PROXY_LISTEN = '((RE:IPADDR)|(RE:FW_NET_IP)):(RE:NUM_INT)'
             : 'Should be IP_NET_x_IPADDR or an IP address followed by a port.'
PROXY_ALLOW  = '(RE:IPADDR)|(RE:FW_NET_IP)|(RE:NETWORK)|(RE:FW_NET)'
             : 'Should be IP_NET_x_IPADDR or an IP address.'
PROXY_IP     = '()|(((RE:IPADDR)|(RE:FW_NET_IP)):(RE:NUM_INT))'
             : 'Should be IP_NET_x_IPADDR or an IP address followed by a port or empty.'
PROXY_AUTH   = '()|(.[^ :]*:.[^ ]*)'
             : 'Use format username:password for proxy authentication.'
PROXY_LEVEL  = '()|debug|info|notice|warn|err'
             : 'Use any of debug, info, notice, warn or err, only.'
TPROXY_LISTEN = '((RE:IPADDR)|(RE:FW_NET_IP)|any):(RE:NUM_INT)'
             : 'Should be IP_NET_x_IPADDR, an IP address or "any" followed by a port.'