Сменить порт ssh сервера

Port 12345

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin yes
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile	%h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication yes

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

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# 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

daniel@ideapad:~$ dpkg -l | grep ssh
ii  libssh-4:i386                        0.5.4-1                            i386         tiny C SSH library
ii  libssh2-1:i386                       1.4.2-1.1                          i386         SSH2 client-side library
ii  openssh-blacklist                    0.4.1+nmu1                         all          list of default blacklisted OpenSSH RSA and DSA keys
ii  openssh-blacklist-extra              0.4.1+nmu1                         all          list of non-default blacklisted OpenSSH RSA and DSA keys
ii  openssh-client                       1:6.0p1-4                          i386         secure shell (SSH) client, for secure access to remote machines
ii  openssh-server                       1:6.0p1-4                          i386         secure shell (SSH) server, for secure access from remote machines

sudo service ssh restart

port xx

Port xx

$ sudo netstat -ltnp | grep sshd
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      31565/sshd      

$ grep -i 'port' /etc/ssh/sshd_config 
Port 22

$ sudo sed -i 's/^Port 22/pOrT 222/' /etc/ssh/sshd_config

$ grep -i 'port' /etc/ssh/sshd_config 
pOrT 222

$ sudo /etc/init.d/ssh restart

$ sudo netstat -ltnp | grep sshd
tcp        0      0 0.0.0.0:222             0.0.0.0:*               LISTEN      31693/sshd