In questo documento viene descritto come configurare uno scenario VPDN (Virtual Private Dialup Network) L2TP (Layer 2 Tunnel Protocol) utilizzando gli attributi del tunnel scaricati da un server RADIUS. In questo esempio, L2TP Access Concentrator (LAC) riceve la connessione in ingresso e contatta il server RADIUS LAC. Il server RADIUS cerca gli attributi del tunnel per il dominio dell'utente (ad esempio, cisco.com) e passa gli attributi del tunnel al LAC. In base a questi attributi, il LAC avvia un tunnel verso il server di rete L2TP (LNS). Una volta stabilito il tunnel, il sistema LNS autentica l'utente finale utilizzando il proprio server RADIUS.
Nota: in questo documento si presume che il server NAS (LAC) sia stato configurato per l'accesso dial-up generale. Per ulteriori informazioni su come configurare la composizione, consultare il documento sulla configurazione della base AAA RADIUS per i client di chiamata in ingresso.
Per ulteriori informazioni su L2TP e VPDN, fare riferimento a questi documenti:
Nessun requisito specifico previsto per questo documento.
Le informazioni fornite in questo documento si basano sulle seguenti versioni software e hardware:
Due router Cisco 2511
Software Cisco IOS® versione 12.0(2).T
Cisco Secure ACS per UNIX, Cisco Secure ACS per Windows o Merit RADIUS
Le informazioni discusse in questo documento fanno riferimento a dispositivi usati in uno specifico ambiente di emulazione. Su tutti i dispositivi menzionati nel documento la configurazione è stata ripristinata ai valori predefiniti. Se la rete è operativa, valutare attentamente eventuali conseguenze derivanti dall'uso dei comandi.
Per ulteriori informazioni sulle convenzioni usate, consultare il documento Cisco sulle convenzioni nei suggerimenti tecnici.
In questa sezione vengono presentate le informazioni necessarie per configurare le funzionalità descritte più avanti nel documento.
Nota: per ulteriori informazioni sui comandi menzionati in questo documento, usare lo strumento di ricerca dei comandi (solo utenti registrati).
Per la stesura di questo documento è stata utilizzata la configurazione di rete illustrata in questo diagramma.
La configurazione LAC RADIUS include l'utente "rtp.cisco.com" (che è il dominio utilizzato dal client). La password di questo utente deve essere cisco.
# ./ViewProfile -p 9900 -u rtp.cisco.com user = rtp.cisco.com{ radius=Cisco { check_items= { 2="cisco" } reply_attributes= { 6=5 9,1="vpdn:tunnel-id=DEFGH" 9,1="vpdn:tunnel-type=l2tp" 9,1="vpdn:ip-addresses=10.31.1.9" 9,1="vpdn:l2tp-tunnel-password=ABCDE" } } }
Per ulteriori informazioni sulla configurazione di RADIUS sul LAC, consultare la sezione RADIUS Profile for Use by the LAC in the Layer 2 Tunnel Protocol.
# ./ViewProfile -p 9900 -u janedoe@rtp.cisco.com user = janedoe@rtp.cisco.com{ radius=Cisco { check_items= { 2="rtp" } reply_attributes= { 6=2 7=1 } } }
Attenersi alla seguente procedura:
Nell'area Configurazione rete configurare l'autenticazione LAC Network Access Server (NAS) per l'utilizzo di RADIUS (Cisco IOS/PIX).
Configurare l'utente 'rtp.cisco.com' con la password cisco sia per plain che per CHAP. Nome utente utilizzato per gli attributi del tunnel.
Fare clic sul pulsante Impostazioni gruppo nella barra di navigazione a sinistra. Selezionare il gruppo a cui appartiene l'utente e fare clic su Modifica impostazioni. Scorrere fino alla sezione IETF RADIUS e selezionare Attribute 6 Service-Type come Outbound. .
Se non vengono visualizzate tutte le opzioni selezionabili, accedere a Configurazione interfaccia e selezionare le varie caselle per visualizzarle nell'area gruppo.
Nella sezione inferiore degli attributi Cisco IOS/PIX RADIUS, selezionare la casella 009\001 cisco-av-pair e digitare quanto segue nella casella:
vpdn:tunnel-id=DEFGH vpdn:tunnel-type=l2tp vpdn:ip-addresses=10.31.1.9 vpdn:l2tp-tunnel-password=ABCDE
Per ulteriori informazioni sulla configurazione di RADIUS sul LAC, consultare la sezione RADIUS Profile for Use by the LAC within Layer 2 Tunnel Protocol.
Attenersi alla seguente procedura:
Configurare l'ID utente janedoe@rtp.cisco.com e immettere una password per la protezione CHAP e semplice.
Fare clic sul pulsante Imposta gruppo nella barra sinistra. Selezionare il gruppo a cui appartiene l'utente e fare clic su Modifica impostazioni.
Nella sezione relativa agli attributi RADIUS IETF (Internet Engineering Task Force) selezionare Service-type (attributo 6) = Framed and Framed-Protocol (attributo 7)=PPP dal menu a discesa.
Nota: è necessario anche fare clic sulla casella di controllo accanto agli attributi Service-Type e Framed-Protocol selezionati.
Nota: i server Livingston e Merit devono essere modificati di frequente per supportare coppie av specifiche del fornitore.
rtp.cisco.com Password = "cisco" Service-Type = Outbound-User, cisco-avpair = "vpdn:tunnel-id=DEFGH", cisco-avpair = "vpdn:tunnel-type=l2tp", cisco-avpair = "vpdn:ip-addresses=10.31.1.9", cisco-avpair = "vpdn:l2tp-tunnel-password=ABCDE"
Per ulteriori informazioni sulla configurazione di RADIUS sul LAC, consultare la sezione RADIUS Profile for Use by the LAC within Layer 2 Tunnel Protocol.
janedoe@rtp.cisco.com Password = "rtp", Service-Type = Framed, Framed-Protocol = PPP
In questo documento vengono usate le seguenti configurazioni.
Configurazione router LAC |
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LAC#show run Building configuration... Current configuration: ! version 12.0 service timestamps debug datetime service timestamps log uptime no service password-encryption ! hostname LAC ! !--- AAA commands needed to authenticate the user and obtain !--- VPDN tunnel information. aaa new-model aaa authentication login default local aaa authentication ppp default if-needed radius aaa authorization network default radius aaa accounting exec default start-stop radius aaa accounting network default start-stop radius enable secret level 7 5 $1$Dj3K$9jkyuJR6fJV2JO./Qt0lC1 enable password ww ! username cse password 0 csecse username john password 0 doe ip subnet-zero no ip domain-lookup ! jnj00=tfdfr vpdn enable ! !--- VPDN tunnel authorization is based on the domain name !--- (the default is DNIS). vpdn search-order domain ! ! ! interface Loopback0 no ip address no ip directed-broadcast ! interface Ethernet0 ip address 10.31.1.6 255.255.255.0 no ip directed-broadcast ! interface Serial0 no ip address no ip directed-broadcast no ip mroute-cache shutdown ! interface Serial1 no ip address no ip directed-broadcast shutdown ! interface Async1 ip unnumbered Ethernet0 no ip directed-broadcast ip tcp header-compression passive encapsulation ppp async mode dedicated peer default ip address pool async no cdp enable ppp authentication chap ! interface Group-Async1 physical-layer async no ip address no ip directed-broadcast ! ip local pool default 10.5.5.5 10.5.5.50 ip local pool async 10.7.1.1 10.7.1.5 ip classless ip route 0.0.0.0 0.0.0.0 10.31.1.1 ! !--- RADIUS server host and key. radius-server host 171.68.118.101 auth-port 1645 acct-port 1646 radius-server key cisco ! line con 0 transport input none line 1 session-timeout 20 exec-timeout 0 0 password ww autoselect during-login autoselect ppp modem InOut transport preferred none transport output none stopbits 1 speed 38400 flowcontrol hardware line 2 16 modem InOut transport input all speed 38400 flowcontrol hardware line aux 0 line vty 0 4 password ww ! end |
Configurazione router LNS |
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LNS#show run Building configuration... Current configuration: ! ! Last configuration change at 12:17:54 UTC Sun Feb 7 1999 !==m6knr5yui6yt6egv2wr25nfd1rsion 12.0=4rservice exec-callback service timestamps debug datetime service timestamps log uptime no service password-encryption ! hostname LNS ! aaa new-model aaa authentication login default local aaa authentication ppp default radius local aaa authorization network default radius local aaa accounting exec default start-stop radius aaa accounting network default start-stop radius enable secret 5 $1$pnYM$B.FveZjZpgA3C9ZPq/cma/ enable password ww ! username john password 0 doe !--- User the_LNS is used to authenticate the tunnel. !--- The password used here must match the vpdn:l2tp-tunnel-password !--- configured in the LAC RADIUS server. username the_LNS password 0 ABCDE ip subnet-zero ! !--- Enable VPDN on the LNS. vpdn enable ! !--- VPDN group for connection from the LAC. vpdn-group 1 !--- This command specifies that the router uses !--- virtual-template 1 for tunnel-id DEFGH (which matches the tunnel-id !--- configured in the LAC RADIUS server). accept dialin l2tp virtual-template 1 remote DEFGH !--- The username used to authenticate this tunnel !--- is the_LNS (configured above). local name the_LNS ! interface Ethernet0 ip address 10.31.1.9 255.255.255.0 no ip directed-broadcast ! !--- Virtual-template that is used for the incoming connection. interface Virtual-Template1 ip unnumbered Ethernet0 no ip directed-broadcast peer default ip address pool default ppp authentication chap ! interface Serial0 no ip address no ip directed-broadcast no ip mroute-cache shutdown no fair-queue ! interface Serial1 no ip address no ip directed-broadcast shutdown ! interface Async1 ip unnumbered Ethernet0 no ip directed-broadcast encapsulation ppp async mode interactive peer default ip address pool async ppp authentication chap ! ip local pool default 10.6.1.1 10.6.1.5 ip local pool async 10.8.100.100 10.8.100.110 ip classless ip route 0.0.0.0 0.0.0.0 10.31.1.1 ! !--- RADIUS server host and key information. radius-server host 171.68.120.194 auth-port 1645 acct-port 1646 radius-server key cisco ! line con 0 transport input none line 1 session-timeout 20 exec-timeout 5 0 password ww autoselect during-login autoselect ppp modem InOut transport input all escape-character BREAK stopbits 1 speed 38400 flowcontrol hardware line 2 8 line aux 0 line vty 0 4 password ww ! end |
Le informazioni contenute in questa sezione permettono di verificare che la configurazione funzioni correttamente.
Alcuni comandi show sono supportati dallo strumento Output Interpreter (solo utenti registrati); lo strumento permette di visualizzare un'analisi dell'output del comando show.
show vpdn tunnel: visualizza le informazioni su tutti i tunnel L2TP e di inoltro di livello 2 attivi in formato di riepilogo.
show caller ip: visualizza un riepilogo delle informazioni sul chiamante per l'indirizzo IP fornito.
In questa sezione vengono fornite informazioni utili per risolvere i problemi di configurazione.
Nota: prima di usare i comandi di debug, consultare le informazioni importanti sui comandi di debug.
debug aaa authentication: visualizza le informazioni sull'autenticazione AAA/TACACS+.
debug aaa authorization: visualizza le informazioni sull'autorizzazione AAA/TACACS+.
debug aaa accounting: visualizza le informazioni sugli eventi responsabili non appena si verificano. Le informazioni visualizzate da questo comando sono indipendenti dal protocollo di accounting utilizzato per trasferire le informazioni di accounting a un server.
debug radius: visualizza informazioni di debug dettagliate associate a RADIUS.
debug vtemplate: visualizza le informazioni di duplicazione per un'interfaccia di accesso virtuale dal momento in cui viene duplicata da un modello virtuale al momento in cui l'interfaccia di accesso virtuale diventa inattiva al termine della chiamata.
debug vpdn error: visualizza gli errori che impediscono di stabilire un tunnel PPP o gli errori che causano la chiusura di un tunnel stabilito.
debug vpdn events: visualizza i messaggi relativi agli eventi che fanno parte della normale creazione o chiusura del tunnel PPP.
debug vpdn l2x-errors: visualizza gli errori del protocollo di layer 2 che impediscono la definizione del layer 2 o il normale funzionamento dello stesso.
debug vpdn l2x-events: visualizza i messaggi relativi agli eventi che fanno parte della normale definizione del tunnel PPP o del processo di arresto per il layer 2.
debug vpdn l2tp-sequencing: visualizza i messaggi relativi a L2TP.
Per una descrizione dettagliata dei debug L2TP, consultare il documento sulla configurazione e rimozione del tunnel L2TP.
LAC#show debug General OS: AAA Authentication debugging is on AAA Authorization debugging is on AAA Accounting debugging is on VPN: L2X protocol events debugging is on L2X protocol errors debugging is on VPDN events debugging is on VPDN errors debugging is on L2TP data sequencing debugging is on VTEMPLATE: Virtual Template debugging is on Radius protocol debugging is on LAC# Feb 7 12:22:16: As1 AAA/AUTHOR/FSM: (0): LCP succeeds trivially 2d18h: %LINK-3-UPDOWN: Interface Async1, changed state to up Feb 7 12:22:17: As1 VPDN: Looking for tunnel -- rtp.cisco.com -- Feb 7 12:22:17: AAA: parse name=Async1 idb type=10 tty=1 Feb 7 12:22:17: AAA: name=Async1 flags=0x11 type=4 shelf=0 slot=0 adapter=0 port=1 channel=0 Feb 7 12:22:17: AAA/AUTHEN: create_user (0x25BA84) user='rtp.cisco.com' ruser='' port='Async1' rem_addr='' authen_type=NONE service=LOGIN priv=0 Feb 7 12:22:17: AAA/AUTHOR/VPDN (6239469): Port='Async1' list='default' service=NET Feb 7 12:22:17: AAA/AUTHOR/VPDN: (6239469) user='rtp.cisco.com' Feb 7 12:22:17: AAA/AUTHOR/VPDN: (6239469) send AV service=ppp Feb 7 12:22:17: AAA/AUTHOR/VPDN: (6239469) send AV protocol=vpdn Feb 7 12:22:17: AAA/AUTHOR/VPDN (6239469) found list "default" Feb 7 12:22:17: AAA/AUTHOR/VPDN: (6239469) Method=RADIUS Feb 7 12:22:17: RADIUS: authenticating to get author data Feb 7 12:22:17: RADIUS: ustruct sharecount=2 Feb 7 12:22:17: RADIUS: Initial Transmit Async1 id 66 171.68.118.101:1645, Access-Request, len 77 Feb 7 12:22:17: Attribute 4 6 0A1F0106 Feb 7 12:22:17: Attribute 5 6 00000001 Feb 7 12:22:17: Attribute 61 6 00000000 Feb 7 12:22:17: Attribute 1 15 7274702E Feb 7 12:22:17: Attribute 2 18 6AB5A2B0 Feb 7 12:22:17: Attribute 6 6 00000005 Feb 7 12:22:17: RADIUS: Received from id 66 171.68.118.101:1645, Access-Accept, len 158 Feb 7 12:22:17: Attribute 6 6 00000005 Feb 7 12:22:17: Attribute 26 28 0000000901167670 Feb 7 12:22:17: Attribute 26 29 0000000901177670 Feb 7 12:22:17: Attribute 26 36 00000009011E7670 Feb 7 12:22:17: Attribute 26 39 0000000901217670 Feb 7 12:22:17: RADIUS: saved authorization data for user 25BA84 at 24C488 !--- RADIUS server supplies the VPDN tunnel attributes. Feb 7 12:22:17: RADIUS: cisco AVPair "vpdn:tunnel-id=DEFGH" Feb 7 12:22:17: RADIUS: cisco AVPair "vpdn:tunnel-type=l2tp" Feb 7 12:22:17: RADIUS: cisco AVPair "vpdn:ip-addresses=10.31.1.9," Feb 7 12:22:17: RADIUS: cisco AVPair "vpdn:l2tp-tunnel-password=ABCDE" Feb 7 12:22:17: AAA/AUTHOR (6239469): Post authorization status = PASS_ADD Feb 7 12:22:17: AAA/AUTHOR/VPDN: Processing AV service=ppp Feb 7 12:22:17: AAA/AUTHOR/VPDN: Processing AV protocol=vpdn Feb 7 12:22:17: AAA/AUTHOR/VPDN: Processing AV tunnel-id=DEFGH Feb 7 12:22:17: AAA/AUTHOR/VPDN: Processing AV tunnel-type=l2tp Feb 7 12:22:17: AAA/AUTHOR/VPDN: Processing AV ip-addresses=10.31.1.9, Feb 7 12:22:17: AAA/AUTHOR/VPDN: Processing AV l2tp-tunnel-password=ABCDE Feb 7 12:22:17: As1 VPDN: Get tunnel info for rtp.cisco.com with LAC DEFGH, IP 10.31.1.9 Feb 7 12:22:17: AAA/AUTHEN: free_user (0x25BA84) user='rtp.cisco.com' ruser='' port='Async1' rem_addr='' authen_type=NONE service=LOGIN priv=0 Feb 7 12:22:17: As1 VPDN: Forward to address 10.31.1.9 Feb 7 12:22:17: As1 VPDN: Forwarding... Feb 7 12:22:17: AAA: parse name=Async1 idb type=10 tty=1 Feb 7 12:22:17: AAA: name=Async1 flags=0x11 type=4 shelf=0 slot=0 adapter=0 port=1 channel=0 Feb 7 12:22:17: AAA/AUTHEN: create_user (0xB7918) user='janedoe@rtp.cisco.com' ruser='' port='Async1' rem_addr='async' authen_type=CHAP service=PPP priv=1 Feb 7 12:22:17: As1 VPDN: Bind interface direction=1 Feb 7 12:22:17: Tnl/Cl 51/1 L2TP: Session FS enabled Feb 7 12:22:17: Tnl/Cl 51/1 L2TP: Session state change from idle to wait-for-tunnel Feb 7 12:22:17: As1 51/1 L2TP: Create session Feb 7 12:22:17: Tnl 51 L2TP: SM State idle Feb 7 12:22:17: Tnl 51 L2TP: O SCCRQ Feb 7 12:22:17: Tnl 51 L2TP: Tunnel state change from idle to wait-ctl-reply Feb 7 12:22:17: Tnl 51 L2TP: SM State wait-ctl-reply Feb 7 12:22:17: As1 VPDN: janedoe@rtp.cisco.com is forwarded Feb 7 12:22:17: Tnl 51 L2TP: I SCCRP from the_LNS !--- Tunnel authentication is successful. Feb 7 12:22:17: Tnl 51 L2TP: Got a challenge from remote peer, the_LNS Feb 7 12:22:17: Tnl 51 L2TP: Got a response from remote peer, the_LNS Feb 7 12:22:17: Tnl 51 L2TP: Tunnel Authentication success Feb 7 12:22:17: Tnl 51 L2TP: Tunnel state change from wait-ctl-reply to established Feb 7 12:22:17: Tnl 51 L2TP: O SCCCN to the_LNS tnlid 38 Feb 7 12:22:17: Tnl 51 L2TP: SM State established Feb 7 12:22:17: As1 51/1 L2TP: O ICRQ to the_LNS 38/0 Feb 7 12:22:17: As1 51/1 L2TP: Session state change from wait-for-tunnel to wait-reply Feb 7 12:22:17: As1 51/1 L2TP: O ICCN to the_LNS 38/1 Feb 7 12:22:17: As1 51/1 L2TP: Session state change from wait-reply to established 2d18h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async1, changed state to up LAC#
LNS#show debug General OS: AAA Authentication debugging is on AAA Authorization debugging is on AAA Accounting debugging is on VPN: L2X protocol events debugging is on L2X protocol errors debugging is on VPDN events debugging is on VPDN errors debugging is on L2TP data sequencing debugging is on VTEMPLATE: Virtual Template debugging is on Radius protocol debugging is on LNS# Feb 7 12:22:16: L2TP: I SCCRQ from DEFGH tnl 51 Feb 7 12:22:16: Tnl 38 L2TP: New tunnel created for remote DEFGH, address 10.31.1.6 Feb 7 12:22:16: Tnl 38 L2TP: Got a challenge in SCCRQ, DEFGH Feb 7 12:22:16: Tnl 38 L2TP: O SCCRP to DEFGH tnlid 51 Feb 7 12:22:16: Tnl 38 L2TP: Tunnel state change from idle to wait-ctl-reply Feb 7 12:22:16: Tnl 38 L2TP: I SCCCN from DEFGH tnl 51 Feb 7 12:22:16: Tnl 38 L2TP: Got a Challenge Response in SCCCN from DEFGH Feb 7 12:22:16: Tnl 38 L2TP: Tunnel Authentication success Feb 7 12:22:16: Tnl 38 L2TP: Tunnel state change from wait-ctl-reply to established Feb 7 12:22:16: Tnl 38 L2TP: SM State established Feb 7 12:22:17: Tnl 38 L2TP: I ICRQ from DEFGH tnl 51 Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: Session FS enabled Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: Session state change from idle to wait-for-tunnel Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: New session created Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: O ICRP to DEFGH 51/1 Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: Session state change from wait-for-tunnel to wait-connect Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: I ICCN from DEFGH tnl 51, cl 1 Feb 7 12:22:17: Tnl/Cl 38/1 L2TP: Session state change from wait-connect to established Feb 7 12:22:17: Vi1 VTEMPLATE: Reuse Vi1, recycle queue size 0 Feb 7 12:22:17: Vi1 VTEMPLATE: Hardware address 00e0.1e68.942c !--- Use Virtual-template 1 for this user. Feb 7 12:22:17: Vi1 VPDN: Virtual interface created for janedoe@rtp.cisco.com Feb 7 12:22:17: Vi1 VPDN: Set to Async interface Feb 7 12:22:17: Vi1 VPDN: Clone from Vtemplate 1 filterPPP=0 blocking Feb 7 12:22:17: Vi1 VTEMPLATE: Has a new cloneblk vtemplate, now it has vtemplate Feb 7 12:22:17: Vi1 VTEMPLATE: ************* CLONE VACCESS1 ***************** Feb 7 12:22:17: Vi1 VTEMPLATE: Clone from Virtual-Template1 interface Virtual-Access1 default ip address no ip address encap ppp ip unnum eth 0 no ip directed-broadcast peer default ip address pool default ppp authen chap end Feb 7 12:22:18: janedoe@rtp.cisco.com 38/1 L2TP: Session with no hwidb 02:23:59: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up Feb 7 12:22:19: Vi1 AAA/AUTHOR/FSM: (0): LCP succeeds trivially Feb 7 12:22:19: Vi1 VPDN: Bind interface direction=2 Feb 7 12:22:19: Vi1 VPDN: PPP LCP accepted rcv CONFACK Feb 7 12:22:19: Vi1 VPDN: PPP LCP accepted sent CONFACK Feb 7 12:22:19: Vi1 L2X: Discarding packet because of no mid/session Feb 7 12:22:19: AAA: parse name=Virtual-Access1 idb type=21 tty=-1 Feb 7 12:22:19: AAA: name=Virtual-Access1 flags=0x11 type=5 shelf=0 slot=0 adapter=0 port=1 channel=0 Feb 7 12:22:19: AAA/AUTHEN: create_user (0x2462A0) user='janedoe@rtp.cisco.com' ruser='' port='Virtual-Access1' rem_addr='' authen_type=CHAP service=PPP priv=1 Feb 7 12:22:19: AAA/AUTHEN/START (2229277178): port='Virtual-Access1' list='' action=LOGIN service=PPP Feb 7 12:22:19: AAA/AUTHEN/START (2229277178): using "default" list Feb 7 12:22:19: AAA/AUTHEN/START (2229277178): Method=RADIUS Feb 7 12:22:19: RADIUS: ustruct sharecount=1 Feb 7 12:22:19: RADIUS: Initial Transmit Virtual-Access1 id 78 171.68.120.194:1645, Access-Request, len 92 Feb 7 12:22:19: Attribute 4 6 0A1F0109 Feb 7 12:22:19: Attribute 5 6 00000001 Feb 7 12:22:19: Attribute 61 6 00000005 Feb 7 12:22:19: Attribute 1 23 6464756E Feb 7 12:22:19: Attribute 3 19 34A66389 Feb 7 12:22:19: Attribute 6 6 00000002 Feb 7 12:22:19: Attribute 7 6 00000001 Feb 7 12:22:19: RADIUS: Received from id 78 171.68.120.194:1645, Access-Accept, len 32 Feb 7 12:22:19: Attribute 6 6 00000002 Feb 7 12:22:19: Attribute 7 6 00000001 Feb 7 12:22:19: AAA/AUTHEN (2229277178): status = PASS Feb 7 12:22:19: Vi1 AAA/AUTHOR/LCP: Authorize LCP Feb 7 12:22:19: AAA/AUTHOR/LCP Vi1 (1756915964): Port='Virtual-Access1' list='' service=NET Feb 7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) user='janedoe@rtp.cisco.com' Feb 7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) send AV service=ppp Feb 7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) send AV protocol=lcp Feb 7 12:22:19: AAA/AUTHOR/LCP (1756915964) found list "default" Feb 7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) Method=RADIUS Feb 7 12:22:19: AAA/AUTHOR (1756915964): Post authorization status = PASS_REPL Feb 7 12:22:19: Vi1 AAA/AUTHOR/LCP: Processing AV service=ppp Feb 7 12:22:19: AAA/ACCT/NET/START User janedoe@rtp.cisco.com, Port Virtual-Access1, List "" Feb 7 12:22:19: AAA/ACCT/NET: Found list "default" Feb 7 12:22:19: Vi1 AAA/AUTHOR/FSM: (0): Can we start IPCP? Feb 7 12:22:19: AAA/AUTHOR/FSM Vi1 (1311872588): Port='Virtual-Access1' list='' service=NET Feb 7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) user='janedoe@rtp.cisco.com' Feb 7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) send AV service=ppp Feb 7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) send AV protocol=ip Feb 7 12:22:19: AAA/AUTHOR/FSM (1311872588) found list "default" Feb 7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) Method=RADIUS Feb 7 12:22:19: AAA/AUTHOR (1311872588): Post authorization status = PASS_REPL Feb 7 12:22:19: Vi1 AAA/AUTHOR/FSM: We can start IPCP Feb 7 12:22:19: RADIUS: ustruct sharecount=2 Feb 7 12:22:19: RADIUS: Initial Transmit Virtual-Access1 id 79 171.68.120.194:1646, Accounting-Request, len 101 Feb 7 12:22:19: Attribute 4 6 0A1F0109 Feb 7 12:22:19: Attribute 5 6 00000001 Feb 7 12:22:19: Attribute 61 6 00000005 Feb 7 12:22:19: Attribute 1 23 6464756E Feb 7 12:22:19: Attribute 40 6 00000001 Feb 7 12:22:19: Attribute 45 6 00000001 Feb 7 12:22:19: Attribute 6 6 00000002 Feb 7 12:22:19: Attribute 44 10 30303030 Feb 7 12:22:19: Attribute 7 6 00000001 Feb 7 12:22:19: Attribute 41 6 00000000 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Start. Her address 0.0.0.0, we want 0.0.0.0 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing AV service=ppp Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Authorization succeeded Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Done. Her address 0.0.0.0, we want 0.0.0.0 Feb 7 12:22:19: RADIUS: Received from id 79 171.68.120.194:1646, Accounting-response, len 20 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Start. Her address 0.0.0.0, we want 10.6.1.1 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing AV service=ppp Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Authorization succeeded Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Done. Her address 0.0.0.0, we want 10.6.1.1 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Start. Her address 10.6.1.1, we want 10.6.1.1 Feb 7 12:22:19: AAA/AUTHOR/IPCP Vi1 (2909132255): Port='Virtual-Access1' list='' service=NET Feb 7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) user='janedoe@rtp.cisco.com' Feb 7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) send AV service=ppp Feb 7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) send AV protocol=ip Feb 7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) send AV addr*10.6.1.1 Feb 7 12:22:19: AAA/AUTHOR/IPCP (2909132255) found list "default" Feb 7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) Method=RADIUS Feb 7 12:22:19: AAA/AUTHOR (2909132255): Post authorization status = PASS_REPL Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Reject 10.6.1.1, using 10.6.1.1 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing AV service=ppp Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing AV addr*10.6.1.1 Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Authorization succeeded Feb 7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Done. Her address 10.6.1.1, we want 10.6.1.1 02:24:00: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up LNS#
LAC#show debug General OS: AAA Authentication debugging is on AAA Authorization debugging is on AAA Accounting debugging is on VPN: L2X protocol events debugging is on L2X protocol errors debugging is on VPDN events debugging is on VPDN errors debugging is on L2TP data sequencing debugging is on VTEMPLATE: Virtual Template debugging is on Radius protocol debugging is on
L'utente viene visualizzato come janedoe@sj.cisco.com (anziché janedoe@rtp.cisco.com), ma il server RADIUS LAC non riconosce questo dominio.
Feb 7 13:26:48: RADIUS: Received from id 86 171.68.118.101:1645, Access-Reject, len 46 Feb 7 13:26:48: Attribute 18 26 41757468 Feb 7 13:26:48: RADIUS: failed to get authorization data: authen status = 2 %VPDN-6-AUTHORFAIL: L2F NAS LAC, AAA authorization failure for As1 user janedoe@sj.cisco.com
Questi debug mostrano una situazione in cui le informazioni del tunnel vengono ricevute, ma con un indirizzo IP non valido per l'altra estremità del tunnel. L'utente tenta di stabilire una sessione, ma non riesce a connettersi.
Feb 7 13:32:45: As1 VPDN: Forward to address 1.1.1.1 Feb 7 13:32:45: As1 VPDN: Forwarding... Feb 7 13:32:45: Tnl 56 L2TP: Tunnel state change from idle to wait-ctl-reply Feb 7 13:32:46: As1 56/1 L2TP: Discarding data packet because tunnel is not open
Questi debug mostrano una situazione in cui le password del tunnel non corrispondono. Sull'LNS, "username the_LNS password ABCDE" viene cambiato in "username the_LNS password garbage" in modo che l'autenticazione tunnel non riesca quando viene tentata.
Feb 7 13:39:35: Tnl 59 L2TP: Tunnel Authentication fails for the_LNS Feb 7 13:39:35: Tnl 59 L2TP: Expected E530DA13B826685C678589250C0BF525 Feb 7 13:39:35: Tnl 59 L2TP: Got E09D90E8A91CF1014C91D56F65BDD052 Feb 7 13:39:35: Tnl 59 L2TP: O StopCCN to the_LNS tnlid 44 Feb 7 13:39:35: Tnl 59 L2TP: Tunnel state change from wait-ctl-reply to shutting-down Feb 7 13:39:35: Tnl 59 L2TP: Shutdown tunnel
LNS#show debug General OS: AAA Authentication debugging is on AAA Authorization debugging is on AAA Accounting debugging is on VPN: L2X protocol events debugging is on L2X protocol errors debugging is on VPDN events debugging is on VPDN errors debugging is on L2TP data sequencing debugging is on VTEMPLATE: Virtual Template debugging is on Radius protocol debugging is on LNS#
Nell'esempio, "accept dialing l2tp virtual-template 1 remote DEFGH" viene modificato in "accept dial in l2tp virtual-template 1 remote junk". L'LNS non riesce più a trovare il tunnel DEFGH (è invece "spazzatura").
Feb 7 13:45:32: L2TP: I SCCRQ from DEFGH tnl 62 Feb 7 13:45:32: L2X: Never heard of DEFGH Feb 7 13:45:32: L2TP: Could not find info block for DEFGH
10.31.1.9 janedoe@rtp.cisco.com 1 - start server=rtp-cherry time=09:23:53 date=02/ 6/1999 task_id=0000001C Sat Feb 6 12:23:53 1999 Client-Id = 10.31.1.9 Client-Port-Id = 1 NAS-Port-Type = Virtual User-Name = "janedoe@rtp.cisco.com" Acct-Status-Type = Start Acct-Authentic = RADIUS User-Service-Type = Framed-User Acct-Session-Id = "0000001C" Framed-Protocol = PPP Acct-Delay-Time = 0 10.31.1.9 janedoe@rtp.cisco.com 1 - stop server=rtp-cherry time=09:24:46 date=02/ 6/1999 task_id=0000001C Sat Feb 6 12:24:46 1999 Client-Id = 10.31.1.9 Client-Port-Id = 1 NAS-Port-Type = Virtual User-Name = "janedoe@rtp.cisco.com" Acct-Status-Type = Stop Acct-Authentic = RADIUS User-Service-Type = Framed-User Acct-Session-Id = "0000001C" Framed-Protocol = PPP Framed-Address = 10.6.1.1 Acct-Terminate-Cause = Lost-Carrier Acct-Input-Octets = 678 Acct-Output-Octets = 176 Acct-Input-Packets = 17 Acct-Output-Packets = 10 Acct-Session-Time = 53 Acct-Delay-Time = 0
Revisione | Data di pubblicazione | Commenti |
---|---|---|
1.0 |
10-Dec-2001 |
Versione iniziale |