Network GUI tool (SNMP MIB browser/ARP)

MIB Browser (SNMP MIB variables) - freeware

SNMP & MID tools - freeware

Realtime SNMP TrafficGrapher v1.45

Canonical MAC address converter

Microsoft MAC address/binding order, given computer name

Adjust MTU for Win 95/NT - Dialup ISP Utility

Netstat - TIME_WAIT information/process

Display Web server HTTP Headers - RFC2068

Dumps endpoint mapper database

NeoTrace Tool - Display Internet routes/time

Trace Route Tool - customizable options

IP, SNMP and NetBIOS scanner - freeware

3D Transit Times Trace Route w Port Scanner

Detailed listing of all TCP/UDP endpoints (netstat)

NT/2K File System Monitor - real time

Pings and graphs an endpoint

GUI real-time traffic display w IP ports & hit count

Measure TCP throughput through an IP path

WAN BANDWIDTH measurement (server/client)

Measures real-time speed of your Internet connection

Monitor and test the end-to-end network performance

Dotless IP Address Calculator (12 formats)

AppleTalk utility to retrieve network information

NetBIOS scanner, formatted nbtstat with address ranges

NetBIOS scanner (name/attributes) - command line

IPXPING command line tool (network:host)

Multicast (send/receive) command utility

Create/Send TCP/IP & ICMP packets - command line

Reads ADSL/Cable NAT router logs - AMIT chipsets

MAC Address spoofing tool / IP protocol adjustments

Microsoft Network Monitor 3.0 - Vista supported

IP Subnet Calculator - WildPackets

IP Subnet Calculator - Lucent

IP Subnet Calculator - 3Com

Telnet protocol RFC854 + Options

Telnet command byte values

IANA Multicast IP addresses - RFC1112

SMTP Reply Codes - RFC821

Frame-Relay Documentation - Cisco

TCP/IP Socket Monitor Tool via server list

Sam Spade - General-purpose IP utility package

IP Tools - 19 TCP/IP utilities (KS-Soft)

Determine your true internal/external IP Address (LAN / WAN)

USR 56Kbps Modem Command/Technical Guide (PDF)

TCP Test Tool - Simple Com Tools

UDP Test Tool - Simple Com Tools

COM Port Inspector - Simple Com Tools

COM Device Initializer - Simple Com Tools

SMTP Test Tool - Simple Com Tools

What's Up - FTP v6

FileZilla - FTP Client - open source

FileZilla - FTP Server - open source

Quality of Service (QoS) - DiffServ Code Point (DSCP) 6 bits (2^6) = 64 values

Cisco VTP (VLAN Trunking Protocol) layer-2 messaging

Spanning Tree Protocol (BPDU process) - Shockwave

Adjust TCP/IP registry - TCP Receive Window and MaxMTU size

LAN Network settings

Tcp Receive Window (RWIN):

     64240 for 10mb or less

   128480 for 10-20mb

   256960 for over 20mb
Path MTU Discovery: YES
MTU: 1472

Optimal Settings for Satellite Return (Two-Way) Systems
Tcp Receive Window (RWIN): 224360
Window Scaling: YES
Time Stamping: NO
Selective Acks: YES
Path MTU Discovery: YES
Black Hole Detection: NO
Max Duplicate Acks: 3
TTL: 64
MTU: 1500

You must reboot for these changes to take effect!

Wireshark Network Analyzer w WinPcap v4 - freeware

Wireshark Wiki - Docs, Reference, Miscellaneous

WinPcap packet capture library v3.1 beta4 (based on libpcap)

TCPDump man file - syntax

Capture Filter syntax & examples

Various Basic / SMTP filter strings - syntax & examples

NetTerm Dialer/Terminal/Telnet Client v4.2 - InterSoft

SSH Client - per F5 Support v1.4

SSH1/2, Telnet/SSL Client - SecureCRT (VanDyke)

PuTTY (SSH/Telnet Client) v0.60 - freeware

HyperTerm Private Edition v6.3

WinNT GUI Telnet client for Win2K OS - Q253918 MSKB

UDP-based VPN p2p Windows client

Citrix MetaFrame client - Windows 32-bit

SSH Sentinel - version 1.4 (freeware)

NCP Secure Entry client - Trial version 2.0

Network Infrastructure Parser - open source

(command line execution, parsers device configuration text

into a security or configuration report)