Juniper firewall多進單出配置。想法是這樣的用一台firewall將這幾條ISP線路都接入，再通過一個trunk口出來，通過一台L2 switch劃分出幾個VLAN，分別對應不同的ISP線路。這樣做的好處就不多说了，最起码省了在firewall上使用的端口吧，嘎嘎。可能你會擔心端口帶寬問題。試驗用的是Juniper SSG140 一共有10個端口，前8個為百兆帶寬，最後2個為千兆端口，所以這樣的架構不存在端口帶寬瓶頸問題。

架構圖如下

這裡簡要介紹下試驗環境。

網通線路：ip：192.168.20.200/24

電信線路：ip：192.168.30.200/24

VLAN2 對應Eth0/1網通線路 Eth0/9.1 VLAN2 192.168.2.0/24

VLAN3對應Eth0/2電信線路 Eth0/9.2 VLAN3 192.168.3.0/24

其中便與管理將Eeh0/0也做了配製，NAT模式 ip：192.168.1.1/24

也將Eth0/3做了配製，ROUTE模式 且增加了路由及策略

這裡增加的配置和試驗需要配置的不構成影響

firewall配置如下：

set admin name "netscreen"

set admin password "nKVUM2rwMUzPcrkG5sWIHdCtqkAibn"

set admin auth web timeout 0

set admin auth server "Local"

set admin format dos

set zone "Trust" vrouter "trust-vr"

set zone "Untrust" vrouter "trust-vr"

set zone "DMZ" vrouter "trust-vr"

set zone "VLAN" vrouter "trust-vr"

set zone "Untrust-Tun" vrouter "trust-vr"

set zone "Trust" tcp-rst

set zone "Untrust" block

unset zone "Untrust" tcp-rst

set zone "MGT" block

set zone "DMZ" tcp-rst

set zone "VLAN" block

unset zone "VLAN" tcp-rst

set zone "Untrust" screen tear-drop

set zone "Untrust" screen syn-flood

set zone "Untrust" screen ping-death

set zone "Untrust" screen ip-filter-src

set zone "Untrust" screen land

set zone "V1-Untrust" screen tear-drop

set zone "V1-Untrust" screen syn-flood

set zone "V1-Untrust" screen ping-death

set zone "V1-Untrust" screen ip-filter-src

set zone "V1-Untrust" screen land

set interface "ethernet0/0" zone "Trust" //設置端口

set interface "ethernet0/1" zone "Untrust"

set interface "ethernet0/2" zone "Untrust"

set interface "ethernet0/3" zone "Untrust"

set interface "ethernet0/4" zone "HA"

set interface "ethernet0/9" zone "Trust"

set interface "ethernet0/9.1" tag 2 zone "Trust"

set interface "ethernet0/9.2" tag 3 zone "Trust"

set interface "ethernet0/9.3" tag 4 zone "Trust"

set interface ethernet0/0 ip 192.168.1.1/24

set interface ethernet0/0 nat

unset interface vlan1 ip

set interface ethernet0/1 ip 192.168.20.200/24 //端口route模式配置

set interface ethernet0/1 route

set interface ethernet0/2 ip 192.168.30.200/24

set interface ethernet0/2 route

set interface ethernet0/3 ip 10.129.21.200/24

set interface ethernet0/3 route

set interface ethernet0/9.1 ip 192.168.2.1/24 //端口NAT模式配置

set interface ethernet0/9.1 nat

set interface ethernet0/9.2 ip 192.168.3.1/24

set interface ethernet0/9.2 nat

set interface ethernet0/9.3 ip 192.168.4.1/24

set interface ethernet0/9.3 nat

set interface ethernet0/9.1 mtu 1500

unset interface vlan1 bypass-others-ipsec

unset interface vlan1 bypass-non-ip

set interface ethernet0/0 ip manageable

set interface ethernet0/1 ip manageable //配製各個端口管理地址及允許服務

set interface ethernet0/2 ip manageable

set interface ethernet0/3 ip manageable

unset interface ethernet0/9 ip manageable

set interface ethernet0/9.1 ip manageable

set interface ethernet0/9.2 ip manageable

set interface ethernet0/9.3 ip manageable

set interface ethernet0/1 manage ping

set interface ethernet0/1 manage telnet

set interface ethernet0/1 manage web

set interface ethernet0/2 manage ping

set interface ethernet0/2 manage telnet

set interface ethernet0/2 manage web

set interface ethernet0/3 manage ping

set interface ethernet0/3 manage telnet

set interface ethernet0/3 manage web

unset interface ethernet0/9 manage ping

unset interface ethernet0/9 manage ssh

unset interface ethernet0/9 manage telnet

unset interface ethernet0/9 manage snmp

unset interface ethernet0/9 manage ssl

unset interface ethernet0/9 manage web

unset interface ethernet0/9.1 manage ssh

unset interface ethernet0/9.1 manage snmp

unset interface ethernet0/9.1 manage ssl

unset interface ethernet0/9.2 manage ssh

unset interface ethernet0/9.2 manage snmp

unset interface ethernet0/9.2 manage ssl

unset interface ethernet0/9.3 manage ssh

unset interface ethernet0/9.3 manage snmp

unset interface ethernet0/9.3 manage ssl

set interface ethernet0/0 dhcp server service //各個端口DHCP配置

set interface ethernet0/9.1 dhcp server service

set interface ethernet0/9.2 dhcp server service

set interface ethernet0/0 dhcp server enable

set interface ethernet0/9.1 dhcp server enable

set interface ethernet0/9.2 dhcp server enable

set interface ethernet0/0 dhcp server option lease 1440

set interface ethernet0/0 dhcp server option gateway 192.168.1.1

set interface ethernet0/0 dhcp server option netmask 255.255.255.0

set interface ethernet0/0 dhcp server option dns1 10.128.2.101

set interface ethernet0/0 dhcp server option dns2 10.128.2.100

set interface ethernet0/9.1 dhcp server option lease 1440

set interface ethernet0/9.1 dhcp server option gateway 192.168.2.1

set interface ethernet0/9.1 dhcp server option netmask 255.255.255.0

set interface ethernet0/9.1 dhcp server option dns1 221.6.4.66

set interface ethernet0/9.2 dhcp server option lease 1440

set interface ethernet0/9.2 dhcp server option gateway 192.168.3.1

set interface ethernet0/9.2 dhcp server option netmask 255.255.255.0

set interface ethernet0/9.2 dhcp server option dns1 221.6.4.65

set interface ethernet0/9.2 dhcp server option dns2 221.6.4.66

set interface ethernet0/0 dhcp server ip 192.168.1.50 to 192.168.1.100

set interface ethernet0/9.1 dhcp server ip 192.168.2.50 to 192.168.2.100

set interface ethernet0/9.2 dhcp server ip 192.168.3.50 to 192.168.3.100

unset interface ethernet0/0 dhcp server config next-server-ip

unset interface ethernet0/9.1 dhcp server config next-server-ip

unset interface ethernet0/9.2 dhcp server config next-server-ip

unset flow no-tcp-seq-check

set flow tcp-syn-check

unset flow tcp-syn-bit-check

set flow reverse-route clear-text prefer

set flow reverse-route tunnel always

set pki authority default scep mode "auto"

set pki x509 default cert-path partial

set address "Trust" "192.168.1.0/24" 192.168.1.0 255.255.255.0

set address "Trust" "192.168.2.0/24" 192.168.2.0 255.255.255.0

set address "Trust" "192.168.3.0/24" 192.168.3.0 255.255.255.0

set ike respond-bad-spi 1

set ike ikev2 ike-sa-soft-lifetime 60

unset ike ikeid-enumeration

unset ike dos-protection

unset ipsec access-session enable

set ipsec access-session maximum 5000

set ipsec access-session upper-threshold 0

set ipsec access-session lower-threshold 0

set ipsec access-session dead-p2-sa-timeout 0

unset ipsec access-session log-error

unset ipsec access-session info-exch-connected

unset ipsec access-session use-error-log

set vrouter "untrust-vr"

exit

set vrouter "trust-vr"

exit

set url protocol websense

exit

set policy id 4 name "0/0 TO 0/1" from "Trust" to "Untrust" "192.168.1.0/24" "Any" "ANY" permit log //策略配製

set policy id 4

exit

set policy id 1 name "any to any" from "Trust" to "Untrust" "Any" "Any" "ANY" permit log

set policy id 1 disable

set policy id 1

exit

set policy id 2 name "VLAN2 TO 0/1" from "Trust" to "Untrust" "192.168.2.0/24" "Any" "ANY" permit log

set policy id 2

exit

set policy id 3 name "VLAN3 TO 0/2" from "Trust" to "Untrust" "192.168.3.0/24" "Any" "ANY" permit log

set policy id 3

exit

set nsmgmt bulkcli reboot-timeout 60

set ssh version v2

set config lock timeout 5

unset license-key auto-update

set snmp port listen 161

set snmp port trap 162

set vrouter "untrust-vr"

exit

set vrouter "trust-vr"

set source-routing enable

unset add-default-route

set route 10.0.0.0/8 interface ethernet0/3 gateway 10.129.21.254 //路由配置

set route 0.0.0.0/0 interface ethernet0/1 gateway 192.168.20.1 metric 10

set route source 192.168.2.0/24 interface ethernet0/1 gateway 192.168.20.1 permanent

set route source 192.168.3.0/24 interface ethernet0/2 gateway 192.168.30.1 permanent

驗證，分別接入VLAN中通過ping命令，并通過拔插網線驗證走的哪一條線路。沒有問題。试验成功。嘎嘎

这个实验最要紧的设置就是那几句基于原地址的路由了，不过公司如果要实际应用建议设置policy时候不要any到any了。

应大家的要求今天重新实验上图。

interface设置：

端口上DHCP设置：

路由配置：

policy设置：

game over，就是这么简单！