It is fairly common for organizations to want to subdivide their networks into smaller pieces for manageability purposes. Subnetting breaks a large network address space up into manageable pieces that administrators may assign to smaller subnetworks. In this video, learn how to subdivide large networks using IP subnetting.
- [Instructor] It's fairly common for organizations…to want to subdivide their networks into smaller pieces…for manageability purposes.…This is where IP subnetting can provide…an effective solution.…Subnetting breaks a large network address space up…into manageable pieces that administrators may assign…to smaller networks.…For example, assume that you're using…the 192.168 private address space on your network.…You might have a network that looks something like this…with different departments connected…to different geographic regions.…
Instead of haphazardly assigning addresses…throughout your network…you might decide that you want to use sub networks.…The 192.168 address space normally has the dividing line…between network and host addresses here…giving us a single network…with over 65,000 possible host addresses.…If we shift the dividing line to here…we now have 256 possible sub networks…with 254 possible hosts each.…
We go from one network with over 65,000 hosts…to 256 networks with 254 hosts each.…While they may not all fit on the screen,…
Author
Mike Chapple
Released
4/4/2018Note: This course is part of a series releasing throughout 2018. A completed learning path of the series will be available once all the courses are released.
- How IP addresses are assigned and managed
- Multilayer protocols
- VPNs and VPN concentrators
- Designing secure networks
- Firewall management techniques
- Maintaining network availability
- Software defined networking (SDN)
- Port isolation
- Network attacks
- How Wi-Fi networks function
- WPA, WPS, and propagation attacks
- Host-based network security control
Skill Level Advanced
Duration
Views
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Introduction
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Welcome2m 49s
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1. TCP/IP Networking
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Introducing TCP/IP6m 22s
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IP addressing3m 26s
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Domain Name System (DNS)4m 28s
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Network ports3m 41s
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ICMP5m 38s
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Multilayer protocols2m 38s
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2. Network Security Devices
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Switches and routers2m 31s
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Firewalls4m 20s
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VPNs and VPN concentrators2m 55s
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Protocol analyzers6m 39s
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Unified threat management1m 54s
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Modems2m 24s
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3. Designing Secure Networks
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Subnetting3m 46s
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Network access control4m 21s
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Remote network access5m 18s
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Defense in depth3m 26s
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4. Specialized Networking
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Telephony2m 24s
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Multimedia collaboration5m 5s
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Storage networks3m 24s
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MPLS3m 50s
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5. Secure Network Management
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Firewall rule management4m 41s
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Network monitoring4m 19s
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SNMP3m 18s
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6. Virtualized Networks
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Port isolation1m 47s
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7. Network Attacks
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Denial-of-service attacks4m 25s
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Eavesdropping attacks3m 51s
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Other network attacks5m 56s
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8. Transport Encryption
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TLS and SSL4m 1s
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IPsec3m
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Securing common protocols6m 30s
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9. Wireless Networking
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Basic wireless security3m 53s
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WEP, WPA, and WPA21m 44s
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Wireless authentication4m 58s
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Wireless signal propagation2m 47s
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WPA and WPS attacks3m 30s
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Propagation attacks3m 42s
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10. Host Security
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Malware prevention8m 54s
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Application management6m 49s
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Hardware security4m 13s
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Virtualization security5m 47s
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Conclusion
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Next steps44s
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Video: Subnetting