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Alain_Sanchez's avatar
Dec 15, 2023
Solved

GS724v4 switch MAC ACL NOT WORKING

I have a Netgear GS724Tv4 which I upgraded to the last firmware available (6.3.1.47). I want to use MAC ACLs to restrict access to the network to some specific PCs.  Went to ACL -> Basic and did the following:

 

1 - In MAC ACL tab created a rule named: Allowed_MACs

 

2 - Add this rule to Allowed_MACs rule in MAC Rules tab: 

    ID    Action         Match Every      Source MAC                Source MAC Mask        VLAN

    1     Permit         False                  74:D4:35:8E:66:F9      FF:FF:FF:FF:FF:FF        1 

 

3 - In MAC Binding Configuration Tab, applied Allowed_MACs (Inbound) to port...say 15

 

4 - Binding Table tab shows the following, as I guess should be:

Interface Direction       ACL Type        ACL  ID                   Sequence Number
g15         In Bound       MAC ACL       Allowed_MACs         1

Result:

No matter what I connect to port 15, traffic will be allowed when only PC with MAC 74:D4:35:8E:66:F9 should be allowed. 

Applied the same rule TO ALL PORTS except 24 where I have a linux terminal to test ping with and... same result. I can connect any PC to any port (1-23) and linux box on port 24 still respond to ping.

 

Note: Tried another switch (same model) with an older firmware version and the same happens.

 

Any Idea?

Thnx!!

  • Review the Source MAC, especially the meaning of the Source MAC Mask:

     

    Source MAC. Requires a packet’s source port MAC address to match the address listed here. Enter a MAC address in this field. The valid format is xx:xx:xx:xx:xx:xx.

    Source MAC Mask. If desired, enter the MAC mask for the source MAC address to match. Use Fs and 0s in the MAC mask, which is in a wildcard format. An F means that the bit is not checked, and a 0 in a bit position means that the data must equal the value given for that bit. The valid format is xx:xx:xx:xx:xx:xx. A MAC mask of 00:00:00:00:00:00 matches a single MAC address.

1 Reply

  • schumaku's avatar
    schumaku
    Guru - Experienced User

    Review the Source MAC, especially the meaning of the Source MAC Mask:

     

    Source MAC. Requires a packet’s source port MAC address to match the address listed here. Enter a MAC address in this field. The valid format is xx:xx:xx:xx:xx:xx.

    Source MAC Mask. If desired, enter the MAC mask for the source MAC address to match. Use Fs and 0s in the MAC mask, which is in a wildcard format. An F means that the bit is not checked, and a 0 in a bit position means that the data must equal the value given for that bit. The valid format is xx:xx:xx:xx:xx:xx. A MAC mask of 00:00:00:00:00:00 matches a single MAC address.

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