Wondering how to setup Apache2 allow from IPV6? Our in-house experts are here to help you out with this article. Our server management services is here to offer a lending hand with your queries and issues.

Apache2 allow from IPV6

Most of the CDN like Cloudflare, SUCURI, AKAMAI let you enable IPv6 from their edge network.

However, if you are not using CDN that provides IPv6 and needs to enable your website, then here is how you can do it.

Before enabling the IPv6, you need to know the IPv6 address. There are multiple ways to locate the IPv6 in Linux/CentOS.

Using ifconfig

You can use ifconfig with grep inet6 to find the address

[root@chandan conf]# ifconfig |grep inet6
        inet6 2400:6180:0:d0::1f33:d001  prefixlen 64  scopeid 0x0<global>
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
[root@chandan conf]#

Using IP Show

[root@chandan conf]# ip -6 addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
    inet6 2400:6180:0:d0::1f33:d001/64 scope global 
       valid_lft forever preferred_lft forever
[root@chandan conf]#

So now you know your server IPv6 address.

Enable IPv6 in Apache HTTP Server

Assuming you have installed Apache, and it’s up and running.

• Go to the conf folder (default installation location would be /etc/httpd/conf)
• Take a backup of httpd.conf file
• Add the Listen directive with the port number

Listen [2400:6180:0:d0::1f33:d001]:80

Note: ensure to put IPv6 in the square box.

• Restart the Apache HTTP server

service httpd restart

[root@chandan conf]# netstat -anlp |grep 80
tcp        0      0 139.59.227.20:80        0.0.0.0:*               LISTEN      23047/httpd         
tcp6       0      0 2400:6180:0:d0::1f33:80 :::*                    LISTEN      23047/httpd         
unix  2      [ ACC ]     STREAM     LISTENING     14080    1091/master          public/qmgr
[root@chandan conf]#

And, as you can see the second line starting with tcp6.

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Conclusion

In this article, we provide a quick and simple solution from our Support team to setup Apache2 allow from IPV6.