[NTLUG:Discuss] how is the packet been "seen" by servers?

[m m]

Hi All:

here is an assumption:

internet
  |
eth0 public ip 1.2.3.4
eth1 private ip 192.168.0.1
  |
  |- eth0 192.168.0.2
  |- eth0 192.168.0.3

have rules:
iptables -t nat -A PREROUTING -i eth0 -d 192.168.0.1 -dport 80 -j DNAT --to 
192.169.0.2
iptables -t nat -A PREROUTING -i eth0 -d 192.168.0.1 -dport 8800 -j DNAT 
--to 192.169.0.3

a query/request from the internet:

1. what does the (web) server 192.168.0.1 "see"? does it see the packet 
address as 1.2.3.4:80 or other internet ip?

2. what does the (web) server 192.168.0.2 "see"? does it see the packet 
address as 1.2.3.4:80 or 192.168.0.1:80 other internet ip?

3. what does the (web) server 192.168.0.3 "see"? does it see the packet 
address as 1.2.3.4:8800 or 192.168.0.1:8800 other internet ip?

Thanks in advance.







a request packet from internet





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