Telecommunications Consulting Services
Consulting Services from Network Design to Project Management
Check Out our Consulting Services
Internetworking Training Experts
Training and Learning Services focused on the technology that makes the Internet work.
Check Out our Learning Services
Wireshark Experts
Packet analysis expertise is critical in today's networks, and being able to use the best packet analyzer application is a skill we can help you and your team attain.
View Our Wireshark Classes
Are you a Network Scientist?
If you are just getting started in networking or you have been in the industry/technology for years you know there is so much to learn and so much to explore in networking technologies. Explore our vast collection of articles and reading.
Read More
Online Certification Training
Find out about our Network Self Certification Program for Rural Service Providers at the Online School of Network Sciences
Check Out Our Program at our Online School

Welcome to our home on the Internet, where we can not only share information, but also interact with each other. If you are a visitor to the site, there are a number of things to view: our FAQ’sNetworking and Computing Tips, our CellStream Blog, and other fun reading can all be found in the drop down menus above.  The Training menu provides access to our coursesour course calendar, and learning services.  The Consulting Menu provides information on our consulting services and a place to meet our consulting and teaching team.  Registered CellStream folks and our clients will log in using their private credentials to access projects, calendars and discussions.

Thanks for visiting! We always welcome comments and suggestions.  You can also join our Discord Server here!

Windows Essential Repair Commands

Post Views: 89 The following commands are like a cheat sheet of essential Windows repair commands. DO NOT USE THESE UNLESS YOU KNOW WHAT YOU ARE DOING. RESEARCH EVERY ONE OF THESE COMMANDS BEFORE EXECUTING. BACK UP YOUR SYSTEM PROPERLY. Command Purpose sfc /scannow Scans and Repairs corrupted or missing system files with the System

Read More »

Does Starlink Support IPv6?

Post Views: 186 Great question. The short answer is Yes – Starlink supports IPv6. Starlink is fully dual stack when it comes to IPv4 and IPv6 addressing. It is IPv6 capable and supports native IPv6 connectivity across all its routers, kit versions, and service plans. This includes the allocation of a /56 IPv6 prefix via

Read More »

What is CGNAT?

Post Views: 127 Carrier-Grade NAT (CGNAT), also known as Large Scale NAT (LSN), is a network technology used by Internet Service Providers (ISPs) to extend the usability of the limited IPv4 address space by sharing a small pool of public IPv4 addresses among many customers. Why CGNAT Exists How CGNAT Works Technical Characteristics Challenges/Problems with

Read More »

Was Moore Correct in “Moore’s Law”?

Post Views: 187 Moore’s Law is an observation made by Gordon E. Moore, co-founder of Intel, in 1965. He noted that: The number of transistors on a microchip doubles approximately every two years, while the cost of computers is halved. This effectively meant exponential growth in computing power and a decrease in relative cost over

Read More »

What it Takes to Network ShowNet

Post Views: 95 Ever wonder what it takes to network an industry showcase like ShowNet? ShowNet is a large-scale demonstration network built annually since 1994. It showcases cutting-edge networking technologies and provides stable internet connectivity throughout the exhibition floor. Over 400 engineers from academia and industry collaborate to design, deploy, and operate this network, utilizing

Read More »

How To Find the IP Address of a Web Site

Post Views: 207 Hi everyone.  This relatively easy question came in today: “How do I find out the IP address of a particular web site?” The simplest way that most folks will remember is to use something called “Ping”. Ping is a basic network tool that checks if a computer or device is reachable over

Read More »
Find Articles by Tag
Wireshark (118)Cisco (82)IOS (76)IPv6 (62)Training (53)Wi-Fi (52)WLAN (43)Security (36)MS Windows (35)Linux (31)IPv4 (29)Ethernet (27)Cybersecurity (24)Troubleshooting (21)MS Windows (21)Voice (20)CellStream (19)Networking (19)Wi-Fi 6 (19)Packet Capture (18)MPLS (15)Services (14)Tools (14)BGP (12)Router (12)TCP/IP (12)Travel (11)Cheat Sheet (11)Internet (11)ARP (11)Profile (11)Technicians (11)Network (11)TCP (10)OSPF (10)Configuration (10)VLAN (10)QoS (10)L3 (9)QUIC (9)101 (9)L2 (9)Routing (9)1-Day (9)STP (9)Consulting (8)Free (8)Ubuntu (8)tshark (8)MAC Address (7)SDN (7)Advanced (7)TT&S (7)AI (6)LLC (6)Learning (6)DNS (6)Course (6)Hands On (6)Tunnel (6)Top 10 (6)Networking 101 (6)Monitor Mode (5)Service Provider (5)RFMON (5)Bandwidth (5)Command Line (5)POTS to Pipes (5)Scanning (5)Innovative Systems (5)Speed Test (5)Skills (5)Firewall (5)Traceroute (5)Display Filter (5)Switches (5)Overview (5)Decryption (4)Certification (4)Subnetting (4)Monitoring (4)Telecom 101 (4)Wireless (4)Telephone (4)Policy (4)Artificial Intelligence (4)EIGRP (4)Testing (4)Virtualization (4)Kids (4)Teaching (4)VPN (4)CBRS (4)Fiber (4)ACL (4)VM (4)ICMP (4)Ping (4)POTS (4)LAN (4)GNS3 (4)MAC (4)Netstat (3)RIP (3)FCC (3)Microsoft (3)NIST (3)Home (3)Online School (3)netsh (3)Data Center (3)Design (3)nslookup (3)nmap (3)Wi-Fi 7 (3)Toolkit (3)NVMe (3)iSCSI (3)Speed (3)MacOS (3)L2VPN (3)pcap-ng (3)Remote Desktop (3)Telecom (3)Maintenance (3)Logging (3)Server (3)Map (3)NAT (3)Ultimate (3)Reload (3)Privacy (3)Command (3)Analysis (3)Broadband (3)Online Course (3)Password (3)Service (3)Cisco IOS (3)SSH (2)Repairing (2)Books (2)Customer (2)Macros (2)htop (2)Bypass (2)Bits (2)NPAT (2)Math (2)VirtualBox (2)WinFi (2)Backup (2)UDP (2)Questions (2)ipconfig (2)Wi-Fi Scanner (2)iptables (2)History (2)DHCP (2)MacOS (2)btop (2)Order (2)Name Resolution (2)Fundamentals (2)Interfaces (2)Security Techniques (2)Routers (2)FAQ (2)Switch (2)Data (2)Traditional (2)HTTP (2)TLS (2)Capture (2)Briefing (2)Resume (2)ROMMON (2)RTP (2)Technology (2)Automation (2)Employees (2)whois (2)tracert (2)Google (2)Adoption Levels (2)Operations (2)Andrew Walding (2)Net Neutrality (2)RDP (2)Benchmark (2)VoIP (2)RFC's (2)Development (2)Computer (2)Outage (2)IP Address (2)Review (2)CPI (2)GitHub (2)Facebook (2)pcap (2)Addressing (2)Presentation (2)Blog (2)Terminal (2)Tool (2)VPWS (2)Cloud (2)Ansible (2)VXLAN (2)RDMA (2)Etherchannel (2)SAN (2)Upgrade (2)Email (2)Utilities (2)Zero-to-Hero (2)HTTPS (2)Requirements (1)Product (1)IPTV (1)Architecture (1)RFP (1)Block (1)Airlines (1)Brainstorming (1)Billing (1)Content (1)3-Day (1)L3VPN (1)Multicast (1)OOO (1)5-day (1)Submarine (1)Powerpoint (1)ASCII (1)China (1)Earth Status (1)6to4 (1)Data Networking (1)Vision (1)Technician (1)Cutting Cable (1)OTT (1)Roku (1)Online (1)Netflix (1)Youtube (1)SWOT (1)Cable (1)Virus (1)Social Responsibility (1)Flying (1)Macro (1)Code of Ethics (1)SS7 (1)Vudu (1)Story (1)Observations (1)5 Monkey (1)Capture Filter (1)tcpdump (1)Port Mirror (1)AS # (1)ASN (1)M-BGP (1)Repository (1)Automatically Switch (1)Extension Headers (1)SNR (1)Signal to Noise (1)VI/VIM (1)useradd (1)carving (1)parsing (1)AutoQoS (1)Value (1)Retransmissions (1)netcat (1)Documentation (1)White Paper (1)TCP CUBIC (1)TCP New Reno (1)Compound TCP (1)Equation (1)Quotes (1)Passwords (1)Switching (1)Rule (1)Taxonomy (1)Life (1)Art (1)Graphics (1)Bloom (1)Animation (1)Adult Learning (1)2-day (1)Traffic Engineering (1)Lab (1)Courses (1)TE (1)Reading (1)Galaxy (1)Lessons (1)Milky Way (1)About (1)Flight Tracker (1)Telephony (1)Business Case (1)Business Plan (1)Winston (1)IPsec (1)Fonts (1)L2 VPN (1)Packet Crafting (1)SYN Flood (1)Wi-Fi 5 (1)SIP (1)SDP (1)Fragmentation (1)Web Based (1)RTCP (1)Zoom (1)Hackathon (1)MyRoom (1)Fiber Channel (1)PMTU (1)Packet Analysis (1)Alternatives To (1)pktmon (1)Anonymize (1)Supply Chain (1)Tracewrangler (1)NIST SP 800-161 (1)SCRM (1)NIST SP 800-171 (1)CUI (1)CSR (1)Webex (1)ISO (1)SYSCTL (1)Web-based (1)Netmask (1)SCSI (1)NVME-oF (1)Ring Buffer (1)Packet Voice (1)mergecap (1)dumpcap (1)Spanning Tree (1)Discovery (1)Links List (1)Teredo (1)Root Cause (1)CERNET2 (1)Parrot (1)Cost (1)ECMP (1)Disable (1)News (1)ND Table (1)ND (1)ISATAP (1)Temporary Addresses (1)Text Strings (1)Tri-band (1)ISO/IEC (1)NIST SP 800-183 (1)April Fools (1)Bibliography (1)ARP Probe (1)ARP Announcement (1)Gratuitous ARP (1)RARP (1)Bio (1)Quiz (1)Process Explorer (1)Reverse ARP (1)ATM (1)Humor (1)MPLS L3VPN (1)CrowdStrike (1)Zoomit (1)CPU (1)MPLS-TE (1)ufw (1)Airplane (1)Physical Layer (1)Air Quality (1)hping3 (1)L3 VPN (1)Frame Relay (1)ISO/IEC 27008 (1)gQUIC (1)SD-WAN (1)Network of Things (1)iPerf (1)NoT (1)Archive (1)Wayback Machine (1)Research (1)Packet Diagram (1)Assessment (1)Packet Comment (1)Switch Port (1)FBI (1)Spoofing (1)Redaction (1)Reconnaissance (1)L4 (1)L1 (1)Wi-Fi Analyzer (1)Trace files (1)Network Monitoring (1)Net Admin (1)Hack (1)Sys Admin (1)Next Hop Self (1)DISM (1)tilix (1)Our Go Bag (1)SNAT (1)VRRP (1)Management (1)Username (1)Warm Upgrade (1)Coloring Rules (1)Report (1)connections (1)area (1)Stateful NAT (1)local (1)Registration (1)BBS (1)Bulletin Board (1)Addresses (1)2^128 (1)Instructional (1)Filtered (1)Search (1)ip command (1)Sharepoint (1)iACL (1)Infrastructure (1)Explained (1)Dependencies (1)High Tech (1)Sites (1)Blocking (1)Lesser Known (1)Murphy's Law (1)Windows (1)tACL (1)Desktop (1)Hire (1)Instructors (1)Technical (1)802.11ad (1)802.11ac (1)802.11n (1)Speeds (1)Transit (1)Sales (1)DHCPv6 (1)Mitigation (1)Overflow (1)Back up (1)Web Server (1)Real Time (1)dd-wrt (1)Gateway (1)House of Representatives (1)Why use us? (1)Remote (1)Rollback (1)Limit (1)Procedure (1)Client (1)Route Selection (1)Load Balancing (1)Path Selection (1)show version (1)show ver (1)Copying (1)C15 (1)System (1)Attack (1)Update (1)NBAR (1)CAM Table (1)Rates (1)Mileage (1)Phone Book (1)Company (1)Gardar (1)Edinburg (1)Slow Death (1)Software (1)Upgrade IOS (1)Instructor (1)Parenting (1)Universe (1)3D (1)Harvard (1)AAA (1)Hotel Glasses (1)Don't Drink (1)Better (1)MGCP (1)Filter (1)Life Lessons (1)Manager (1)Personnel (1)Resilient (1)Disaster (1)Signs (1)Internet Era (1)Politicians (1)Impact (1)Save Space (1)Supervisor (1)Disk Space (1)Dynamic DNS (1)Remote Control (1)Support (1)Desktop Sharing (1)Clean (1)Autorun (1)Speaking (1)Wisconsin (1)Public IP (1)WSTA (1)Employee (1)Removing (1)chkdsk (1)sfc (1)Starlink (1)Dual Stack (1)Translation (1)CGNAT (1)Moore (1)Moore's Law (1)Device Drivers (1)Topology (1)Web Site (1)Air Traffic (1)Traveler (1)Impolite (1)Food for Thought (1)Video (1)Cleanup (1)Pre-Fetch (1)ShowNet (1)Censored (1)Computers (1)How To's (1)ESX (1)Geolocation (1)Competition (1)Car Rental (1)Rental Cars (1)Save Money (1)Network Sciences (1)List (1)VM Server (1)Complete (1)Legal (1)Illegal (1)Unsecured (1)Law (1)Install (1)User Interface (1)Tech News (1)Travel Light (1)Emoticon (1)Subscribers (1)Static IP (1)Central Office (1)Tech Tips (1)Customer Unhappy (1)Failure to deliver (1)Overcommitment (1)Rejection (1)Ancient (1)Tech Support (1)Keep Trying (1)VMware (1)Failures (1)Letter (1)Complaint (1)Social Media (1)ROI (1)Task Management (1)Deep Dive (1)Unresponsive (1)Transformation (1)Edison (1)Colasoft (1)Settings (1)Airline (1)Web Sites (1)Links (1)Delay (1)Setting (1)Clock (1)Lock (1)Alias (1)Cabling (1)Admin (1)Secure Code (1)Fix (1)Default (1)AToM (1)Performance (1)Tech Tip (1)Docker (1)Netmiko (1)Git (1)Python (1)Error (1)TR-369 (1)PKI Server (1)Netflow (1)Protocol (1)LISP (1)re-use (1)Copmputers (1)Old (1)Funding (1)USF (1)Timelines (1)Lines (1)Worldwide (1)Administrative Distance (1)Admin Distance (1)IP ID (1)Front Office (1)Pipes (1)VRF Lite (1)Extended Traceroute (1)Extended Ping (1)Apple (1)Software Defined Networking (1)TR-069 (1)Device Driver (1)CCNP (1)ILT (1)neofetch (1)ncdu (1)hollywood (1)btop++ (1)Soldering (1)Servicing (1)dig (1)TikTok (1)CMD (1)Gift (1)Tech (1)Conference (1)Field Technicians (1)ifconfig (1)Win-Fi (1)What we use (1)Products (1)Ideas (1)Wi-Fi 6E (1)Traffic Volume (1)Free Training (1)PC (1)Basic (1)Interview (1)TDM to IP (1)Broken Phone (1)Great Story (1)Field Service (1)Know-it-All (1)Analytics (1)Avian Carriers (1)Bytes (1)Nibbles (1)Binary (1)Hexadecimal (1)Cans and String (1)Squishy Circuits (1)Electricity (1)Coding (1)ADSL (1)Computing (1)Newbie (1)Quality (1)HD Movie (1)HD (1)Streamline (1)cRTP (1)OnePK (1)ONE (1)Traffic (1)GodMode (1)GRE (1)Download Speed (1)Shortcuts (1)Smartports (1)Config Register (1)Null Interface (1)Black Hole (1)CAR (1)Supernetting (1)Protected Ports (1)OpenFlow (1)Keyboard (1)Timeline (1)PBR (1)Partition (1)Best (1)TELNET (1)Activities (1)Restore (1)Conversations (1)Temporary (1)Colors (1)HSRP (1)Policy Based (1)Details (1)IP Mobility (1)modify (1)interrupt (1)console (1)more (1)show diag (1)Timestamps (1)FLASH (1)Find (1)Datacom (1)IoT (1)APIC (1)Mini Course (1)Rural (1)TRANSUM (1)SSL (1)Hiring (1)Permission (1)Usage (1)ICMPv6 (1)Early Adopter (1)Quick Start (1)GLBP (1)Checksum (1)Core Dump (1)Stop (1)Internet Exchange (1)India (1)PPP (1)Queuing (1)Applications (1)ACI (1)PDF (1)Membership (1)Network Science (1)Center (1)LDP (1)Associations (1)route (1)Packets (1)Environment (1)Utilization (1)Preview (1)Basics (1)WCCP (1)Learn (1)Flipping the Model (1)IP (1)Virtual Machine (1)Depletion (1)Address (1)ARIN (1)Access Control (1)Twitter (1)
Show More Show Less

Upcoming Events and Classes 

To see the full calendar click on View Calendar below.  WBD = Web Based Delivery

Contact Us Here


Please verify.
Validation complete :)
Validation failed :(
 
Your contact request has been received. We usually respond within an hour, but please be patient. We will get back to you very soon.
Scroll to Top