Cisco Secure PIX-firewall-softwarereleases 6.0 en latere ondersteuningsverbindingen met Cisco VPN-client 3.x en 4.x. Deze voorbeeldconfiguratie toont twee verschillende versies van VPN-clients die verkeer met de PIX verbinden en versleutelen als het tunneleindpunt. In deze configuratie wordt een pool van adressen ingesteld die voor IP security (IPSec) moet worden toegewezen.
Deze voorbeeldconfiguratie is gebaseerd op de veronderstelling dat PIX al werkt met geschikte statcs, conduits of toegangslijsten. Dit document is niet bedoeld om deze basisconcepten te illustreren, maar om connectiviteit op de PIX van een Cisco VPN-client te tonen.
De informatie in dit document is gebaseerd op de volgende software- en hardware-versies:
PIX-softwarerelease 6.2(1)S
N.B.: Deze instelling is getest op PIX-softwarerelease 6.2(1), maar moet werken aan eerdere releases terug naar 6.0(1) en latere releases.
Cisco VPN-clientversie 3.6 Rel
N.B.: Deze instelling is getest op VPN-client v4.0 Rel, maar dient te werken aan eerdere releases terug naar 3.0 en tot de huidige release.
De informatie in dit document is gebaseerd op de apparaten in een specifieke laboratoriumomgeving. Alle apparaten die in dit document worden beschreven, hadden een opgeschoonde (standaard)configuratie. Als uw netwerk live is, moet u de potentiële impact van elke opdracht begrijpen.
Deze sectie bevat informatie over het configureren van de functies die in dit document worden beschreven.
Het netwerk in dit document is als volgt opgebouwd:
N.B.: Gebruik het Opdrachtupgereedschap (alleen geregistreerde klanten) om meer informatie te vinden over de opdrachten die in dit document worden gebruikt.
PIX |
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PIX Version 6.2(1) nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password OnTrBUG1Tp0edmkr encrypted passwd 2KFQnbNIdI.2KYOU encrypted hostname goss-d3-pix515b domain-name rtp.cisco.com fixup protocol ftp 21 fixup protocol http 80 fixup protocol h323 1720 fixup protocol rsh 514 fixup protocol smtp 25 fixup protocol sqlnet 1521 fixup protocol sip 5060 fixup protocol skinny 2000 names ! !--- Access list to avoid Network Address Translation (NAT) !--- on the IPSec packets. access-list 101 permit ip 10.1.1.0 255.255.255.0 10.1.2.0 255.255.255.0 pager lines 24 interface ethernet0 auto interface ethernet1 auto mtu outside 1500 mtu inside 1500 ! !--- IP addresses on the interfaces ip address outside 172.18.124.216 255.255.255.0 ip address inside 10.1.1.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm ip local pool ippool 10.1.2.1-10.1.2.254 no failover failover timeout 0:00:00 failover poll 15 failover ip address outside 0.0.0.0 failover ip address inside 0.0.0.0 pdm history enable arp timeout 14400 ! !--- Binding ACL 101 to the NAT statement to avoid NAT !--- on the IPSec packets. nat (inside) 0 access-list 101 ! !--- Default route to the Internet. route outside 0.0.0.0 0.0.0.0 172.18.124.1 1 timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h323 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout uauth 0:05:00 absolute aaa-server TACACS+ protocol tacacs+ aaa-server RADIUS protocol radius http server enable http 1.2.3.5 255.255.255.255 inside no snmp-server location no snmp-server contact snmp-server community public no snmp-server enable traps floodguard enable ! !--- The sysopt command avoids conduit !--- on the IPSec encrypted traffic. sysopt connection permit-ipsec no sysopt route dnat ! !--- Phase 2 encryption type crypto ipsec transform-set myset esp-des esp-md5-hmac crypto dynamic-map dynmap 10 set transform-set myset crypto map mymap 10 ipsec-isakmp dynamic dynmap ! !--- Binding the IPSec engine on the outside interface. crypto map mymap interface outside ! !--- Enabling Internet Security Association and !--- Key Management Protocol (ISAKMP) key exchange. isakmp enable outside isakmp identity address ! !--- ISAKMP policy for VPN Client running 3.x or 4.x code. isakmp policy 10 authentication pre-share isakmp policy 10 encryption des isakmp policy 10 hash md5 isakmp policy 10 group 2 isakmp policy 10 lifetime 86400 ! !--- IPSec group configuration for either VPN Client. vpngroup vpn3000 address-pool ippool vpngroup vpn3000 dns-server 10.1.1.2 vpngroup vpn3000 wins-server 10.1.1.2 vpngroup vpn3000 default-domain cisco.com vpngroup vpn3000 idle-time 1800 vpngroup vpn3000 password ******** !--- To allow simultaneous access to the !--- internal network and to the Internet. vpngroup vpn3000 split-tunnel 101 telnet timeout 5 ssh timeout 5 terminal width 80 Cryptochecksum:94da63fc0bb8ce167407b3ea21c6642c : end [OK] |
Voltooi deze stappen om een nieuwe verbinding te maken met de VPN-client.
Start de VPN-client en klik vervolgens op New om een nieuwe verbinding te maken.
Geef configuratieinformatie op voor de nieuwe verbinding.
Geef in het veld Toegang tot verbinding een naam aan de ingang toe.
Voer in het veld Host het IP-adres van de openbare interface van de PIX in.
Kies het tabblad Verificatie en voer vervolgens de groep en het wachtwoord in (tweemaal - voor bevestiging).
Klik na voltooiing van het programma op Opslaan.
Klik op Connect om verbinding te maken met de PIX.
Gebruik dit gedeelte om te bevestigen dat de configuratie correct werkt.
Het Uitvoer Tolk (uitsluitend geregistreerde klanten) (OIT) ondersteunt bepaalde show opdrachten. Gebruik de OIT om een analyse van tonen opdrachtoutput te bekijken.
toon crypto isakmp sa-Bekijk alle huidige IKE (Internet Key Exchange) veiligheidsassociaties (SAs) bij een peer.
Laat crypto ipsec sa-View de instellingen zien die door huidige SAs worden gebruikt.
Gebruik dit gedeelte om de configuratie van het probleem op te lossen.
Opmerking: Raadpleeg Belangrijke informatie over debug Commands voordat u debug-opdrachten gebruikt.
debug van crypto ipsec: gebruik om de IPSec-onderhandelingen van fase 2 te zien.
debug van crypto isakmp - gebruik om de ISAKMP-onderhandelingen van fase 1 te zien.
debug crypto motor - toont het verkeer dat wordt versleuteld.
Dit is een voorbeeld van een goede debug die met de Cisco VPN 3.0.x-client is gegenereerd:
goss-d3-pix515b#debug crypto isakmp goss-d3-pix515b#debug crypto ipsec goss-d3-pix515b#debug crypto engine goss-d3-pix515b#show debug debug crypto ipsec 1 debug crypto isakmp 1 debug crypto engine debug fover status tx Off rx Off open Off cable Off txdmp Off rxdmp Off ifc Off rxip Off txip Off get Off put Off verify Off switch Off fail Off fmsg Off goss-d3-pix515b# goss-d3-pix515b# crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 OAK_AG exchange ISAKMP (0): processing SA payload. message ID = 0 ISAKMP (0): Checking ISAKMP transform 1 against priority 10 policy ISAKMP: encryption 3DES-CBC ISAKMP: hash SHA ISAKMP: default group 2 ISAKMP: extended auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 2 against priority 10 policy ISAKMP: encryption 3DES-CBC ISAKMP: hash MD5 ISAKMP: default group 2 ISAKMP: extended auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 3 against priority 10 policy ISAKMP: encryption 3DES-CBC ISAKMP: hash SHA ISAKMP: default group 2 ISAKMP: auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 4 against priority 10 policy ISAKMP: encryption 3DES-CBC ISAKMP: hash MD5 ISAKMP: default group 2 ISAKMP: auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 5 against priority 10 policy ISAKMP: encryption DES-CBC ISAKMP: hash SHA ISAKMP: default group 2 ISAKMP: extended auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 6 against priority 10 policy ISAKMP: encryption DES-CBC ISAKMP: hash MD5 ISAKMP: default group 2 ISAKMP: extended auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 7 against priority 10 policy ISAKMP: encryption DES-CBC ISAKMP: hash SHA ISAKMP: default group 2 ISAKMP: auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are not acceptable. Next payload is 3 ISAKMP (0): Checking ISAKMP transform 8 against priority 10 policy ISAKMP: encryption DES-CBC ISAKMP: hash MD5 ISAKMP: default group 2 ISAKMP: auth pre-share ISAKMP: life type in seconds ISAKMP: life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are acceptable. Next payload is 0 ISAKMP (0): processing KE payload. message ID = 0 ISAKMP (0): processing NONCE payload. message ID = 0 ISAKMP (0): processing ID payload. message ID = 0 ISAKMP (0): processing vendor id payload ISAKMP (0): processing vendor id payload ISAKMP (0): remote peer supports dead peer detection ISAKMP (0): processing vendor id payload ISAKMP (0): speaking to a Unity client ISAKMP: Created a peer node for 172.18.124.96 ISAKMP (0): ID payload next-payload : 10 type : 1 protocol : 17 port : 500 length : 8 ISAKMP (0): Total payload length: 12 return status is IKMP_NO_ERROR crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 OAK_AG exchange ISAKMP (0): processing HASH payload. message ID = 0 ISAKMP (0): processing NOTIFY payload 24578 protocol 1 spi 0, message ID = 0 ISAKMP (0): processing notify INITIAL_CONTACT IPSEC(key_engine): got a queue event... IPSEC(key_engine_delete_sas): rec'd delete notify from ISAKMP IPSEC(key_engine_delete_sas): delete all SAs shared with 172.18.124.96 ISAKMP (0): SA has been authenticated return status is IKMP_NO_ERROR crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 ISAKMP_TRANSACTION exchange ISAKMP (0:0): processing transaction payload from 172.18.124.96. message ID = 0 ISAKMP: Config payload CFG_REQUEST ISAKMP (0:0): checking request: ISAKMP: attribute IP4_ADDRESS (1) ISAKMP: attribute IP4_NETMASK (2) ISAKMP: attribute IP4_DNS (3) ISAKMP: attribute IP4_NBNS (4) ISAKMP: attribute ADDRESS_EXPIRY (5) Unsupported Attr: 5 ISAKMP: attribute APPLICATION_VERSION (7) Unsupported Attr: 7 ISAKMP: attribute UNKNOWN (28672) Unsupported Attr: 28672 ISAKMP: attribute UNKNOWN (28673) Unsupported Attr: 28673 ISAKMP: attribute UNKNOWN (28674) ISAKMP: attribute UNKNOWN (28676) ISAKMP: attribute UNKNOWN (28679) Unsupported Attr: 28679 ISAKMP (0:0): responding to peer config from 172.18.124.96. ID = 525416177 return status is IKMP_NO_ERROR crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 OAK_QM exchange oakley_process_quick_mode: OAK_QM_IDLE ISAKMP (0): processing SA payload. message ID = 805890102 ISAKMP : Checking IPSec proposal 1 ISAKMP: transform 1, ESP_3DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-MD5 ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b IPSEC(validate_proposal): transform proposal (prot 3, trans 3, hmac_alg 1) not supported ISAKMP (0): atts not acceptable. Next payload is 0 ISAKMP (0): skipping next ANDed proposal (1) ISAKMP : Checking IPSec proposal 2 ISAKMP: transform 1, ESP_3DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-SHA ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b IPSEC(validate_proposal): transform proposal (prot 3, trans 3, hmac_alg 2) not supported ISAKMP (0): atts not acceptable. Next payload is 0 ISAKMP (0): skipping next ANDed proposal (2) ISAKMP : Checking IPSec proposal 3 ISAKMP: transform 1, ESP_3DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-MD5 ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b IPSEC(validate_proposal): transform proposal (prot 3, trans 3, hmac_alg 1) not supported ISAKMP (0): atts not acceptable. Next payload is 0 ISAKMP : Checking IPSec proposal 4 ISAKMP: transform 1, ESP_3DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-SHA ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b IPSEC(validate_proposal): transform proposal (prot 3, trans 3, hmac_alg 2) not supported ISAKMP (0): atts not acceptable. Next payload is 0 ISAKMP : Checking IPSec proposal 5 ISAKMP: transform 1, ESP_DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-MD5 ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are acceptable. ISAKMP (0): bad SPI size of 2 octets! ISAKMP : Checking IPSec proposal 6 ISAKMP: transform 1, ESP_DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-SHA ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b IPSEC(validate_proposal): transform proposal (prot 3, trans 2, hmac_alg 2) not supported ISAKMP (0): atts not acceptable. Next payload is 0 ISAKMP (0): skipping next ANDed proposal (6) ISAKMP : Checking IPSec proposal 7 ISAKMP: transform 1, ESP_DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-MD5 ISAKMP: encaps is 1 ISAKMP: SA life type in seconds ISAKMP: SA life duration (VPI) of 0x0 0x20 0xc4 0x9b ISAKMP (0): atts are acceptable. IPSEC(validate_proposal_request): proposal part #1, (key eng. msg.) dest= 172.18.124.216, src= 172.18.124.96, dest_proxy= 172.18.124.216/255.255.255.255/0/0 (type=1), src_proxy= 10.1.2.1/255.255.255.255/0/0 (type=1), protocol= ESP, transform= esp-des esp-md5-hmac , lifedur= 0s and 0kb, spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4 ISAKMP (0): processing NONCE payload. message ID = 805890102 ISAKMP (0): processing ID payload. message ID = 805890102 ISAKMP (0): ID_IPV4_ADDR src 10.1.2.1 prot 0 port 0 ISAKMP (0): processing ID payload. message ID = 805890102 ISAKMP (0): ID_IPV4_ADDR dst 172.18.124.216 prot 0 port 0 IPSEC(key_engine): got a queue event... IPSEC(spi_response): getting spi 0x13b00d31(330304817) for SA from 172.18.124.96 to 172.18.124.216 for prot 3 return status is IKMP_NO_ERROR crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 OAK_QM exchange oakley_process_quick_mode: OAK_QM_IDLE ISAKMP (0): processing SA payload. message ID = 935083707 ISAKMP : Checking IPSec proposal 1 ISAKMP: transform 1, ESP_3DES ISAKMP: attributes in transform: ISAKMP: authenticator is HMAC-MD5 crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 OAK_QM exchange oakley_process_quick_mode: OAK_QM_AUTH_AWAITmap_alloc_entry: allocating entry 1 map_alloc_entry: allocating entry 2 ISAKMP (0): Creating IPSec SAs inbound SA from 172.18.124.96 to 172.18.124.216 (proxy 10.1.2.1 to 172.18.124.216) has spi 330304817 and conn_id 1 and flags 4 lifetime of 2147483 seconds outbound SA from 172.18.124.216 to 172.18.124.96 (proxy 172.18.124.216 to 10.1.2.1) has spi 2130279708 and conn_id 2 and flags 4 lifetime of 2147483 secondsIPSEC(key_engine): got a queue event... IPSEC(initialize_sas): , (key eng. msg.) dest= 172.18.124.216, src= 172.18.124.96, dest_proxy= 172.18.124.216/0.0.0.0/0/0 (type=1), src_proxy= 10.1.2.1/0.0.0.0/0/0 (type=1), protocol= ESP, transform= esp-des esp-md5-hmac , lifedur= 2147483s and 0kb, spi= 0x13b00d31(330304817), conn_id= 1, keysize= 0, flags= 0x4 IPSEC(initialize_sas): , (key eng. msg.) src= 172.18.124.216, dest= 172.18.124.96, src_proxy= 172.18.124.216/0.0.0.0/0/0 (type=1), dest_proxy= 10.1.2.1/0.0.0.0/0/0 (type=1), protocol= ESP, transform= esp-des esp-md5-hmac , lifedur= 2147483s and 0kb, spi= 0x7ef97d1c(2130279708), conn_id= 2, keysize= 0, flags= 0x4 return status is IKMP_NO_ERROR crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 OAK_QM exchange oakley_process_quick_mode: OAK_QM_AUTH_AWAITmap_alloc_entry: allocating entry 3 map_alloc_entry: allocating entry 4 ISAKMP (0): Creating IPSec SAs inbound SA from 172.18.124.96 to 172.18.124.216 (proxy 10.1.2.1 to 0.0.0.0) has spi 4139858833 and conn_id 3 and flags 4 lifetime of 2147483 seconds outbound SA from 172.18.124.216 to 172.18.124.96 ( proxy 0.0.0.0 to 10.1.2.1) has spi 1487433401 and conn_id 4 and flags 4 lifetime of 2147483 seconds IPSEC(key_engine): got a queue event... IPSEC(initialize_sas): , (key eng. msg.) dest= 172.18.124.216, src= 172.18.124.96, dest_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), src_proxy= 10.1.2.1/0.0.0.0/0/0 (type=1), protocol= ESP, transform= esp-des esp-md5-hmac , lifedur= 2147483s and 0kb, spi= 0xf6IPSEC(initialize_sas): , (key eng. msg.) src= 172.18.124.216, dest= 172.18.124.96, src_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), dest_proxy= 10.1.2.1/0.0.0.0/0/0 (type=1), protocol= ESP, transform= esp-des esp-md5-hmac , lifedur= 2147483s and 0kb, spi= 0x58a86eb9(1487433401), conn_id= 4, keysize= 0, flags= 0x4 return status is IKMP_NO_ERROR crypto_isakmp_process_block: src 172.18.124.96, dest 172.18.124.216 ISAKMP (0): processing NOTIFY payload 36136 protocol 1 spi 0, message ID = 1617869510 ISAMKP (0): received DPD_R_U_THERE from peer 172.18.124.96 ISAKMP (0): sending NOTIFY message 36137 protocol 1 return status is IKMP_NO_ERR_NO_TRANS goss-d3-pix515b# goss-d3-pix515b# goss-d3-pix515b#no debug crypto isakmp goss-d3-pix515b#no debug crypto ipsec goss-d3-pix515b#no debug crypto engine goss-d3-pix515b#
Revisie | Publicatiedatum | Opmerkingen |
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1.0 |
13-Oct-2008 |
Eerste vrijgave |