How to add proxy connector in Apache Archiva
You have to configure the proxy connector in Apache Archiva in order to enable your newly added remote repository.
Configure proxy connector in Apache Archiva
1. Log in as admin to your Archiva server , e.g http://localhost:8888/archiva/
2. Click on the “Proxy Connectors” under Administrator group option
3. Click on the small “Add” link
4. Fill in the proxy connectors information
Network Proxy : Choose direct connection or proxy if you are using it Managed Repository : Say no to snapshots Remote Repository : Choose your remote repository here (JBoss from previous article)

5. Done
Reference
Proxy connectors – http://archiva.apache.org/docs/1.0.2/adminguide/proxy-connectors.html
[...] Configure proxy connector You have to configure the proxy connector in order to enable your newly added remote repository. [...]
[...] sure you configured the proxy connector in Apache Archiva as [...]