Provided by: t50_5.8.3-2_amd64 bug


       T50 - network packet injector


       t50 [options] [--] host[/CIDR]


       Experimental mixed packet injector tool.

       This is NOT a DoS tool, but a tool to inject packets using various protocols.


              The host address is the target of T50. It can be informed in one of two formats: IP
              address or URI name. This address can be informed as a range of  IPs  (by  omitting
              one  or  mode  octects)  or using a CIDR separating the IP (full or partial) or URI
              with "/##", for instance: "192.168/16" or "". When using a partial
              IP  address  T50 will calculate CIDR automatically (8, 16 or 24 bits, if the first,
              second or third octect [from right to left] are omitted, respectively).

              Notice that, sometimes, the "host[/CIDR]" argument is misinterpreted as an  option.
              When this happens, you can use the pseudo option '--' before the host address:

              # t50 --flood --

              Also, to avoid this error you can provide the host address as the first argument.

              Notice, also, ONLY IPv4 addresses are allowed. T50 don't provide IPv6 support yet.

       --threshold NUM
              Number of packets to inject (default 1000).

              Keep  injecting packets until user terminates the process (^C). Cannot be used with

       -B, --bogus-csum
              Use a bogus "random " checksum instead of calculating the actual packet checksum.

              Inject packets faster (creates a child process).

              When used with T50 "protocol", it will shuffle the available  protocols.  Otherwise
              they  will  be sent in the same order as listed with --list-protocols option.  This
              option will not work with any other "protocol".

       -s, --saddr ADDR
              IP header source address (default RANDOM).

       -p, --protocol protoname
              Select an specific protocol to use (default: TCP. Use --list-protocols to  see  all
              protocols  available).  Use T50 if you want to inject all available protocols.  The
              "protocolname" is case insensitive.

       -h, --help
              Display all available options and their defaults.

       -v, --version
              Display t50 version.

       -l, --list-protocols
              Lists all available protocols T50 can provide.


       See all available protocols:

              # t50 -l
              T50 Experimental Mixed Packet Injector Tool 5.6.15
              Originally created by Nelson Brito <>
              Previously maintained by Fernando Mercês <>
              Maintained by Frederico Lamberti Pissarra <>

              [INFO]  List of supported protocols (--protocol):
                 1 - ICMP (Internet Control Message Protocol)
                 2 - IGMPv1 (Internet Group Message Protocol v1)
                 3 - IGMPv3 (Internet Group Message Protocol v3)
                 4 - TCP  (Transmission Control Protocol)
                 5 - EGP  (Exterior Gateway Protocol)
                 6 - UDP  (User Datagram Protocol)
                 7 - RIPv1  (Routing Internet Protocol v1)
                 8 - RIPv2  (Routing Internet Protocol v2)
                 9 - DCCP (Datagram Congestion Control Protocol)
                 10 - RSVP  (Resource Reservation Protocol)
                 11 - IPSEC (Internet Security Protocl (AH/ESP))
                 12 - EIGRP (Enhanced Interior Gateway Routing Protocol)
                 13 - OSPF  (Open Shortest Path First)

       Send 500 packets to a single target:

              # t50 --threshold 500

       Flooding targets from to  (notice  the  partial  IP)  with  TCP

              # t50 192.168.0 --flood

       Flooding targets from to with all protocols T50 can provide in
       a random order using "Turbo" mode.

              # t50 192.168 --flood -p t50 --shuffle --turbo


       Root privilege is mandatory to run t50.

       There are lots of options. Please, use -h or --help to see them and their default values.


       As noted before, the "host[/CIDR]" argument sometimes  is  misinterpreted  as  an  option.
       This  bug  was  introduced  when  the argument parser was changed to support flexible host
       "names".  Someday I'll correct this (Frederico).


       Nelson Brito


       Fernando Mercês
       Frederico Lamberti Pissarra


       The latest release of the  source  code  can  be  downloaded  at:  T50  GitLab  Repository
       ⟨⟩.  You  can also report bugs there or at t50-dev
       google group via (but gitlab's is preferable!).


       Copyright © 2014-2018 T50 developers.   Licensed  GPLv3+:  GNU  GPL  version  3  or  later
       <>.   This  is  free  software: you are free to change and
       redistribute it. There is NO WARRANTY, to the extent permitted by law.