Funny story, we keep getting these emails for a different ASN. We have some unrelated IPs SWIPed to us from them but BYU thinks we're a valid contact because we show up in https://ip-netblocks.whoisxmlapi.com
On Tue, Oct 13, 2020 at 8:48 AM Larry Smith <[email protected]> wrote: > At this point in time I have absolutely zero ipv6 in my network > and yes, it is filtered (completely) at my border. And most > definitely none of my DNS servers are listening on v6. > > -- > Larry Smith > [email protected] > > On Tue October 13 2020 10:18, Mark Radabaugh wrote: > > I believe this was specific to IPv6. Are you sure you are filtering > IPv6 > > and not just IPv4? > > > > Mark > > > > > On Oct 13, 2020, at 8:51 AM, Larry Smith <[email protected]> wrote: > > > > > > Hmmmmm, got one yesterday, then three more this morning. > > > They appear to be going down my AS contact list - one this morning > > > was to "abuse". They are now blocked here. > > > > > > All four advertising their DSAV - Destination-Side Source Address > > > Validation. > > > > > > And I have had filters blocking my IP from outside my network for over > 20 > > > years. Also block anything leaving my network that is not my IP (and > log > > > it). > > > > > > -- > > > Larry Smith > > > [email protected] > > > > > > On Mon October 12 2020 22:57, John Osmon wrote: > > >> On Mon, Oct 12, 2020 at 05:49:18PM -0400, Mark - Myakka Technologies > > >> wrote: [...] > > >> > > >>> I can not think of any > > >>> valid reason for someone to spoof my IP on incoming packets. > > >> > > >> There are some asymmetrical cases where you may see your own addresses > > >> coming in over an edge router. Most of them are solved better with > > >> VPNs, but they do exist. > > >> > > >> There are few cases anymore where not following BCP38 is required... > > > > > > -- > > > AF mailing list > > > [email protected] > > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
