IPv6 and Security

If you enable IPv6 it is like you have 2 servers in 1. It doubles your work as an administrator. If you don't have many people/visitors that need IPv6 it is easier (and less error-prone) to have that disabled and just offer IPv4 access.

 

Example if you don't know how to setup your firewall for both ipv4 and ipv6 and understand the differences in vulnerabilities/exploits, etc... it could cause a security issue.

 

You honestly don't need it and yea CSF comes with a fairly robust configuration but things change and exploits pop up when you're not paying attention at least that's what happens to me.

 

IMHO IPv6 can be used for live sites and -if all has been done correctly- won't be a source for technical problems at servers with any current OS.

However, many admins are not used to IPv6 and therefore it is more likely to run into problems with it. Inside and outside your own server. It generates more work for server admins which is not worth it currently because you don't have any advantage if you offer IPv4 and IPv6 access to your server.

If you have IPv4 connectivity you most likely will never be forced to switch to IPv6 as a server admin. There won't be a global deactivation of the IPv4 network ever. The only problem is that some times in the future you won't get new servers with IPv4 any more. This is when you have to use and to deal with IPv6.

 

It's always good to learn...

Since each provider has its own pool of IPv4 addresses there may be providers in the future who have and who have not IPv4 addresses. I also assume that most providers will add a special price tag to even the first IPv4 address in the future (most already charge high for additional IPv4 addresses). It will soon pay to know how to use IPv6 (or to stay with an already IPv4 connected server).

 

Definitely, learn if you're up for it because nobody has ever gone wrong educating themselves and enhancing their knowledge and skillset.