Category: Networking

How to Discover Active Ports on a Windows Machine

PS C:\Users\kimconnect> get-nettcpsetting | select SettingName,DynamicPortRangeStartPort,DynamicPortRangeNumberOfPortsSettingName DynamicPortRangeStartPort DynamicPortRangeNumberOfPorts----------- ------------------------- -----------------------------AutomaticInternetCustom 49152 16384DatacenterCustom 49152 16384Compat 49152…

PortQuery GUI Version

It's always a good idea to verify that there's nothing on the network and application…

RJ45 Ethernet & RJ11 Telephone Cables

There are three options to Ethernet cable wiring: T568-A, T568-B, and cross-over. AT&T & other…

Sample Port Mappy in the Year of 66203545 A.D.

Building:  Marketing Division Notice: Blanks next to Patch ID means they were not found. Patch…

Function to Import PortQry (a Systernal Utility)

Update: much adieu about nothing. Run this quick script and ignore the prior jibberish: if…

Install Remote Desktop on Lubuntu & Wireshark

Update May 2020: Current versions of Ubuntu / Redhat 20.04 contain broken xrdp packages. Thus,…

Storage & Transfer Speed Unit of Measurement

Intro What's all this talk about bits and bytes? Why do hard drive manufacturers measure…

Common Windows Ports and Services

Port Protocol Application protocol System service name n/a GRE GRE (IP protocol 47) Routing and…

Network Dual Routers

Netopia 4622 interfaces:- Outside 66.x.x.221- Inside 66.x.x.97 /29- Config: NAT off, DHCP on (serving only…

Public DNS servers

Free Public DNS ServersService provider: ScrubItPublic dns server address:* 67.138.54.100* 207.225.209.66Service provider:OpenDNSOpenDNS free dns server…

Bandwidth Calculator

Convert Kbps to GB/month Formula =A2*60*60*24*30/8/1000/1000 (use Excel) ------------------------------------------------ 20000 Kbps = 6480 Gb/month 950…

CCIE Exam Day Overview

1. Network Principles 2. Layer 2 Technologies: LAN switching & WAN Circuits, layer 2 multicast…

How to migrate DNS Server

The Windows Server 2012 wizard normally performs this task automatically. Thus, the following steps may…

How to set UniFi controller as a Windows service

Download the software: https://www.ui.com/download/unifi/ Close any instances of the UniFi software on the controller Open…

SonicWall Setup Notes

Initialization: Reset device and access it via 192.168.168.168 (default), default login is Admin/password Check firmware…

How to migrate DHCP Server

1. Run these commands on the existing DHCP server (currently Windows Server 2003)net stop dhcpservercd…

Juniper Configuration

Piece of cake - no need to write anything here.

IP Address Summarization

Requirements: - 8+ subnets per site - 3+ sites - 500+ IPs per subnet -…