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NAME nemesis-udp -- UDP Protocol (The Nemesis Project) SYNOPSIS nemesis-udp [-v6Z?] [-d IFNAME] [-c COUNT] [-D ADDR] [-F OPT] [-H MAC] [-I ID] [-i INTERVAL] [-M MAC] [-O FILE] [-P FILE] [-S ADDR] [-t TOS] [-T TTL] [-x PORT] [-y PORT] DESCRIPTION nemesis is designed to be a command line-based, portable human IP stack for UNIX-like and Windows systems. The suite is broken down by proto- col, and should allow for useful scripting of injected packets from simple shell scripts. nemesis-udp provides an interface to craft and inject UDP packets al- lowing the user to specify any portion of a UDP packet as well as lower-level IP packet information. GENERAL OPTIONS -6 Use IPv6. When enabled, the -S ADDR and -D ADDR options are expected to be IPv6 addresses. -c COUNT Number of packets to send, default: 1. -i INTERVAL Seconds between repeatedly sent packets, only available if -c is given. -v Display the injected packet in human readable form. Use twice to see a hexdump of the injected packet with printable ASCII characters on the right. Use three times for a hexdump without decoded ASCII. UDP Options -P FILE This will cause nemesis-udp to use the specified payload file as the payload when injecting UDP packets. For packets in- jected using the raw interface (where -d is not used), the max- imum payload size is 65415 bytes. For packets injected using the link layer interface (where -d IS used), the maximum pay- load size is 1380 bytes. Payloads can also be read from stdin by specifying `-P-' instead. Windows systems are limited to a maximum payload size of 1380 bytes for UDP packets. -x PORT Specify the source port within the UDP header. -y PORT Specify the destintion port within the UDP header. IP OPTIONS -D ADDR Specify the destination IP address within the IP header. -S ADDR Specify the source IP address within the IP header. IPv4 OPTIONS -F OPT Specify the fragmentation options in the IP header: -FD don't fragment -FM more fragments -FR reserved flag -F offset IP fragmentation options can be specified individually or com- bined into a single argument to the -F command line switch by separating the options with commas (eg. -FD,M) or spaces (eg. -FM 223). The IP fragmentation offset is a 13-bit field with valid values from 0 to 8189. Don't fragment (DF), more frag- ments (MF) and the reserved flag (RESERVED or RB) are 1-bit fields. NOTE: Under normal conditions, the reserved flag is unset. -I ID Specify the IP ID within the IP header. -O FILE This will cause nemesis-udp to use the specified IP options file as the options when building the IP header for the in- jected packet. IP options can be up to 40 bytes in length. The IP options file must be created manually based upon the de- sired options. IP options can also be read from stdin by spec- ifying -O- instead. -t TOS Specify the IP type of service (TOS) within the IP header. Valid type of service values: 2 Minimize monetary cost 4 Maximize reliability 8 Maximize throughput 24 Minimize delay NOTE: Under normal conditions, only one type of service is set within a packet. To specify multiple types, specify the sum of the desired values as the type of service. -T TTL Specify the IP time-to-live (TTL) in the IP header. IPv6 OPTIONS -H LIMIT Set hop limit, similar to IPv4 TTL, max 255. DATA LINK OPTIONS -d IFNAME Specify the name (for UNIX-like systems) or the number (for Windows systems) of the IFNAME to use (eg. fxp0, eth0, hme0, 1). -H MAC Specify the source MAC address, (XX:XX:XX:XX:XX:XX). -M MAC Specify the destination MAC address, (XX:XX:XX:XX:XX:XX). -Z Lists the available network interfaces by number for use in link-layer injection. NOTE: This feature is only relevant to Windows systems. DIAGNOSTICS nemesis-udp returns 0 on a successful exit, 1 if it exits on an error. SEE ALSO nemesis-arp(1), nemesis-dhcp(1), nemesis-dns(1), nemesis-ethernet(1), nemesis-icmp(1), nemesis-igmp(1), nemesis-ip(1), nemesis-ospf(1), nemesis-rip(1), nemesis-tcp(1). AUTHORS Mark Grimes <mark@stateful.net> and Jeff Nathan <jeff@snort.org> BUGS Please report at https://github.com/libnet/nemesis/issues Jul 20, 2021 nemesis-udp(1)
NAME | SYNOPSIS | DESCRIPTION | GENERAL OPTIONS | UDP Options | IP OPTIONS | DATA LINK OPTIONS | DIAGNOSTICS | SEE ALSO | AUTHORS | BUGS
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