下面我们针对ppp的脚本内容进行一下讲解。希望大家能够通过文章内容的分享,了解配置和编写过程。
PPP拨号设置,在很多平台上都有相关的操作。那么这里我们则重点讲解一下平台: L350和N300平台上测试均通过的PPP脚本内容。那么现在就让我们看下具体内容吧。希望对大家有所应用。
- /apps/etc/ppp>:uname-a
- Linuxnetaccess2.6.22.1#17ThuJan718:03:30EST2010armv5tejlunknown
pppd会从/etc/ppp下读取相关配置文件,由于调试时会经常修改这些配置文件,所以建立了一个符号链接到我们的Nandflash分区上:
- /apps/etc/ppp>:ls-l/etc/ppp
- lrwxrwxrwx1rootroot13Nov202009/etc/ppp->/apps/etc/ppp
当使用pppd作ppp server时,主要有以下配置文件。在下面的文档中,将详细介绍他们:
- /apps/etc/ppp>:ls
- chap-secretsgprs-start-chatoptionsoptions.ttyS1pap-secrets
pppd运行参数文件/etc/ppp/options
该文件指定pppd运行的参数,若运行pppd时通过命令行指定的参数同时出现在该配置文件里时,pppd将使用/etc/ppp/options中的配置。关于pppd支持的一些参数,可以在我们PC的linux上使用man命令查询(man pppd)
[guowenxue@localhost ~]$ man 8 pppd
PPPD(8) PPPD(8)NAME
pppd - Point-to-Point Protocol DaemonSYNOPSIS
pppd [ options ]/apps/etc/ppp >: cat options
#tty Options
/dev/ttyS1 #例如,这里可以将/dev/ttyS1注释,然后使用命令行#pppd /dev/ttyS1 运行来指定;
115200
#lock
modem
nocrtscts #无硬件流控#login
nodetach #若指定updetach则拨号成功后放入后台运行,若为nodetach,则在前台执行debug
#Auth options
auth #使能Authentication
+pap #使用pap认证
-chap #不要支持chap认证# 源码ppp-2.4.3/pppd/tty.c中的函数connect_tty()将会执行这个脚本。主要是对客户端的拨号的应答。
connect "/usr/sbin/chat -v -E -V -f /etc/ppp/gprs-start-chat"#lcp options
#passive
asyncmap 0
lcp-echo-failure 3
lcp-echo-interval 5
ipcp-accept-local
ipcp-accept-remote
#proxyarp
netmask 255.255.255.0
ms-dns 10.78.28.10
ms-dns 10.78.28.11
nodefaultroute
gprs-start-chat chat脚本
关于chat的用法,可以在Linux PC上使用man命令查询:$ man 8 chat
- /apps/etc/ppp>:catgprs-start-chat
- ABORT'BUSY'
- ABORT'NOCARRIER'
- ABORT'NODIALTONE'
- ABORT'ERROR'
- TIMEOUT0
- '''ATZ'//首先发送ATZ重置modem
- 'OK''ATE0'//收到OK后,使用ATE0消除回显
- 'RING''ATA'//等待客户端拨号,若客户端开始拨号,Modem收到RING后,发送应答信号ATA
- 'CONNECT'''//收到CONNECT信号后,将进入下一阶段LCP的过程。
#p#options.ttyS1 IP地址分配
配置PPP服务器端(本地)IP地址和客户端(远端)的IP地址
- /apps/etc/ppp>:catoptions.ttyS1
- #Server_IP_address:Client_IP_address
- 10.78.28.194:10.78.28.224
- chap和pap认证的帐号文件:
- /apps/etc/ppp>:catpap-secrets
- #SecretsforauthenticationusingPAP
- #UserServerSecretIPAddress
- na_admin*123*
- /apps/etc/ppp>:catchap-secrets
- #SecretsforauthenticationusingCHAP
- #UserServerSecretIPAddress
- na_admin*123*
pppd启动拨号过程:
- /apps/etc/ppp>:pppd/dev/ttyS1
- OK
- ATE0//chat脚本的调试输出
- OK
- RING
- CONNECTSerialconnectionestablished.
- usingchannel1
- Usinginterfaceppp0
- Connect:ppp0<-->/dev/ttyS1
- rcvd[LCPConfReqid=0x0<asyncmap0x0><magic0x58452c14><pcomp><accomp><callbackCBCP>]
- Warning-secretfile/etc/ppp/pap-secretshasworldand/orgroupaccess
- sent[LCPConfReqid=0x1<asyncmap0x0><authpap><magic0xb701c04a><pcomp><accomp>]
- sent[LCPConfRejid=0x0<callbackCBCP>]
- rcvd[LCPConfAckid=0x1<asyncmap0x0><authpap><magic0xb701c04a><pcomp><accomp>]
- rcvd[LCPConfReqid=0x1<asyncmap0x0><magic0x58452c14><pcomp><accomp>]
- sent[LCPConfAckid=0x1<asyncmap0x0><magic0x58452c14><pcomp><accomp>]
- sent[LCPEchoReqid=0x0magic=0xb701c04a]
- rcvd[LCPcode=0xcid=0x258452c144d5352415356352e3130]
- sent[LCPCodeRejid=0x20c02001258452c144d5352415356352e3130]
- rcvd[LCPcode=0xcid=0x358452c144d535241532d302d4d454951494e50433031]
- sent[LCPCodeRejid=0x30c03001a58452c144d535241532d302d4d454951494e50433031]
- rcvd[PAPAuthReqid=0xcuser="na_admin"password=<hidden>]
- Warning-secretfile/etc/ppp/pap-secretshasworldand/orgroupaccess
- sent[PAPAuthAckid=0xc"Loginok"]
- PAPpeerauthenticationsucceededforna_admin
- sent[CCPConfReqid=0x1<deflate15><deflate(old#)15><bsdv115>]
- sent[IPCPConfReqid=0x1<compressVJ0f01><addr10.78.28.194>]
- rcvd[LCPEchoRepid=0x0magic=0x58452c14]
- rcvd[CCPConfReqid=0x4<120600000001>]
- sent[CCPConfRejid=0x4<120600000001>]
- rcvd[IPCPConfReqid=0x5<compressVJ0f01><addr0.0.0.0><ms-dns10.0.0.0><ms-wins0.0.0.0><ms-
- dns30.0.0.0><ms-wins0.0.0.0>]
- sent[IPCPConfRejid=0x5<ms-wins0.0.0.0><ms-wins0.0.0.0>]
- rcvd[CCPConfRejid=0x1<deflate15><deflate(old#)15><bsdv115>]
- sent[CCPConfReqid=0x2]
- rcvd[IPCPConfAckid=0x1<compressVJ0f01><addr10.78.28.194>]
- rcvd[CCPTermReqid=0x6"XE,\024\000<\315t\000\000\002\334"]
- sent[CCPTermAckid=0x6]
- rcvd[IPCPConfReqid=0x7<compressVJ0f01><addr0.0.0.0><ms-dns10.0.0.0><ms-dns30.0.0.0>]
- sent[IPCPConfNakid=0x7<addr10.78.28.224><ms-dns110.78.28.10><ms-dns310.78.28.11>]
- rcvd[IPCPConfReqid=0x8<compressVJ0f01><addr10.78.28.224><ms-dns110.78.28.10><ms-dns3
- 10.78.28.11>]
- sent[IPCPConfAckid=0x8<compressVJ0f01><addr10.78.28.224><ms-dns110.78.28.10><ms-dns3
- 10.78.28.11>]
- localIPaddress10.78.28.194
- remoteIPaddress10.78.28.224
测试
/apps/etc/ppp >: ping 10.78.28.224
PING 10.78.28.224 (10.78.28.224): 56 data bytes
64 bytes from 10.78.28.224: seq=0 ttl=64 time=194.570 ms
64 bytes from 10.78.28.224: seq=1 ttl=64 time=190.331 ms