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Description
Cisco Business 250 Series CBS250-48P-4G - Switch - L3 - Smart - 48 x 10/100/1000 (PoE+)Produktbeschreibung : Cisco Business 250 Series CBS250 48P 4G Switch 48 Anschlsse Smart an Rack montierbar Gertetyp : Switch 48 Anschlsse L3 Smart Gehusetyp : An Rack montierbar Untertyp : Gigabit Ethernet Ports : 48 x 10 100 1000 (PoE+) + 4 x Gigabit SFP Power Over Ethernet (PoE) : PoE+ PoE Budget : 370 W Leistung : Switching Kapazitt: 104 Gbps Weiterleitungsleistung (Paketgre 64 Byte): 77,38 Mpps Kapazitt : Link Aggregationsgruppen: 8 VLAN
Produktbeschreibung : Cisco Business 250 Series CBS250-48P-4G - Switch - 48 Anschlüsse - Smart - an Rack montierbarGerätetyp : Switch - 48 Anschlüsse - L3 - Smart
Gehäusetyp : An Rack montierbar
Untertyp : Gigabit Ethernet
Ports : 48 x 10/100/1000 (PoE+) + 4 x Gigabit SFP
Power Over Ethernet (PoE) : PoE+
PoE-Budget : 370 W
Leistung : Switching-Kapazität: 104 Gbps
Weiterleitungsleistung (Paketgröße 64 Byte): 77,38 Mpps
Kapazität : Link-Aggregationsgruppen: 8
VLAN-Unterstützung: 4094
Pufferkapazität (MB): 3
Größe der MAC-Adresstabelle : 8000 Einträge
Jumbo-Rahmenunterstützung : 2KB
Routing Protocol : IGMP, CIDR, Policy-Based Routing (PBR)
Remoteverwaltungsprotokoll : SSH, SSH-2, ICMP, SNMP 1, SNMP 2c, SNMP 3, RMON
Leistungsmerkmale : ARP-Unterstützung, Schutz vor DoS-Angriffen, DHCP Support, IP-Quellwächter, IPMB, SCT, LLDP-MED, VLAN-Unterstützung, QoS, STP Support, MSTP Support, PVST+, Rapid PVST+, GVRP, RADIUS-Unterstützung, Voice VLAN, MVR, TPID, UDLD, ACL Support, DHCP-Server, BPDU, STP Loop-Schutz, STP Root Guard, DHCP-Snooping, DAI, Private VLAN, SSD, Storm Control, WRR, ToS, ISATAP Tunnel-Unterstützung
Produktzertifizierungen : IEEE 802.1x, IEEE 802.3az, IEEE 802.1D, IEEE 802.3ad (LACP), IEEE 802.1Q, IEEE 802.1p, IEEE 802.1ab (LLDP), IEEE 802.1s, IEEE 802.1w, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ae, IEEE 802.3an, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z, IEEE 802.3af, IEEE 802.3at
Stromversorgung : Wechselstrom 120/230 V (50/60 Hz)
Abmessungen (Breite x Tiefe x Höhe) : 44.5 cm x 35 cm x 4.4 cm
Gewicht : 5.43 kg
Lokalisierung : Russland, Ukraine, Israel, Ägypten, Indonesien, Korea, Philippinen, Südafrika, Thailand, Türkei, Vereinigte Arabische Emirate, Vietnam
Preistyp : Wiederaufbereitet
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4.8 ★★★★★
Based on 420 reviews
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Product Reviews
★★★★★ 5
A #MustRead for cybersecurity practitioners
Format: Kindle
Rick Howard's latest book is the ultimate reference for cybersecurity practitioners, making it an essential read for anyone in the field. With his straightforward and refreshingly irreverent writing style, coupled with his profound technical knowledge, Rick has created a narrative that is easy to understand and grasp. He delves into the foundational aspect of cybersecurity, which he refers to as the cybersecurity first principle, which he then it to specific high-impact strategies.
The book has eight well-written chapters providing a comprehensive overview of those strategies. Importantly, Rick then offers an up-to-date and thorough exploration of the complementary capabilities (tactical-level tools) that can be utilized to "reduce the probability of material impact due to a cyber event" - the cyber first principle.
In the concluding chapter, Rick succinctly summarizes his contribution to the field, stating, "And that's it. Those are all the tools you need to design, build, and enhance a cybersecurity program based on first principle thinking." This assertion highlights the value of his book as a practical guide for designing and improving cybersecurity programs with a focus on first principles.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2023
★★★★★ 5
Absolute must read if you oversee any portion of a cyber security program!
Format: Paperback
I loved this book. The concepts and ideas presented are a great wake up call for an industry that is so focused on blinking light hardware and the next big technological thing...this book challenges the paradigm that you need to strip your security culture down to some very core ideas...then build a solid security program around your security first principle(s). Without that core idea, you're just throwing away money on tools that may not actually be addressing your root needs.
Great read for anyone looking to rethink their security program, security culture, and security spend.
BRAVO!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2025
★★★★★ 5
Context, Strategies and Wisdom in a single package
Format: Kindle
This was my first book I have read by this particular author. I had spent some time looking for a comphrensive approach to Cyber Security and found many other texts to be lacking. Certain aspects are well documented, but no single source that brought it all together. This is exactly what First Principles brings to the table. As a practicioner that looks for better ways to formulate the objectives of SecOps Use Cases I have found the methods presented in this book to be immensely helpful. I have also given copies aways as a gifts to students who are just entering the field as this is by far the best intro to the long history of Cyber Security that combines the best direction for the future. The historical context that the author brings through first hand experience is beyond a treasure trove. It has been said many times in cheezy ads, but honestly, if you only read one book on Cyber Security make it this one.
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Reviewed in the United States on June 21, 2023
★★★★★ 5
My title review
Format: Paperback
Great book , up to date and very good reading
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Every cybersecurity professional should read this book, probably twice
Format: Audiobook
This is the Phoenix Project for cybersecurity professionals.
Every chapter of this book brought clarity and a new perspective from the way industry approaches aspects of cybersecurity. The book won’t be all things to everyone, nor is it perfect, but its the single most practical and effective approach to cybersecurity I’ve found. In a time where IT is excruciatingly complex and securing environments seems like an impossible task, this has been invaluable and has affected how I think about the future.
Im not associated with the author in any way. Im just in a leadership role facing these challenges every day and I think this book may some day become mandatory reading in the field.
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Reviewed in the United States on July 23, 2024
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