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How to convert a private address to a public address to access the outside?

2025-03-01 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >

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Operation steps and ideas:

one。 Assign pc1,pc2 with ip address, subnet mask and gateway, respectively

# pc1

Ip:192.168.1.1

Subnet mask: 255.255.255.0

Gateway: 192.168.1.254

Pc2

Ip:192.168.1.2

Subnet mask: 255.255.255.0

Gateway: 192.168.1.254

two。 Configure a gateway on Route 1

Interface g0/0

No shutdown / / activate the port

Ip address 192.168.1.254 255.255.255.0

Interface g0/1

Ip address 10.1.1.1 255.255.255.0

three。 Configure ip on Route 2

Interface g0/0

No shutdown / / activate the port

Ip address 10.1.1.2 255.255.255.0

Interface g0/1

No shutdown / / activate the port

Ip address 192.168.20.1.1.1

four。 Configure ip on Route 3

Interface g0/0

No shutdown / / activate the port

Ip address 20.1.1.2 255.255.255.0

five。 Set the default route in Route 1 so that it can send packets.

Ip routing / / enable routing function

Ip route 0.0.0.0 0.0.0.0 10.1.1.2

six。 Let the other two routers learn on their own

Route 2:

Route rip / / enable rip routing protocol

Version 2 / / use the rip2 version

No auto-summary / / turn off dynamic summarization of rip protocol

Network 10.1.1.0

Network 20.1.1.0 enters rip protocol

Route 3:

Route rip / / enable rip routing protocol

Version 2 / / use the rip2 version

No auto-summary / / turn off dynamic summarization of rip protocol

Network 20.1.1.0 enters rip protocol

seven。 Convert a private address to a public address on route 1

Interface g0/0

Ip nat inside / / private network boundary

Interface g0/1

Ip nat outside / / external network boundary

Access-list 1 permit 192.168.1.0 0.0.0.255

Determine the private address space to be translated by nat

Ip nat inside source list 1 interface g0/1

Configure corresponding mat translation entries for private addresses

eight。 Verify on PC

Ping 20.1.1.2 spell the external network to see if it can be successful.

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