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Hello,

I want to send data from Android device to a Windows PC. Therefore I create a hotspot on the Android device and connect the PC to it. I wrote a small app that sends UDP packets from the Android device. I can see the UDP packets when I use Wireshark on the PC but I'm not able to open/use the data in any other program including Simulink and a small Java application I wrote. Is it possible that the packets are blocked for example by a firewall but I can see them in Wireshark anyway? Or can I be sure that the packets make it through the firewall if I receive them in Wireshark?

Would be glad if someone could help me :)

asked 20 May '15, 01:15

Ph_il's gravatar image

Ph_il
6113
accept rate: 0%


I have encountered the similar situation before on a program I wrote on windows. My experience is that these packets will show up in wireshark even though that are blocked by firewall. If there is no firewall and there is no application listening on the UDP port, windows will send ICMP port unreachable packets back.

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answered 27 May '15, 07:50

pktUser1001's gravatar image

pktUser1001
201495054
accept rate: 12%

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question asked: 20 May '15, 01:15

question was seen: 2,535 times

last updated: 27 May '15, 07:50

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