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    Best Seller
    Pre-Owned Cisco NIM-2MFT-T1/E1 2 Port Multi-flex Trunk Voice/Clear-channel T1/E1 Module (Good)

    Pre-Owned Cisco NIM-2MFT-T1/E1 2 Port Multi-flex Trunk Voice/Clear-channel T1/E1 Module (Good)

    Pulled from working environment. Ready for installation. The Cisco Fourth-Generation 1- 2- 4- and 8-Port T1/E1 Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) support data and voice applications on the Cisco 4000 Integrated Services... more

    $350.00 $99.99

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    Network Security Firewalls and VPNs 9780763791308 Used / Pre-owned

    Network Security Firewalls and VPNs 9780763791308 Used / Pre-owned

    PART OF THE NEW JONES & BARTLETT LEARNING INFORMATION SYSTEMS SECURITY & ASSURANCE SERIES!Network Security Firewalls and VPNs provides a unique in-depth look at the major business challenges and threats that are introduced when an organization s... more

    $6.24

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    Best Seller
    Pre-Owned Security Monitoring : Proven Methods for Incident Detection on Enterprise Networks 9780596518165 Used

    Pre-Owned Security Monitoring : Proven Methods for Incident Detection on Enterprise Networks 9780596518165 Used

    Showing users how to effectively deploy network security monitoring to defend a company against the most urgent threats this book guides readers on defining policies that specify what users can and can t do and communicating those policies to... more

    $10.29

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    Pre-Owned Hacking Exposed : Network Security Secrets and Solutions 9780072127485

    Pre-Owned Hacking Exposed : Network Security Secrets and Solutions 9780072127485

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $5.84 $4.50

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    Ubiquiti Networks UniFi Dream Machine Special Edition UDM-SE

    Ubiquiti Networks UniFi Dream Machine Special Edition UDM-SE

    *Save The Tax Instantly! Use B&H Payboo to get an instant rebate on the Tax amount.

    [Pre Order - allow extra time] Ubiquiti Networks UniFi Dream Machine Special Edition All-in-One Enterprise Network Appliance, Security Gateway, 8 x Gigabit PoE - 10G SFP+, 10G SFP+ LAN & WAN Ports, 2.5" / 3.5" HDD Bay, 1.7 GHz ARM Cortex-A57 Quad-Core,... more

    $494.99

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    Ubiquiti Networks UniFi Dream Machine Pro UDM-PRO

    Ubiquiti Networks UniFi Dream Machine Pro UDM-PRO

    *Save The Tax Instantly! Use B&H Payboo to get an instant rebate on the Tax amount.

    [Pre Order - allow extra time] Ubiquiti Networks UniFi Dream Machine Pro All-in-One Enterprise Network Appliance, Security Gateway, 8-Port Gigabit Switch, 10G SFP+ Ports, 2.5" / 3.5" HDD Bay, 1.7 GHz ARM Cortex-A57 Quad-Core, 4GB DDR4 RAM - 16GB eMMC,... more

    $374.00

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    Inside Network Perimeter Security 9780672327377 Used / Pre-owned

    Inside Network Perimeter Security 9780672327377 Used / Pre-owned

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $7.68 $6.95

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    Cisco IOS Access Lists : Help for Network Administrators 9781565923850 Used / Pre-owned

    Cisco IOS Access Lists : Help for Network Administrators 9781565923850 Used / Pre-owned

    This guide focuses on access lists that are critical to network and Internet security. Access lists are a main part of the Cisco IOS that are used to control access route traffic and specify packet filtering for firewalls. CONDITION – USED: Books... more

    $8.00 $6.57

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    Telecommunications Network Management : Technologies and Implementations 9780780334540 Used / Pre-owned

    Telecommunications Network Management : Technologies and Implementations 9780780334540 Used / Pre-owned

    This volume brings together the full range of topics in telecommunications network management including the evolution of management techniques and first-hand accounts of management experiences in new technologies and services. CONDITION – USED: Books... more

    $18.47

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    Pre-Owned Introduction to Networks: Companion Guide Cisco Networking Academy Hardcover Press

    Pre-Owned Introduction to Networks: Companion Guide Cisco Networking Academy Hardcover Press

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $6.35

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    Pre-Owned 2D Object Detection and Recognition : Models Algorithms and Networks 9780262011945 Used

    Pre-Owned 2D Object Detection and Recognition : Models Algorithms and Networks 9780262011945 Used

    A guide to the computer detection and recognition of 2D objects in gray-level images. CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding... more

    $7.38

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    Pre-Owned Foundation for Broadband Networks 9780130832184 Used

    Pre-Owned Foundation for Broadband Networks 9780130832184 Used

    BASIC APPROACH PLEASE PROVIDE COURSE INFORMATION CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g.... more

    $10.58

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    Pre-Owned Linksys Velop Home Mesh WiFi System AC1300 รขโ‚ฌโ€œ Mesh WiFi Router Mesh Router for Whole-Home Mesh Network (Like New)

    Pre-Owned Linksys Velop Home Mesh WiFi System AC1300 รขโ‚ฌโ€œ Mesh WiFi Router Mesh Router for Whole-Home Mesh Network (Like New)

    Easy to set up and designed to fit anywhere Velop brings ultra-fast full-strength mesh WiFi to your home in minutes. Featuring Intelligent Mesh technology and a sleek modular design the Velop mesh WiFi system spreads strong WiFi through any kind of home. more

    $19.99

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    Pre-Owned Recent Advances in Modeling and Simulation Tools for Communication Networks Services 9780387739076

    Pre-Owned Recent Advances in Modeling and Simulation Tools for Communication Networks Services 9780387739076

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $98.43

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    Pre-Owned Reliability of Transport Networks 9780863802607 /

    Pre-Owned Reliability of Transport Networks 9780863802607 /

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $10.41

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    Pre-Owned CCNA : Cisco Certified Network Associate - Fast Pass 9780470185711

    Pre-Owned CCNA : Cisco Certified Network Associate - Fast Pass 9780470185711

    Organized by exam objectives this is a focused concise review guide that works hand-in-hand with any learning tool including the Sybex CCNA: Cisco Certified Network Associate Study Guide 6th and Deluxe editions. The book will consist of four high-level... more

    $6.89

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    Pre-Owned Protocols and Architectures for Wireless Sensor Networks 9780470095102

    Pre-Owned Protocols and Architectures for Wireless Sensor Networks 9780470095102

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $17.09 $10.60

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    Pre-Owned WiMAX Technology and Network Evolution 9780470343876 /

    Pre-Owned WiMAX Technology and Network Evolution 9780470343876 /

    Written and edited by experts who have developed WiMAX technology and standards WiMAX the Worldwide Interoperability for Microwave Access represents a paradigm shift in telecommunications technology. CONDITION – USED: Books sold are in GOOD or better... more

    $11.13 $4.50

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    Virtual Private Networks : Technologies and Solutions 9780201702095 Used / Pre-owned

    Virtual Private Networks : Technologies and Solutions 9780201702095 Used / Pre-owned

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $6.61 $6.30

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    Pre-Owned Netgear Nighthawk CAX80 Wi-Fi 6 IEEE 802.11ax Ethernet Cable Wireless Router - Dual Band - 2.40 GHz ISM Band - 5 GHz UNII Band - 750 MB/s Wireless Speed - 4 x Network Port - 1 x Like New

    Pre-Owned Netgear Nighthawk CAX80 Wi-Fi 6 IEEE 802.11ax Ethernet Cable Wireless Router - Dual Band - 2.40 GHz ISM Band - 5 GHz UNII Band - 750 MB/s Wireless Speed - 4 x Network Port - 1 x Like New

    LEADING THE NEW ERA OF WIFI Experience the future of WiFi with the latest blazing fast WiFi 6 technology. Enjoy 4 times the capacity improved performance and up to 10X faster download speeds with the DOCSIS 3.1 Cable Modem and a future-proof router... more

    $395.50 $289.00

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    Pre-Owned Linksys Hydra Pro 6E Wi-Fi 6 IEEE 802.11ax Ethernet Wireless Router - 2.40 GHz ISM Band - 5 GHz UNII Band - 4 x Antenna(4 x External) - 844.80 MB/s Wireless Speed - 4 x Network Port - 1

    Pre-Owned Linksys Hydra Pro 6E Wi-Fi 6 IEEE 802.11ax Ethernet Wireless Router - 2.40 GHz ISM Band - 5 GHz UNII Band - 4 x Antenna(4 x External) - 844.80 MB/s Wireless Speed - 4 x Network Port - 1

    Linksys Hydra Pro 6E MR7500 Wireless Router more

    $290.41 $109.99

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    Convergence Technologies for 3G Networks : IP UMTS EGPRS and ATM 9780470860915 Used / Pre-owned

    Convergence Technologies for 3G Networks : IP UMTS EGPRS and ATM 9780470860915 Used / Pre-owned

    The merging of voice and data on a single network opens powerful new possibilities in communications. Only a fundamental understanding of both technologies will ensure you are equipped to maximise their full potential. CONDITION – USED: Books sold... more

    $10.70

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    Pre-Owned Cisco Self-Study : Building Metro Optical Networks (METRO) 9781587050701

    Pre-Owned Cisco Self-Study : Building Metro Optical Networks (METRO) 9781587050701

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $9.97 $4.50

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    Pre-Owned Theory of Nets : Flows in Networks 9780471851486 /

    Pre-Owned Theory of Nets : Flows in Networks 9780471851486 /

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $20.69

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    Pre-Owned Local Network Technology (Tutorial) 9780818608254 Used

    Pre-Owned Local Network Technology (Tutorial) 9780818608254 Used

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $6.77

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    Pre-Owned Multicomputer Networks : Message-Based Parallel Processing 9780262181297 /

    Pre-Owned Multicomputer Networks : Message-Based Parallel Processing 9780262181297 /

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $5.00 $4.50

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    Sensor Network Protocols 9780849370366 Used / Pre-owned

    Sensor Network Protocols 9780849370366 Used / Pre-owned

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $10.52

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    Pre-Owned Mobile Wireless and Sensor Networks : Technology Applications and Future Directions 9780471718161

    Pre-Owned Mobile Wireless and Sensor Networks : Technology Applications and Future Directions 9780471718161

    This publication represents the best thinking and solutions to a myriad of contemporary issues in wireless networks. Coverage includes wireless LANs multihop wireless networks and sensor networks. Readers are provided with insightful guidance in... more

    $12.49 $9.79

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    Telecommunication Networks : Protocols Modeling and Analysis 9780201164237 Used / Pre-owned

    Telecommunication Networks : Protocols Modeling and Analysis 9780201164237 Used / Pre-owned

    Written by one of the most respected members in the telecommunications industry this book covers the field of telecommunications and the rapidly evolving network technologies of the future. Both packet switching and circuit switching are covered in... more

    $9.44 $6.22

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    Pre-Owned CCNA Cisco Certified Network Associate : Exam 640-802 9781118063460

    Pre-Owned CCNA Cisco Certified Network Associate : Exam 640-802 9781118063460

    The leading quick-review guide to the number-one IT certification The Cisco Certified Network Associate (CCNA) certification is the first step for network administrators seeking to advance their careers. CONDITION – USED: Books sold are in GOOD or... more

    $7.20

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    Pre-Owned Network Intrusion Detection : An Analyst s Handbook 9780735710085

    Pre-Owned Network Intrusion Detection : An Analyst s Handbook 9780735710085

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $6.39

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    Build Your Own Wi-Fi Network 9780072226249 Used / Pre-owned

    Build Your Own Wi-Fi Network 9780072226249 Used / Pre-owned

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $5.94 $4.50

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    Pre-Owned Real Digital Forensics : Computer Security and Incident Response 9780321240699

    Pre-Owned Real Digital Forensics : Computer Security and Incident Response 9780321240699

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $6.22

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    Principles and Practice of Information Security 9780131840270 Used / Pre-owned

    Principles and Practice of Information Security 9780131840270 Used / Pre-owned

    CONDITION – USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining... more

    $6.00

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    Pre-Owned - JUNIPER MS-MPC-128G JUNIPER MULTI SERVICE - MPC WITH 1X (Good)

    Pre-Owned - JUNIPER MS-MPC-128G JUNIPER MULTI SERVICE - MPC WITH 1X (Good)

    Used JUNIPER MS-MPC-128G JUNIPER MULTI SERVICE - MPC WITH 1X Items are refurbished by C4 s in house techs. more

    $1,895.00 $1,250.00

    FREE shipping

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    Pre-Owned - JUNIPER MX480 JUNIPER MX480 ETHERNET SERVICES RO- (Good)

    Pre-Owned - JUNIPER MX480 JUNIPER MX480 ETHERNET SERVICES RO- (Good)

    Used JUNIPER MX480 JUNIPER MX480 ETHERNET SERVICES RO- Items are refurbished by C4 s in house techs. more

    $3,495.00

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    Pre-Owned - JUNIPER MX-MPC2-3D MX-MPC2-3D-D - PORT CONCENTRATOR (Good)

    Pre-Owned - JUNIPER MX-MPC2-3D MX-MPC2-3D-D - PORT CONCENTRATOR (Good)

    Used JUNIPER MX-MPC2-3D MX-MPC2-3D-D - PORT CONCENTRATOR Items are refurbished by C4 s in house techs. more

    $99.95

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    Pre-Owned Networking Fundamentals : Wide Local and Personal Area Communications 9780470992906 Used

    Pre-Owned Networking Fundamentals : Wide Local and Personal Area Communications 9780470992906 Used

    Focusing on the physical layer Networking Fundamentals provides essential information on networking technologies that are used in both wired and wireless networks designed for local area networks (LANs) and wide-area networks (WANs). CONDITION –... more

    $15.40 $11.05

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    Pre-Owned AX1800S Wireless Router Black

    Pre-Owned AX1800S Wireless Router Black

    AX1800 Dual Band WiFi 6 (802.11ax) Router supporting MU-MIMO and OFDMA technology with AiProtection Classic network security powered by Trend Micro. Specifications Color: Black Broadband Transmission Technology: Ethernet Wireless LAN Standard: IEEE... more

    $44.99

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    Pre-Owned Cisco ISR4451-X/K9 ISR 4451 with 4 Onboard GE Integrated Services Router (Good)

    Pre-Owned Cisco ISR4451-X/K9 ISR 4451 with 4 Onboard GE Integrated Services Router (Good)

    Pulled from working environment. Ready for installation. The Cisco 4000 Family Integrated Services Router (ISR) revolutionizes WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence it... more

    $799.99

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    More information about Bridges & Routers

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