sshd_config revision 1.31 1 # $NetBSD: sshd_config,v 1.31 2026/09/21 21:31:00 christos Exp $
2 # $OpenBSD: sshd_config,v 1.106 2026/07/10 17:21:19 naddy Exp $
3
4 # This is the sshd server system-wide configuration file. See
5 # sshd_config(5) for more information.
6
7 # The strategy used for options in the default sshd_config shipped with
8 # OpenSSH is to specify options with their default value where
9 # possible, but leave them commented. Uncommented options override the
10 # default value.
11
12 #Port 22
13 #AddressFamily any
14 #ListenAddress 0.0.0.0
15 #ListenAddress ::
16
17 #HostKey /etc/ssh/ssh_host_rsa_key
18 #HostKey /etc/ssh/ssh_host_ecdsa_key
19 #HostKey /etc/ssh/ssh_host_ed25519_key
20 #HostKey /etc/ssh/ssh_host_mldsa44_ed25519_key
21
22 # Ciphers and keying
23 #RekeyLimit default none
24
25 # Logging
26 #SyslogFacility AUTH
27 #LogLevel INFO
28
29 # Authentication:
30
31 # For slow CPUs, bumped from 2 minutes to 10
32 LoginGraceTime 600
33 #PermitRootLogin prohibit-password
34 #StrictModes yes
35 #MaxAuthTries 6
36 #MaxSessions 10
37
38 #PubkeyAuthentication yes
39
40 # The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
41 # but this is overridden so installations will only check .ssh/authorized_keys
42 AuthorizedKeysFile .ssh/authorized_keys
43
44 #AuthorizedPrincipalsFile none
45
46 #AuthorizedKeysCommand none
47 #AuthorizedKeysCommandUser nobody
48
49 # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
50 #HostbasedAuthentication no
51 # Change to yes if you don't trust ~/.ssh/known_hosts for
52 # HostbasedAuthentication
53 #IgnoreUserKnownHosts no
54 # Don't read the user's ~/.rhosts and ~/.shosts files
55 #IgnoreRhosts yes
56
57 # To disable password authentication, you must BOTH
58 # (a) set PasswordAuthentication to "no", AND
59 # (b) set KbdInteractiveAuthentication to "no", or set UsePAM to "no",
60 # or disable all password-based auth modules in /etc/pam.d/sshd.
61 # Alternatively, you can configure AuthenticationMethods with a
62 # specific list of methods excluding "password" and
63 # "keyboard-interactive".
64 #PasswordAuthentication yes
65 #PermitEmptyPasswords no
66
67 # Change to "no" to disable keyboard-interactive authentication. Depending on
68 # the system's configuration, this may involve passwords, challenge-response,
69 # one-time passwords or some combination of these and other methods.
70 #KbdInteractiveAuthentication yes
71
72 # Kerberos options
73 #KerberosAuthentication no
74 #KerberosOrLocalPasswd yes
75 #KerberosTicketCleanup yes
76 #KerberosGetAFSToken no
77
78 # GSSAPI options
79 #GSSAPIAuthentication no
80 #GSSAPICleanupCredentials yes
81
82 # Set this to 'yes' to enable PAM authentication, account processing,
83 # and session processing. If this is enabled, PAM authentication will
84 # be allowed through the KbdInteractiveAuthentication and
85 # PasswordAuthentication settings. Depending on your PAM configuration,
86 # PAM authentication via KbdInteractiveAuthentication may bypass
87 # the setting of "PermitRootLogin without-password".
88 # If you just want the PAM account and session checks to run without
89 # PAM authentication, then enable this but set PasswordAuthentication
90 # and KbdInteractiveAuthentication to 'no'.
91 UsePAM yes
92
93 #AllowAgentForwarding yes
94 #AllowTcpForwarding yes
95 #GatewayPorts no
96 #X11Forwarding no
97 # If you use xorg from pkgsrc then uncomment the following line.
98 #XAuthLocation /usr/pkg/bin/xauth
99 #X11DisplayOffset 10
100 #X11UseLocalhost yes
101 #PermitTTY yes
102 #PrintMotd yes
103 #PrintLastLog yes
104 #TCPKeepAlive yes
105 #PermitUserEnvironment no
106 #Compression delayed
107 #ClientAliveInterval 0
108 #ClientAliveCountMax 3
109 #UseDNS no
110 #PidFile /var/run/sshd.pid
111 #MaxStartups 10:30:100
112 #PermitTunnel no
113 #ChrootDirectory none
114 #VersionAddendum none
115
116 # no default banner path
117 #Banner none
118
119 # here are the new patched ldap related tokens
120 # entries in your LDAP must have posixAccount & ldapPublicKey objectclass
121 #UseLPK yes
122 #LpkLdapConf /etc/ldap.conf
123 #LpkServers ldap://10.1.7.1/ ldap://10.1.7.2/
124 #LpkUserDN ou=users,dc=phear,dc=org
125 #LpkGroupDN ou=groups,dc=phear,dc=org
126 #LpkBindDN cn=Manager,dc=phear,dc=org
127 #LpkBindPw secret
128 #LpkServerGroup mail
129 #LpkFilter (hostAccess=master.phear.org)
130 #LpkForceTLS no
131 #LpkSearchTimelimit 3
132 #LpkBindTimelimit 3
133 #LpkPubKeyAttr sshPublicKey
134
135 # override default of no subsystems
136 Subsystem sftp /usr/libexec/sftp-server
137
138 # the following are HPN related configuration options
139 # tcp receive buffer polling. disable in non autotuning kernels
140 #TcpRcvBufPoll yes
141
142 # allow the use of the none cipher
143 #NoneEnabled no
144
145 # disable hpn performance boosts.
146 HPNDisabled yes
147
148 # buffer size for hpn to non-hpn connections
149 #HPNBufferSize 2048
150
151 # Example of overriding settings on a per-user basis
152 #Match User anoncvs
153 # X11Forwarding no
154 # AllowTcpForwarding no
155 # PermitTTY no
156 # ForceCommand cvs server
157