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- September 1, 1993
-
- Title: Documentation for SNOOP, an Ethernet data snooper
- Written by: Rahner James
- Copyright (c) September 1993, Ryu Consulting
- 8476 Oakwind Court
- Orangevale, CA 95662
- (916) 722 - 1939
- (BBS) 722 - 1984
-
-
- Purpose
- --------
- This is a simple document that will allow you to use SNOOP, the
- Ethernet data snooper for NE-2000 compatible interface boards.
- A more complete description is provided with the paid version.
- Additionally, an ODI compatible SNOOP is available with the paid
- version.
-
-
- Semi-legal Stuff
- -----------------
- This program may be used for any non-commercial purpose. It has
- been released to demonstrate the real version. It does not have
- to work. It is distributed "as is", so there is no implied or
- directly stated warranty. If it makes your system freeze up and
- die, well tough. Don't blame Ryu Consulting or Rahner James,
- because we told ya so. Don't expect us to support it, unless
- you have cold hard cash.
-
-
- Environment Requirements
- -------------------------
- NE-2000 network interface controller or one of it's many clones
- running on an 80286 or higher.
- EGA or VGA adapter with a color monitor advisable.
-
-
- Introduction
- -------------
- SNOOP allows the user to look at the data traffic on an Ethernet
- network. It is aimed specifically at a Novell Netware network
- although it will work with other network operating systems.
-
- I wrote this program to monitor and analyze the network traffic in
- real-time. I have worked with other sniffers and snoopers and
- have generally been disappointed. They have all these fancy dials
- and switches, and all I really wanted was to know what was being
- sent from one node to another.
-
- SNOOP allows you to view data packets in real-time, with minimal
- packet loss only in very high traffic environments. It allows
- the user to write the packets to a file, view previously stored
- packets and print them on a printer. It allows the user to select
- which nodes are being monitored and which sockets.
-
- Heavy traffic on a network can be overwelming for SNOOP if it is
- run on a slow machine (particularly if file logging is turned on).
- If this happens, try setting the real-time viewing mode to 1 or 2,
- or run SNOOP on your fastest system and log to a RAM disk.
-
-
- Program Execution
- ------------------
- SNOOP is run from MS-DOS with the following command line syntax:
-
- SNOOP [options]
-
- where [options] is a list of options to modify SNOOP's execution.
- If you want to run with the defaults, just type:
-
- SNOOP
-
- The default running parameters are:
-
- IRQ 11
- Base port address 300h
- Look at all packets
-
- The command line options are as follows (case insensitive):
-
- ? - command list
- Lists the available command line options. This does not run the
- program.
-
-
- F - source node address
- Allows the user to access packets being transmitted from a specific
- node ID. Assume that you wanted to see packets coming from node IDs
- 0080C8205D73 and 0080C8205F26, you would use the following command
- line:
-
- SNOOP F0080C8205D73 F0080C8205F26
-
- Up to ten source node addresses may be specified.
-
-
- T - destination node address
- Allows the user to access packets being transmitted to a specific
- node ID. Assume that you wanted to see packets going to node IDs
- 0080C8205D73 and 0080C8205F26, you would use the following command
- line:
-
- SNOOP T0080C8205D73 T0080C8205F26
-
- Up to ten destination node addresses may be specified.
-
-
- A - node address
- Allows the user to access packets being transmitted to or from a
- specific node ID. Assume that you wanted to see packets being sent
- to and from nodes IDs 0080C8205D73 and 0080C8205F26, you would use
- the following command line:
-
- SNOOP A0080C8205D73 A0080C8205F26
-
- Up to ten node addresses may be specified.
-
-
- B - set base port
- Sets the base port address of the NE-2000. The number must be in
- hexadecimal. The default base port address is 320h. This is not
- usual, but it is the one I use for my develop systems, that way I
- can have one NE-2000 attached to the network and another NE-2000
- to use for snooping on the same system. If you want to use base
- port 300h, use the following command line:
-
- SNOOP B300
-
-
- I - interrupt number
- Sets the IRQ number to use for the NE-2000. This number must be
- in decimal. The default setting is 11. To set IRQ-15, for example,
- use the following command line:
-
- SNOOP I15
-
-
- O - ignore IPX TSR
- Normally, when SNOOP starts up, it checks to make sure IPX is not
- currently loaded (except with the R option). If only one NE-2000
- is being used, SNOOP can not be run with IPX.COM loaded. If you
- wish to circumvent this check, use the following command line:
-
- SNOOP O
-
-
- R - read file
- Allows the user to read and view a previously logged file. The
- file will be loaded and the user may page through the packets
- and send them to a printer. If no filename is specified, this
- option will read the file PACKETS.DAT. To view a previously
- logged file called, GEORGE.PAK, use the following command line:
-
- SNOOP RGEORGE.PAK
-
- This option does not access the NE-2000 regardless of any other
- command line options. Only one file may be viewed at a time.
-
-
- S - socket
- Allows the user to specify which sockets are to be accessed.
- In order to access packets on sockets 5000h and 451h, the
- following command line would be used:
-
- SNOOP S5000 S451
-
- This option can be used in conjunction with the A, F and T options
- to further specify the packets that you wish to access. If no
- sockets are defined, all sockets are viewed. Up to ten sockets
- may be specified. This is disabled in the non-paid version.
-
-
- W - write packet file
- Allows the user to specify a file to create and write any accessed
- packets. For example, to write data packets to the file JOE.NVL,
- the following command line syntax would be used:
-
- SNOOP WJOE.NVL
-
- If no filename is specified, the file PACKETS.DAT will be used.
- This option will overwrite any file of the name specified without
- warning the user, so be careful with your name selection. DO NOT
- WRITE PACKETS TO A NETWORK DRIVE OR YOU WILL REGRET IT. DATA
- DEATH MAY OCCUR. DON'T DO IT!!!! I REALLY MEAN IT!!!
-
-
- Keys Accepted During Real-time Monitoring (case sensitive)
- -----------------------------------------------------------
-
- ? or F1
- Shows the user a list of the acceptable key commands.
-
- 1 - show counts
- Shows the user the current packet counts and various statistics.
- This is a good display method if there is a possiblity of not
- logging all the packets.
-
-
- 2 - show lines
- Displays single line entries for all the packets coming in.
- This is a good display method if there is a possiblity of not
- logging all the packets.
-
-
- 3 - full packet display
- Allows the user to view the entire packet (depending on screen
- size). This tends to slow the logging process down, so in a
- high traffic environment, it is not the best display if you are
- logging packets.
-
-
- c - clear display
- If the display gets messy, use this key to initialize it.
-
-
- l - start logging
- Start logging packets to a file. Uses file specified by the 'W'
- option or PACKETS.DAT if none was specified.
-
-
- s - stop logging
- Stops file logging and closes the file. If the logging is reopened,
- this file will be overwritten.
-
-
- Keys Accepted During File Viewing (case sensitive)
- ---------------------------------------------------
-
- UP arrow
- Moves up one page in the packet buffer display.
-
- DOWN arrow
- Moves down one page in the packet buffer display.
-
- LEFT arrow
- Moves down one byte in the packet buffer display.
-
- RIGHT arrow
- Moves up one byte in the packet buffer display.
-
- HOME
- Moves to the first packet in the file.
-
- END
- Moves to the last packet in the file.
-
- PGUP
- Moves back one packet in the file.
-
- PGDN
- Moves forward one packet in the file.
-
- 0
- Allows the user to set the timer base at 0 for a particular
- packet. All other packet times will be displayed relative to
- that time.
-
- /
- Allows the user to display the packet times in microseconds
- or milliseconds. The timer is a very rough estimate and should
- only be used to get a rough idea of the exact time of each
- packet received. In the microsecond range, the timer display
- is in 1.119 microseconds. The millisecond range is 1024 times
- that value.
-
- E or e
- Allows the user to move to specific packet number.
-
- P or p
- Prints the currently displayed packet. This is defeated in the
- non-paid version.
-
- S or s
- Search forward (S) or backward (s) for a specific NCP packet.
- Very handy for checking out specific processes.
-
- T or t
- Allows the user to move to a packet time value.
-
- ^L (that's control-L)
- Purges the print buffer. This is primarily to get the print
- server to spit out the current page.
-
-
- Conclusion
- -----------
- Well, there are other things about the program, but you will have
- to browse through it and see for yourself. The format may be a
- little busy at first, but you will get used to it fairly quickly.
-
-
- If you would like to get rid of the signon and enable all the
- options, send US$95.00 to:
-
- Ryu Consulting
- 8476 Oakwind Court
- Orangevale, CA 95662
-
- Checks payable to: Ryu Consulting
- Handling/shipping is included.
- Outside US, add US$15.00
-