Automatically block IP on firewall box from snort IDS

[ML mail <mlnospam () yahoo com>]

Hello,

I have a network configuration where I run snort separately on a dedicated Linux box and have therefore another OpenBSD 
box which is dedicated to the firewall task. Now because these two security tasks are not on the same physical machine 
I was wondering how can I automatically block on my OpenBSD firewall specific events which happens on my snort box?

For example, I see some brute force SSH login attemps to my network coming from a specific external IP. Here I would 
like to block that external IP on my OpenBSD firewall for let's say 1 hour. What would be the best solution to do that?

Thanks for your suggestions.

Best,
ML

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