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思科ASA防火墻基本配置
Fire Wall 防火墻，它是一種位于內(nèi)部網(wǎng)絡(luò)與外部網(wǎng)絡(luò)之間的網(wǎng)絡(luò)安全系統(tǒng)，當(dāng)然，防火墻也分軟件防火墻與硬件防火墻。
硬件防火墻又分為：基于PC架構(gòu)與基于ASIC芯片
今天來聊一聊思科的硬件防火墻 Cisco ASA
Cisco ASA 防火墻產(chǎn)品線挺多：Cisco ASA5505 Cisco ASA5510 Cisco ASA5520 Cisco ASA5540 Cisco ASA5550 等等
ASA 的基本配置步驟如下：
配置主機(jī)名、域名
hostname [hostname]
domain-name xx.xx
hostname Cisco-ASA 5520
domain-name ciscosas.com.cn
配置登陸用戶名密碼
password [password]
enable password [password]
配置接口、路由
interface interface_name
nameif [name]
name 有三種接口類型 insdie outside dmz
security-level xx(數(shù)值)
數(shù)值越大接口安全級別越高
注：默認(rèn)inside 100 ,outside 0 ,dmz 介于二者之間
靜態(tài)路由
route interface_number network mask next-hop-address
route outside 0.0.0.0 0.0.0.0 210.210.210.1
配置遠(yuǎn)程管理接入
Telnet
telnet {network | ip-address } mask interface_name
telnet 192.168.1.0 255.255.255.0 inside
telnet 210.210.210.0 255.255.255.0 outside
SSH
crypto key generate rsa modulus {1024| 2048 }
指定rsa系數(shù)，思科推薦1024
ssh timeout minutes
ssh version version_number
crypto key generate rsa modulus 1024
ssh timeout 30
ssh version 2
配置 ASDM(自適應(yīng)安全設(shè)備管理器)接入
http server enbale port 啟用功能
http {networdk | ip_address } mask interface_name
asdm image disk0:/asdm_file_name 指定文件位置
username user password password privilege 15
NAT
nat-control
nat interface_name nat_id local_ip mask
global interface_name nat_id {global-ip [global-ip] |interface}
nat-control
nat inside 1 192.168.1.0 255.255.255.0
global outside 1 interface
global dmz 1 192.168.202.100-192.168.202.150
ACL
access-list list-name standad permit | deny ip mask
access-list list-name extendad permit | deny protocol source-ip mask destnation-ip mask port
access-group list-name in | out interface interface_name
如果內(nèi)網(wǎng)服務(wù)器需要以布到公網(wǎng)上
staic real-interface mapped-interface mapped-ip real-ip
staic (dmz,outside) 210.210.202.100 192.168.202.1
保存配置
wirte memory
清除配置
clear configure (all)
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