LOG entries indicating possible DNS -rebind attack

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ramblin
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Location: Florida, USA

PostPosted: Thu Jun 12, 2025 23:31    Post subject: LOG entries indicating possible DNS -rebind attack Reply with quote
Recently, about 4 different IPs began showing up in my logs as "possible DNS-rebind attacks". This is a sample of 2 of them. In the beginning I would see several pages of this. I went to "Access Restrictions" and blocked all 4 by URL. Most have stopped but a few like this still manage to show up every day. I`m certain this was self-inflicted as one site ties to a VOIP phone I was using that I installed 3rd party software on to extend its life. I have since replaced the phone with an upgraded model. Is this something to be concerned about or nothing at all? I`m using WPA2 personal with AES and SPI firewall enabled.


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kernel-panic69
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Joined: 08 May 2018
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Location: Texas, USA

PostPosted: Fri Jun 13, 2025 0:25    Post subject: Reply with quote
As it clearly shows in the log entries, it's dnsmasq, not the firewall. Looks like IoT crap. It's up to you whether to block the domains or to add rebind-domain-ok= lines to your dnsmasq configuration. Pretty sure these things have been discussed before somewhere in the forum...
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