配置端口、防火墙
打开配置文件：
[root@localhost ~]# vi /etc/sysconfig/iptables
正确的配置文件：
# Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
-A INPUT -m state –state NEW -m tcp -p tcp –dport * -j ACCEPT
注意点：新开放的端口一定要在端口22后面
重启防火墙使配置生效：
[root@localhost ~]# /etc/init.d/iptables restart
查看开放端口：
[root@localhost ~]# /etc/init.d/iptables status
关闭防火墙：
[root@localhost ~]# /etc/init.d/iptables stop
修改IP
查看IP
ifconfig eth0 → 查看IP 不过输出的信息多一些
ifconfig|grep 'Bcast' → 这个输出的信息要清晰多了
修改IP并生效
编辑/etc/sysconfig/network-scripts/ifcfg-eth0，按如下设置
DEVICE=eth0
BOOTPROTO=static
HWADDR=
ONBOOT=yes
TYPE=Ethernet
IPADDR=<你的IP>
NETMASK=255.255.255.0
其中MAC地址可用ifconfig eth0命令查看
设置好后，重启network服务即可:service network restart
