Dynamic PAT - Network Address Translation
Practical Networking
@practicalnetworkingAbout
If you’ve been in the Network Engineering career field for any small amount of time, then you’ve probably been frustrated at how difficult it was to find articles and videos that were reliable, thorough, and understandable. You found articles that were very entry level, that perhaps gave simple definitions but did not communicate enough to explain how technologies actually worked. You found articles that were overly detailed, that went into so much minutia that the original point would be lost. The intent of the blog and video channel is to bridge that gap — providing the happy, practical medium between overly simplistic and overly detailed. PracNet teaches in a manner that is accessible, easy to learn, and easy to pass on. By presenting complex technology simply, PracNet provides practical, immediately applicable, knowledge of the Network Engineering industry.
Latest Posts
Video Description
Dynamic PAT allows many internal hosts to share one (or more) external IP address. It does this by assigning unique source ports to each outbound connection such that the response traffic can be untranslated successfully to the initiating host. Dynamic PAT is the type of address translation which allows for the maximum conservation of IP Addresses. Dynamic PAT is often confused with Dynamic NAT. In this video we show you the packet flow through a Dynamic PAT, showing you the packet before and after translation -- in BOTH directions (inbound and outbound). This is a look at Dynamic PAT from a Vendor Neutral perspective. The concepts in this video will apply to any Static NAT translation, on any platform, from any vendor. 00:00 - Dynamic PAT definition 00:47 - Dynamic PAT Illustration & Configuration 01:50 - Dynamic PAT Packet Flow - Initial Traffic Outbound 03:09 - Source Port number in packets 04:56 - Dynamic PAT Packet Flow - Response Traffic Inbound 05:59 - Why is the Source Port randomized? 08:31 - Dynamic PAT is Unidirectional 10:41 - Dynamic PAT can be combined with Static PAT 11:46 - Many to One translation 12:35 - Every IP in allows for 65k~ concurrent connections 13:37 - Dynamic PAT is Unidirectional 14:06 - Summary (lol, did you catch my typo? Firewpower ... ) 📌 Full NAT Playlist: https://www.youtube.com/playlist?list=PLIFyRwBY_4bQ7tJvbLA9A0v8Fq9l-H923 📌 Learn to configure / verify / troubleshoot NAT on Cisco Routers: https://classes.pracnet.net/courses/nat-on-a-cisco-ios-router 📌 Learn to configure / verify / troubleshoot NAT on Cisco ASA, ASAx, and Firepower Firewalls: https://classes.pracnet.net/courses/nat-on-a-cisco-asa-firewall 📌 Want to learn Networking? https://www.youtube.com/playlist?list=PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi 📌 Want to learn Subnetting? https://www.youtube.com/playlist?list=PLIFyRwBY_4bQUE4IB5c4VPRyDoLgOdExE 📌 Studying for the CCNA? https://www.practicalnetworking.net/index/ccna/ #dynamicpat #pat #nat #rfc1918 #ip-address #cisco #juniper #ccna #net+ #dynamicnat
Upgrade Your Everyday
AI-recommended products based on this video
Kasa Smart Outdoor Smart Plug by TP-Link (KP400) - Smart WiFi Outlet with 2 Sockets, IP64 Waterproof, Works with Alexa and Google Home, 2.4GHz WiFi Required, No Hub Required, Sunset & Sunrise Offset
Oraolo Open Ear Headphones, Bluetooth 5.4 Wireless Earbuds with Stereo Sound, ENC Clear Call, 21H Playtime, Type-C Charging, Touch Control, IPX6 Waterproof Open Ear Clip-On Earbuds for outdoor workout
Open Ear Wireless Earbuds, Sports Bluetooth Headphones with Real Time Translation, 80Hrs Playtime with LED Power Display, Noise Canceling Headset, IP55 Waterproof Earphones for Workout/Running (Black)
Wireless Earbuds, Sports Bluetooth Headphones, 80Hrs Playtime Ear Buds with LED Power Display, Noise Canceling Headset, IPX7 Waterproof Earphones for Workout/Running Z(Black)
Monster Wireless Earbuds Open Ear AC311, Bluetooth 5.4 Open Ear Headphones, Up to 30 Hours Playtimes Bluetooth Ear Earphones with Stereo Sound, Touch Control and IPX5 Waterproof Open Ear Buds
Brita Stainless Steel Premium Filtering Water Bottle, BPA-Free, Reusable, Insulated, Replaces 300 Plastic Water Bottles, Filter Lasts 2 Months or 40 Gallons, Includes 1 Filter, Carbon - 20 oz.
Simple Modern Filtered Water Bottle | Insulated Stainless-Steel Carbon Filter Travel Water Bottles | Reusable for Clean Drinking Water On The Go | 24oz, Sea Glass Sage
FITVII Health & Fitness Tracker (Answer/Make Calls), Smart Watch with 24/7 Heart Rate and Blood Pressure, Sleep Tracking Monitor, 120+ Sport Mode Activity Tracker
AYATAHA AYATAHA Smart Watch for Kids, Smartwatch Fitness Tracker for Boys Girls, Children's Activity Watch 37 Sports Modes SMS Notification, HD Full Touchscreen IP67 Waterproof, Blue
Iaret Iaret Smart Watch for Women, 1.83" HD Fitness Tracker with 4 Bands, Answer/Make Calls, Heart Rate/Sleep/SpO2/Step Tracking, 100+ Sport Modes, Android/iPhone Compatible Gift (Rose Gold)
Smart Watch for Men Women 1.8" Fitness Tracker, Bluetooth Call, DIY Dial, Heart Rate Sleep Blood Oxygen Monitor, 100+ Sports Modes, IP68 Waterproof Smartwatch for Android iPhone, Alexa Built-in
Hand Warmers 2 Pack, 14000mAh Rechargeable Hand Warmers, Electric Hand Warmer Reusable, Portable Power Bank USB Hand Warmers 4 Levels 8 Heating, Gifts for Raynauds Ski Golf Camping
Hand Warmers Rechargeable, 10000mAh Electric Heated Gloves Power Bank Portable Graphene Handwarmers Pouch with 3 Levels & Double-Sided Heating for Hunting Camping Golf Xmas Gifts for Women Men Kids
2Pack Rechargeable Hand Warmer, 8000mAh Electric Hand Warmer Power Bank, Portable USB-C Hand Warmer for Pocket, Reusable Hand Warmer Up to 8 hrs Each, Warm Gift for Men Women, for Hunting, Camping
GTOCE Portable Charger,40000mAh Power Bank with 22.5W Fast Charging LED Digital Display Battery Pack with 6 Outputs 2 Inputs, Type C Powerbank Portable Charger for iPhone 16 pro Samsung AirPods,Black
Monster Sleep Ear200, Wireless in-Ear Headphones, Bluetooth 6.0 Sleep Headphones, with ANC Active Noise Cancellation Designed for Side Sleepers, 30 Hours of bass Stereo Sound.
Monster Sleep Ear100 Ear Buds, Sleep Earbuds with Stereo Sound, Design for Side Sleeper, 32H Playtime, Bluetooth 6.0, ENC Noise Cancelling, IPX6 Waterproof Mini Headphones, White
Monster Sleep Ear100 Ear Buds, Sleep Earbuds with Stereo Sound, Design for Side Sleeper, 32H Playtime, Bluetooth 6.0, ENC Noise Cancelling, IPX6 Waterproof Mini Headphones, Black
Monster Sleep Ear100 Ear Buds, Sleep Earbuds with Stereo Sound, Design for Side Sleeper, 32H Playtime, Bluetooth 6.0, ENC Noise Cancelling, IPX6 Waterproof Mini Headphones, Black
Hydroponics Growing System Indoor Garden - Herb Garden with Grow Light, 15 Pods Stainless Steel Indoor Garden Kit, Auto Timer, Gardening Gift for All Ages
Umbra Triflora Hanging Planter for Window, Indoor Herb Garden, Set of 5, White/Black
Large Hydroponics Growing System 14 Pods, Indoor Herb Garden with LED Grow Light, 5L Water Tank, Hydroponic Grow Kit with 3 Auto-Timers, Rotatable Light Panel and Child Lock for Home School Gardening
Hanging Planter Hanging Plant Holder, 6 Inch 4 Indoor Plant Pots, Wall/Window Plant Hanger Indoor Herb Garden
slopehill Multi Hair Stylers & Hair Straightener - 2 in 1 Wet to Dry Air Straightener and Hair Dryer Combo with High Speed Air + Rapid Heat-Up + Customizable Temperature(Pink)
Hi.FANCY Portable Laptop Stand with Dual Cooling Fans for 14-17inch Laptops, Grey, 23.5 x 25.9 x 0.95cm
Laptop Stand for Desk, Adjustable Laptop Riser ABS+Silicone Foldable Portable Laptop Holder, Ventilated Cooling Notebook Stand for 10-15.6” Laptops,Tablet-Black
JETech 5 in 1 Case for Samsung Galaxy S25 Ultra 5G with 2-Pack Each Tempered Glass Screen Protector and Camera Lens Protector, Non-Yellowing Shockproof Bumper Phone Cover (Clear)
TAURI for iPhone 17 Pro Max Case 6.9" with 1-Pack Screen Protector, Camera Lens Full Protection, Military-Grade Protection, Shockproof Transparent Back Bumper Phone Cover - Clear Global Recycled Standard
TAURI for iPhone 17 Pro Case 6.3" with 1-Pack Screen Protector, Camera Lens Full Protection, Military-Grade Protection, Shockproof Transparent Back Bumper Phone Cover - Clear Global Recycled Standard
JOINPAYA 1Set Rechargeable Hand Warmer Hand Heater for Winter Heating Levels Compact
Shakven Rechargeable Hand Warmer | Cute Comfortable Portable Hand Warmers,Ergonomic Adjustable Energy-Efficient Small Heater for Travel, Outdoor, Winter
OCOOPA IP45 Waterproof Hand Warmer Rechargeable, Up to 15hrs Heat,10000mAh Durable Quick Charge Electric Hand Heater, PD Compatible, 3 Levels for Outdoors, Heavy Duty, H01-PD PRO
