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udp 20 128 192.168.0.1 255.255.255.255 67 68 (spoofed source address). WatchGuard firewalls protect against entire classes of attacks and can recognize and block known attack behaviors such as port
scans, spoofing,. Cisco, Sonicwall, and Watchguard also offer this ability, but only with an. which identify users by source address and

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