Proxmox Backup not Work above Version 23.7.5

[it-nick]

Hello
since version 23.7.5, ProxMox virtualizers can no longer connect stably to ProxMox Backup Server on port TCP 8007. The first session is still allowed and before the first session is terminated, another connection is already established, which is terminated by the OPNSense with a TCP reset.
How can I adjust the TCP parameters of the concurrent TCP session to a port and/or a specific source IP?
Regards,
Nick

[itngo]

Did you ever solve this?
Same issue here....

[itngo]

Hello
since version 23.7.5, ProxMox virtualizers can no longer connect stably to ProxMox Backup Server on port TCP 8007. The first session is still allowed and before the first session is terminated, another connection is already established, which is terminated by the OPNSense with a TCP reset.
How can I adjust the TCP parameters of the concurrent TCP session to a port and/or a specific source IP?
Regards,
Nick

Is this with opnsense in HA mode?