +00:00
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# TCP port to bind to
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# Change to a high/odd port if this server is exposed to the internet directly
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2020-12-27 22:39:33 +00:00
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Port {{ ssh_port }}
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2020-01-28 20:39:42 +00:00
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2024-02-07 18:21:16 +00:00
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AllowUsers {% if hostname_slug in pve_hosts %}{{ me.user }}@{{ pve_hosts.internal_cidr }}{% endif %} {% if hostname_slug in nebula.clients %}{{ me.user }}@{{ nebula.cidr }}{% endif %} {{ me.user }}@{{ tailscale_cidr }} {{ ssh_extra_allowed_users }}
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2020-01-28 20:39:42 +00:00
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# Bind to all interfaces (change to specific interface if needed)
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ListenAddress 0.0.0.0
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# Force SSHv2 Protocol
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Protocol 2
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2020-05-23 11:45:53 +01:00
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HostKey /etc/ssh/ssh_host_ed25519_key
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2020-01-28 20:39:42 +00:00
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# Public key authentication + Password authentication
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# Two-Factor Authentication in OpenSSH v6.2+
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PubkeyAuthentication yes
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AuthenticationMethods publickey
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# Disable root SSH access
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PermitRootLogin no
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2020-01-28 21:04:26 +00:00
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# Client timeout
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2020-11-08 22:04:30 +00:00
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ClientAliveInterval 60
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ClientAliveCountMax 100
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2020-01-28 20:39:42 +00:00
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# Compression (only after authentication)
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Compression delayed
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# Logging
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SyslogFacility AUTH
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LogLevel INFO
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# Authentication must happen within 30 seconds
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LoginGraceTime 30
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PermitEmptyPasswords no
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# Check user folder permissions before allowing access
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StrictModes yes
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# Message Authentication Code (Hash, only SHA2-512)
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# SHA-256 included for compat with PuTTY-WinCrypt clients
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MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com
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# Ciphers (only secure AES-256)
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Ciphers aes256-ctr,aes128-gcm@openssh.com,aes128-ctr,aes192-ctr,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com
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# Key Exchange algorithms (Elliptic Curve Diffie-Hellman)
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# DH-SHA-256 included for compat with PuTTY-WinCrypt clients
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2020-01-28 21:04:26 +00:00
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KexAlgorithms diffie-hellman-group18-sha512,curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512
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2020-01-28 20:39:42 +00:00
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2020-01-28 21:04:26 +00:00
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# Don't read the user's ~/.rhosts and ~/.shosts files
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2020-01-28 20:39:42 +00:00
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IgnoreRhosts yes
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# Disable unused authentication schemes
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HostbasedAuthentication no
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ChallengeResponseAuthentication no
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KerberosAuthentication no
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GSSAPIAuthentication no
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UsePAM no
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# X11 support
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X11Forwarding no
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2020-01-28 21:04:26 +00:00
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# Don't show Message of the Day
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2020-01-28 20:39:42 +00:00
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PrintMotd yes
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# TCPKeepAlive (non-tunneled, disabled)
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TCPKeepAlive no
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# Allow client to pass locale environment variables
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AcceptEnv LANG LC_*
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Subsystem sftp internal-sftp
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