Re: Strange Alerts
"Al Lewis \(allewi\) via Snort-users" <[email protected]> Wed, 31 May 2023 20:47:46 +0000
| Newsgroups | gmane.comp.security.ids.snort.general |
|---|---|
| Message-ID | <BL3PR11MB5715E1110A91095AE72E898BDA489@BL3PR11MB5715.namprd11.prod.outlook.com> |
Look like IGMP traffic https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml Albert Lewis ENGINEER.SOFTWARE ENGINEERING SOURCEfire, Inc. now part of Cisco Email: [email protected]<mailto:[email protected]> ________________________________ From: Al Lewis (allewi) <[email protected]> Sent: Wednesday, May 31, 2023 4:45 PM To: Snort-users <[email protected]>; Jim Campbell <[email protected]> Subject: Re: [Snort-users] Strange Alerts Have you been able to look at the packets? Which options are set in the header? Albert Lewis ENGINEER.SOFTWARE ENGINEERING SOURCEfire, Inc. now part of Cisco Email: [email protected]<mailto:[email protected]> ________________________________ From: Snort-users <[email protected]> on behalf of Jim Campbell via Snort-users <[email protected]> Sent: Wednesday, May 31, 2023 2:42 PM To: Snort-users <[email protected]> Subject: [Snort-users] Strange Alerts I am running Snort 3.1.18.0 on Ubuntu 20.04. Snort is alerting on something I haven't seen before and I can't determine why. Two of the desktops on my home network are sending multicast messages to the external network and Snort is alerting on these messages. The source addressees are 192.168.1.19/25 The destination address is 224.0.0.22 The message is "(ipv4) IPv4 option set" _______________________________________________ Snort-users mailing list [email protected] Go to this URL to change user options or unsubscribe: https://lists.snort.org/mailman/listinfo/snort-users To unsubscribe, send an email to: [email protected] Please visit http://blog.snort.org to stay current on all the latest Snort news! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette _______________________________________________ Snort-users mailing list [email protected] Go to this URL to change user options or unsubscribe: https://lists.snort.org/mailman/listinfo/snort-users To unsubscribe, send an email to: [email protected] Please visit http://blog.snort.org to stay current on all the latest Snort news! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette