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Static NAT Configuration - NAT and PAT | Network Design | Repovive

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Network Design26 sections · 911 units44h total

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Static NAT Configuration

One-to-one mapping setup

Static NAT creates permanent mappings for servers needing consistent addresses.

Basic static NAT:

ip nat inside source static 192.168.1.50 203.0.113.50

This maps internal 192.168.1.50 to public 203.0.113.50 for all ports.

Static NAT with port translation:

ip nat inside source static tcp 192.168.1.50 80 203.0.113.5 8080

Maps internal port $80$ to external port $8080$ .

Multiple mappings:

ip nat inside source static tcp 192.168.1.50 80 203.0.113.5 80
ip nat inside source static tcp 192.168.1.51 22 203.0.113.5 22

Different services share the same public IP through different ports.