VPN Pix To Pix

[vairo]

Ho 2 sedi con 2 pix 501, la spia VPN si accende, ma non riesco a trafficare sul tunnel creato, sapete darmi qualche dritta in più?
Ecco le configurazioni:

-----------------Pix Ufficio------------------


interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
hostname pixufficio
domain-name ciscopix.com
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list 101 permit ip 192.168.1.0 255.255.255.0 192.168.100.0
255.255.255.0
access-list ipsec permit ip 192.168.1.0 255.255.255.0 192.168.100.0
255.255.255.0
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 82.x.x.50 255.255.255.248
ip address inside 192.168.1.150 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list 101
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 82.x.x.54 1
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set myset esp-3des
crypto ipsec transform-set myset esp-3des
crypto map mymap 21 match address ipsec
crypto map mymap 21 set peer 88.x.x.20
crypto map mymap 21 set transform-set myset
crypto map mymap interface outside
isakmp enable outside
isakmp key password address 88.x.x.20 netmask 255.255.255.255 no-xauth
isakmp policy 21 authentication pre-share
isakmp policy 21 encryption 3des
isakmp policy 21 hash sha
isakmp policy 21 group 1
isakmp policy 21 lifetime 1000
telnet 0.0.0.0 0.0.0.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
access-list acl_out permit icmp any any echo
access-list acl_out permit icmp any any echo-reply
access-list acl_out permit icmp any any time-exceeded
access-list acl_out permit icmp any any unreachable
access-list acl_in permit icmp any any echo
access-list acl_in permit icmp any any echo-reply
access-list acl_in permit icmp any any time-exceeded
access-list acl_in permit icmp any any unreachable


--------------------------------------------------


-----------------Pix Fonderia----------------


interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
hostname pixfonderia
domain-name ciscopix.com
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list 101 permit ip 192.168.100.0 255.255.255.0 192.168.1.0
255.255.255.0
access-list ipsec permit ip 192.168.100.0 255.255.255.0 192.168.1.0
255.255.255.0
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 88.x.x.20 255.255.255.248
ip address inside 192.168.100.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list 101
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 88.x.x.17 1
http server enable
http 192.168.100.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set myset esp-3des
crypto map mymap 21 match address ipsec
crypto map mymap 21 set peer 82.x.x.50
crypto map mymap 21 set transform-set myset
crypto map mymap interface outside
isakmp enable outside
isakmp key password address 82.x.x.50 netmask 255.255.255.255 no-xauth
isakmp policy 21 authentication pre-share
isakmp policy 21 encryption 3des
isakmp policy 21 hash sha
isakmp policy 21 group 1
isakmp policy 21 lifetime 1000
telnet 0.0.0.0 0.0.0.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
access-list acl_out permit icmp any any echo
access-list acl_out permit icmp any any echo-reply
access-list acl_out permit icmp any any time-exceeded
access-list acl_out permit icmp any any unreachable
access-list acl_in permit icmp any any echo
access-list acl_in permit icmp any any echo-reply
access-list acl_in permit icmp any any time-exceeded
access-list acl_in permit icmp any any unreachable


---------------------------------------------------

[MaiO]

la spia VPN si accende

Quale sarebbe la spia VPN???

Visto che non hai descritto dei sintomi particolari, ne hai fatto vedere parti del debug che potrebbero farci capire dove sta il problema. Ti consiglio di utilizzare la procedura guidata dal PDM. Con pochi parametri riesci a conigurare una site to site che funzioni tranquillamente.

Ciao

[vairo]

Con il VPN Wizard avevo la stessa situazione (è come se i 2 pix si parlassero, ma non permettono ai dati di passare dall'esterno all'interno)

Quale sarebbe la spia VPN???

Il led VPN TUNNEL

[MaiO]

Quale sarebbe la spia VPN???

Il led VPN TUNNEL

Buffo non l'avevo mai notato. Prova a ripulire tutto innerente alle VPN, le acl, isakmp, policy ecc. Esegui il VPN Wizard su entrambi i PIX, e posta la conf.
Provato a fare il debug per vedere a che punto "si blocca" la creazione del tunnel?

Dai un occhiata pure su questi link:
http://www.cisco.com/en/US/products/hw/ ... bd85.shtml
http://www.cisco.com/en/US/products/hw/ ... 4761.shtml

Facci sapere

Ciao

[vairo]

Seguita alla lettera la configurazione di VPN standard da console


pixfonderia# show crypto ipsec sa

-------------------------------------------------------------------------
interface: outside
Crypto map tag: transam, local addr. 88.y.y.20

local ident (addr/mask/prot/port): (192.168.100.0/255.255.255.0/0/0)
remote ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
current_peer: 82.x.x.50:500
PERMIT, flags={origin_is_acl,}
#pkts encaps: 1058, #pkts encrypt: 1058, #pkts digest 1058
#pkts decaps: 0, #pkts decrypt: 0, #pkts verify 0
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0, #pkts decompress failed: 0
#send errors 1, #recv errors 0

local crypto endpt.: 88.y.y.20, remote crypto endpt.: 82.x.x.50
path mtu 1500, ipsec overhead 56, media mtu 1500
current outbound spi: 431886d9

inbound esp sas:
spi: 0x53f9da18(1408883224)
transform: esp-des esp-md5-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 1, crypto map: transam
sa timing: remaining key lifetime (k/sec): (4608000/27682)
IV size: 8 bytes
replay detection support: Y


inbound ah sas:


inbound pcp sas:


outbound esp sas:
spi: 0x431886d9(1125680857)
transform: esp-des esp-md5-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2, crypto map: transam
sa timing: remaining key lifetime (k/sec): (4607938/27682)
IV size: 8 bytes
replay detection support: Y


outbound ah sas:


outbound pcp sas:

----------------------------------------------------------------------

pixfonderia# show crypto isakmp sa
Total : 1
Embryonic : 0
dst src state pending created
82.x.x.50 88.y.y.20 QM_IDLE 0 0

[Wizard]

Allora, il problema è che l'isakmp va su ma non l'ipsec?
Se è così controlla la crypto acl e il nat0

[vairo]

controlla la crypto acl e il nat0

Per favore, potresti essere un po' più preciso sui comandi, sono abbastanza newbie
grazie

[Wizard]

Per non rischiare di dirti stupidate posta le attuali configurazioni che vediamo!
Ora cosa è che non va nella VPN?
Se fai uno "sh crypto isakmp sa" mentre fai un ping dalla altra parte della von che ti dice?
Cmq dalle "vecchie" configurazione sembra che la cryprto acl ci sia e vada bene

[vairo]

Ecco qui le configurazioni, te ne mando solo una, perchè l'altra ha semplicemente gli ip diversi, per il resto è come un copia-incolla, ho digitato e verificato i comandi uno, a uno visti i problemi che ho avuto in precedenza

pixfonderia(config)# show conf
: Saved
: Written by enable_15 at 03:02:07.482 UTC Tue Nov 28 2006
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pixfonderia
domain-name ciscopix.com
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list 101 permit ip 192.168.100.0 255.255.255.0 192.168.1.0 255.255.255.0
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 88.y.y.20 255.255.255.248
ip address inside 192.168.100.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 88.z.z.84 255.255.255.255 inside
pdm location 82.x.x.50 255.255.255.255 outside
pdm location 88.z.z.84 255.255.255.255 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list 101
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 88.y.y.17 1
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
http server enable
http 192.168.100.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set chevelle esp-des esp-md5-hmac
crypto map transam 1 ipsec-isakmp
crypto map transam 1 match address 101
crypto map transam 1 set peer 82.x.x.50
crypto map transam 1 set transform-set chevelle
crypto map transam interface outside
isakmp enable outside
isakmp key password address 82.x.x.50 netmask 255.255.255.255
isakmp identity address
isakmp policy 1 authentication pre-share
isakmp policy 1 encryption des
isakmp policy 1 hash md5
isakmp policy 1 group 1
isakmp policy 1 lifetime 1000
telnet 82.x.x.50 255.255.255.255 outside
telnet 88.z.z.84 255.255.255.255 outside
telnet 192.168.100.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd address 192.168.100.2-192.168.100.33 inside
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
terminal width 80
Cryptochecksum:17f3cfdca0d4ee273e3e305dd872bee3

[Wizard]

Purtroppo non ho ancora capito dove si blocca la vpn cmq analizziamo per punti:

- La parte ISAKmp sembra configurata bene
- Il NAT0 è configurato e va bene (ACL 101)
- La crypto è configurata (ACL 101)

Io non ho mai configurato il nat0 e la crypto sulla stessa acl anche se effettivamente devono essere uguali.

Prova a creare una acl diversa per la crypto:

crypto map transam 1 match address 150
access-list 150 permit ip 192.168.100.0 255.255.255.0 192.168.1.0 255.255.255.0

Chiaramente questa operazione va fatta su entrambi i PIX ribaltando le classi ip.

Dopo avere fatto questa modifica verifica come stia l'isakmp digitando "sh cry isakmp sa"

[vairo]

Io quindi creo

crypto map transam 1 match address 150
access-list 150 permit ip 192.168.100.0 255.255.255.0 192.168.1.0 255.255.255.0

e ribalto per l'altro pix

Rimuovo anche le vecchie 101

access-list 101 permit ip 192.168.100.0 255.255.255.0 192.168.1.0 255.255.255.0
crypto map transam 1 match address 101

ovviamente per tutti e 2 i pix

[Wizard]

Io quindi creo

crypto map transam 1 match address 150
access-list 150 permit ip 192.168.100.0 255.255.255.0 192.168.1.0 255.255.255.0

e ribalto per l'altro pix

SI

Rimuovo anche le vecchie 101

access-list 101 permit ip 192.168.100.0 255.255.255.0 192.168.1.0 255.255.255.0
crypto map transam 1 match address 101
ovviamente per tutti e 2 i pix

NO, TIENI LA ACL 101 PER IL DE-NAT

Per sicurezza non salvare prima di avere provato la acl, se dovesse andare storto qualche cosa basterà riavviare i pix e tutto tornerà come p ora.

[vairo]

Questo può voler dire qualcosa????

pixufficio# sh crypto isakmp sa
Total : 1
Embryonic : 0
dst src state pending created
88.x.x.20 82.y.y.50 QM_IDLE 0 1

[vairo]

Altre note di DEBUG, sembrerebbe tutto ok senza cambiare una virgola, per di più dalla console di un pix riesco a pingare l'interfaccia interna dell'altro.

ISADB: reaper checking SA 0x9
ISAKMP: rekeying phase 1 SA, src 82.y.y.50
crypto_isakmp_process_block:src:88.x.x.20, dest:82.y.y.50 spt:500 dpt:500
OAK_MM exchange
ISAKMP (0): processing SA payload. message ID = 0

ISAKMP (0): Checking ISAKMP transform 1 against priority 1 policy
ISAKMP: encryption DES-CBC
ISAKMP: hash MD5
ISAKMP: default group 1
ISAKMP: auth pre-share
ISAKMP: life type in seconds
ISAKMP: life duration (basic) of 1000
ISAKMP (0): atts are acceptable. Next payload is 0
ISAKMP (0): SA is doing pre-shared key authentication using id type ID_IPV4_ADDR
return status is IKMP_NO_ERROR
crypto_isakmp_process_block:src:88.x.x.20, dest:82.y.y.50 spt:500 dpt:500
OAK_MM exchange
ISAKMP (0): processing KE payload. message ID = 0

ISAKMP (0): processing NONCE payload. message ID = 0

ISAKMP (0): processing vendor id payload

ISAKMP (0): received xauth v6 vendor id

ISAKMP (0): processing vendor id payload

ISAKMP (0): remote peer supports dead peer detection

ISAKMP (0): processing vendor id payload

ISAKMP (0): processing vendor id payload

ISAKMP (0): speaking to another IOS box!

ISAKMP (0): ID payload
next-payload : 8
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:88.x.x.20, dest:82.y.y.50 spt:500 dpt:500
OAK_MM exchange
ISAKMP (0): processing ID payload. message ID = 0
ISAKMP (0): processing HASH payload. message ID = 0
ISAKMP (0): SA has been authenticated

return status is IKMP_NO_ERROR
VPN Peer: ISAKMP: Peer ip:88.x.x.20/500 Ref cnt incremented to:4 Total VPN Pe
ers:1
crypto_isakmp_process_block:src:88.x.x.20, dest:82.y.y.50 spt:500 dpt:500
ISAKMP (0): processing DELETE payload. message ID = 4207403432, spi size = 16
ISAKMP (0): deleting SA: src 82.y.y.50, dst 88.y.y.20
return status is IKMP_NO_ERR_NO_TRANS
ISADB: reaper checking SA 0x9feaec, conn_id = 0 DELETE IT!

VPN Peer: ISAKMP: Peer ip:88.x.x.20/500 Ref cnt decremented to:3 Total VPN Pe
ers:1
ISADB: reaper checking SA 0xaa5974, conn_id = 0

[Wizard]

Allora, l'isakmp è su (QM_IDLE).
Su entrambi i pix digita il copmando "management-access inside", ti permetterà ti pingare la interfaccia interna dei pix dalle 2 reti in vpn.
Ora quindi il problema è che non si pingano le due reti?
Hai l' ip audit configurato su quei 2 pix?
Entrambe le reti hanno i 2 pix come gateway?