Enhanced sase network processing node high availability
Various techniques for enhanced SASE network processing node (NPN) IPSec high availability are disclosed. In some embodiments, a system, a process, and/or a computer program product for enhanced SASE NPN IPSec high availability includes monitoring a plurality of secure tunnels at an active network processing node (NPN); synchronizing periodically from the active NPN to a standby NPN; and processing each of the plurality of secure tunnels at the standby NPN using a predicted sequence number for an anti-replay sequence window for each of the plurality of secure tunnels after a failover event from the active NPN to the standby NPN.
1 . A system, comprising:
a processor configured to:
monitor a plurality of secure tunnels at an active network processing node (NPN);
synchronize periodically from the active NPN to a standby NPN; and
process each of the plurality of secure tunnels at the standby NPN using a predicted sequence number for an anti-replay sequence window for each of the plurality of secure tunnels after a failover event from the active NPN to the standby NPN, wherein the active NPN and the standby NPN are associated with a Secure Access Service Edge (SASE) network, wherein the SASE network includes a plurality of security processing nodes (SPNs), and wherein branch flows are assigned by a load balancer for security processing at one of the plurality of the SPNs; and
a non-transitory memory coupled to the processor and configured to provide the processor with instructions.
2 . The system of claim 1 , wherein the predicted sequence number for the anti-replay sequence window for each of the plurality of secure tunnels is weighted for a recency bias.
3 . The system of claim 1 , wherein the SASE network includes the load balancer.
4 . The system of claim 1 , wherein the processor is further configured to:
periodically synchronize an IPSec sequence number for each of a plurality of branch flows from the active NPN to the standby NPN.
5 . The system of claim 1 , wherein the processor is further configured to:
periodically synchronize an IPSec sequence number for each of a plurality of branch flows from the active NPN to the standby NPN; and
periodically synchronize a security association (SA) for each of the plurality of branch flows from the active NPN to the standby NPN.
6 . A method, comprising:
monitoring a plurality of secure tunnels at an active network processing node (NPN);
synchronizing periodically from the active NPN to a standby NPN; and
processing each of the plurality of secure tunnels at the standby NPN using a predicted sequence number for an anti-replay sequence window for each of the plurality of secure tunnels after a failover event from the active NPN to the standby NPN, wherein the active NPN and the standby NPN are associated with a Secure Access Service Edge (SASE) network, wherein the SASE network includes a plurality of security processing nodes (SPNs), and wherein branch flows are assigned by a load balancer for security processing at one of the plurality of the SPNs.
7 . The method of claim 6 , wherein the predicted sequence number for the anti-replay sequence window for each of the plurality of secure tunnels is weighted for a recency bias.
8 . The method of claim 6 , wherein the SASE network includes the load balancer.
9 . The method of claim 6 , further comprising:
periodically synchronizing an IPSec sequence number for each of a plurality of branch flows from the active NPN to the standby NPN.
10 . The method of claim 6 , further comprising:
periodically synchronizing an IPSec sequence number for each of a plurality of branch flows from the active NPN to the standby NPN; and
periodically synchronizing a security association (SA) for each of the plurality of branch flows from the active NPN to the standby NPN.
11 . A computer program product embodied in a non-transitory computer readable medium and comprising computer instructions for:
monitoring a plurality of secure tunnels at an active network processing node (NPN);
synchronizing periodically from the active NPN to a standby NPN; and
processing each of the plurality of secure tunnels at the standby NPN using a predicted sequence number for an anti-replay sequence window for each of the plurality of secure tunnels after a failover event from the active NPN to the standby NPN, wherein the active NPN and the standby NPN are associated with a Secure Access Service Edge (SASE) network, wherein the SASE network includes a plurality of security processing nodes (SPNs), and wherein branch flows are assigned by a load balancer for security processing at one of the plurality of the SPNs.
12 . The computer program product of claim 11 , wherein the predicted sequence number for the anti-replay sequence window for each of the plurality of secure tunnels is weighted for a recency bias.
13 . The computer program product recited in claim 11 , wherein the SASE network includes the load balancer.
14 . The computer program product recited in claim 11 , further comprising:
periodically synchronizing an IPSec sequence number for each of a plurality of branch flows from the active NPN to the standby NPN.
15 . The computer program product recited in claim 11 , further comprising:
periodically synchronizing an IPSec sequence number for each of a plurality of branch flows from the active NPN to the standby NPN; and
periodically synchronizing a security association (SA) for each of the plurality of branch flows from the active NPN to the standby NPN.