• caglararli@hotmail.com
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Snort false positive, yet suspicious

Çağlar Arlı      -    10 Views

Snort false positive, yet suspicious

I have Snort installed and tuned nicely with ET Rules on my pfSense, both my pfSense and the modem are using Googles public DNS 8.8.8.8.

Recently I was denied access to google.com, and by reviewing the logs, I found the following records in the blocked list for the same IP:

  • ET INFO Possible Chrome Plugin install
  • SENSITIVE-DATA Credit Card Number

I did suppressed the offending IP for further investigation which revealed it's one of my ISP IPs with ports 80,443 and OS Fingerprint CPE: cpe:/o:freebsd - nmap tells.

A traceroute to the offending IP ends on hop 10 with a virtual/private IP, apparently a router in the AS system of my ISP with transparent proxy "?"

Later on I tried to access the offending IP from my web-browser and I got redirected to google.com.mycountry

Now I'm confused. Could this be a Snort false positive? Is there anything i should be worried about?