sshdについて｡日本語で｡

README.md

日本語で補足を書いた｡ /etc /ssh/ にあるのはArchだけかもしれない｡RHEL系は/etc/ sshd/ だった気がする｡ Source:openssh-VERSION-x86_64.pkg.tar.xz

sshd_config

# /etc/ssh/sshd_config
#	$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/sbin:/usr/local/bin:/usr/bin

# 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.

### 受信ポートは変えたほうがいいです｡(変えたほうがセキュリティが強くなります｡)
## 初期設定 22
#Port 22
## 下の設定のほうが強固｡5桁なら大丈夫だと思います｡(1~60035)
Port 60000

### これはIPV4,IPV6を許可するかの設定です｡通常変える必要はないです｡
## 全部許可(IPV4+IPV6)
#AddressFamily any
## IPV4だけ許可
#AddressFamily inet
## IPV6だけ許可
#AddressFamily inet6

### アクセスできるIPを設定します｡(未設定だとどのアドレスからでもアクセスが可能です｡)
## IPV4
#ListenAddress 0.0.0.0
## IPV6
#ListenAddress ::

### 秘密鍵のパスを設定(特にいじる必要はない｡)
#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_ecdsa_key
#HostKey /etc/ssh/ssh_host_ed25519_key

### セッション鍵の再生成(特にいじる必要はない｡)
# Ciphers and keying
#RekeyLimit default none

### ログ(初期値で問題ないです｡)
#SyslogFacility AUTH
## ログレベル(順にレベルが下っていく) EMERGE -> ALERT -> CRIT -> ERROR -> WARN -> NOTICE -> INFO -> DEBUG
## 初期値
#LogLevel INFO
LogLevel DEBUG

### 認証

## 認証可能時間の制限(mは分の事) EX: 制限時間19秒以内 -> LoginGraceTime 19
#LoginGraceTime 2m
## Rootログインの許可(noか初期値にしましょう｡また､インストール時などならyesでもいい｡) 禁止 -> no 許可 -> yes パスワードのみの認証を禁止 -> prohibit-password or without-password
PermitRootLogin prohibit-password
## パーティションのチェック(初期値yesでよろしい｡)
#StrictModes yes
## 認証にトライできる回数の上限(初期値でよろしい｡)
#MaxAuthTries 6
## 同時接続数の上限(初期値から減らしてもいい｡自分の環境に合わせて｡)
#MaxSessions 10

## 公開鍵認証の許可(普通はyes)
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
## 公開鍵登録ファイルのパス
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

# Change to no to disable s/key passwords
ChallengeResponseAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

# 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
#GatewayPorts no
#X11Forwarding no
#X11DisplayOffset 10
#X11UseLocalhost yes
#PermitTTY yes
PrintMotd no # pam does that
#PrintLastLog yes
#TCPKeepAlive yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS no
#PidFile /run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none

# no default banner path
#Banner none

# override default of no subsystems
Subsystem	sftp	/usr/lib/ssh/sftp-server

# Example of overriding settings on a per-user basis
#Match User anoncvs
#	X11Forwarding no
#	AllowTcpForwarding no
#	PermitTTY no
#	ForceCommand cvs server