More sshd hardening

This commit is contained in:
2023-02-27 04:21:58 +00:00
parent 2c9e5544d3
commit 344dd16cc4

View File

@ -11,7 +11,7 @@ Include /etc/ssh/sshd_config.d/*.conf
# / / -_) __/ |/|/ / _ \/ __/ '_// / _ \/ _ `/
#/_/|_/\__/\__/|__,__/\___/_/ /_/\_\/_/_//_/\_, /
# /___/
#
Port 69
#AddressFamily any
#ListenAddress 0.0.0.0
@ -22,7 +22,7 @@ Port 69
#/ /__/ // / _ \/ _ \/ -_) __(_-< > _/_ _/ / ,< / -_) // / / _ \/ _ `/
#\___/\_, / .__/_//_/\__/_/ /___/ |_____/ /_/|_|\__/\_, /_/_//_/\_, /
# /___/_/ /___/ /___/
#
Ciphers aes256-gcm@openssh.com,aes256-ctr
KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp521
MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-512
@ -37,7 +37,7 @@ Protocol 2
# / /__/ _ \/ _ `/ _ `/ / _ \/ _ `/
#/____/\___/\_, /\_, /_/_//_/\_, /
# /___//___/ /___/
#
#SyslogFacility AUTH
#LogLevel INFO
@ -45,47 +45,39 @@ Protocol 2
# / _ |__ __/ /_/ / ___ ___ / /_(_)______ _/ /_(_)__ ___
# / __ / // / __/ _ \/ -_) _ \/ __/ / __/ _ `/ __/ / _ \/ _ \
#/_/ |_\_,_/\__/_//_/\__/_//_/\__/_/\__/\_,_/\__/_/\___/_//_/
#
AllowUsers coby
AllowGroups coby
#LoginGraceTime 2m
PermitRootLogin no
#StrictModes yes
#MaxAuthTries 6
#MaxSessions 10
MaxAuthTries 3
MaxSessions 10
PubkeyAuthentication yes
# Expect .ssh/authorized_keys2 to be disregarded by default in future.
#AuthorizedKeysFile .ssh/authorized_keys .ssh/authorized_keys2
#AuthorizedPrincipalsFile none
#AuthorizedKeysCommand none
#AuthorizedKeysCommandUser nobody
# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes
# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication no
PermitEmptyPasswords no
# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
#AuthorizedKeysFile .ssh/authorized_keys
#AuthorizedPrincipalsFile none
#AuthorizedKeysCommand none
#AuthorizedKeysCommandUser nobody
#HostbasedAuthentication no
#IgnoreUserKnownHosts no
#IgnoreRhosts yes
ChallengeResponseAuthentication no
UsePam yes
# __ __ __
# / //_/__ ____/ / ___ _______ ___
# / ,< / -_) __/ _ \/ -_) __/ _ \(_-<
#/_/|_|\__/_/ /_.__/\__/_/ \___/___/
#
#KerberosAuthentication no
KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no
@ -94,30 +86,21 @@ ChallengeResponseAuthentication no
# / ___/ __/ __/ _ | / _ \/ _/
#/ (_ /\ \_\ \/ __ |/ ___// /
#\___/___/___/_/ |_/_/ /___/
#
#GSSAPIAuthentication no
GSSAPIAuthentication no
#GSSAPICleanupCredentials yes
#GSSAPIStrictAcceptorCheck yes
#GSSAPIKeyExchange no
# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication. Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes
# ____ __
# / __/_ __/ /________ _
# / _/ \ \ / __/ __/ _ `/
#/___//_\_\\__/_/ \_,_/
#
#AllowAgentForwarding yes
#AllowTcpForwarding yes
AllowAgentForwarding no
AllowTcpForwarding no
PermitTunnel no
GatewayPorts no
X11Forwarding no
#X11DisplayOffset 10
@ -133,22 +116,8 @@ ClientAliveCountMax 3
#UseDNS no
#PidFile /var/run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none
# No default banner path
#Banner none
# Allow client to pass locale environment variables
AcceptEnv LANG LC_*
# Override default of no subsystems
Subsystem sftp /usr/lib/openssh/sftp-server
# Example of overriding settings on a per-user basis
#Match User anoncvs
# X11Forwarding no
# AllowTcpForwarding no
# PermitTTY no
# ForceCommand cvs server
Subsystem sftp /usr/lib/openssh/sftp-server