My DFL 800 doesn't work with a server on my lan; on the Lan there are 30 pc and 8 server and only one has this problem; on the log I find this message, if I ping from the server to the firewall:
invalid_arp_sender_ip_address
the server doesn't ping the firewall but the firewall ping the server; I'm sure thre aren't replicate IP on the LAN.
Thanks!