VPN Interface PPP - Viptela Documentation
CHAP does not have these deficiencies. With CHAP, the authenticator (i.e. the server) sends a randomly generated ``challenge'' string to the client, along with its hostname. The client uses the hostname to look up the appropriate secret, combines it with the challenge, and encrypts the string using a one-way hashing function. Chapter 23 Managing PPP (System Administration Guide Add an entry with the IP address and host name of the PPP network interface for the dial-in server on the other end of the link. In Figure 23-1, nomada must have in its /etc/inet/hosts file an entry with the IP address for dial-in server nubian's PPP network interface. This is true also for the /etc/inet/hosts files for nomadb and nomadc. PPP - STUDYBLUE ppp chap hostname client. ppp chap password 0 cisco. dialer presistent ( keep dialer interface without interesting traffic) end. interface FastEthernet0/0. no ip address. pppoe-client dial-pool-number 1 ( have to match with pool number of dialer interface) ! hostname Router ! boot-start-marker boot-end-marker ppp authentication chap callin. ppp chap hostname ***** ppp chap password 0 *****! interface BVI1. no ip address. ip nat inside. ip virtual-reassembly in! ip default-gateway 10.10.100.1. ip forward-protocol nd. no ip http server. no ip http secure-server!!
ppp chap hostname Cust1. Sets the chap hostname to be used as "Cust1" ppp chap password ciscopppoe. Sets the chap password to "ciscopppoe" Set the static default
The hostname and password configured on the PPPoE Client router must match the hostname and password configured on the PPPoE Server router. In this case, the commands ppp chap hostname TUT & ppp chap password MyPPPoE tells the router to use “TUT” & “MyPPPoE” as the username & password to authenticate with the server. Step 3: Configure PPP CHAP Authentication Between R3 and ISP. a. Enter the following commands into ISP. The hostname is sent as the username: Router(config)# hostname ISP ISP(config)# username R3 secret cisco ISP(config)# interface s0/0/0 ISP(config-if)# ppp authentication chap. b. Enter the following commands into R3. The passwords must match PPPoE is the ability to negotiate a direct PPP link between multiple layer 3 devices through a layer 2 switched infrastructure. This negotiation then allows the encapsulation of IP packets inside of PPP which is then encapsulated inside an Ethernet frame.
On one of the dialer interfaces I have used the 'ppp chap hostname ' command to send a predefined host name. When dialing in to this interface I can see from the debug that the router hostname is still being sent. If a username/password pair is set up for the router hostname the connection is made OK. When dialing out from this interface it sends the predefined hostname.
! hostname Router ! boot-start-marker boot-end-marker