在PIX上配置PPPOE Client 与PPPOE SERVER进行通信 - 王万利的博客

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在PIX上配置PPPOE Client 与PPPOE SERVER进行通信

2009-04-02 16:20:57

标签：PPPOE PIX Client 休闲防火墙，

原创作品，允许转载，转载时请务必以超链接形式标明文章原始出处、作者信息和本声明。否则将追究法律责任。http://hackerjx.blog.51cto.com/383839/145289

实验说明：Cisco 1721来模拟PPPOE SERVER ,PIX501来模拟PPPOE Client

试验过程 配置CISCO 1721为PPPOE SERVER

//首先底层配置,这没什么说的，大家已经非常熟悉了~~

Router(config)#no ip domain-lookup

Router(config)#line console 0

Router(config-line)#exec-timeout 0 0

Router(config-line)#logg syn

Router(config-line)#host PPPOE_SERVER

实验拓扑：

PPPOE_SERVER(config)#int e0/0

PPPOE_SERVER(config-if)#ip add 192.168.0.1 255.255.255.0

PPPOE_SERVER(config-if)#no sh

PPPOE_SERVER(config-if)#pppoe enable //接口下开启PPPOE 会话功能

PPPOE_SERVER(config-if)#exit

PPPOE_SERVER(config)#vpdn enable //全局开启VPDN服务

PPPOE_SERVER(config)#vpdn-group PPPOE //创建VPDN拨号组，此处我设置的名称为PPPOE，注意这里创建的组名要和PIX上启用的VPDN组名要一致，不然pppoe session会话失败

PPPOE_SERVER(config-vpdn)#accept-dialin //接受拨号请求

PPPOE_SER(config-vpdn-acc-in)#protocol pppoe //指定会话协议为pppoe

PPPOE_SER(config-vpdn-acc-in)#virtual-template 1 //创建虚模板 1，表示第几个虚模板，创建虚模板之后，会立即看见Virtual-Access1, changed state to up

PPPOE_SER(config-vpdn-acc-in)#end

*Mar 1 00:06:27.707: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up

*Mar 1 00:06:28.707: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up

PPPOE_SERVER#conf t

Enter configuration commands, one per line. End with CNTL/Z.

PPPOE_SERVER(config)#int virtual-template 1 //进入虚模板1

PPPOE_SERVER(config-if)#ip unnumbered e0/0 //此处不要给虚模板配置IP地址，建议使用ip unnumbered 向物理接口E0/0借用，因为E0/0接口为outside接口，已开启pppoe enable

PPPOE_SERVER(config-if)#ppp authentication pap //指定ppp认证方式为pap，采用认证方式为PAP，认证过程会话用户名和密码为明文，你可以采用chap

PPPOE_SERVER(config-if)#peer default ip address pool ADSL //指定地址池的名称为ADSL，可以随意指定名称，但要和下面的地址池名称一致

PPPOE_SERVER(config-if)#exit

PPPOE_SERVER(config)#ip local pool ADSL 200.0.0.1 200.0.0.10 //指定地址池的地址范围，这个地址范围必须是连续的

PPPOE_SERVER(config)#username wangwanli password wangwanli //指定pppoe拨号的用户名和密码

PPPOE_SERVER(config)#end

到此PPPOE_SERVER上配置已全部完成

PIX上进行配置

pixfirewall> enable

Password:

pixfirewall#

pixfirewall# conf t

pixfirewall(config)# vpdn group PPPOE request dialout pppoe //指定vpdn会话名称PPPOE,这个名称与pppoe server上的VPDN组名是一致的

pixfirewall(config)# vpdn group PPPOE localname wangwanli //指定vpdn本地用户名

pixfirewall(config)# vpdn ?

configure mode commands/options:

group Keyword to specify a group name

username Keyword to configure username

pixfirewall(config)# vpdn group PPPOE ppp authentication pap //指定ppp认证方式为pap，与pppoe server认证方式一致

pixfirewall(config)# vpdn username wangwanli password wangwanli //指定拨号的用户名和密码

pixfirewall(config)# int e1

pixfirewall(config-if)# no sh //激活接口

pixfirewall(config-if)# nameif outside //定义接口为outside，默认的安全级别为0

INFO: Security level for "outside" set to 0 by default.

pixfirewall(config-if)# ip address pppoe setroute //从pppoe 服务器获得IP地址

pixfirewall(config-if)# end

到此PIX上的配置已经完成，如下是调试现象

pixfirewall# debug ppp auth //打开ppp 认证调试

pixfirewall# debug pppoe event //打开pppoe 拨号事件请求

debug pppoe event enabled at level 1

pixfirewall# show ip address outside ?

dhcp Show DHCP lease information

pppoe Show PPPoE interface information

| Output modifiers

<cr>

pixfirewall# show ip address outside pppoe

//PIX上完成拨号之后，查看得到的IP地址

PPPoE Assigned IP addr: 200.0.0.1 255.255.255.255 on Interface: outside

Remote IP addr: 192.168.0.1

pixfirewall# show route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area

* - candidate default, U - per-user static route, o - ODR

P - periodic downloaded static route

Gateway of last resort is 192.168.0.1 to network 0.0.0.0

S* 0.0.0.0 0.0.0.0 [1/0] via 192.168.0.1, outside

//查看路由表自动生成一条缺省路由

pixfirewall# show interface ip brief

Interface IP-Address OK? Method Status Protocol

Ethernet0 unassigned YES unset administratively down up

Ethernet1 200.0.0.1 YES manual up up

Ethernet2 unassigned YES unset up up

Ethernet3 unassigned YES unset administratively down up

pixfirewall# ping 192.168.0.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 10/20/50 ms

//通过ping测试PIX与PPPOE SERVER是可以正常通信的

pixfirewall# sh ip

//PIX上接口IP地址信息

System IP Addresses:

Interface Name IP address Subnet mask Method

Ethernet1 outside 200.0.0.1 255.255.255.255 manual

Current IP Addresses:

Interface Name IP address Subnet mask Method

Ethernet1 outside 200.0.0.1 255.255.255.255 manua

PPPOE_SERVER#show pppoe session all //查看pppoe session 所有会话详细信息

Total PPPoE sessions 1

PPPoE Session Information

session id: 1

local MAC address: cc9f.0788.0000, remote MAC address: 00aa.0001.0102

virtual access interface: Vi1.1, outgoing interface: Et0/0

117 packets sent, 117 received

1915 bytes sent, 1934 received

现在我把PIX上的E1接口重新关闭之后，再打开，再来观察一下PIX上的pppoe 的会话过程与PPPOE SERVER上的看到的pppoe 会话的四个过程，PADI---PADO-PADR-PADS 四个过程

pixfirewall# conf t

pixfirewall(config)# int e1

pixfirewall(config-if)# sh

PPPoE: Shutting down client session

PPPoE: padi timer expired

pixfirewall(config-if)# no sh

pixfirewall# PPPoE: send_padi:(Snd) Dest:ffff.ffff.ffff Src:00aa.0001.0102 Type:0x8863=PPPoE-Discovery

//开始发送广播，寻找PPPOE SERVER

PPPoE: Ver:1 Type:1 Code:09=PADI Sess:0 Len:12

PPPoE: Type:0101:SVCNAME-Service Name Len:0

PPPoE: Type:0103:HOSTUNIQ-Host Unique Tag Len:4

PPPoE: 00000001

PPPoE: PPPoE:(Rcv) Dest:00aa.0001.0102 Src:cc9f.09e4.0000 Type:0x8863=PPPoE-Discovery

PPPoE: Ver:1 Type:1 Code:07=PADO Sess:0 Len:48

PPPoE: Type:0101:SVCNAME-Service Name Len:0

PPPoE: Type:0103:HOSTUNIQ-Host Unique Tag Len:4

PPPoE: 00000001

PPPoE: Type:0102:ACNAME-AC Name Len:12

PPPoE: PPPOE_Server

PPPoE: Type:0104:ACCOOKIE-AC Cookie Len:16

PPPoE: 9682A160

PPPoE: 3EDB1E03

PPPoE: DDDF8016

PPPoE: 2E032E1C

PPPoE:

PPPoE: PADO

PPPoE: send_padr:(Snd) Dest:cc9f.09e4.0000 Src:00aa.0001.0102 Type:0x8863=PPPoE-Discovery

PPPoE: Ver:1 Type:1 Code:19=PADR Sess:0 Len:48

PPPoE: Type:0101:SVCNAME-Service Name Len:0

PPPoE: Type:0103:HOSTUNIQ-Host Unique Tag Len:4

PPPoE: 00000001

PPPoE: Type:0102:ACNAME-AC Name Len:12

PPPoE: PPPOE_Server

PPPoE: Type:0104:ACCOOKIE-AC Cookie Len:16

PPPoE: 9682A160

PPPoE: 3EDB1E03

PPPoE: DDDF8016

PPPoE: 2E032E1C

PPPoE:

PPPoE: PPPoE:(Rcv) Dest:00aa.0001.0102 Src:cc9f.09e4.0000 Type:0x8863=PPPoE-Discovery

PPPoE: Ver:1 Type:1 Code:65=PADS Sess:3 Len:48

PPPoE: Type:0101:SVCNAME-Service Name Len:0

PPPoE: Type:0103:HOSTUNIQ-Host Unique Tag Len:4

PPPoE: 00000001

PPPoE: Type:0102:ACNAME-AC Name Len:12

PPPoE: PPPOE_Server

PPPoE: Type:0104:ACCOOKIE-AC Cookie Len:16

PPPoE: 9682A160

PPPoE: 3EDB1E03

PPPoE: DDDF8016

PPPoE: 2E032E1C

PPPoE:

PPPoE: PADS

PPPoE: IN PADS from PPPoE tunnel

PPPoE: Opening PPP link and starting negotiations.

到这里PIX上的pppoe 会话已经结束，已经得到从PPPOE SERVER上分配的地址

PPPOE SERVER上开启debug之后，收到PIX上的PPPOE 会话请求

PPPOE_SERVER#

*Mar 1 00:34:17.583: PPPoE 0: I PADI R:00aa.0001.0102 L:ffff.ffff.ffff Et0/0

*Mar 1 00:34:17.583: PPPoE 0: O PADO, R:00aa.0001.0102 L:cc9f.0788.0000 Et0/0

*Mar 1 00:34:17.639: PPPoE 0: I PADR R:00aa.0001.0102 L:cc9f.0788.0000 Et0/0

*Mar 1 00:34:17.639: PPPoE : encap string prepared

*Mar 1 00:34:17.639: [2]PPPoE 2: Access IE handle allocated

*Mar 1 00:34:17.639: [2]PPPoE 2: pppoe SSS switch updated

*Mar 1 00:34:17.639: [2]PPPoE 2: AAA unique ID allocated

*Mar 1 00:34:17.643: [2]PPPoE 2: No AAA accounting method list

*Mar 1 00:34:17.643: [2]PPPoE 2: Service request sent to SSS

*Mar 1 00:34:17.643: [2]PPPoE 2: Created R:cc9f.0788.0000 L:00aa.0001.0102 Et0/0

*Mar 1 00:34:17.647: [2]PPPoE 2: State REQ_NASPORT Event MORE_KEYS

*Mar 1 00:34:17.647: [2]PPPoE 2: O PADS R:00aa.0001.0102 L:cc9f.0788.0000 Et0/0

*Mar 1 00:34:17.651: ppp2 PPP: Using default call direction

*Mar 1 00:34:17.651: ppp2 PPP: Treating connection as a dedicated line

*Mar 1 00:34:17.651: ppp2 PPP: Session handle[73000003] Session id[2]

*Mar 1 00:34:17.651: ppp2 PPP: Authorization required

*Mar 1 00:34:17.655: [2]PPPoE 2: State START_PPP Event DYN_BIND

*Mar 1 00:34:17.655: [2]PPPoE 2: data path set to PPP PPPOE_SERVER# *Mar 1 00:34:20.679: ppp2 PAP: I AUTH-REQ id 1 len 24 from "wangwanli" *Mar 1 00:34:20.679: ppp2 PAP: Authenticating peer wangwanli *Mar 1 00:34:20.687: ppp2 PPP: Sent PAP LOGIN Request *Mar 1 00:34:20.687: ppp2 PPP: Received LOGIN Response PASS *Mar 1 00:34:20.691: [2]PPPoE 2: State LCP_NEGO Event PPP_LOCAL *Mar 1 00:34:20.691: PPPoE 2/SB: Sent vtemplate request on base Vi1 *Mar 1 00:34:20.699: [2]PPPoE 2: State CREATE_VA Event VA_RESP *Mar 1 00:34:20.699: [2]PPPoE 2: Vi1.1 interface obtained *Mar 1 00:34:20.699: [2]PPPoE 2: State PTA_BIND Event STAT_BIND *Mar 1 00:34:20.699: [2]PPPoE 2: data path set to Virtual Acess PPPOE_SERVER# *Mar 1 00:34:20.703: [2]PPPoE 2: Connected PTA *Mar 1 00:34:20.707: Vi1.1 PPP: Sent LCP AUTHOR Request *Mar 1 00:34:20.707: Vi1.1 PPP: Sent IPCP AUTHOR Request *Mar 1 00:34:20.711: Vi1.1 LCP: Received AAA AUTHOR Response PASS *Mar 1 00:34:20.711: Vi1.1 IPCP: Received AAA AUTHOR Response PASS *Mar 1 00:34:20.711: Vi1.1 PAP: O AUTH-ACK id 1 len 5 //PAP认证通过

pixfirewall# show vpdn session pppoe state PPPoE Session Information (Total tunnels=1 sessions=1) SessID TunID Intf State Last Chg 3 1 outside SESSION_UP 2928 secs pixfirewall# show vpdn pppinterface //查看ppp会话，以及ppp认证方式 PPP virtual interface id = 1 PPP authentication protocol is PAP Server ip address is 192.168.0.1 Our ip address is 200.0.0.1 Transmitted Pkts: 122, Received Pkts: 121, Error Pkts: 0 MPPE key strength is None MPPE_Encrypt_Pkts: 0, MPPE_Encrypt_Bytes: 0 MPPE_Decrypt_Pkts: 0, MPPE_Decrypt_Bytes: 0 Rcvd_Out_Of_Seq_MPPE_Pkts: 0

pixfirewall#

本文出自 “王万利的博客” 博客，请务必保留此出处http://hackerjx.blog.51cto.com/383839/145289