Let us take a closer look at ACL Domain exclusion HAProxy. With the support of our Server management support services at Bobcares we can give you a complete note of it.

what is ACL in ACL Domain Exclusion Haproxy

The word “ACL” refers to a collection of rules. A network device follows these rules, such as a load balancer or proxy server. This is to determine whether to permit or reject requests or traffic depending on certain situations.

We can use the ACLs in the context of HAProxy, a well known open source load balancer and proxy server, to establish rules for routing traffic to multiple backends based on incoming request attributes such as the URL, originating IP address, or HTTP headers.

An exclusionary domain HAProxy ACL is a sort of ACL that matches requests that do not belong to a certain domain or collection of domains.

This can be useful to remove traffic from particular domains that should not be load balanced or for routing traffic to a specific backend based on the request’s domain.

If we have a website that is serviced by numerous backend servers and we wish to prohibit traffic from a certain domain, such as an internal testing domain. With HAProxy, we might establish a domain exclusion ACL as follows:

This ACL matches requests with the domain “test.example.com” in the “Host” header. Using the -i option, the match is case-insensitive.

Then, in a backend definition, we can utilize this ACL to prohibit traffic from the given domain:

The use-server directive in this example works to send traffic matching the exclude domain ACL to a new backend named other backend. While all other traffic is sent to the default backend servers.

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Conclusion

To sum up, we have now gone through acl domain exclusion haproxy. With the support of our Server management support services, we have now gone through the whole set up process.