CentOSLinux6.5网络及VPNClient配置

网络配置：
 /etc/sysconfig/network
  NETWORKING=yes
  NETWORKING_IPV6=yes
  HOSTNAME=localhost.localdomain
  GATEWAY=192.168.5.1

 /etc/sysconfig/network-scripts/ifcfg-eth0
  # Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
  DEVICE=eth0//用于设置网络接口的名称
  BOOTPROTO=static//用于设置网络接口是配置为静态地址（static）还是配置为dhcp；
  BROADCAST=192.168.5.255
  HWADDR=00:0C:29:D1:42:3F
  IPADDR=192.168.5.247 //设置网络接口地址
  GATEWAY=192.168.5.1 //设置网络接口的默网关
  IPV6ADDR=
  IPV6PREFIX=
  NETMASK=255.255.255.0 //设置网络接口的子网掩码
  NETWORK=192.168.5.0
  OnBOOT=yes

# iwconfig       列举无线网卡, 一般为"wlan0"

编辑 /etc/sysconfig/wpa_supplicant
 INTERFACE="-iwlan0"
 
编辑 /etc/wpa_supplicant/wpa_supplicant.conf
wpa_passphrase ESSID PASSWORD >> /etc/wpa_supplicant/wpa_supplicant.conf
 network={
        ssid="NETWORKSSID"
        scan_ssid=1
        key_mgmt=WPA-PSK
        psk="NETWORKPSK"
 }

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VPN配置

1. 安装工具
 # yum install ppp
 # yum install pptp
 # yum install pptp-setup
2. VPN配置
 # pptpsetup --create vpn_company  --server vpn.company.com --user vpn_user
  --password vpn_pass --encrypt
3. 检查配置结果
 # cat /etc/ppp/chap-secrets
  vpn_user vpn_company "vpm_pass" *
 # cat /etc/ppp/peers/vpn_company
  pty "pptp vpn.company.com --nolaunchpppd"
  lock
  refuse-eap
  noauth
  nobsdcomp
  nodeflate
  name vpn_user
  remotename vpn_company
  ipparam vpn_company
  require-mppe-128
4. 注册内核模块
 # modprobe ppp_mppe
5. 连接VPN
 # pppd call vpn_company
6. 检查连接状态
 检查日志 /var/log/messages
7. 断开连接
 # killall pppd