Presentation is loading. Please wait.

Presentation is loading. Please wait.

3-page Introduction of Firewall, NAT, and VPN

Similar presentations


Presentation on theme: "3-page Introduction of Firewall, NAT, and VPN"— Presentation transcript:

1 3-page Introduction of Firewall, NAT, and VPN
Prof. Michael Tsai 2012/10/15

2 Firewall 菜瓜布 Bit Torrent 封包 馬撒起 Firewall 規則表: 如果是小小郭的封包,直接丟掉
如果是去以下IP address的封包(x.x.x.x, y.y.y.y, z.z.z.z)直接丟掉 剩下的可以過 凱莉 小小郭

3 NAT (Network Address Translation)
只有一塊門牌發給我們,怎麼辦呢? 對照表: 菜瓜布有連到 要找助教請轉到 內部用: 菜瓜布 Src: Dest: 門牌: Src: Dest: 馬撒起 Src: Dest: 內部用: Src: Dest: 凱莉 內部用: 內部用門牌: 小小郭 內部用:

4 VPN (Virtual Private Network)
菜瓜布 內部用: 門牌: 內部用: 馬撒起 Src: x.x Dest: 凱莉 內部用: 內部用門牌: Src: Dest: Src: Dest: 小小郭 門牌: x.x 內部用: 姜姜 內部用: 透過網路連線,把通往內部的封包都先送到 ,然後再解開轉送到真正的目的地


Download ppt "3-page Introduction of Firewall, NAT, and VPN"

Similar presentations


Ads by Google