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It looks like Meraki GP is blocking traffic to an "allowed" URL simply because of trailing space in the "host" field of a GET request. The request is otherwise legit. Putting it here not to seek solutions - but in case it's indeed a bug (undocumented...
I am hoping it's something simple. Getting "DHCP problem" type 'extra: no_offers_received, vap: 0, vlan: 255' errors in Meraki on VMs set to that VLAN 255. All other VLANs - no issue, with VMs getting their DHCP IPs just fine.The vSwitch is set up ju...
A number of our older MX devices (MX64 and MX100) got flagged with "Firmware status: critical". The "critical" part: what is it about?something specific the firmware updates are addressing (like zero day vulnerabilities)just the fact that the devices...
What do "bursts" of port disconnects and reconnects signify or mean, as opposed to single such events?(Can't wrap my mind around the idea that multiple port disconnects and reconnects can happen all within one second, and several series of such disco...
A very weird issue with Meraki MS120-48LP starting to report "MAC address flapping" on multiple wired ports.I can't yet make sense of it. Suspecting incompatibility between the switch and the NIC or a bug somewhere.Anything I can do to zero in on the...
This is a bug, and a bad one: Meraki not complying with basic RFC 7230 / RFC 9112 rules and blocking legitimate allowed traffic.No solution or a workaround from what I can tell.POC: format an http request with the "Host" value in the headers containi...
My bad, grabbed the wrong one. Not in front of work computer right now but putting this in Wireshark filter finds these GET requests:http.request && frame matches "Host: [a-zA-Z0-9\\.]+\\s\\r\\n" I.e. the character matches regex \s.These requests (an...
If it was an unprintable character:would the request go through to the destination if allowed - or fail because it's malformed or to an invalid URL?would "Full request" in Wireshark still look this way? (no spaces, no weird characters: "[Full request...
@EJN1 wrote:As others pointed out, there is no need for these, but just in case you want to explore this option:https://www.amazon.com/dp/B0060RUVBA/Great idea - thought about these, too; have you tried them? Will Meraki switches fit between those ra...
... and then on top of it there are earthquakes, nearby rail tracks and landing strips (both causing vibration in the building) and rogue technicians using the backs of Meraki switches as step ladders. We have it all. It's wild west, after all, the c...
