5G Multi-access Edge Computing Security

Enable GTP Security, commit your changes, and reboot.
If you enable stateful inspection for PFCP traffic, the following options are not available:
IMSI/APN/RAT filtering
GTP-U tunnel limiting
GTPv1-C stateful inspection
GTPv2-C stateful inspection
5G-HTTP2 for 5G-C
End User IP Address Spoofing for GTP-U
Similarly, if you enable GTPv1-C stateful inspection, GTPv2-C stateful inspection, or 5G-HTTP2 for 5G-C, PFCP stateful inspection is not available.
Create a Mobile Network Protection Profile and enable 5G Multi-access Edge Computing Security.
Select

Objects

Security Profiles

Mobile Network Protection

.

Add

a profile and enter a

Name

, such as

5G Multi-access Edge Computing Security

.

On the

PFCP

tab, enable

Stateful Inspection

.


Select which state checks you want the firewall to perform on PFCP traffic and the action you want the firewall to take if a state check is not successful.
Determine the state checks you want to use.
Check Association Messages
—Checks for any PFCP association messages that are out of order or that have been rejected.
Check Session Messages
—Checks for any PFCP session messages that are out of order or that have been rejected.
Check Sequence Number
—Confirms that the sequence number in the PFCP matches the sequence number in the PFCP request message.
Select the action you want the firewall to take if a state check is not successful.
allow
—Allow the traffic and do not generate a log entry in the GTP log.
block
—Block the traffic and generate a high-severity log entry in the GTP log.
alert
—(Default) Allow the traffic and generate a high-severity log entry in the GTP log.
(Optional) Configure logging for PFCP traffic.
Select when you want the firewall to generate a log entry.

Log at PFCP association start
Log at PFCP association end
Log at PFCP session start
Log at PFCP session end

On the

Other Log Settings

tab, select the type of

PFCP Allowed Messages

you want to include in the logs.

Session Establishment
—These PFCP messages set up the session, including establishing the GTP-U tunnel.
Session Modification
—These PFCP messages are sent if the session ID or PDR ID changes (for example, as a result of moving from a 4G to a 5G network). It includes messages such as PFCP Session Modification Request and PFCP Session Modification Response.
Session Deletion
—These PFCP messages terminate the PFCP session, including releasing associated resources.


Click
OK
.
Create a Security policy rule that applies your Mobile Network Protection profile to PFCP traffic by selecting the
Mobile Network Protection
profile you created.
Create another Security policy rule based on equipment ID, subscriber ID, or network slice.
Commit
your changes.