Updating deny acl mac list during runtime

Eli Balta eliba86 at gmail.com
Sun Nov 29 02:36:45 PST 2015

Hi Jouni,

I have managed to solve my problem.
I was working with hostapd v2.1 which does not have such a feature.
After looking at the code in hostapd v2.5, I've noticed after that
adding "-" before a mac entry in the deny file and then issuing the
"SET deny_mac_file" command, the entries actually do get removed from
the acl table.

On Sun, Nov 29, 2015 at 11:20 AM, Jouni Malinen <j at w1.fi> wrote:
> On Sun, Nov 22, 2015 at 09:50:15PM +0200, Eli Balta wrote:
>> I need to be able to dynamically add and remove hosts from the mac
>> filter list depending on various events.
>> What I'm doing right now is:
>> 1) add/remove mac entry in /etc/hostapd.deny
>> 2) send "SET deny_mac_file /etc/hostapd.deny" to the ctrl iface at
>> /var/run/hostapd/...
>> The problem:
>> This works only for adding entries to the list, if I remove an entry
>> and send the "SET deny_mac_file /etc/hostapd.deny" command, it
>> succeeds, but the STA is still denied authentication whenever it tries
>> to connect.
>> Is there any way to solve this problem without having to make
>> modifications to the code?
> If you do not want to stop and restart the BSS to do this, then probably
> not. There was a recent patch to add a new control interface command for
> adding MAC ACL entries and something similar would likely need to be
> added to remove MAC ACL entries to cover the case you describe here.
> --
> Jouni Malinen                                            PGP id EFC895FA

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