Similar to the -V option, but causes TShark to only show a detailed view of the comma-separated list of protocols specified, and show only the top-level detail line for all other protocols, rather than a detailed view of all protocols. Note that the interface might be in promiscuous mode for some other reason; hence, -p cannot be used to ensure that the only traffic that is captured is traffic sent to or from the machine on which TShark is running, broadcast traffic, and multicast traffic to addresses received by that machine.
If used before the first occurrence of the -i option, no interface will be put into the promiscuous mode. If used after an -i option, the interface specified by the last -i option occurring before this option will not be put into the promiscuous mode. Decode and display the packet summary or details, even if writing raw packet data using the -w option, and even if packet output is otherwise suppressed with -Q. Only true errors are displayed on the standard error. This outputs less than the -q option, so the interface name and total packet count and the end of a capture are not sent to stderr.
Read packet data from infile , can be any supported capture file format including gzipped files. It is possible to use named pipes or stdin - here but only with certain not compressed capture file formats in particular: those that can be read without seeking backwards.
Packets not matching the filter are not considered for future passes. Only makes sense with multiple passes, see For regular filtering on single-pass dissect see -Y instead. Note that forward-looking fields such as 'response in frame ' cannot be used with this filter, since they will not have been calculate when this filter is applied. Set the default snapshot length to use when capturing live data.
No more than snaplen bytes of each network packet will be read into memory, or saved to disk. A value of 0 specifies a snapshot length of , so that the full packet is captured; this is the default. If used before the first occurrence of the -i option, it sets the default snapshot length. If used after an -i option, it sets the snapshot length for the interface specified by the last -i option occurring before this option.
If the snapshot length is not set specifically, the default snapshot length is used if provided. It can be used with -j or -J to specify which protocols to include or with -x to include raw hex-encoded packet data.
If -P is specified it will print the packet summary only, with both -P and -V it will print the packet summary and packet details. If neither -P or -V are used it will print the packet details only. Example of usage to import data into Elasticsearch:. This file can be auto-generated with the command "tshark -G elastic-mapping".
Since the mapping file can be huge, protocols can be selected by using the option --elastic-mapping-filter:. For example,. It can be used with -j or -J to specify which protocols to include or with -x option to include raw hex-encoded packet data.
Example of usage:. It can be used with -j or -J to specify which protocols to include. This information is equivalent to the packet details printed with the -V option. Using the --color option will add color attributes to pdml output. These attributes are nonstandard. This information is equivalent to the information shown in the one-line summary printed by default.
This is the default. Use -Y to filter. Future versions of TShark may automatically change the capture format to pcapng as needed. Specify an option to be passed to a TShark module. Set the data link type to use while capturing packets. The values reported by -L are the values that can be used. If used before the first occurrence of the -i option, it sets the default capture link type. If used after an -i option, it sets the capture link type for the interface specified by the last -i option occurring before this option.
If the capture link type is not set specifically, the default capture link type is used if provided. Packets matching the filter are printed or written to file; packets that the matching packets depend upon e. Use this instead of -R for filtering using single-pass analysis. If doing two-pass analysis see -2 then only packets matching the read filter if there is one will be checked against this filter.
Get TShark to collect various types of statistics and display the result after finishing reading the capture file. Statistics are calculated independently of the normal per-packet output, unaffected by the main display filter. However, most have their own optional filter parameter, and only packets that match that filter and any capture filter or read filter will be used in the calculations.
Therefore you must not use the -q option, as that option would suppress the printing of the regular packet summary output, and must also not use the -V option, as that would cause packet detail information rather than packet summary information to be printed. Displayed information includes source and destination address and service type. Displayed information includes service type, object ID, and instance ID. Displayed information includes source and destination address, service type, and instance ID.
Displayed information includes source and destination address, object ID, and instance ID. Data collected is number of request messages with corresponding response of each CAMEL message type, along with the minimum, maximum, and average response time.
Calculate statistics for collectd. The gathered statistics are the number of collectd packets and the total number of value segments, along with the host, plugin, and type of the values. Create a table that lists all conversations that could be seen in the capture. The table is sorted according to the total number of frames. The report includes the packet number, the protocol that had that credential, the username and the password. For protocols just using one single field as authentication, this is provided as a password and a placeholder in place of the user.
Example: -z dcerpc,srt,abcd-efac,1. Calculate statistics on IPv4 destination addresses and the protocols and ports appearing on each address. This option enables extraction of most important diameter fields from large capture files.
Exactly one text line for each diameter message with matched diameter. Example: -z diameter,avp, extract default field set from diameter DWR messages. Example: -z diameter,avp, extract default field set from diameter CC messages. Several fields with same name within one diameter message are supported, e. Subscription-Id-Data or diameter. Note: tshark -q option is recommended to suppress default TShark output. Currently no statistics are gathered on unpaired messages. Create a summary of the captured DNS packets.
General information are collected such as qtype and qclass distribution. For some data as qname length or DNS payload max, min and average values are also displayed.
Create a table that lists all endpoints that could be seen in the capture. Example: -z expert,sip will show expert items of all severity for frames that match the sip protocol.
Example: -z "expert,note,tcp" will only collect expert items for frames that include the tcp protocol, with a severity of note or higher. The data sent by the second node is prefixed with a tab to differentiate it from the data sent by the first node.
Since the output in ascii or ebcdic mode may contain newlines, the length of each section of output plus a newline precedes each section of output. Example: -z "follow,tcp,hex,1" will display the contents of the second TCP stream the first is stream 0 in "hex" format.
Example: -z "follow,tcp,ascii, Unlike the individual statistics for each category that follow, this only prints a line for each message type that appears, instead of including lines for message types with a count of zero.
For each op code, the total number of invokes and results, along with the average and total bytes for invokes and results separately and combined is displayed. In the first column you get a list of H.
The number of occurrences of each message or reason is displayed in the second column. Example: use -z "h,counter,ip. Both IPv4 and IPv6 addresses are dumped by default. Addresses are collected from a number of sources, including standard "hosts" files and captured traffic. Resolution must be enabled, e. Calculate the HTTP packet distribution. Displayed values are the response status codes and request methods.
Calculate the HTTP requests and responses by server. Compute total ICMP echo requests, replies, loss, and percent loss, as well as minimum, maximum, mean, median and sample standard deviation SRT statistics typical of what ping provides. Example: -z icmp,srt,ip. Compute total ICMPv6 echo requests, replies, loss, and percent loss, as well as minimum, maximum, mean, median and sample standard deviation SRT statistics typical of what ping provides.
Example: -z icmpv6,srt,ipv6. Interval can be specified either as a whole or fractional second and can be specified with microsecond us resolution. If interval is 0, the statistics will be calculated over all packets.
If one or more filters are specified statistics will be calculated for all filters and presented with one column of statistics for each filter. Example: -z io,stat,1,ip. Example: -z "io,stat,0. The examples above all use the standard syntax for generating statistics which only calculates the number of packets and bytes in each interval. So: -z io,stat,0. Use -z io,stat,0. Also be aware that a field can exist multiple times inside the same packet and will then be counted multiple times in those packets.
COUNT - Calculates the number of times that the field name not its value appears per interval in the filtered packet list. Reports the total number of bytes that were transmitted bidirectionally in all the packets within a 10 millisecond interval. The specified field must be a named integer, float, double or relative time field.
For relative time fields, the output is presented in seconds with six decimal digits of precision rounded to the nearest microsecond. The specified field must be a relative time field that represents a response time. For example smb. For each interval the Queue-Depth for the specified protocol is calculated. A value of 1. The filter field is optional but if included it must be prepended with '' ''.
The following command displays five columns: the total number of frames and bytes transferred bidirectionally using a single comma, the same two stats using the FRAMES and BYTES subcommands, the total number of frames containing at least one SMB Read response, and the total number of bytes transmitted to the client unidirectionally at IP address Calculate statistics on IPv4 addresses, with source and destination addresses all grouped together.
Calculate statistics on IPv4 addresses, with source and destination addresses separated into separate categories. Calculate statistics on IPv6 destination addresses and the protocols and ports appearing on each address. Calculate statistics on IPv6 addresses, with source and destination addresses all grouped together. Calculate statistics on IPv6 addresses, with source and destination addresses separated into separate categories.
Calculate statistics on ISUP messages. Displayed information is message types and direction originating point code and destination point code. Example: -z "mac-lte,stat,mac-lte. This is similar to -z smb,srt. Example: -z megaco,rtd. Example: -z "megaco,rtd,ip. Example: -z mgcp,rtd. Example: -z "mgcp,rtd,ip. For each combination of originating point code, destination point code, and service indicator, calculates the total number of MSUs, the total bytes, and the average bytes per MSU.
No statistics are gathered on unpaired messages. Displays the total number of OSmux packets, and displays for each stream the number of packets, number of packets with the RTP market bit set, number of AMR frames, jitter analysis, and sequence number analysis.
Calculate statistics on packet lengths. Packets are grouped into buckets that grow exponentially with powers of two. Append all field values for the packet to the Info column of the one-line summary output. This feature can be used to append arbitrary fields to the Info column in addition to the normal content of that column. For a simple example to add the "nfs. You will get information about common messages and various counters for each UE that appears in the log.
Example: -z "rlc-lte,stat,rlc-lte. This option can only be used once on the command line. Example: -z rpc,srt,,3,nfs. Collect statistics for all RTP streams and calculate max. Calculate the RTSP packet distribution. Displayed values are the messages type, send type, and user status. Example: -z scsi,srt,0,ip. Activate a counter for SCTP chunks. This option will activate a counter for SIP messages.
Read filters in TShark , which allow you to select which packets are to be decoded or written to a file, are very powerful; more fields are filterablein TShark than in other protocol analyzers, and the syntax you can use to create your filters is richer.
As TShark progresses, expect more andmore protocol fields to be allowed in read filters. Packet capturing is performed with the pcap library.
The capture filter syntax follows the rules of the pcap library. This syntax is different from the readfilter syntax. A read filter can also be specified when capturing, and only packets that pass the read filter will be displayed or saved to the output file;note, however, that capture filters are much more efficient than read filters, and it may be more difficult for TShark to keep up with a busy network ifa read filter is specified for a live capture.
A capture or read filter can either be specified with the -f or -R option, respectively, in which case the entire filter expression must bespecified as a single argument which means that if it contains spaces, it must be quoted , or can be specified with command-line arguments after the optionarguments, in which case all the arguments after the filter arguments are treated as a filter expression.
Capture filters are supported only when doing a livecapture; read filters are supported when doing a live capture and when reading a capture file, but require TShark to do more work when filtering, so you mightbe more likely to lose packets under heavy load if you're using a read filter.
If the filter is specified with command-line arguments after the optionarguments, it's a capture filter if a capture is being done i. If thisoption is used together with the -b option, TShark will stop writing to the current capture file and switch to the next one if filesize is reached. Whenreading a capture file, TShark will stop reading the file after the number of bytes read exceeds this number the complete packet will be read, so morebytes than this number may be read.
The created filenames are based on the filename given with the -w option, the number of the file and on the creation date and time, e. With the files option it's also possible to form a 'ring buffer'. This will fill up new files until the number of files specified, at which point TShark will discard the data in the first file and start writing to that file and so on. If the files option is not set, new files filled upuntil one of the capture stop conditions match or until the disk if full.
Example: -d tcp. Using an invalid selector or protocol will print out a list of valid selectors and protocol names, respectively. Example: -d ethertype0x Print a list of the interfaces on which TShark can capture, and exit.
For each network interface, a number and an interface name, possibly followedby a text description of the interface, is printed. The interface name or the number can be supplied to the -i option to specify an interface on whichto capture. Note that 'can capture' means that TShark was able to open that device to do a live capture. Depending on your system you may need to run tshark froman account with special privileges for example, as root to be able to capture network traffic.
If TShark -D is not run from such an account, it willnot list any interfaces. Giving a protocol rather than a single field will print multiple items of data about the protocol as a single field. Fields are separated by tab charactersby default. Defaults to n. Otherwise any character that can be accepted by the command line as part of the option may be used. Network interface names should match one of the names listed in ' tshark -D ' described above ; a number, as reported by ' tshark -D ', can alsobe used.
If you're using UNIX , ' netstat -i ' or ' ifconfig -a ' might also work to list interface names, although not all versionsof UNIX support the -a option to ifconfig. If no interface is specified, TShark searches the list of interfaces, choosing the first non-loopback interface if there are any non-loopbackinterfaces, and choosing the first loopback interface if there are no non-loopback interfaces.
If there are no interfaces at all, TShark reports anerror and doesn't start the capture. Pipe names should be either the name of a FIFO named pipe or '-' to read data from the standard input. Data read from pipes must be instandard libpcap format. Flush the standard output after the information for each packet is printed.
This is not, strictly speaking, line-buffered if -V was specified;however, it is the same as line-buffered if -V wasn't specified, as only one line is printed for each packet, and, as -l is normally used whenpiping a live capture to a program or script, so that output for a packet shows up as soon as the packet is seen and dissected, it should work just as well astrue line-buffering. List the data link types supported by the interface and exit.
The reported link types can be used for the -y option. Don't put the interface into promiscuous mode. Note that the interface might be in promiscuous mode for some other reason; hence, -p cannot beused to ensure that the only traffic that is captured is traffic sent to or from the machine on which TShark is running, broadcast traffic, andmulticast traffic to addresses received by that machine.
When capturing packets, don't display the continuous count of packets captured that is normally shown when saving a capture to a file; instead, justdisplay, at the end of the capture, a count of packets captured. On systems that support the SIGINFO signal, such as various BSDs, you can causethe current count to be displayed by typing your 'status' character typically control-T, although it might be set to 'disabled' by default on at least someBSDs, so you'd have to explicitly set it to use it.
This information is equivalent to the packet detailsprinted with the -V flag. This information is equivalent to theinformation shown in the one-line summary printed by default. This is the default. Cause TShark to print a view of the packet details rather than a one-line summary of the packet.
NOTE: -w provides raw packet data, not text. If you want text output you need to redirect stdout e. Note that the -z proto option is different - it doesn't cause statistics to be gathered and printed when the capture is complete, it modifies theregular packet summary output to include the values of fields specified with the option. Therefore you must not use the -q option, as that option wouldsuppress the printing of the regular packet summary output, and must also not use the -V option, as that would cause packet detail information ratherthan packet summary information to be printed.
Example: use -z dcerpc,rtt,abcd-efac,1. This option can be used multiple times on the command line. If the optional filterstring is provided, the stats will only be calculated on those calls that match that filter. Example: use -zdcerpc,rtt,abcd-efac,1. Create Protocol Hierarchy Statistics listing both number of packets and bytes. If no filter is specified the statistics will be calculated for allpackets.
If a filters is specified statistics will be only calculated for those packets that match the filter. Intervals can be specified either as whole or fractionalseconds. Interval can be specified in ms resolution. If Interval is 0, the statistics will be calculated over all packets.
If no filter is specified the statistics will be calculated for all packets. If one or more filters are specified statistics will becalculated for all filters and presented with one column of statistics for each filter. Example: -z io,stat,1,ip. Example: -z 'io,stat,0. The examples above all use the standard syntax for generating statistics which only calculates the number of packets and bytes in each interval.
So: -z io,stat,0. Use -z io,stat,0. Also be aware that a field can existmultiple times inside the same packet and will then be counted multiple times in those packets.
NOTE: A second important thing to note is that the system setting for decimal separator is set to '. If it is set to ',' the statisticswill not be displayed per filter. It will count how many times this particular field isencountered in the filtered packet list. Example: -z io,stat,0. This will sum together every occurence of this fields value for eachinterval. If the field is a relative time field the output will be presented in seconds and three digits after thedecimal point.
The resolution for time calculations is 1ms and anything smaller will be truncated. Viewed 7k times. Improve this question. Add a comment. Active Oldest Votes. Improve this answer. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
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