> Source: [sk112724](https://support.checkpoint.com/results/sk/sk112724)

# sk112724 - Updates For Anti-Virus/Anti-Bot/Application Control/URL Filtering blades are not working on standby ClusterXL member

| Property | Value |
|----------|-------|
| Solution ID | sk112724 |
| Date Created | 2016-08-02 |
| Last Modified | 2019-10-17 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Updates For Anti-Virus/Anti-Bot/Application Control/URL Filtering blades are not working on standby ClusterXL member.
* Kernel debug with drop flag `(fw ctl zdebug + drop)` on active Cluster member shows the following drop:  
  `dropped by fwpslglue_chain Reason: PSL Reject: failover occurred and connection is marked for reject;`  
* `"fwha_forw_packet_to_not_active"` kernel parameter is set to **"1"** according to the [sk97587](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk97587), but the issue is still present.
* Not able to apply [sk43807](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk43807) as only VIP is public, but physical IP addresses of the cluster members are private.

## Cause

**Environment:** Failover Behavior for IPS blade is set to "Prefer Security".

IPS information for most protocols is not synced between the members. For this reason, if a failover occurs, it is more secure to drop this connection rather than keep it.

In other words, when a failover happens between the members, the new active member doesn't have the data the IPS engine collected so far about this connection. If, for example, an attack took place on a certain connection and divided into 4 packets, and 3 were accepted on the first active member. At this point a failover occurs, the new active member will not have the data of the first 3 packets but only receive the 4th packet, hence it will be more secure to terminate the connection rather than keep it alive.

## Solution

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