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Weird pcap header of byte sequence 0a 0d 0d 0a created on Mac?

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问题 I have a PCAP file that was created on a Mac with mergecap that can be parsed on a Mac with Apple's libpcap but cannot be parsed on a Linux system. combined file has an extra 16-byte header that contains 0a 0d 0d 0a 78 00 00 00 before the 4d 3c 2b 1a intro that's common in pcap files. Here is a hex dump: 0000000: 0a0d 0d0a 7800 0000 4d3c 2b1a 0100 0000 ....x...M<+..... 0000010: ffff ffff ffff ffff 0100 4700 4669 6c65 ..........G.File 0000020: 2063 7265 6174 6564 2062 7920 6d65 7267 created by

Is there a way to extract the WiFi protocol type from a PcapNG trace file?

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问题 I'm building a PcapNG parser (in Python) to analyse WiFi packets. I'd like to be able to display the link type (e.g., the protocol variant: 802.11b, 802.11a, 802.11g or 802.11n). However, reading the PcapNG format definition I see only the following being mentioned: LINKTYPE_IEEE802_11 105 IEEE 802.11 (wireless) LINKTYPE_IEEE802_11_RADIO 127 802.11 plus BSD radio header Is there a way to extract the WiFi protocol type from a PcapNG trace file? 回答1: If the link-layer header type for the

Cannot understand 802.11 Data Frame format in PcapNG file

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问题 I have PcapNG files created by Wireshark, which I try to parse with python-pcapng . However, I cannot figure out how to reconcile the output I receive from FileScanner 's packet_payload_info with the 802.11 Data frame format : This is the output I get (my code is at the bottom): magic_number 0xa0d0d0a SectionHeader(version_major=1, version_minor=0, section_length=-1, options=Options({'shb_userappl': [u'Dumpcap 1.12.4 (v1.12.4-0-gb4861da from master-1.12)'], 'shb_os': [u'Mac OS X 10.10.2,

Weird pcap header of byte sequence 0a 0d 0d 0a created on Mac?

阅读更多关于 Weird pcap header of byte sequence 0a 0d 0d 0a created on Mac?

I have a PCAP file that was created on a Mac with mergecap that can be parsed on a Mac with Apple's libpcap but cannot be parsed on a Linux system. combined file has an extra 16-byte header that contains 0a 0d 0d 0a 78 00 00 00 before the 4d 3c 2b 1a intro that's common in pcap files. Here is a hex dump: 0000000: 0a0d 0d0a 7800 0000 4d3c 2b1a 0100 0000 ....x...M<+..... 0000010: ffff ffff ffff ffff 0100 4700 4669 6c65 ..........G.File 0000020: 2063 7265 6174 6564 2062 7920 6d65 7267 created by merg 0000030: 696e 673a 200a 4669 6c65 313a 2037 2e70 ing: .File1: 7.p 0000040: 6361 7020 0a46 696c