Problemi configurazione PIX 501

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Moderatore: Federico.Lagni

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nightfly83
n00b
Messaggi: 21
Iscritto il: sab 09 mag , 2009 3:58 pm

Ho recentemente acquistato un PIX 501 (di seconda mano) e dopo aver cancellato il file di configurazione ho deciso di settarlo secondo le mie esigenze. Purtroppo però dall'interfaccia esterna non riesco a pingare il router, mentre dall'interfaccia interna pingo tranquillamente gli host della LAN. Di seguito riporto la configurazione del firewall in questione:
NightFirewall# SH run
: Saved
:
PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password HKWuIP8.hZhxh5Wv encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname NightFirewall
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 inbound permit tcp any host 192.168.2.2 eq 4662
access-list inbound permit udp any host 192.168.2.2 eq 4666
access-list inbound permit tcp any host 192.168.2.2 eq 4652
access-list inbound permit udp any host 192.168.2.2 eq 4652
access-list inbound permit tcp any host 192.168.2.2 eq 6881
access-list inbound permit tcp any host 192.168.2.2 eq 6882
access-list inbound permit icmp any any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 192.168.2.2 255.255.255.252
ip address inside 172.16.3.1 255.255.255.252
ip audit info action alarm
ip audit attack action alarm
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 172.16.3.0 255.255.255.252 0 0
static (inside,outside) 192.168.2.2 172.16.3.1 netmask 255.255.255.255 0 0
access-group inbound in interface outside
conduit permit icmp any any
conduit permit tcp any any
route outside 0.0.0.0 0.0.0.0 192.168.2.1 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 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 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
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum:50d3d1ac5ee3d6579a86fd75faf3b204
: end

La topologia è la seguente: Router - Int esterna firewall - Int interna firewall - LAN

Qualcuno sa dirmi dove possa essere il prolema? Grazie in anticipo.
Dott. in Ingegneria delle Telecomunicazioni
CCNA R&S
CCNA Security
CompTIA Network+
CompTIA Security+
EUCIP Core
EUCIP IT Administrator Fundamentals
MCP Windows Server 2012
MCSA Windows Server 2008
MCITP
MCTS
nightfly83
n00b
Messaggi: 21
Iscritto il: sab 09 mag , 2009 3:58 pm

Ecco cosa succede quando dal router pingo l'interfaccia esterna del firewall
12: ICMP echo-request from outside:192.168.2.1 to
192.168.2.2 ID=768 seq=24320 length=40
13: ICMP echo-request: untranslating outside:192.168.2.2 to inside:172.16.3.1
14: ICMP echo-request from outside:192.168.2.1 to 192.168.2.2 ID=768 seq=24576 l
ength=40
15: ICMP echo-request: untranslating outside:192.168.2.2 to inside:172.16.3.1
16: ICMP echo-request from outside:192.168.2.1 to 192.168.2.2 ID=768 seq=24832 l
ength=40
17: ICMP echo-request: untranslating outside:192.168.2.2 to inside:172.16.3.1
Mi sa che è problema di NAT... ma dove di preciso? :twisted:
Dott. in Ingegneria delle Telecomunicazioni
CCNA R&S
CCNA Security
CompTIA Network+
CompTIA Security+
EUCIP Core
EUCIP IT Administrator Fundamentals
MCP Windows Server 2012
MCSA Windows Server 2008
MCITP
MCTS
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