5G Whitelisting

The whitelist maps are configured per GigaSMART group. Each whitelist map, associated with the same vport, uses the same underlying whitelist.

Up to ten (10) whitelist maps are supported. Multiple whitelist maps provide a granular selection of tool ports for whitelisting. Using multiple maps, traffic can be segregated and sent to multiple destinations. Whitelist map rules allow you to select the subset of SUPIs sent to a particular tool.

Each whitelist map can contain up to four rules. The rules specify the type of traffic to be whitelisted by that map. Within any single map, the rules are evaluated in order. The rules in the first map have a higher priority than the rules in the second, third, and subsequent maps.

The rules are specified based on the Data Network Name (DNN). A DNN can be specified in a rule of a Second Level Flow Whitelist map. 5G Whitelist map contains only DNN specific filters.

For DNN, you must specify a pattern (a name) to match. Use DNN to direct the traffic that matches the pattern to a specific tool.

A DNN pattern is for example, three.co.uk. Wildcard prefixes and suffixes are supported, for example, *mobile.com or *ims*. The pattern can be specified in up to 100 case-insensitive alphanumeric characters and can include the following special characters: period (.), hyphen (-), and wildcard (*). A standalone wildcard (*) is not allowed for DNN.

Each new subscriber session will be evaluated by the whitelist maps in the order of priority, which, by default, is the order in which the maps were created.

When a subscriber session comes in, 5G whitelisting will check the SUPI of the subscriber. If the SUPI is present in the whitelist, the rules in the first whitelist map is evaluated to qualify the match further. Otherwise, the packet is evaluated against the rules in the subsequent whitelist maps for a possible match.

Note:  Both maps can specify the same destination.

Rules can be added to, or deleted from, a whitelist map. Use the Add a Rule button to add a new whitelist rule (a pass rule). Click x to delete a rule. A rule in a whitelist map cannot be edited. To edit a rule, first delete it, then recreate it.

The default map configuration DNN specified in the map, continues to be supported. If the incoming SUPI matches an SUPI in the whitelist, the session will be sent to the tool port, GigaStream, or Load Balancing group specified in the whitelist map. Whitelist maps cannot contain any other rules such as GigaSMART rules (gsrule), flow filtering rules (flowrule), or flow sampling rules (flowsample).

5G whitelist-based forwarding is performed prior to 5G flow sampling (rule-based flow sampling) and 5G flow filtering.

Note:   For 5G second level maps, a maximum of fifteen maps can be attached to a vport. For example, for the same vport you can have five whitelist maps and ten flow sampling maps, or ten whitelist maps, and five flow sampling maps. In addition, you can have a collector map, which is not counted.

Whitelist maps cannot contain any other rules such as GigaSMART rules (gsrule), flow filtering rules (flowrule), or flow sampling rules (flowsample).

Priority is set as per the order defined in the policy YAML file within the type.

When a whitelist map is deleted, the priority of the remaining whitelist maps are re-prioritized.

For example, if the first whitelist map is deleted, the second whitelist map increases in priority.

For the deleted whitelist map, the traffic associated with the rules in the map is reevaluated and then passed to subsequent maps.

When a whitelist map is re-prioritized, the existing sessions are reevaluated according to the new priority of the map. The traffic associated with the rules in the map are reevaluated and then passed to subsequent maps.

When the last whitelist map is deleted, the traffic associated with the rules in the map is also reevaluated before being passed to subsequent maps. But the traffic associated with the rules in maps that were not matched, are not reevaluated because that traffic was already passed to subsequent maps.

When a single whitelist entry is added, whitelisting is applied for new as well as existing subscribers.

When a new whitelist file is fetched, whitelisting is applied only for new subscribers.

Whitelisted traffic is then sent to the port or load balancing group specified in the whitelist map.

Entries in the whitelist can be deleted one at a time. Each entry is a single SUPI.

When a whitelist entry is deleted, the session associated with the whitelist entry stays active and traffic is still sent to the whitelist map. The whitelist session is not reevaluated or passed to subsequent maps.

To delete a single entry from the whitelist, select Individual Entry Operation, refer to Delete GTP Whitelist Maps in GigaSMART GTP Whitelisting and GTP Flow Sampling