Web public qua linux qua NAT

[Guest]

Rat mong duoc su giup do cua cac ban:

|PC |-------|Switch|------|NAT |--------|INTERNET|-------|client |

dia chi private ----------- Dia chi Public -------Internet --------Ngoai mang

Muc dich:
- Pc o trong minh di ra ngoai internet duoc qua NAT
- Lam the nao cho client truy cap duoc vao PC qua cong xxxx
- NAT su dung NAT linux
- NAT su dung iptables
- NAT o trong ra goi la NAT thuan, NAT o ngoai vao goi la NAT nguoc
- Cac ban giup toi cau nat nguoc
Cam on cac ban nhieu

[hocsinh]

iptables -t nat -A PREROUTING -p tcp -d IP_Public --dport 80 -j DNAT --to-destination IP_private
Ví du IP_Public là 203.162.1.242, IP_private là IP của web server: 10.0.0.3.
iptables -t nat -A PREROUTING -p tcp -d 203.162.1.242 --dport 80 -j DNAT --to-destination 10.0.0.2