準備篇：
1、配置防火墻，開啟80端口、3306端口
說明：Ubuntu默認安裝是沒有開啟任何防火墻的，為了服務器的安全，建議大家安裝啟用防火墻設置，這里推薦使用iptables防火墻。
whereis iptables #查看系統是否安裝防火墻iptables: /sbin/iptables /usr/share/iptables /usr/share/man/man8/iptables.8.gz #表示已經安裝iptablesapt-get install iptables #如果默認沒有安裝，請運行此命令安裝防火墻iptables -L #查看防火墻配置信息，顯示如下：#####################################################
Chain INPUT (policy ACCEPT)target prot opt source destinationChain FORWARD (policy ACCEPT)
target prot opt source destinationChain OUTPUT (policy ACCEPT)
target prot opt source destination#####################################################nano /etc/iptables.default.rules #添加以下內容##################################################################################################*filter# Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0-A INPUT -i lo -j ACCEPT# Accepts all established inbound connections-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT# Allows all outbound traffic# You could modify this to only allow certain traffic-A OUTPUT -j ACCEPT# Allows HTTP and MySQLconnections from anywhere (the normal ports for websites)-A INPUT -p tcp --dport 80 -j ACCEPT-A INPUT -p tcp --dport 3306 -j ACCEPT# Allows SSH connections for script kiddies# THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT# Now you should read up on iptables rules and consider whether ssh access# for everyone is really desired. Most likely you will only allow access from certain IPs.# Allow ping-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT# log iptables denied calls (access via 'dmesg' command)-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7# Reject all other inbound - default deny unless explicitly allowed policy:-A INPUT -j REJECT-A FORWARD -j REJECTCOMMIT##################################################################################################ctrl+o #保存ctrl+x #退出備注：80是指web服務器端口、3306是指MySQL數據庫鏈接端口、22是指SSH遠程管理端口iptables-restore < /etc/iptables.default.rules #使防火墻規則生效nano /etc/network/if-pre-up.d/iptables #創建文件，添加以下內容，使防火墻開機啟動###########################################################!/bin/bash/sbin/iptables-restore </etc/iptables.default.rules##########################################################chmod +x /etc/network/if-pre-up.d/iptables #添加執行權限安裝篇
一、安裝apache
apt-get install apache2 #安裝apache，根據提示輸入y安裝
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