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I'm seeing brute force web login attempts from 10.19.0.222 My iptables contains:

DROP all  --  anywhere anywhere match-set manual src

ipset test manual 10.19.0.222 confirms the address is in the set, but I continue to see the web login attempts from that address.

My iptables/ipset configuration is working perfectly for the many others addresses in the set, but seems ineffective with this 10. address.

Why is this?

And I thought 10. was reserved for private subnets. Why am I even seeing this address?

I have 3 interfaces:

eth0: inet addr:162.243.193.60  Bcast:162.243.193.255  Mask:255.255.255.0
lo: inet addr:127.0.0.1  Mask:255.0.0.0
tun0: inet addr:10.9.0.1  P-t-P:10.9.0.2  Mask:255.255.255.255

How can I determine which interface 10.19.0.222 came in on?

  • 1
    are you sure it is not your address? – Dusan Bajic Oct 22 '15 at 15:12
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It looks like it is from your LAN. Isn't it IP of your web server? 10.0.0.0/8 subnet is reserved for private using and is not routed on Internet at all (routers should drop packets with this IPs going to public Internet).

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