nemesis-ospf(1)

nemesis-ospf1

Ospf protocol (the nemesis project)

Usage

nemesis-ospf [-vZ] [optlist]

Overview

The Nemesis Project is designed to be a command line-based, portable human IP stack for UNIX-like and Windows systems. The suite is broken down by protocol, and should allow for useful scripting of injected packets from simple shell scripts.

OSPF Packet Types

-p OSPF Protocol (-pH, -pL, -pR)

Hello (-pH), Database Description (-pD), Link State Request (-pL), Link State Update (-pU), Router Links Advertisement (-pR), Network Links Advertisement (-pN), IP Summary Links Advertisement (-pM), AS External Link Advertisement (-pA),

OSPF HELLO options

-N Neighbor Router Address

Neighbor Router Address.
-i Dead Router Interval

Dead Router Interval.
-l OSPF Interval

OSPF Interval.

OSPF Database Description (DBD) options

-z MAX DGRAM Length

OSPF Maximum Datagram Length
-x Exchange Type

OSPF DBD Exchange Type

OSPF Link State Update (LSU) options

-x Num LSAs to bcast

Number of Link State Advertisements to broadcast

OSPF Link State Advertisement (LSA) related options

-L Router ID Router ID for Link State Advertisement packets.

-G LSA Age

Link State Advertisement Age.

OSPF Router Links Advertisement (LSA_RTR) options

-u LSA_RTR Number Router Links Advertisement Number

-y LSA_RTR Router Type

Router Links Advertisement Router Type
-k LSA_RTR Router Data

Router Links Advertisement Router Data

OSPF Autonomous System External Link Advertisement (LSA_AS_EXT) options

-f LSA_AS_EXT Forward Address Autonomous System Forward Address

-g LSA_AS_EXT Tag

Autonomous System Tag

OSPF options

-m OSPF Metric OSPF Metric

-s OSPF Sequence Number

OSPF Sequence Number

-r OSPF Advertising Router Address

OSPF Advertising Router Address

-n OSPF Netmask

OSPF Netmask Address

-O OSPF Options

OSPF Options

-R OSPF Router ID

OSPF Router Identifier

-A OSPF Area ID

OSPF Area Identifier

-P Payload File

Filename to read for packet payload.

Display the injected packet in human readable form. Use twice to see a hexdump
-v verbose-mode

of the injected package with printable ASCII characters on the right. Use three times for a hexdump without decoded ASCII.

Options

-D destination-IP-address

Specify the destination-IP-address within the IP header.

-F fragmentation-options (-F[D],[M],[R],[offset])

Specify the fragmentation options:

-FD (don't fragment)
-FM (more fragments)
-FR (reserved flag)
-F <offset>

within the IP header. IP fragmentation options can be specified individually or combined 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 fragments (MF) and the reserved flag (RESERVED or RB) are 1-bit fields.

NOTE: Under normal conditions, the reserved flag is unset.

-I IP-ID

Specify the IP-ID within the IP header.

-O IP-options-file

This will cause nemesis-ospf to use the specified IP-options-file as the options when building the IP header for the injected packet. IP options can be up to 40 bytes in length. The IP options file must be created manually based upon the desired options. IP options can also be read from stdin by specifying '-O -' instead of an IP-options-file.

-S source-IP-address

Specify the source-IP-address within the IP header. 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 IP-TTL

Specify the IP-time-to-live (TTL) within the IP header.

Options

-d Ethernet-device

Specify the name (for UNIX-like systems) or the number (for Windows systems) of the Ethernet-device to use (eg. fxp0, eth0, hme0, 1).

-H source-MAC-address

Specify the source-MAC-address (XX:XX:XX:XX:XX:XX).

-M destination-MAC-address

Specify the destintion-MAC-address (XX:XX:XX:XX:XX:XX).

-Z list-network-interfaces

Lists the available network interfaces by number for use in link-layer injection.

NOTE: This feature is only relevant to Windows systems.

Diagnostics

Nemesis-ospf returns 0 on a successful exit, 1 if it exits on an error.

Releases

4 releases since Debian 3.0 (Woody); the text changed 2 times.

  1. 3.0
  2. 3.1–4.0
  3. 5.0

-D since Debian 3.1 (Sarge); -H since Debian 3.1 (Sarge); -I since Debian 3.1 (Sarge); -M since Debian 3.1 (Sarge); -O since Debian 3.1 (Sarge); -S since Debian 3.1 (Sarge); -T since Debian 3.1 (Sarge); -Z since Debian 3.1 (Sarge); -d since Debian 3.1 (Sarge); -v since Debian 5.0 (Lenny).