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CiscoIronPortSystemsCiscoIronPortSystems第1页IronPortC-Series邮件网关配置指南CiscoIronPortSystemsCiscoIronPortSystemsCiscoIronPortSystems第2页目录1.前言...........................................................................................................................................................32.配置准备...................................................................................................................................................33.INBOUND模式.......................................................................................................................................33.1.网络拓扑..........................................................................................................................................33.2.需求说明..........................................................................................................................................43.3.配置步骤..........................................................................................................................................44.INBOUND+OUTBOUND模式..............................................................................................................94.1.网络拓扑..........................................................................................................................................94.2.需求说明........................................................................................................................................104.3.配置步骤-用单个LISTENER实现...............................................................................................104.4.配置步骤-用两个LISTENER实现...............................................................................................125.INBOUND+CLIENTSMTP模式......................................................................................................145.1.网络拓扑........................................................................................................................................145.2.需求说明........................................................................................................................................145.3.配置步骤........................................................................................................................................156.其他配置说明.........................................................................................................................................186.1.启用LDAP验证............................................................................................................................186.2.启用ISQ隔离区............................................................................................................................207.附录:邮件网关安装配置表.................................................................................................................227.1.邮件系统概况................................................................................................................................227.2.IRONPORT邮件网关配置...............................................................................................................23CiscoIronPortSystemsCiscoIronPortSystems第3页1.前言本文专门针对IronPortC-Series邮件安全网关(EmailSecurityAppliance,简称ESA)在常见的用户环境中,给出了用户需求分析,配置准备和配置步骤。使用过程中有什么意见和建议,欢迎联系DavidWu(wuqw@cisco.com)。使用本文档的工程师,至少需要了解以下知识:(1)SMTP和POP3基本原理(2)DNS原理及A记录、MX记录、PTR记录等概念(3)LDAP基本概念(4)常见邮件系统(如Exchange,Domino等)与邮件网关相关的配置,如智能主机SmartHost或RelayHost等。本文介绍了三种常见的用户配置环境:Inbound模式Inbound+Outbound模式Inbound+ClientSMTP模式本文档中用到的所有命令和截图都是基于AsyncOS6.5.0。2.配置准备在配置ESA之前,要做好以下准备工作:(1)根据ESA的SerialNumber,申请设备测试License。(2)将AsyncOS升级到最新版本。(3)按照邮件系统的基本状况和安装配置表(见附件)逐项填写,这将帮助了解用户的邮件系统状况和邮件收发流程。3.Inbound模式3.1.网络拓扑邮件系统网络拓扑如下:CiscoIronPortSystemsCiscoIronPortSystems第4页3.2.需求说明在Inbound配置模式中,邮件网关只负责接收来自外域的邮件:(1)从外域发往本域的邮件,根据域名MX记录的指向,先进入ESA,经过ESA的Anti-Spam/Anti-Virus/VOF过滤后,再投递到邮件服务器。(2)如果邮件被判定为肯定的垃圾邮件,直接删除(Drop);判定为可疑的垃圾邮件,放入到用户级垃圾邮件隔离区(ISQ)。用户通过客户端收发邮件的方式保持不变:(1)通过邮件客户端(如Foxmail、Outlook)收发邮件的用户,其SMTP服务器和POP3服务器的IP地址仍然指向邮件服务器;(2)通过Web方式收发邮件的用户,仍然通过http方式访问邮件服务器。3.3.配置步骤根据Inbound模式的网络拓扑,ESA配置步骤如下:(1)了解邮件服务器的域名和IP地址:邮件系统域名:shanghaimx.com邮件服务器IP地址:192.168.81.100(2)给ESA提供内网IP地址,以及缺省网关地址,DNS服务器地址:IP:192.168.81.40Gateway:192.168.81.254DNS:192.168.114.1/202.96.209.5CiscoIronPortSystemsCiscoIronPortSystems第5页(3)修改防火墙上公网地址与内网地址的映射,将域名shanghaimx.com的MX记录的IP地址,映射为192.168.81.40。(4)在防火墙上开放以下TCP/UDP端口:端口协议In/Out说明25TCPIn/Out用于收发邮件53TCP/UDPOut查询Senderbase信誉得分和DNS解析80TCPOut更新anti-spam/anti-virus/vof规则22/443TCPIn远程管理(5)通过Management网络端口连接到ESA设备,启动浏览器,输入,缺省登陆帐号的用户名是admin,密码为ironport。(6)初始化配置通过配置向导(SystemWizard),分为5步:a)接受许可协议b)系统基本设置CiscoIronPortSystemsCiscoIronPortSystems第6页c)网络和邮件接收设置将192.168.81.40配置到网口Data2上,并在Data2上选中“Acceptmailonthisinterface”,表明在Data2上创建一个邮件接收的Listener。在本例中,设定发往shanghaimx.com域的邮件将投递到192.168.81.100。d)邮件安全模块设置CiscoIronPortSystemsCiscoIronPortSystems第7页e)确认配置并安装在确认无误后,点击“InstallThisConfiguration”,初始化配置完成。(7)初始化后系统策略设置以下给出的策略和参数设置是推荐值,在实际配置时,需要根据用户的要求进行修改。CiscoIronPortSystemsCiscoIronPortSystems第8页a)修改HAT表GUI:Mailpolicies
本文标题:Irnoport 邮件网关配置手册
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