windows和手機(jī)連接***很常用，今天有需求在centos下面連接***；
步驟很簡單：
1.yum install ppp pptp pptp-setup
2. pptpsetup?--create<定義的名稱> --server<服務(wù)器>??--username <用戶名> --password <密碼> [--start]
<>必填,[]可選
比如：pptpsetup --create *** server 111.111.111.111? --username abc --password *** –start
3.關(guān)閉：killall pppd
4.啟用：pppd call
但是沒連上***，查看日志：
tail -100f /var/log/messages|grep ppp
Nov 19 15:23:09 151test pppd[8613]: pppd 2.4.5 started by root, uid 0
Nov 19 15:23:09 151test pppd[8613]: Using interface ppp0
Nov 19 15:23:09 151test pppd[8613]: Connect: ppp0 <--> /dev/pts/0
Nov 19 15:23:09 151test NetworkManager[704]: <info>? [1542612189.0159] manager: (ppp0): new Generic device (/org/freedesktop/NetworkManager/Devices/6)
Nov 19 15:23:12 151test pppd[8613]: EAP: peer reports authentication failure
Nov 19 15:23:12 151test pppd[8613]: Connection terminated.
Nov 19 15:23:12 151test pptp[8614]: anon warn[decaps_hdlc:pptp_gre.c:229]: pppd may have shutdown, see pppd log
Nov 19 15:23:12 151test pppd[8613]: Exit.
vi /etc/ppp/options?不是options.pptp,默認(rèn)里面是lock，刪除lock添加以下配置：
refuse-pap
refuse-eap
refuse-chap
refuse-mschap
require-mppe
再啟動試試：
pppd call ***
tail -100f /var/log/messages|grep ppp
Nov 19 15:43:58 151test pppd[8871]: pppd 2.4.5 started by root, uid 0
Nov 19 15:43:58 151test pppd[8871]: Using interface ppp0
Nov 19 15:43:58 151test pppd[8871]: Connect: ppp0 <--> /dev/pts/2
Nov 19 15:43:58 151test NetworkManager[704]: <info>? [1542613438.8796] manager: (ppp0): new Generic device (/org/freedesktop/NetworkManager/Devices/9)
Nov 19 15:44:02 151test pppd[8871]: CHAP authentication succeeded
Nov 19 15:44:02 151test pppd[8871]: MPPE 128-bit stateless compression enabled
Nov 19 15:44:05 151test pppd[8871]: local? IP address 172.18.18.13
Ok,至此***連到服務(wù)器了，但是上網(wǎng)沒走***，還是有問題：
? ? [root@151test log]# ip a |grep ppp
? ? ?9: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1396 qdisc pfifo_fast state UNKNOWN qlen 3
??? link/ppp
inet 172.18.18.13 peer 172.18.18.10/32 scope global ppp0
[root@151test log]# route -n? 小程序開發(fā)找上海捌躍網(wǎng)絡(luò)科技有限公司
Kernel IP routing table
Destination???? Gateway???????? Genmask???????? Flags Metric Ref??? Use Iface
0.0.0.0???????? 192.168.1.1???? 0.0.0.0???????? UG??? 100??? 0??????? 0 ens33
111.111.111.111? ? 192.168.1.1???? 255.255.255.255 UGH?? 0????? 0??????? 0 ens33
172.17.0.0????? 0.0.0.0???????? 255.255.0.0???? U???? 0????? 0??????? 0 docker0
172.18.18.10??? 0.0.0.0???????? 255.255.255.255 UH??? 0????? 0??????? 0 ppp0
172.18.18.13??? 0.0.0.0???????? 255.255.255.255 UH??? 0????? 0??????? 0 ppp0
192.168.1.0???? 0.0.0.0???????? 255.255.255.0?? U???? 100??? 0??????? 0 ens33
這里需要將ppp0的路由設(shè)為：將所有對外網(wǎng)絡(luò)都通過ppp0路由：
[root@151test log]# route add -net 0.0.0.0 dev ppp0
?route -n
Kernel IP routing table
Destination???? Gateway???????? Genmask???????? Flags Metric Ref??? Use Iface
0.0.0.0???????? 0.0.0.0???????? 0.0.0.0???????? U???? 0????? 0??????? 0 ppp0
0.0.0.0???????? 192.168.1.1???? 0.0.0.0???????? UG??? 100??? 0??????? 0 ens33
111.111.111.111? ? 192.168.1.1???? 255.255.255.255 UGH?? 0????? 0??????? 0 ens33
172.17.0.0????? 0.0.0.0???????? 255.255.0.0???? U???? 0????? 0??????? 0 docker0
172.18.18.10??? 0.0.0.0???????? 255.255.255.255 UH??? 0????? 0??????? 0 ppp0
172.18.18.13??? 0.0.0.0???????? 255.255.255.255 UH??? 0????? 0??????? 0 ppp0
192.168.1.0???? 0.0.0.0???????? 255.255.255.0?? U???? 100??? 0??????? 0 ens33
然后再試試應(yīng)該ok了。
PS：網(wǎng)上的解決方案；
若錯(cuò)誤為：
MPPE required but peer negotiation failed
說明服務(wù)端不支持MPPE加密，pptpsetup時(shí)不需要使用—encrypt選項(xiàng)?？梢允止ば薷?etc/ppp/peers/codelife文件
# vim /etc/ppp/peers/codelife
去除或者注釋掉require-mppe-128
若錯(cuò)誤為：
LCP terminated by peer (MPPE required but peer refused)
說明服務(wù)端要求MPPE加密，但是客戶端不支持，pptpsetup時(shí)漏掉了—encrypt選項(xiàng)。解決方法正好相反，往/etc/ppp/peers/codelife文件添加一行require-mppe-128
轉(zhuǎn)自：http://blog.51cto.com/xpu2001/2319008
