From the course: Cisco CCNA (200-301) Cert Prep: 1 Network Fundamentals and Access
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Private IPv4 addressing and NAT
From the course: Cisco CCNA (200-301) Cert Prep: 1 Network Fundamentals and Access
Private IPv4 addressing and NAT
- [Presenter] While IPV4 addressing is what currently connects most of networks and carries a large portion of the information across the internet, globally routable IPv4 address space has become scarce. We've already breached the exhaustion threshold and internet registries have run out of IPv4 addressing that can be allocated to various organizations. This isn't a new issue. In fact it was in the 1980's and early 90's that mitigations began being put into place. Two network level stop gaps were private addressing and network address translation. RFC1918 introduced three ranges of IP addressing considered to be private addressing. The concept of private means that these are not IP addresses that are reachable on the globally routed internet table. In fact, they are only reachable within a single organization. This means that now using private addressing networks of tens of hosts to thousands of hosts can now be addressed without exacerbating IPv4 exhaustion. Now that my…
Contents
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Network models3m 13s
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Network components4m 39s
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Network topology achitecture5m 40s
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Physical interface and cable types3m 38s
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Command-line interface5m 50s
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Remote access5m 27s
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Interface and cable issue troubleshooting4m 44s
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TCP and UDP2m 26s
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IPv4 addressing and subnetting9m 24s
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Configuring IPv4 addressing4m 54s
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Private IPv4 addressing and NAT3m 31s
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Configure and verify IPv6 addressing and prefix4m 4s
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IPv6 address types6m 45s
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Verify IP parameters on client devices4m 10s
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Virtualization fundamentals2m 2s
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