pix 501 & vpn

[Jumpa]

ciao a tutti,
sto cercando di realizzare la seguente soluzione,
un firewall pix 501 che accetta connessioni vpn.
riesco a configurare il server pptp sul firewal senza problemi

internamente ho la classe 192.168.254
esternamente la classe 192.168.253

mi collego sulla porta esterna ip 192.168.253.1 da un client windows xp ( tramite connessioni remote ms ) e come per magia si collega in tre nanosecondi netti.
bene detto cio dove è il problema.

dall'interno riesco a pingare l'ip che è stato assegnato al mio client vpn
dal client vpn non riesco ad accedere alla rete interna!! manco un ping me passa!!

posto la configurazione del mio pix!



pms# show run
: Saved
:
PIX Version 6.3(5)
interface ethernet0 auto
interface ether
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password ddyLM7.E7exsLlQh encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pms
domain-name pms.fcworkgroup.net
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 outside_access_in permit udp any any
access-list outside_access_in permit ip any any
access-list outside_access_in permit icmp any any
access-list outside_access_in permit tcp any any
access-list inside_access_in permit udp any any
access-list inside_access_in permit ip any any
access-list inside_access_in permit icmp any any
access-list inside_access_in permit tcp any any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 192.168.253.1 255.255.255.0
ip address inside 192.168.254.145 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool fc254 192.168.254.146-192.168.254.149
pdm location 192.168.254.0 255.255.255.255 inside
pdm location 192.168.254.115 255.255.255.255 inside
pdm history enable
arp timeout 14400
global (outside) 10 interface
nat (inside) 10 0.0.0.0 0.0.0.0 0 0
access-group outside_access_in in interface outside
access-group inside_access_in in interface inside
route outside 0.0.0.0 0.0.0.0 192.168.253.254 1
timeout xlate 3:00:00
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 192.168.254.0 255.255.255.255 inside
http 192.168.254.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
sysopt connection permit-pptp
sysopt connection permit-l2tp
telnet timeout 5
ssh timeout 5
console timeout 0
vpdn group fc accept dialin pptp
vpdn group fc ppp authentication pap
vpdn group fc ppp authentication chap
vpdn group fc ppp authentication mschap
vpdn group fc ppp encryption mppe auto
vpdn group fc client configuration address local fc254
vpdn group fc client configuration dns 192.168.254.1
vpdn group fc client configuration wins 192.168.254.1
vpdn group fc pptp echo 60
vpdn group fc client authentication local
vpdn username fcopevpn password *********
vpdn enable outside
vpdn enable inside
terminal width 80
Cryptochecksum:87b35ca0e1096039f184d7bf17113f81



grazie a tutti Jumpa

[emanuele.ciani]

Il tuo problema è la NAT

I pacchetti quando passano dal client alla tua rete interna raggiungono l'obbiettivo ma quando tornano indietro trovano il Nat ed escono verso internet

qundi nat (0) access-list nonat

access-list nonat permit ip reteinterna reteesterna