简介
Editcap 是 Wireshark 程序安装时附带的可选工具之一，用于编辑数据包文件的命令行工具。
editcap [ -a <frame:comment> ] [ -A <start time> ] [ -B <stop time> ] [ -c <packets per file> ] [ -C [offset:]<choplen> ] [ -E <error probability> ] [ -F <file format> ] [ -i <seconds per file> ] [ -o <change offset> ] [ -L ] [ -r ] [ -s <snaplen> ] [ -S <strict time adjustment> ] [ -t <time adjustment> ] [ -T <encapsulation type> ] [ -V ] [ --inject-secrets <secrets type>,<file> ] [ --discard-all-secrets ] [ --capture-comment <comment> ] [ --discard-capture-comment ] infile outfile [ packet#[-packet#] … ]editcap -d -D <dup window> -w <dup time window> [ -V ] [ -I <bytes to ignore> ] [ --skip-radiotap-header ] infile outfileeditcap -h|--helpeditcap -v|--versionEditcap (Wireshark) 4.0.0 (v4.0.0-0-g0cbe09cd796b)
描述
Editcap 是一个从文件读取部分或所有捕获数据包的程序，可选地以各种方式转换它们，并将结果数据包写入输出文件。缺省情况下，它从输入文件中读取所有数据包，并以 pcapng 文件格式写进输出文件。
Editcap 的几个常见功能：
- 可以按时间、长度等截取数据包。
- 可以用来删除重复的数据包，可用来控制用于重复比较的包窗口或相对时间窗口。
- 可以用来编辑数据帧的描述。
- 可以检测、读取和写入 Wireshark 支持的相同捕获文件。
- 可以用几种输出格式编写文件。
选项
$ editcapUsage: editcap [options] ... <infile> <outfile> [ <packet#>[-<packet#>] ... ]<infile> and <outfile> must both be present; use '-' for stdin or stdout.A single packet or a range of packets can be selected.Packet selection: -r keep the selected packets; default is to delete them. -A <start time> only read packets whose timestamp is after (or equal to) the given time. -B <stop time> only read packets whose timestamp is before the given time. Time format for -A/-B options is YYYY-MM-DDThh:mm:ss[.nnnnnnnnn][Z|+-hh:mm] Unix epoch timestamps are also supported.Duplicate packet removal: --novlan remove vlan info from packets before checking for duplicates. -d remove packet if duplicate (window == 5). -D <dup window> remove packet if duplicate; configurable <dup window>. Valid <dup window> values are 0 to 1000000. NOTE: A <dup window> of 0 with -V (verbose option) is useful to print MD5 hashes. -w <dup time window> remove packet if duplicate packet is found EQUAL TO OR LESS THAN <dup time window> prior to current packet. A <dup time window> is specified in relative seconds (e.g. 0.000001). NOTE: The use of the 'Duplicate packet removal' options with other editcap options except -V may not always work as expected. Specifically the -r, -t or -S options will very likely NOT have the desired effect if combined with the -d, -D or -w. --skip-radiotap-header skip radiotap header when checking for packet duplicates. Useful when processing packets captured by multiple radios on the same channel in the vicinity of each other.Packet manipulation: -s <snaplen> truncate each packet to max. <snaplen> bytes of data. -C [offset:]<choplen> chop each packet by <choplen> bytes. Positive values chop at the packet beginning, negative values at the packet end. If an optional offset precedes the length, then the bytes chopped will be offset from that value. Positive offsets are from the packet beginning, negative offsets are from the packet end. You can use this option more than once, allowing up to 2 chopping regions within a packet provided that at least 1 choplen is positive and at least 1 is negative. -L adjust the frame (i.e. reported) length when chopping and/or snapping. -t <time adjustment> adjust the timestamp of each packet. <time adjustment> is in relative seconds (e.g. -0.5). -S <strict adjustment> adjust timestamp of packets if necessary to ensure strict chronological increasing order. The <strict adjustment> is specified in relative seconds with values of 0 or 0.000001 being the most reasonable. A negative adjustment value will modify timestamps so that each packet's delta time is the absolute value of the adjustment specified. A value of -0 will set all packets to the timestamp of the first packet. -E <error probability> set the probability (between 0.0 and 1.0 incl.) that a particular packet byte will be randomly changed. -o <change offset> When used in conjunction with -E, skip some bytes from the beginning of the packet. This allows one to preserve some bytes, in order to have some headers untouched. --seed <seed> When used in conjunction with -E, set the seed to use for the pseudo-random number generator. This allows one to repeat a particular sequence of errors. -I <bytes to ignore> ignore the specified number of bytes at the beginning of the frame during MD5 hash calculation, unless the frame is too short, then the full frame is used. Useful to remove duplicated packets taken on several routers (different mac addresses for example). e.g. -I 26 in case of Ether/IP will ignore ether(14) and IP header(20 - 4(src ip) - 4(dst ip)). -a <framenum>:<comment> Add or replace comment for given frame numberOutput File(s): -c <packets per file> split the packet output to different files based on uniform packet counts with a maximum of <packets per file> each. -i <seconds per file> split the packet output to different files based on uniform time intervals with a maximum of <seconds per file> each. -F <capture type> set the output file type; default is pcapng. An empty "-F" option will list the file types. -T <encap type> set the output file encapsulation type; default is the same as the input file. An empty "-T" option will list the encapsulation types. --inject-secrets <type>,<file> Insert decryption secrets from <file>. List supported secret types with "--inject-secrets help". --discard-all-secrets Discard all decryption secrets from the input file when writing the output file. Does not discard secrets added by "--inject-secrets" in the same command line. --capture-comment <comment> Add a capture file comment, if supported. --discard-capture-comment Discard capture file comments from the input file when writing the output file. Does not discard comments added by "--capture-comment" in the same command line.Miscellaneous: -h, --help display this help and exit. -V verbose output. If -V is used with any of the 'Duplicate Packet Removal' options (-d, -D or -w) then Packet lengths and MD5 hashes are printed to standard-error. -v, --version print version information and exit.实例
以下以实例讲解各选项的作用，测试跟踪文件主要信息如下。
$ capinfos test.pcapngFile name: test.pcapngFile type: Wireshark/... - pcapngFile encapsulation: EthernetFile timestamp precision: microseconds (6)Packet size limit: file hdr: (not set)Number of packets: 20 kFile size: 9213 kBData size: 8530 kBCapture duration: 37.528437 secondsFirst packet time: 2021-08-15 21:34:27.791910Last packet time: 2021-08-15 21:35:05.320347Data byte rate: 227 kBpsData bit rate: 1818 kbpsAverage packet size: 419.22 bytesAverage packet rate: 542 packets/sSHA256: 03cdf99c02a73c3a0ada4f857eaffa587fd78d081cc8cd4e0c7b79f1587086faRIPEMD160: 78696db33a42825bb42a7c63d0fc6053cc88e851SHA1: 7c9d9db15cfa4c237c16289862e9b1cde08a760fStrict time order: FalseCapture hardware: Intel(R) Xeon(R) Gold 6226R CPU @ 2.90GHz (with SSE4.2)Capture oper-sys: 64-bit Windows 10 (1809), build 17763Capture application: Dumpcap (Wireshark) 3.4.7 (v3.4.7-0-ge42cbf6a415f)Capture comment: testNumber of interfaces in file: 1Interface #0 info: Name = \Device\NPF_{15DAC5F9-EEF5-4A7E-A590-E0968FC225A4} Description = Ethernet0 Encapsulation = Ethernet (1 - ether) Capture length = 262144 Time precision = microseconds (6) Time ticks per second = 1000000 Time resolution = 0x06 Operating system = 64-bit Windows 10 (1809), build 17763 Number of stat entries = 1 Number of packets = 20348Packet selection
数据包选取选项，主要包括以下：
Packet selection: -r keep the selected packets; default is to delete them. -A <start time> only read packets whose timestamp is after (or equal to) the given time. -B <stop time> only read packets whose timestamp is before the given time. Time format for -A/-B options is YYYY-MM-DDThh:mm:ss[.nnnnnnnnn][Z|+-hh:mm] Unix epoch timestamps are also supported. $ editcap -r test.pcapng test1.pcapng 1-10保留 test.pcapng 中 1#-10# 的数据包，然后保存为 test1.pcapng$ editcap -r test.pcapng test1.pcapng 10保留 test.pcapng 中 10# 的数据包，然后保存为 test1.pcapng$ editcap -A "2021-08-15 21:35:00" test.pcapng test1.pcapng从 test.pcapng 中读取指定时间之后的数据包，然后保存为 test1.pcapng$ editcap -B "2021-08-15 21:35:00" test.pcapng test1.pcapng从 test.pcapng 中读取指定时间之前的数据包，然后保存为 test1.pcapng$ editcap -A "2021-08-15 21:34:30" -B "2021-08-15 21:35:00" test.pcapng test1.pcapng从 test.pcapng 中读取指定时间前后的数据包，然后保存为 test1.pcapngDuplicate packet removal
重复数据包删除选项，主要包括以下：
Duplicate packet removal: --novlan remove vlan info from packets before checking for duplicates. -d remove packet if duplicate (window == 5). -D <dup window> remove packet if duplicate; configurable <dup window>. Valid <dup window> values are 0 to 1000000. NOTE: A <dup window> of 0 with -v (verbose option) is useful to print MD5 hashes. -w <dup time window> remove packet if duplicate packet is found EQUAL TO OR LESS THAN <dup time window> prior to current packet. A <dup time window> is specified in relative seconds (e.g. 0.000001). NOTE: The use of the 'Duplicate packet removal' options with other editcap options except -v may not always work as expected. Specifically the -r, -t or -S options will very likely NOT have the desired effect if combined with the -d, -D or -w. --skip-radiotap-header skip radiotap header when checking for packet duplicates. Useful when processing packets captured by multiple radios on the same channel in the vicinity of each other.$ editcap --novlan test.pcapng test1.pcapng跟踪文件实测实际无效果，查询文档或与数据包文件相关，需满足 linux sll + vlan 条件的数据包文件。$ editcap -d test.pcapng test1.pcapng2 packets seen, 1 packet skipped with duplicate window of 5 packets.尝试删除重复的数据包，将当前报文的长度和MD5哈希值与前4个报文进行比较。如果找到匹配，则删除当前报文。这个选项相当于使用选项-D 5。 $ editcap -d -D 6 test1.pcapng test2.pcapng6 packets seen, 1 packet skipped with duplicate window of 6 packets.6个窗口，即将当前报文的长度和MD5哈希值与前5个报文进行比较。$ editcap -D 0 -V test1.pcapng test2.pcapngFile test1.pcapng is a InfoVista 5View capture capture file.Packet: 1, Len: 112, MD5 Hash: d60cdd08f3de236cf7a2dc35cb7d6de7Packet: 2, Len: 112, MD5 Hash: 8115aa6990b2064660934f36f1b5baccPacket: 3, Len: 112, MD5 Hash: 1fbf43ee3fb682cb82d5adddf87bb0ccPacket: 4, Len: 112, MD5 Hash: 129fcc09853b16a260b55b92656fb148Packet: 5, Len: 112, MD5 Hash: 4f2a15c3946ab86b6fccf70ad84d57a9Packet: 6, Len: 112, MD5 Hash: d60cdd08f3de236cf7a2dc35cb7d6de76 packets seen, 0 packets skipped with duplicate window of 0 packets. $ editcap -w 0.000015 test.pcapng test2.pcapng6 packets seen, 1 packet skipped with duplicate time window equal to or less than 0.000015000 seconds. $ editcap --skip-radiotap-header当检查数据包重复时跳过 radiotap 头部。因无合适数据包文件，暂无测试。Packet manipulation
数据包编辑操作选项，主要包括以下：
Packet manipulation: -s <snaplen> truncate each packet to max. <snaplen> bytes of data. -C [offset:]<choplen> chop each packet by <choplen> bytes. Positive values chop at the packet beginning, negative values at the packet end. If an optional offset precedes the length, then the bytes chopped will be offset from that value. Positive offsets are from the packet beginning, negative offsets are from the packet end. You can use this option more than once, allowing up to 2 chopping regions within a packet provided that at least 1 choplen is positive and at least 1 is negative. -L adjust the frame (i.e. reported) length when chopping and/or snapping. -t <time adjustment> adjust the timestamp of each packet. <time adjustment> is in relative seconds (e.g. -0.5). -S <strict adjustment> adjust timestamp of packets if necessary to ensure strict chronological increasing order. The <strict adjustment> is specified in relative seconds with values of 0 or 0.000001 being the most reasonable. A negative adjustment value will modify timestamps so that each packet's delta time is the absolute value of the adjustment specified. A value of -0 will set all packets to the timestamp of the first packet. -E <error probability> set the probability (between 0.0 and 1.0 incl.) that a particular packet byte will be randomly changed. -o <change offset> When used in conjunction with -E, skip some bytes from the beginning of the packet. This allows one to preserve some bytes, in order to have some headers untouched. --seed <seed> When used in conjunction with -E, set the seed to use for the pseudo-random number generator. This allows one to repeat a particular sequence of errors. -I <bytes to ignore> ignore the specified number of bytes at the beginning of the frame during MD5 hash calculation, unless the frame is too short, then the full frame is used. Useful to remove duplicated packets taken on several routers (different mac addresses for example). e.g. -I 26 in case of Ether/IP will ignore ether(14) and IP header(20 - 4(src ip) - 4(dst ip)). -a <framenum>:<comment> Add or replace comment for given frame number$ editcap -s 60 test.pcapng test1.pcapng按 60 字节长度截断数据包。$ editcap -C 12:4 test.pcapng test2.pcapng删除 vlan +---+-------+-----------+---------------+-------------------+| 5 | 10 | 15 | 20 | 25 |+---+-------+-----------+---------------+-------------------+删除 10 和 20 区域字节$ editcap -C 5:10 -C -25:-20 test1.pcapng test2.pcapng$ editcap -C 5:10 -C 50:-20 test1.pcapng test2.pcapng$ editcap -C -70:10 -C -25:-20 test1.pcapng test2.pcapng$ editcap -C -70:10 -C 50:-20 test1.pcapng test2.pcapng$ editcap -C 30:20 -C -60:-10 test1.pcapng test2.pcapng$ editcap -C 30:20 -C 15:-10 test1.pcapng test2.pcapng$ editcap -C -45:20 -C -60:-10 test1.pcapng test2.pcapng$ editcap -C -45:20 -C 15:-10 test1.pcapng test2.pcapng$ editcap -L -C 12:4 test.pcapng test2.pcapng无 -L 时，-C 删除 4 字节，最终会显示 Frame 长度 112 ，捕获长度 108；有 -L 时，-C 删除 4 字节，最终会显示 Frame 长度 108 ，捕获长度 108 。$ editcap -t -1 test.pcapng test2.pcapng每个数据包往前调整1s$ editcap -S -1 test.pcapng test2.pcapng每个数据包按 1s 时间顺序递增$ editcap -E -0.2 test.pcapng test2.pcapng设置随机改变一个特定数据包字节的概率为 0.2 。此选项用于模糊测试协议解析器。$ editcap -E -0.2 -o 34 test.pcapng test2.pcapng跳过数据包开头的 34 字节，设置随机改变一个特定数据包字节的概率为 0.2。$ editcap -E -0.2 --seed 10 test.pcapng test2.pcapng设置伪随机数生成器的种子，这允许重复特定的错误序列。$ editcap -d -I 26 test.pcapng test2.pcapng20348 packets seen, 11 packets skipped with duplicate window of 5 packets.在MD5哈希计算时，忽略帧开始的指定字节数，除非该帧太短，否则将使用完整帧。$ editcap -a 1:"test teset" test.pcapng test2.pcapng增加或替换指定数据包的注释Output File(s)
输出文件选项，主要包括以下：
Output File(s): -c <packets per file> split the packet output to different files based on uniform packet counts with a maximum of <packets per file> each. -i <seconds per file> split the packet output to different files based on uniform time intervals with a maximum of <seconds per file> each. -F <capture type> set the output file type; default is pcapng. An empty "-F" option will list the file types. -T <encap type> set the output file encapsulation type; default is the same as the input file. An empty "-T" option will list the encapsulation types. --inject-secrets <type>,<file> Insert decryption secrets from <file>. List supported secret types with "--inject-secrets help". --discard-all-secrets Discard all decryption secrets from the input file when writing the output file. Does not discard secrets added by "--inject-secrets" in the same command line. --capture-comment <comment> Add a capture file comment, if supported. --discard-capture-comment Discard capture file comments from the input file when writing the output file. Does not discard comments added by "--capture-comment" in the same command line. $ editcap -c 4 icmp.pcapng icmp1.pcapng每 4 个包分成一个文件，从00000开始，然后是它的第一个包的时间戳。如果输入文件不包含时间戳信息，则省略时间戳。譬如 icmp.pcapng 中一共 16 个数据包，分割成了 icmp1_00000_20210704113248.pcapng、icmp1_00001_20210704113249.pcapng、icmp1_00002_20210704113250.pcapng、icmp1_00003_20210704113251.pcapng 4个文件。$ editcap -i 1 icmp.pcapng icmp1.pcapng根据统一的时间间隔将数据包输出分割到不同的文件，每个文件的最大间隔为 1 秒。允许使用浮点值(例如0.5)。$ editcap -Feditcap: The available capture file types for the "-F" flag are: pcap - Wireshark/tcpdump/... - pcap pcapng - Wireshark/... - pcapng 5views - InfoVista 5View capture btsnoop - Symbian OS btsnoop commview-ncf - TamoSoft CommView NCF commview-ncfx - TamoSoft CommView NCFX dct2000 - Catapult DCT2000 trace (.out format) erf - Endace ERF capture eyesdn - EyeSDN USB S0/E1 ISDN trace format k12text - K12 text file lanalyzer - Novell LANalyzer logcat - Android Logcat Binary format logcat-brief - Android Logcat Brief text format logcat-long - Android Logcat Long text format logcat-process - Android Logcat Process text format logcat-tag - Android Logcat Tag text format logcat-thread - Android Logcat Thread text format logcat-threadtime - Android Logcat Threadtime text format logcat-time - Android Logcat Time text format modpcap - Modified tcpdump - pcap netmon1 - Microsoft NetMon 1.x netmon2 - Microsoft NetMon 2.x nettl - HP-UX nettl trace ngsniffer - Sniffer (DOS) ngwsniffer_1_1 - NetXray, Sniffer (Windows) 1.1 ngwsniffer_2_0 - Sniffer (Windows) 2.00x nokiapcap - Nokia tcpdump - pcap nsecpcap - Wireshark/tcpdump/... - nanosecond pcap nstrace10 - NetScaler Trace (Version 1.0) nstrace20 - NetScaler Trace (Version 2.0) nstrace30 - NetScaler Trace (Version 3.0) nstrace35 - NetScaler Trace (Version 3.5) observer - Viavi Observer rf5 - Tektronix K12xx 32-bit .rf5 format rh6_1pcap - RedHat 6.1 tcpdump - pcap snoop - Sun snoop suse6_3pcap - SuSE 6.3 tcpdump - pcap visual - Visual Networks traffic capture $ editcap -F pcap设置输出捕获文件的文件格式。缺省为pcapng格式。$ editcap -Teditcap: The available encapsulation types for the "-T" flag are: ap1394 - Apple IP-over-IEEE 1394 arcnet - ARCNET arcnet_linux - Linux ARCNET ascend - Lucent/Ascend access equipment atm-pdus - ATM PDUs atm-pdus-untruncated - ATM PDUs - untruncated atm-rfc1483 - RFC 1483 ATM ax25 - Amateur Radio AX.25 ax25-kiss - AX.25 with KISS header bacnet-ms-tp - BACnet MS/TP bacnet-ms-tp-with-direction - BACnet MS/TP with Directional Info ber - ASN.1 Basic Encoding Rules bluetooth-bredr-bb-rf - Bluetooth BR/EDR Baseband RF bluetooth-h4 - Bluetooth H4 bluetooth-h4-linux - Bluetooth H4 with linux header bluetooth-hci - Bluetooth without transport layer bluetooth-le-ll - Bluetooth Low Energy Link Layer bluetooth-le-ll-rf - Bluetooth Low Energy Link Layer RF bluetooth-linux-monitor - Bluetooth Linux Monitor can20b - Controller Area Network 2.0B chdlc - Cisco HDLC chdlc-with-direction - Cisco HDLC with Directional Info cosine - CoSine L2 debug log dbus - D-Bus dct2000 - Catapult DCT2000 docsis - Data Over Cable Service Interface Specification docsis31_xra31 - DOCSIS with Excentis XRA pseudo-header dpauxmon - DisplayPort AUX channel with Unigraf pseudo-header dpnss_link - Digital Private Signalling System No 1 Link Layer dvbci - DVB-CI (Common Interface) ebhscr - Elektrobit High Speed Capture and Replay enc - OpenBSD enc(4) encapsulating interface epon - Ethernet Passive Optical Network erf - Extensible Record Format eri_enb_log - Ericsson eNode-B raw log ether - Ethernet ether-mpacket - IEEE 802.3br mPackets ether-nettl - Ethernet with nettl headers etw - Event Tracing for Windows messages fc2 - Fibre Channel FC-2 fc2sof - Fibre Channel FC-2 With Frame Delimiter fddi - FDDI fddi-nettl - FDDI with nettl headers fddi-swapped - FDDI with bit-swapped MAC addresses flexray - FlexRay frelay - Frame Relay frelay-with-direction - Frame Relay with Directional Info gcom-serial - GCOM Serial gcom-tie1 - GCOM TIE1 gfp-f - ITU-T G.7041/Y.1303 Generic Framing Procedure Frame-mapped mode gfp-t - ITU-T G.7041/Y.1303 Generic Framing Procedure Transparent mode gprs-llc - GPRS LLC gsm_um - GSM Um Interface hhdlc - HiPath HDLC i2c-linux - I2C with Linux-specific pseudo-header ieee-802-11 - IEEE 802.11 Wireless LAN ieee-802-11-avs - IEEE 802.11 plus AVS radio header ieee-802-11-netmon - IEEE 802.11 plus Network Monitor radio header ieee-802-11-prism - IEEE 802.11 plus Prism II monitor mode radio header ieee-802-11-radio - IEEE 802.11 Wireless LAN with radio information ieee-802-11-radiotap - IEEE 802.11 plus radiotap radio header ieee-802-16-mac-cps - IEEE 802.16 MAC Common Part Sublayer infiniband - InfiniBand ios - Cisco IOS internal ip-ib - IP over IB ip-over-fc - RFC 2625 IP-over-Fibre Channel ip-over-ib - IP over InfiniBand ipfix - RFC 5655/RFC 5101 IPFIX ipmb-kontron - Intelligent Platform Management Bus with Kontron pseudo-header ipmi-trace - IPMI Trace Data Collection ipnet - Solaris IPNET irda - IrDA isdn - ISDN iso14443 - ISO 14443 contactless smartcard standards ixveriwave - IxVeriWave header and stats block jfif - JPEG/JFIF json - JavaScript Object Notation juniper-atm1 - Juniper ATM1 juniper-atm2 - Juniper ATM2 juniper-chdlc - Juniper C-HDLC juniper-ether - Juniper Ethernet juniper-frelay - Juniper Frame-Relay juniper-ggsn - Juniper GGSN juniper-mlfr - Juniper MLFR juniper-mlppp - Juniper MLPPP juniper-ppp - Juniper PPP juniper-pppoe - Juniper PPPoE juniper-st - Juniper Secure Tunnel Information juniper-svcs - Juniper Services juniper-vn - Juniper VN juniper-vp - Juniper Voice PIC k12 - K12 protocol analyzer lapb - LAPB lapd - LAPD layer1-event - EyeSDN Layer 1 event lin - Local Interconnect Network linux-atm-clip - Linux ATM CLIP linux-lapd - LAPD with Linux pseudo-header linux-sll - Linux cooked-mode capture v1 linux-sll2 - Linux cooked-mode capture v2 log_3GPP - 3GPP Phone Log logcat - Android Logcat Binary format logcat_brief - Android Logcat Brief text format logcat_long - Android Logcat Long text format logcat_process - Android Logcat Process text format logcat_tag - Android Logcat Tag text format logcat_thread - Android Logcat Thread text format logcat_threadtime - Android Logcat Threadtime text format logcat_time - Android Logcat Time text format loop - OpenBSD loopback loratap - LoRaTap ltalk - Localtalk message_analyzer_wfp_capture2_v4 - Message Analyzer WFP Capture2 v4 message_analyzer_wfp_capture2_v6 - Message Analyzer WFP Capture2 v6 message_analyzer_wfp_capture_auth_v4 - Message Analyzer WFP Capture Auth v4 message_analyzer_wfp_capture_auth_v6 - Message Analyzer WFP Capture Auth v6 message_analyzer_wfp_capture_v4 - Message Analyzer WFP Capture v4 message_analyzer_wfp_capture_v6 - Message Analyzer WFP Capture v6 mime - MIME most - Media Oriented Systems Transport mp2ts - ISO/IEC 13818-1 MPEG2-TS mp4 - MP4 files mpeg - MPEG mtp2 - SS7 MTP2 mtp2-with-phdr - MTP2 with pseudoheader mtp3 - SS7 MTP3 mux27010 - MUX27010 netanalyzer - Hilscher netANALYZER netanalyzer-transparent - Hilscher netANALYZER-Transparent netlink - Linux Netlink netmon_event - Network Monitor Network Event netmon_filter - Network Monitor Filter netmon_header - Network Monitor Header netmon_network_info - Network Monitor Network Info nfc-llcp - NFC LLCP nflog - NFLOG nordic_ble - nRF Sniffer for Bluetooth LE nstrace10 - NetScaler Encapsulation 1.0 of Ethernet nstrace20 - NetScaler Encapsulation 2.0 of Ethernet nstrace30 - NetScaler Encapsulation 3.0 of Ethernet nstrace35 - NetScaler Encapsulation 3.5 of Ethernet null - NULL/Loopback packetlogger - Apple Bluetooth PacketLogger pflog - OpenBSD PF Firewall logs pflog-old - OpenBSD PF Firewall logs, pre-3.4 pktap - Apple PKTAP ppi - Per-Packet Information header ppp - PPP ppp-with-direction - PPP with Directional Info pppoes - PPP-over-Ethernet session raw-icmp-nettl - Raw ICMP with nettl headers raw-icmpv6-nettl - Raw ICMPv6 with nettl headers raw-telnet-nettl - Raw telnet with nettl headers rawip - Raw IP rawip-nettl - Raw IP with nettl headers rawip4 - Raw IPv4 rawip6 - Raw IPv6 redback - Redback SmartEdge rfc7468 - RFC 7468 file rtac-serial - RTAC serial-line ruby_marshal - Ruby marshal object s4607 - STANAG 4607 s5066-dpdu - STANAG 5066 Data Transfer Sublayer PDUs(D_PDU) sccp - SS7 SCCP sctp - SCTP sdh - SDH sdjournal - systemd journal sdlc - SDLC sita-wan - SITA WAN packets slip - SLIP socketcan - SocketCAN symantec - Symantec Enterprise Firewall tnef - Transport-Neutral Encapsulation Format tr - Token Ring tr-nettl - Token Ring with nettl headers tzsp - Tazmen sniffer protocol unknown - Unknown unknown-nettl - Unknown link-layer type with nettl headers usb-20 - USB 2.0/1.1/1.0 packets usb-darwin - USB packets with Darwin (macOS, etc.) headers usb-freebsd - USB packets with FreeBSD header usb-linux - USB packets with Linux header usb-linux-mmap - USB packets with Linux header and padding usb-usbpcap - USB packets with USBPcap header user0 - USER 0 user1 - USER 1 user2 - USER 2 user3 - USER 3 user4 - USER 4 user5 - USER 5 user6 - USER 6 user7 - USER 7 user8 - USER 8 user9 - USER 9 user10 - USER 10 user11 - USER 11 user12 - USER 12 user13 - USER 13 user14 - USER 14 user15 - USER 15 v5-ef - V5 Envelope Function vpp - Vector Packet Processing graph dispatch trace vsock - Linux vsock whdlc - Wellfleet HDLC wireshark-upper-pdu - Wireshark Upper PDU export wpan - IEEE 802.15.4 Wireless PAN wpan-nofcs - IEEE 802.15.4 Wireless PAN with FCS not present wpan-nonask-phy - IEEE 802.15.4 Wireless PAN non-ASK PHY wpan-tap - IEEE 802.15.4 Wireless with TAP pseudo-header x2e-serial - X2E serial line capture x2e-xoraya - X2E Xoraya x25-nettl - X.25 with nettl headers xeth - Xerox 3MB Ethernet zwave-serial - Z-Wave Serial API packets$ editcap -T linux-sll设置输出捕获文件的包封装类型。如果 -T 用于指定封装类型，输出捕获文件的封装类型将被强制为指定类型。默认类型适合于输入捕获文件的封装类型。$ editcap --inject-secrets <secrets type>,<file>$ editcap --inject-secrets help tls wg$ editcap --inject-secrets tls,tls.log test.pcapng test1.pcapng将tls密钥加进test.pcapng中的 Decryption Secrets Block (DSB)，输出test1.pcapng$ editcap --discard-all-secrets test1.pcapng test.pcapng当写入输出文件时，丢弃输入文件中的所有解密密钥。$ editcap --capture-comment "test test" test.pcapng test1.pcapng将给定的注释添加到输出文件中，如果输出文件格式支持的话,将在输入文件中出现的任何注释之后添加新的注释。此选项可以指定多次。注意，Wireshark 目前只显示捕获文件的第一个注释。$ editcap --discard-capture-comment test1.pcapng test.pcapng丢弃来自输入文件的所有捕获文件注释。Miscellaneous
杂项选项，主要包括以下：
Miscellaneous: -h, --help display this help and exit. -V verbose output. If -V is used with any of the 'Duplicate Packet Removal' options (-d, -D or -w) then Packet lengths and MD5 hashes are printed to standard-error. -v, --version print version information and exit.$ editcap -hEditcap (Wireshark) 4.0.0 (v4.0.0-0-g0cbe09cd796b)Edit and/or translate the format of capture files.See https://www.wireshark.org for more information.Usage: editcap [options] ... <infile> <outfile> [ <packet#>[-<packet#>] ... ]<infile> and <outfile> must both be present; use '-' for stdin or stdout.A single packet or a range of packets can be selected.Packet selection: -r keep the selected packets; default is to delete them. -A <start time> only read packets whose timestamp is after (or equal to) the given time. -B <stop time> only read packets whose timestamp is before the given time. Time format for -A/-B options is YYYY-MM-DDThh:mm:ss[.nnnnnnnnn][Z|+-hh:mm] Unix epoch timestamps are also supported.Duplicate packet removal: --novlan remove vlan info from packets before checking for duplicates. -d remove packet if duplicate (window == 5). -D <dup window> remove packet if duplicate; configurable <dup window>. Valid <dup window> values are 0 to 1000000. NOTE: A <dup window> of 0 with -V (verbose option) is useful to print MD5 hashes. -w <dup time window> remove packet if duplicate packet is found EQUAL TO OR LESS THAN <dup time window> prior to current packet. A <dup time window> is specified in relative seconds (e.g. 0.000001). NOTE: The use of the 'Duplicate packet removal' options with other editcap options except -V may not always work as expected. Specifically the -r, -t or -S options will very likely NOT have the desired effect if combined with the -d, -D or -w. --skip-radiotap-header skip radiotap header when checking for packet duplicates. Useful when processing packets captured by multiple radios on the same channel in the vicinity of each other.Packet manipulation: -s <snaplen> truncate each packet to max. <snaplen> bytes of data. -C [offset:]<choplen> chop each packet by <choplen> bytes. Positive values chop at the packet beginning, negative values at the packet end. If an optional offset precedes the length, then the bytes chopped will be offset from that value. Positive offsets are from the packet beginning, negative offsets are from the packet end. You can use this option more than once, allowing up to 2 chopping regions within a packet provided that at least 1 choplen is positive and at least 1 is negative. -L adjust the frame (i.e. reported) length when chopping and/or snapping. -t <time adjustment> adjust the timestamp of each packet. <time adjustment> is in relative seconds (e.g. -0.5). -S <strict adjustment> adjust timestamp of packets if necessary to ensure strict chronological increasing order. The <strict adjustment> is specified in relative seconds with values of 0 or 0.000001 being the most reasonable. A negative adjustment value will modify timestamps so that each packet's delta time is the absolute value of the adjustment specified. A value of -0 will set all packets to the timestamp of the first packet. -E <error probability> set the probability (between 0.0 and 1.0 incl.) that a particular packet byte will be randomly changed. -o <change offset> When used in conjunction with -E, skip some bytes from the beginning of the packet. This allows one to preserve some bytes, in order to have some headers untouched. --seed <seed> When used in conjunction with -E, set the seed to use for the pseudo-random number generator. This allows one to repeat a particular sequence of errors. -I <bytes to ignore> ignore the specified number of bytes at the beginning of the frame during MD5 hash calculation, unless the frame is too short, then the full frame is used. Useful to remove duplicated packets taken on several routers (different mac addresses for example). e.g. -I 26 in case of Ether/IP will ignore ether(14) and IP header(20 - 4(src ip) - 4(dst ip)). -a <framenum>:<comment> Add or replace comment for given frame numberOutput File(s): -c <packets per file> split the packet output to different files based on uniform packet counts with a maximum of <packets per file> each. -i <seconds per file> split the packet output to different files based on uniform time intervals with a maximum of <seconds per file> each. -F <capture type> set the output file type; default is pcapng. An empty "-F" option will list the file types. -T <encap type> set the output file encapsulation type; default is the same as the input file. An empty "-T" option will list the encapsulation types. --inject-secrets <type>,<file> Insert decryption secrets from <file>. List supported secret types with "--inject-secrets help". --discard-all-secrets Discard all decryption secrets from the input file when writing the output file. Does not discard secrets added by "--inject-secrets" in the same command line. --capture-comment <comment> Add a capture file comment, if supported. --discard-capture-comment Discard capture file comments from the input file when writing the output file. Does not discard comments added by "--capture-comment" in the same command line.Miscellaneous: -h, --help display this help and exit. -V verbose output. If -V is used with any of the 'Duplicate Packet Removal' options (-d, -D or -w) then Packet lengths and MD5 hashes are printed to standard-error. -v, --version print version information and exit. $ editcap -rV test.pcapng test1.pcapng 1File test.pcapng is a InfoVista 5View capture capture file.Add_Selected: 1Not inclusive ... 1Packet: 1$ editcap -dV test.pcapng test1.pcapngFile test.pcapng is a InfoVista 5View capture capture file.Packet: 1, Len: 112, MD5 Hash: d60cdd08f3de236cf7a2dc35cb7d6de7Packet: 2, Len: 112, MD5 Hash: 8115aa6990b2064660934f36f1b5baccPacket: 3, Len: 112, MD5 Hash: 1fbf43ee3fb682cb82d5adddf87bb0ccPacket: 4, Len: 112, MD5 Hash: 129fcc09853b16a260b55b92656fb148Packet: 5, Len: 112, MD5 Hash: 4f2a15c3946ab86b6fccf70ad84d57a9Packet: 6, Len: 112, MD5 Hash: d60cdd08f3de236cf7a2dc35cb7d6de76 packets seen, 0 packets skipped with duplicate window of 5 packets. $ editcap -vEditcap (Wireshark) 4.0.0 (v4.0.0-0-g0cbe09cd796b).Copyright 1998-2022 Gerald Combs <gerald@wireshark.org> and contributors.Licensed under the terms of the GNU General Public License (version 2 or later).This is free software; see the file named COPYING in the distribution. There isNO WARRANTY; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.Compiled (64-bit) using Microsoft Visual Studio 2022 (VC++ 14.32, build 31332),with GLib 2.72.3, with PCRE2, with zlib 1.2.12, with binary plugins.Running on 64-bit Windows 10 (1809), build 17763, with Intel(R) Xeon(R) Gold6242R CPU @ 3.10GHz (with SSE4.2), with 16382 MB of physical memory, with GLib2.72.3, with PCRE2 10.40 2022-04-14, with LC_TYPE=C, binary plugins supported.