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WiFi without internet on a Southwest flight

jamesbvaughan.com

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Re: WiFi without internet on a Southwest flight

#661

Post by politelemon »

KMnO4 wrote: post #214
commandlinefan wrote: post #205

When my son was younger - maybe 9 or 10 or so, we were on a plane and he was using his phone and I looked over his shoulder and realized he was on the internet... but I hadn't paid for an internet plan. I said, "son, how are you using the internet?" He said, "oh, a kid at school showed me - if you go here" (he opened up the wifi settings where the DHCP assigned IP address is) "and start changing the numbers, eventual…

I used to do the same thing at hotels. Still often works. nmap -sn 192.168.0.1-255 To find everyone on the network, then start spoofing each of their MACs until you find one that works

How would you get the MAC address from the IP address?

Re: WiFi without internet on a Southwest flight

#664

Post by shortformblog »

When I was 13, I got a modem, and I would frequently call MeritNet lines to see how far I could get on the locked-down Lynx browser without a login, not having access to type in any addresses myself.

If I managed to get on an interesting page before I was eventually booted off, I won.

Tided me over until I actually got to use an ISP.

Re: WiFi without internet on a Southwest flight

#666

Post by 2OEH8eoCRo0 »

pak9rabid wrote: post #285
commandlinefan wrote: post #205

When my son was younger - maybe 9 or 10 or so, we were on a plane and he was using his phone and I looked over his shoulder and realized he was on the internet... but I hadn't paid for an internet plan. I said, "son, how are you using the internet?" He said, "oh, a kid at school showed me - if you go here" (he opened up the wifi settings where the DHCP assigned IP address is) "and start changing the numbers, eventual…

lol, I used to do this all the time at non-free wifi hotspot locations, only I'd start off with a ping sweep of the entire subnet (nmap -sP) in order to get my ARP cache filled with a bunch of potential usable IP/mac addresses on the network. From there, I'd iterate through each one and set the IP & mac address until I found one that would let me through the firewall. Granted, being a NOC engineer at Wayport (now AT&…

Am I the only one who is too chicken to commit computer crimes for very low payoff.

Re: WiFi without internet on a Southwest flight

#667

Post by drumttocs8 »

dramm wrote: post #136

“According to this data, the plane’s altitude was only fluctuating by about 20-30 feet. This is more stable than I expected!” Autopilots are very good and they are servoing to the pressure altitude. Many pressure altitude encoders used in modern aircraft (for example to drive altitudes that transponders report to SSR radar or via ADS-B) have 25 ft encoding resolution. That 25ft resolution is likely what is being seen…

What kind of telemetry (protocol, topology, etc) is used here? I'm in utilities, so am used to seeing modbus, DNP, etc, but also some OPC-UA nowdays.

Re: WiFi without internet on a Southwest flight

#668

Post by yub »

zaroth wrote: post #637
yebyen wrote: post #624

Earlier quoted context omitted.

"everything works fine" might be overstating a bit, but what happens to packets you weren't expecting when you don't have a connection open for them to go into? They probably get ignored by the network stack. Worst case scenario, the router/service endpoint sees your connection responses and the other party's strange NACK responses, but I honestly don't know enough about how it works to say "everything works fine" I'…

I imagine this can only possibly work with unencrypted WiFi. Still boggles my mind that WiFi clients don't establish an encryption key with the AP and encrypted their traffic even without a shared secret. Yes, that means you can't authenticate the AP, but it would still protect against passive snooping.

That’s what OWE is supposed to fix https://en.wikipedia.org/wiki/Opportunistic_Wireless_Encrypt...

Re: WiFi without internet on a Southwest flight

#669

Post by yub »

lxgr wrote: post #456
labcomputer wrote: post #347

Earlier quoted context omitted.

I think you could even take this one step further: Have a captive portal on an unencrypted channel (using TLS obviously) to do the vending, so that the credentials don’t need to be purchased before the flight.

Oh, these are neat ideas, I hadn’t thought of that! One concern might be expiring access credentials (not sure if most OSes will re-prompt for a new password or just give up), but you could just make the EAP credentials per-user instead and redirect users to the captive portal again once needed. This leaves clients not supporting WPA-EAP, but these could just continue using the regular unencrypted/MAC-authenticated s…

That’s what Passpoint (aka Hotspot2)’s Online Sign Up is supposed to do. Main network is protected by WPA2/3-Enterprise (aka EAP), and there’s the OSU open network where you can get signed up and get a profile installed for the full main network. And every modern device supports EAP these days.

Re: WiFi without internet on a Southwest flight

#670

Post by richardwhiuk »

withinboredom wrote: post #545
cereal_cable wrote: post #524

Earlier quoted context omitted.

A switched port learns the Mac address for packets sent into it. If port 1 sends a packet with Mac a, the switch associates that address (a) to port 1. When another node sends a packet onto another port with the same mac, say on port 2, the switch will move the learned address a to port 2 and remove it from port 1. When a switch has learned a mac address all traffic destined to that traffic would be immediately switc…

Except that this is a normal thing on wireless networks. A station may roam many times within a few minutes, and due to reflections, may even be in more than one place at a time.

I believe a UE is only ever attached to a single BSSID for a given SSID at a time.
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