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How to send a packet across NAT to local machine
How does NAT share one public IPv4 address across multiple private IPv4 addressesHow NAT / PortForwarding / TCP/IP works?ASA 5525-X PAT only for one IP subnetVery simple NAT question. How does a packet get back out?NAT - inside global addressFor how much period does the NAT table entry stays there even after connection is closed?NAT Translation IP usageHow does Network Address Translation work on my router?How does a router a layer 3 device translate port address in PAT, as it is a layer 3 device?How does packet traversal works over a public network with NAT overloading
I recently read about network address port translation and I have a doubt.
Lets say I have a PC(PC1) at 192.168.1.2 under a router with public address 10.74.65.11 . I have another PC(PC2) at 192.168.1.2 under a router with public address 103.14.51.21.
How do I ping PC1 from PC2?
ping 10.74.65.11 would just ping the router, no?
Further if PC1 has a netcat listener on port 5555 then how can PC2 connect to it?
nat
asked May 11 at 14:19
user50123user50123
162
add a comment |
I recently read about network address port translation and I have a doubt.
Lets say I have a PC(PC1) at 192.168.1.2 under a router with public address 10.74.65.11 . I have another PC(PC2) at 192.168.1.2 under a router with public address 103.14.51.21.
How do I ping PC1 from PC2?
ping 10.74.65.11 would just ping the router, no?
Further if PC1 has a netcat listener on port 5555 then how can PC2 connect to it?
nat
asked May 11 at 14:19
user50123user50123
162
add a comment |
I recently read about network address port translation and I have a doubt.
Lets say I have a PC(PC1) at 192.168.1.2 under a router with public address 10.74.65.11 . I have another PC(PC2) at 192.168.1.2 under a router with public address 103.14.51.21.
How do I ping PC1 from PC2?
ping 10.74.65.11 would just ping the router, no?
Further if PC1 has a netcat listener on port 5555 then how can PC2 connect to it?
nat
asked May 11 at 14:19
user50123user50123
162
I recently read about network address port translation and I have a doubt.
Lets say I have a PC(PC1) at 192.168.1.2 under a router with public address 10.74.65.11 . I have another PC(PC2) at 192.168.1.2 under a router with public address 103.14.51.21.
How do I ping PC1 from PC2?
ping 10.74.65.11 would just ping the router, no?
Further if PC1 has a netcat listener on port 5555 then how can PC2 connect to it?
nat
nat
asked May 11 at 14:19
user50123user50123
162
asked May 11 at 14:19
user50123user50123
162
asked May 11 at 14:19
user50123user50123
162
asked May 11 at 14:19
user50123user50123
162
asked May 11 at 14:19
user50123user50123
162
162
add a comment |
add a comment |
1 Answer
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For ping (ICMP echo request) to work across NAT, you'd have to forward ICMP (echo requests) from the public IP router to the private IP host (aka destination NAT or reverse NAT). For a normal TCP service you'd just use port forwarding (also DNAT or reverse NAT).
answered May 11 at 16:09
Zac67Zac67
35.3k22572
add a comment |
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1 Answer
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1 Answer
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For ping (ICMP echo request) to work across NAT, you'd have to forward ICMP (echo requests) from the public IP router to the private IP host (aka destination NAT or reverse NAT). For a normal TCP service you'd just use port forwarding (also DNAT or reverse NAT).
answered May 11 at 16:09
Zac67Zac67
35.3k22572
add a comment |
For ping (ICMP echo request) to work across NAT, you'd have to forward ICMP (echo requests) from the public IP router to the private IP host (aka destination NAT or reverse NAT). For a normal TCP service you'd just use port forwarding (also DNAT or reverse NAT).
answered May 11 at 16:09
Zac67Zac67
35.3k22572
add a comment |
For ping (ICMP echo request) to work across NAT, you'd have to forward ICMP (echo requests) from the public IP router to the private IP host (aka destination NAT or reverse NAT). For a normal TCP service you'd just use port forwarding (also DNAT or reverse NAT).
answered May 11 at 16:09
Zac67Zac67
35.3k22572
For ping (ICMP echo request) to work across NAT, you'd have to forward ICMP (echo requests) from the public IP router to the private IP host (aka destination NAT or reverse NAT). For a normal TCP service you'd just use port forwarding (also DNAT or reverse NAT).
answered May 11 at 16:09
Zac67Zac67
35.3k22572
answered May 11 at 16:09
Zac67Zac67
35.3k22572
answered May 11 at 16:09
Zac67Zac67
35.3k22572
answered May 11 at 16:09
Zac67Zac67
35.3k22572
35.3k22572
add a comment |
add a comment |
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