Linux/UNIX: Configure OpenSSH To Listen On an IPv6 Address

How do I enable OpenSSH SSH server to listen on an IPv6 address under Linux or UNIX operating systems?

The ListenAddress directive in sshd_config file specifies the local addresses sshd should listen on. The syntax is as follows:

ListenAddress host
ListenAddress IPv4_addr:port
ListenAddress [IPv6_addr]:port

Edit /etc/ssh/sshd_config file, enter:
# vi /etc/ssh/sshd_config
To bind sshd to every IPv4 and IPv6 address on your server, enter:

ListenAddress 0.0.0.0
ListenAddress ::

To bind sshd to every IPv6 2607:f0d0:1002:11::2 address on your server, enter:

ListenAddress [2607:f0d0:1002:11::2]

To bind sshd to every IPv6 2607:f0d0:1002:11::2 address and port 311 on your server, enter:

ListenAddress [2607:f0d0:1002:11::2]:311

From the sshd_man page:

If port is not specified, sshd will listen on the address and all prior Port options specified. The default is to listen on all local addresses. Multiple ListenAddress options are permitted. Additionally, any Port options must precede this option for non port qualified addresses.

Save and close the file. If you changed the port, update your iptables or pf firewall configuration. Finally, reload sshd:
# service sshd reload

Was this answer helpful?

 Print this Article

Also Read

Yum issues with low memory plans (Resolution)

If you are getting yum errors on our 128 or 192 yearly plans with the CentOS/Fedora distro then...

Delete SSH Keys

Linux Lock An Account # passwd -l userName # passwd -l vivek FreeBSD Local An Account # pw...

tcpdump: Monitor ALL eth1 Traffic Except My Own SSH Session

I'm using tcpdump to dump, debug and monitor traffic on a network. However, there is lots of...

How do I Find Out Linux CPU Utilization?

Top command to find out Linux cpu usage Type the top command: $ top   Output:

mod_setenv: Lighttpd Send Custom Headers

How do I add a header to the HTTP request that was received from the client under Lighttpd web...