To set Maven Proxy : Edit the proxies session in your ~/.m2/settings.xml file. If you cant find the file, create one or Edit the proxies session in your {M2_HOME}/conf/settings.xml

settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings>
   <proxies>
      <proxy>
         <id>httpproxy</id>
         <active>true</active>
         <protocol>http</protocol>
         <host>your-proxy-host</host>
         <port>your-proxy-port</port>
         <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
      </proxy>
      <proxy>
         <id>httpsproxy</id>
         <active>true</active>
         <protocol>https</protocol>
         <host>your-proxy-host</host>
         <port>your-proxy-port</port>
         <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
      </proxy>
   </proxies>
</settings>