Preparing Network

When planning your Genian NAC Deployment onto your network there are several considerations.

  • Where should the equipment be placed?
  • How will it connect to my switches?
  • How many pieces of equipment do I need?
  • What ports do I need to open for Genians to communicate?

Wired Connectivity

The Policy Server should be directly connected to your Core Switch port as an access port. The Network Sensor should be connected to an Edge Switch port that can be an access port, or trunk port.

Switches

Network Sensors must be able to see broadcast packets, so they must be connected to all managed subnets.

VLANs

To monitor multiple VLANs (up to 128) through a single port, make sure the switch port is configured with 802.1Q trunking and that all VLANs you wish to monitor are allowed on that port.

Switches differ in how to configure this setup.

Below are examples of how to configure 802.1Q Trunk ports for VLANs on common switches. In these examples, we will show how to add VLANs 100 and 200 to port 48, configured with .1q trunk encapsulation.

Cisco Switch

Cisco(config)#interface gi1/0/48
Cisco(config-if)#switchport trunk encapsulation dot1q
Cisco(config-if)#switchport mode trunk
Cisco(config-if)#switchport trunk allowed vlan add 100,200

HP Switch

Procurve(config)#vlan 100
Procurve(config)#tagged 48
Procurve(config)#vlan 200
Procurve(config)#tagged 48

SNMP

Genians supports SNMP Versions 1, 2c and 3. The read-only community string is used to check whether the node supports SNMP in the process of collecting information about the Node by the network sensor. If the node responds to an SNMP request, the sensor verifies that the node is a switch by verifying that it supports the BRIDGE-MIB through an SNMP query. The read-write community string is used to make changes to the switches for port descriptions and shutting down switch ports. In addition, it can be used for various additional functions such as collecting information of wireless controller using SNMP, detecting platform information of device.

Note

Be sure to add the Network Sensor to the access-lists of all switches in the same network segment, and assign necessary permissions for users/groups to view all OIDs. For more info see: Switch Ports

WAN

If you have more then one location behind WAN Technologies then a Network Sensor would be required at each of these locations.

Wireless Connectivity

Network Sensors with Wireless NIC is used to detect wireless packets and identify SSIDs that are both Internal to your network and External (Neighboring) to your network. Placement of the Network Sensor with Wireless NIC is critical as you do not want to place this in a Data closet where you will only detect Wireless SSIDs near the data closet. You will want to place the Network Sensor with Wireless NIC centrally to where you can detect the majority of the SSIDs around it.

Firewall Requirements

The following connections must be allowed for Genian NAC to function properly.

On-Premise

SRC IP DST IP Service Note
Policy Server IP www.genians.com (54.81.159.137) TCP/443 Sign-in to www.genians.com (On-Prem Only)
Policy Server IP geniupdate.geninetworks.com (52.78.17.154) techlab.geninetworks.com (222.121.135.252) TCP/80, TCP/443 GENIAN Data Update (On-Prem Only)
Policy Server IP d1s536j2uzv1h7.cloudfront.net (IP may vary) TCP/443 Download Updated Software Image (On-Prem Only)
Network Sensor IP Policy Server IP/FQDN UDP/3870, UDP/3871 TCP/80, TCP/443 UDP/514, TCP/6514 Keep Alive Update Information/Policy Syslog
PC IP (Agent) Policy Server IP/FQDN UDP/3870, UDP/3871 TCP/80, TCP/443, TCP/8000, TCP/3910 Keep Alive Update Information/Policy Windows Update
Management PC Policy Server IP, Network Sensor IP TCP/22 SSH Console

Note

GENIAN Data: It required to allow the On-Premise Policy Server to get weekly/monthly updates for the Platform Detection DB, CVE and NIC Vendors.

Cloud Managed

SRC IP DST IP Service Note
Network Sensor IP Policy Server IP/FQDN UDP/UNIQUE PORT, TCP/80, TCP/443 Keep Alive Update Information/Policy
PC IP (Agent) Policy Server IP/FQDN UDP/UNIQUE PORT, TCP/80, TCP/443, TCP/8000, TCP/3910 Keep Alive Update Information/Policy Windows Update
Management PC Network Sensor IP TCP/22 SSH Console

Note

UNIQUE PORT: Specific Port Info for the Cloud Managed Policy Server can be found in the Web Console by selecting System on the top panel, and then selecting Service > Port from the left menu bar.