Zyxel Switch with Wazuh SIEM

Teooo43

Hi guys, I need to make wazuh able to integrate with Zyxel switches. Is there already any guide/discussion about this?

monkeynia

Hi @Teooo43,

Do you mean the Wazuh SIEM setup guide or its user guide?

I think you can find it on its forum or you can find these information on google.

Teooo43

There's nothing in the setup guide or google... The community told me that I have to create decorders and rules for the Zyxel's log using regex but I don't know the structure of the logs

monkeynia

Teooo43 said:

There's nothing in the setup guide or google... The community told me that I have to create decorders and rules for the Zyxel's log using regex but I don't know the structure of the logs

I found this installation guide, have you try this before?
 https://documentation.wazuh.com/current/installation-guide/index.html

Zyxel_Melen

Hi @Teooo43,

Could you share what model are you using?
Also, could you share some screenshots of what setting you are stuck on?

zyman2008

Hi @Teooo43,
First, you need to make sure the switch model you get support send syslog to your Wazuh SIEM server.

Then, you can go to GUI of the switch to check log message that your want to monitor.
Copy log message from switch GUI and paste it to the wazuh-logtest to go through the default decoder. 
https://documentation.wazuh.com/current/user-manual/ruleset/ruleset-xml-syntax/decoders.html

Then, Add/Edit your custom ruleset and decoder on Wazuh server if needs.
https://documentation.wazuh.com/current/user-manual/ruleset/custom.html

After you finish the decoder/rulesets, 
Configure the log category and log facility on the switch to send that would like to send to SIEM server.
Usually, system & AAA category could be the basic set you need.
To monitor system hardware events, configuration change activities, admin login activities.
Here a forum post that you can reference, 
https://community.zyxel.com/en/discussion/787/gs2210-24-syslog-server

Most of people thinks, open source is cost free. 
But I would say, it's most expensive that you need to DIY.

I don't think Zyxel has strong community members with good programing skill and can contribute templates of popular open source packages, compare to community of Mikrotik/Ubiquiti.
So you might need to study the Wazuh guide to add the custom decoder/ruleset.

Zyxel_Melen

Hi @zyman2008,

Thanks for sharing great information with us!

Hi @Teooo43,

Looks like zyman2008 provide the solution for you, is there any other problem?
If yes, free feel to ask here.