IP address of incoming load balance pool
can I use the public IP address for an incoming load balance pool, as same as the pfSense's public IP?
i've got only one IP from service provider and needed to have incoming load balance for mail servers.
yes you do need to use the public ip you got - you do not need any extra ip addresses. you are probably confusing the load balancer with CARP/failover.
the function of the loadbalancer is to decide where to send an incoming connection. it doesnt need extra ip addresses for that.