ZyXEL Communications P-202 - Manual (Page 78)

P-202H Plus v2 Support Notes
- Checksum: 0x455C
- Identifier: 768
- Sequence Number: 1280
- Optional Data: (32 bytes)
• Configurations
From the above first trace, we know that a client is trying to ping the P-202H Plus
v2 router. And from the second trace, we know that the P-202H Plus v2 router
will send a reply to the client accordingly. The following sample filter will utilize
the 'Generic Filter Rule' to block the MAC address [00 80 c8 4c ea 63].
1. First, from the incoming LAN packet we know that the unwanted source MAC
address starts at the 7th Octet
TIME: 37c060 enet0-RECV len:74 call=0
0000: [00 a0 c5 01 23 45] [00 80 c8 4c ea 63] 08 00 45 00
0010: 00 3c eb 0c 00 00 20 01 e3 ea ca 84 9b 5d ca 84
0020: 9b 63 08 00 45 5c 03 00 05 00 61 62 63 64 65 66
0030: 67 68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76
0040: 77 61 62 63 64 65 66 67 68 69
2. We are now ready to configure the 'Generic Filter Rule' as below.
Menu 21.1.1 - Generic Filter Rule
Filter #: 1,1
Filter Type= Generic Filter Rule
Active= Yes
Offset= 6
Length= 6
Mask= ffffffffffff
Value= 0080c84cea63
More= No Log= None
Action Matched= Drop
Action Not Matched= Forward
Key Settings:
• Filter Type: Set the 'Filter Type' to 'Generic Filter Rule'.
• Active: Turn 'Active' to 'Yes'
• Offset (in bytes): Set to '6' since the source MAC address starts at 7th
octets we need to skip the first octets of the destination MAC address.
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• Length (in bytes): Set to '6' since MAC address has 6 octets.