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Strange issue on HA firewall: packets missing

Hi all,

we have on our WAN interface an additional IP address (Alias ). For this IP are 2 DNS Hostnames registered. On firewall runs a Reverse Proxy on the Alias IP. We did not see any issues when the users access Hostname1. Some users reports, that Hostname2 is not reachable (on the same IP).

I tested it with a ping test, if I ping Hostname1 and the IP address itself, I see on firewall an ICMP echo request and the firewall answers with an ICMP echo reply. So far, so good. If I ping Hostname2 I did not see any ICMP echo requests on the firewall.

The same issue we had with the https requests, Requests for Hostname1 go the the firewall and https Requests for Hostname2 will not go to the (active) firewall.

Our firewall run on SFOS 19.5.

Has anybody an idea?

Ben



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