ayrıca 41 ip nolu makine için sürekli şu hatayı veriyor

Description: The number of concurrent TCP connections from the source IP address 192.168.17.41 exceeded the configured limit. As a result, ISA Server will not allow the creation of new TCP connections from this source IP.
This IP address probably belongs to an attacker or an infected host.

See product documentation for more info about ISA flood resiliency.