juniper SRX防火墻NAT測試

1.測試拓撲：

2.測試總結：

3.基本配置：

A.路由器R1：

interface Ethernet0/0
 ip address 202.100.1.1 255.255.255.0
 no shut

B.防火墻SRX:

①配置接口地址：

set interfacesge-0/0/0.0family inetaddress 202.100.1.10/24

set interfacesge-0/0/1.0family inetaddress 10.1.1.10/24

set interfacesge-0/0/2.0family inetaddress 192.168.1.10/24

②將接口劃入zone：

setsecurity zones security-zone untrust interfacesge-0/0/0.0

setsecurity zones security-zone trust interfacesge-0/0/1.0

setsecurity zones security-zone dmz interfacesge-0/0/2.0

③配置zone間策略，允許trust到untrust的任何訪問：

setsecurity policies from-zone trust to-zone untrust policy Permit-All match source-address any

setsecurity policies from-zone trust to-zone untrust policy Permit-All match destination-address any

setsecurity policies from-zone trust to-zone untrust policy Permit-All match application any

setsecurity policies from-zone trust to-zone untrust policy Permit-All then  permit

④配置zone間策略，允許DMZ到untrust的任何訪問：

set security policies from-zone dmz to-zoneuntrust policy Permit-All match source-address any

set security policies from-zone dmz to-zoneuntrust policy Permit-All match destination-address any

set security policies from-zone dmz to-zoneuntrust policy Permit-All match application any

set security policies from-zone dmz to-zoneuntrustpolicy Permit-All then permit

C.主機PC1：

IP:10.1.1.8/24

GW:10.1.1.10

D.路由器R2：

interface f0/0
 ip address 192.168.1.2 255.255.255.0

 no shut

ip route 0.0.0.0 0.0.0.0 192.168.1.10

4.NAT配置：

A.第一種NAT:

Source NAT：Interface NAT配置:

A.指定NAT的zone：

setsecurity nat sourcerule-set Source-NAT from zone trust

setsecurity nat sourcerule-setSource-NATto zone untrust

B.配置Interface NAT:

setsecurity nat source rule-set Source-NAT rule NAT-Interface match source-address 0.0.0.0/0

setsecurity nat source rule-set Source-NAT rule NAT-Interface match destination-address 0.0.0.0/0

setsecurity nat source rule-set Source-NAT rule NAT-Interface then source-nat interface

C.提交配置：

commit

D.驗證：

從主機PC1上面ping路由器R1接口地址，并在R1上debug ip icmp，可以看到ICMP源地址為防火墻接口地址

R1#
*Mar 2 01:35:56.797: ICMP: echo reply sent, src 202.100.1.1, dst 202.100.1.10
*Mar 2 01:35:57.793: ICMP: echo reply sent, src 202.100.1.1, dst 202.100.1.10
*Mar 2 01:35:58.809: ICMP: echo reply sent, src 202.100.1.1, dst 202.100.1.10
*Mar 2 01:35:59.749: ICMP: echo reply sent, src 202.100.1.1, dst 202.100.1.10
R1#

B.第二種NAT:

Source NAT：pool based nat配置:

A.配置地址池：

set security nat source pool src-nat-pool1address 202.100.1.11 to 202.100.1.13

B.指定NAT的zone（前面已經配置，可以不配）：

set security nat source rule-set Source-NAT from zone trust

set security nat sourcerule-set Source-NATto zone untrust

C.配置pool based nat：

set security nat source rule-set Source-NAT rule NAT-pool match source-address 0.0.0.0/0

sets ecurity nat source rule-set Source-NAT rule NAT-pool match destination-address 0.0.0.0/0