wireshark

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

由 ℡╲_俬逩灬. 提交于 2019-12-11 10:29:43
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

Inbound/outbound not supported on linktype 1 when reading savefiles

由 梦想的初衷 提交于 2019-12-11 08:48:03
问题 To get incoming packet from a pcap file. I set "inbound" filter in pcap_compile() and here is partial code. pcap = pcap_open_offline("test.pcap", errbuf); if (pcap == NULL) { fprintf(stderr, "error reading pcap file: %s\n", errbuf); exit(1); } char filter_exp[] = "inbound"; struct bpf_program pgm; if (pcap_compile(pcap, &pgm, filter_exp, 0, PCAP_NETMASK_UNKNOWN) == -1) { printf("Bad filter - %s\n", pcap_geterr(pcap)); return 1; } if (pcap_setfilter(pcap, &pgm) == -1) { printf("Error setting

AMR Raw Output from Wireshark not playing in players

由 无人久伴 提交于 2019-12-11 07:52:34
问题 I have an issue related to the AMR codec in RTP. I have RTP capture in pcap form having the AMR-NB and AMR-WB codecs. Now, using the RTP stream analysis, i have extracted the raw output but I am not able to play that extracted raw output in any of the player. Is there any way i can play that raw output or decode it and it save it raw format or re-encode it to some other format? Regards Nitin 回答1: Wireshark does not do the conversion necessary to convert the RTP AMR payloads into the storage

How to filter the inbound packet by libpcap in C

由 时光怂恿深爱的人放手 提交于 2019-12-11 07:30:09
问题 Recently I am trying to filter the inbound packet from the pcap file by libpcap in C/C++. Here is partial code. pcap = pcap_open_offline(argv[0], errbuf); if (pcap == NULL) { fprintf(stderr, "error reading pcap file: %s\n", errbuf); exit(1); } char filter_exp[] = "inbound"; struct bpf_program pgm; if (pcap_compile(pcap, &pgm, filter_exp, 0, PCAP_NETMASK_UNKNOWN) == -1) { printf("Bad filter - %s\n", pcap_geterr(pcap)); return 1; } if (pcap_setfilter(pcap, &pgm) == -1) { printf("Error setting

selecting major flows at once in a huge pcap in wireshark

由 社会主义新天地 提交于 2019-12-11 06:43:41
问题 i have a large pcap with more than 1000 tcp flows. i want to filter major flows say with packets greater than 100. if i go to conversations and right click on those flows, i can filter those flows, but then i have to do it several times and since i have huge pcap, it may exceed 100. is there any other quick display filter i can use which will give me flows having number of packets > n (n being any +ve integer). say some filter like : flow.num_pkt > 100 which can give me all such flows. thanks

Multiple WEP keys which can be retrieved from the Pcap file

由 泄露秘密 提交于 2019-12-11 05:36:53
问题 Ok, i have this Cap file that i captured with Wireshark. There are multiple WEP keys which can be retrieved from the file. Is there a way, using Wireshark or aircrack-ng, to know exactly how many wep keys that are available in that Pcap file ? Edit: not the Wep passwords, just the number of Wep keys available. 回答1: Wireshark has a display/filter field named wlan.wep.key . So: Using tshark with a display filter and wc as follows might give you the desired result (altho i haven't tried it):

Packets dropped during chunked HTTP 1.1 request sent by NSURLConnection

由 冷暖自知 提交于 2019-12-11 05:23:16
问题 I am using the following code to set up a chunked HTTP 1.1 request (the request itself is a SOAP one but I don't think this is particularly important): NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url]; ... NSInputStream *dataStream = [NSInputStream inputStreamWithFileAtPath:_tempFilePath]; [request setHTTPBodyStream:dataStream]; self.p_connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES]; This seems to work fine except when

实验二

由 只愿长相守 提交于 2019-12-11 03:47:23
网络对抗技术 实验报告 实验二 网络嗅探与欺骗 学生姓名 陆雨楠 年级 2017级 区队 网安六区 指导教师 高见 信息技术与网络安全 学院 2018 年9 月2 7 日 实验任务总纲 2019 —20 20 学年 第 一 学期 一、实验目的 1．加深并消化本课程授课内容，复习所学过的互联网搜索技巧、方法和技术； 2．了解并熟悉常用的网络嗅探方式，掌握常用抓包软件的使用方法和过滤技巧，能够对给定的数据包分析网络基本行为；掌握ARP欺骗的基本原理，以及基于ARP欺骗的DNS攻击方式； 3．达到巩固课程知识和实际应用的目的。 二、实验要求 1．认真阅读每个实验内容，需要截图的题目，需清晰截图并对截图进行标注和说明。 2．文档要求结构清晰，图文表达准确，标注规范。推理内容客观、合理、逻辑性强。 3．软件工具可使用office2003或2007、CAIN、Wireshark等。 4．实验结束后，保留电子文档。 三 、实验步骤 1．准备 提前做好实验准备，实验前应把详细了解实验目的、实验要求和实验内容，熟悉并准备好实验用的软件工具，按照实验内容和要求提前做好实验内容的准备。 2．实验环境 描述实验所使用的硬件和软件环境（包括各种软件工具）； 开机并启动软件office2003或2007、浏览器、Wireshark、CAIN。 工具下载地址： CAIN https://pan.baidu

Wireshark dissector - How to use dissectortable:add(pattern, dissector) with ANY pattern?

由 人走茶凉 提交于 2019-12-11 02:25:29
问题 I am creating a custom dissector for Wireshark. I am adding my dissector to the dissector table kind of like this... udp_table = DissectorTable.get("udp.port") udp_table:add(7777,my_proto) However, instead of my dissector handling just udp port 7777, I want it to handle ANY udp port or at least a really large range. How can I do this? It says in the documentation, it says I can replace 7777 (the pattern) with a range, but I'm not sure what the syntax is for that. Thank you! 回答1: In theory a

where does the wireshark capture the packets

由 我只是一个虾纸丫 提交于 2019-12-11 02:05:47
问题 where does the wireshark capture the packets in the linux kernel? If an output packet is captured by wireshark , will the packet be sent out definitely through corresponding interface? In other words, could an output packet that captured by wireshark be dropped before it is sent out? 回答1: where does the wireshark capture the packets in the linux kernel? On UN*Xes, it uses libpcap, which, on Linux, uses AF_PACKET sockets. (On Windows, it uses WinPcap, which is a driver plus a port of libpcap
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