Excluding external referrers prevents them from being displayed anywhere on your site.
There are two instances where you may want to do this:
1. If you are running a Confluence installation that is open to public:
In a site that is open to public, one unfortunate problem is that malicious sites can "spam" a page's incoming links statistics. This is usually done to get the site's URL to appear in the sidebar. By adding these sites to the 'excluded referrers' list, you can prevent them from being listed on your site.
2. If Confluence is installed on a server with multiple domain names or IP addresses:
Confluence will consider any url originating from the domain name where Confluence is installed as an internal link. However, if Confluence is installed on a server with multiple domain names or IP addresses, you will need to add the other domain name prefixes to this list to let Confluence know that any links from these domains should not be considered external links.
You need to be a site administrator and know the url of the site to add it to the excluded referrers list.
To add a url to the excluded referrers list,
- Go to the Administration Console and click on 'Manage External Referrers' in the left panel.
- Add the URL to the 'Excluded External Referrer Prefixes' section. You must include 'http://' at the front of the URL.
You can add more than one url by separating each new url with a new line.
Once saved, all incoming links URLs that match the blocked list will no longer be recorded. Referrer URLs are blocked if they start with any of the URLs in the exclusion list. So http://evilspamsite.blogspot.com will also match http://evilspamsite.blogspot.com/nastypage.html
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