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【Linux操作系统】Linux配置OpenSSH服务器步骤记录

article 2024/10/28 0:16:07

1.安装OpenSSH服务器软件包

用指令查询，已经全部安装。

编辑/etc/ssh/sshd_config文件：

#       $OpenBSD: sshd_config,v 1.103 2018/04/09 20:41:22 tj Exp $



# This is the sshd server system-wide configuration file.  See

# sshd_config(5) for more information.



# This sshd was compiled with PATH=/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin



# The strategy used for options in the default sshd_config shipped with

# OpenSSH is to specify options with their default value where

# possible, but leave them commented.  Uncommented options override the

# default value.



# If you want to change the port on a SELinux system, you have to tell

# SELinux about this change.

# semanage port -a -t ssh_port_t -p tcp #PORTNUMBER

#

#Port 22

#AddressFamily any

#ListenAddress 0.0.0.0

#ListenAddress ::



HostKey /etc/ssh/ssh_host_rsa_key

HostKey /etc/ssh/ssh_host_ecdsa_key

#In FIPS mode Ed25519 keys are not supported, please comment out the next line

HostKey /etc/ssh/ssh_host_ed25519_key



# Ciphers and keying

#RekeyLimit default none



# This system is following system-wide crypto policy. The changes to

# crypto properties (Ciphers, MACs, ...) will not have any effect here.

# They will be overridden by command-line options passed to the server

# on command line.

# Please, check manual pages for update-crypto-policies(8) and sshd_config(5).



# Logging

#SyslogFacility AUTH

SyslogFacility AUTHPRIV

#LogLevel INFO



# Authentication:



#LoginGraceTime 2m

PermitRootLogin yes

#StrictModes yes

#MaxAuthTries 6

#MaxSessions 10



#PubkeyAuthentication yes



# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2

# but this is overridden so installations will only check .ssh/authorized_keys

AuthorizedKeysFile      .ssh/authorized_keys



#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 yes

#PermitEmptyPasswords no

PasswordAuthentication yes



# Change to no to disable s/key passwords

#ChallengeResponseAuthentication yes

ChallengeResponseAuthentication no



# Kerberos options

#KerberosAuthentication no

#KerberosOrLocalPasswd yes

#KerberosTicketCleanup yes

#KerberosGetAFSToken no

#KerberosUseKuserok yes



# GSSAPI options

GSSAPIAuthentication yes

GSSAPICleanupCredentials no

#GSSAPIStrictAcceptorCheck yes

#GSSAPIKeyExchange no

#GSSAPIEnablek5users 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'.

# WARNING: 'UsePAM no' is not supported in RHEL and may cause several

# problems.

UsePAM yes



#AllowAgentForwarding yes

#AllowTcpForwarding yes

#GatewayPorts no

X11Forwarding yes

#X11DisplayOffset 10

#X11UseLocalhost yes

#PermitTTY yes



# It is recommended to use pam_motd in /etc/pam.d/sshd instead of PrintMotd,

# as it is more configurable and versatile than the built-in version.

PrintMotd no



#PrintLastLog yes

#TCPKeepAlive yes

#PermitUserEnvironment no

#Compression delayed

#ClientAliveInterval 0

#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



# Accept locale-related environment variables

AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES

AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT

AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE

AcceptEnv XMODIFIERS



# override default of no subsystems

Subsystem       sftp    /usr/libexec/openssh/sftp-server



# Example of overriding settings on a per-user basis

#Match User anoncvs

#       X11Forwarding no

#       AllowTcpForwarding no

#       PermitTTY no

#       ForceCommand cvs server







Port 22

ListenAddress 192.168.0.2

PermitEmptyPasswords no

DenyUsers lisi

出现问题：E325: ATTENTION Found a swap file by the name "/etc/ssh/.sshd_config.swp"