# HALB

<table><thead><tr><th width="113">Source</th><th width="139">Destination</th><th width="116">Protocol</th><th width="101">Port</th><th>Description</th></tr></thead><tbody><tr><td>HALB</td><td>HALB</td><td>VRRP</td><td>112</td><td>HALB to HALB communication used for automatic assignment of VIP to active HALB.</td></tr><tr><td></td><td>RAS Secure Gateway in Forwarding Mode</td><td>TCP, UDP</td><td>80, 443</td><td>Management and user session connections.</td></tr><tr><td></td><td>RAS Secure Gateway in Normal Mode</td><td><p>TCP, UDP</p><p>TCP, UDP</p></td><td><p>80, 443</p><p>20009</p></td><td><p>Management and user session connections.</p><p>Device Manager shadowing via Firewall (indirect network connection).</p></td></tr></tbody></table>