Did they blame you for breaking their cable when you hooked up to it? :) We had a customer who’s cat ate a switch power cord - they insisted it wasn’t their cat. We swapped it and the cat ate the new one shortly thereafter. Somehow I recall them thinking we caused it in some manner, their cat wouldn’t dare think of it apparently. Nevermind the other cat chew marks on surrounding areas.
> On Mar 22, 2021, at 12:28 PM, Mark - Myakka Technologies <m...@mailmt.com> > wrote: > > UPDATE > > I couldn't take the whining and crying about the VPN being down. Remote IT > guys 100% sure it is my issue (must be blocking port 443). Customer 100% I > changed something. So, I gathered my testing equipment and headed on out. > Well both IT guy and customer never mentioned that the VPN appliance is > connected to their router via a 100' CAT5e cable run on the floor across the > house. They did at least have it tape down in places. When I tried to > connect my notebook using the cable, I got no connection. Pulled out the old > CAT5 tester and only 3 or of 8 lit up. Replaced the cable and guess what, > VPN now working. > > > -- > Best regards, > Mark mailto:m...@mailmt.com > <mailto:m...@mailmt.com> > > Myakka Technologies, Inc. > www.Myakka.com <http://www.myakka.com/> > > ------ > > Thursday, March 18, 2021, 1:37:08 PM, you wrote: > > > I'm working a very similar issue right now. I think I have tracked it down > to an issue with a single upstream connection, and it looks like it's doing > something with fragmenting/dropping large packets. Doing a packet capture, > it looks like the VPN setup packet is about 2062 bytes in size, and it's not > getting to the other end. ICMP Packets will flow regardless of size (of > course fragmenting) If I route the traffic over any of my other upstreams, > it works fine. I have a ticket open with this upstream, but getting them to > understand what the issue is has been cumbersome. > On 3/18/2021 12:27 PM, Dev wrote: > > Do you have other customers with similar config/topology where you can test, > maybe who hit the same VPN server? PCAP’s aside, VPN’s don’t usually like NAT > and firewall changes, but you have to divide and conquer to track down VPN > issues often because the error reporting is vague at best typically. > > > On Mar 17, 2021, at 8:40 AM, Mark - Myakka Technologies <m...@mailmt.com > <mailto:m...@mailmt.com>> wrote: > > Re: [AFMUG] VPN issues > Bill, > > Well that is the issue. Could be anything. Been working fine since June. I > have many many more people using VPN's with no issues. > > But there is an issue on her link. This is a fiber link BTW. Her Internet > works fine. > > Her IT guys have washed their hands of it, pushing it all on me. Not sure > how I'm going to figure it out being I don't know what appliance she is using > yet. Even when I get that info, I'll have no access to it. Doubt they are > going to give me admin privileges on their equipment. Also, I don't get the > opportunity to see what errors are showing up on server logs. > > > > > -- > Best regards, > Mark mailto:m...@mailmt.com > <mailto:m...@mailmt.com> > > Myakka Technologies, Inc. > www.Myakka.com <http://www.myakka.com/> > > ------ > > Wednesday, March 17, 2021, 11:27:35 AM, you wrote: > > > I would suspect maybe segmentation issues. Sometimes segment boundaries can > mess with a VPN. > > bp > <part15sbs{at}gmail{dot}com> > On 3/17/2021 7:50 AM, Mark - Myakka Technologies wrote: > > I have a customer that has some type of VPN router device on our > system. Her VPN isn't working anymore. Her Internet is fine. I did > a packet capture for her IT guys and sent it to them. Their answer > is the usual "It's your ISPs fault". I'm not a VPN expert, but I > attached the filtered packet dump. Looks like things are talking back > and forth. Any issues anyone can see? > > > -- > > Thanks, > Mark mailto:m...@mailmt.com <mailto:m...@mailmt.com> > > Myakka Technologies, Inc. > www.Myakka.com <http://www.myakka.com/>-- > AF mailing list > AF@af.afmug.com <mailto:AF@af.afmug.com> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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