Consiglio Vpn site-to-site

[mulasso]

Ciao ragazzi, mi sono cimentato in una in Vpn site-to-site di due Pix 501.
Vi posto la configurazione di uno dei due, mi potete dare un consiglio.
La mia domanda è questa vabbene così com'è la configurazione, nelle due sedi potranno navigare in Internet?

Grazie

SEDE A

PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd VBCDv2AAFcPKJMMu encrypted
hostname pixacerra
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 tcp any any eq telnet
access-list 101 permit tcp any any eq ssh
access-list 101 permit tcp any any eq www
access-list 101 permit tcp any any eq https
access-list ipsec permit ip 192.168.1.0 255.255.255.0 192.168.0.0 255.255.255.0
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 unreachable
access-list acl-in permit icmp any any time-exceeded
access-list acl-in permit icmp any any echo-reply
access-list acl-in permit icmp any any echo
pager lines 24
logging history errors
mtu outside 1500
ip address outside ip_pubblico_sedeA 255.255.255.248
ip address inside 192.168.1.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm logging informational 100
pdm history enable
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 ip_pubblico_router 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 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set myset esp-3des
crypto map mymap 21 ipsec-isakmp
crypto map mymap 21 match address ipsec
crypto map mymap 21 set peer 88.41.115.66
crypto map mymap 21 set transform-set myset
crypto map mymap interface outside
isakmp enable outside
isakmp key ******** address ip_pubblico_pix_sedeB netmask 255.255.255.248 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

CIAO

[Wizard]

Intanto non vedo le applicazioni delle acl su nessuna interfaccia
Manca la acl per la risoluzione dns
Manca in NAT 0
Configura l' IDS
X adesso basta così

[mulasso]

Scusa sono un newbie come si configura un IDS?
Questa è la nuova configurazione potrebbe andare bene?
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 pixcasoria
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 192.168.0.0 255.255.255.0 192.168.1.0 255.255.255.0
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 unreachable
access-list acl-in permit icmp any any time-exceeded
access-list acl-in permit icmp any any echo-reply
access-list acl-in permit icmp any any echo
pager lines 24
logging history errors
mtu outside 1500
mtu inside 1500
ip address outside xx.xx.115.66 255.255.255.248
ip address inside 192.168.0.254 255.255.255.0
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 xx.xx.115.65 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 192.168.0.0 255.255.255.0 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 pluto esp-des esp-md5-hmac
crypto map pippo 1 ipsec-isakmp
crypto map pippo 1 match address 101
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set pluto esp-des esp-md5-hmac
crypto map pippo 1 ipsec-isakmp
crypto map pippo 1 match address 101
crypto map pippo 1 set peer xx.xx.115.75
crypto map pippo 1 set transform-set pluto
crypto map pippo interface outside
isakmp enable outside
isakmp key ******** address xx.xx.115.75 netmask 255.255.255.255 sorgente
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 0.0.0.0 0.0.0.0 inside
telnet timeout 5
ssh timeout 5
management-access inside
console timeout 0
terminal width 80
Cryptochecksum:b1934f7a611aa41644b9b6bd700bb7ea
: end

[Wizard]

1) Manca la acl per la risoluzione dns MANCA ANCORA
2) Manca in NAT 0 DOVREBBE ESSERE OK
3) Configura l' IDS MANCA ANCORA

1) Le acl come le hai tu (acl-out e acl-in) non sono applicate a nessuna interfaccia quindi è come se non ci fossero. Cosa vuoi permettere in entrata ed in uscita?

3) Per quanto riguarda l'ids e alcune regole di security:

icmp permit any echo-reply outside
icmp permit any echo outside
icmp deny any outside
ip verify reverse-path interface outside
ip verify reverse-path interface inside
ip audit name IDS attack action alarm drop reset
ip audit name IDS-Info info action alarm drop reset
ip audit interface outside IDS-Info
ip audit interface outside IDS
ip audit signature 2000 disable
ip audit signature 2001 disable
ip audit signature 2004 disable

[mulasso]

Scusa come si fa l'acl per la risoluzione dei DNS, ho visto sul documento della cisco: configuring a Simple pix-to-Pix VPN Tunnel Using IPSec non c'è.
sai visto che sono un newbie ho seguito alla lettera quel documento. Un'ultima domanda tra router e firewall io al momento ho messo un vaco rj45, meglio un cross-rollver? o vabbene lo stesso?

Grazie

[Wizard]

La acl x il dns non serve per la vpn l2l ma x la navigazione in internet.
Adatta questa configurazione alla tua esigenza:

access-list ACL-OUT remark *** ACL IN USCITA ***
access-list ACL-OUT permit ip 192.168.0.0 255.255.255.0 any
access-list ACL-IN remark *** ACL IN ENTRATA ***
access-list ACL-IN permit icmp any any traceroute
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 unreachable
access-list ACL-IN permit icmp any any time-exceeded
access-list ACL-IN remark *** ACL PER PERMETTERE TRAFFICO VPN ***
access-list ACL-IN permit esp any any
access-list ACL-IN permit udp any any eq isakmp
access-list ACL-IN permit udp any any eq 4500
access-list ACL-IN permit udp any eq isakmp any
access-list ACL-IN permit udp any eq 4500 any
access-list ACL-IN remark *** ACL PER BLOCCARE L'ACCESSO A VIRUS E ATTACCHI ***
access-list ACL-IN deny tcp any any eq 135
access-list ACL-IN deny udp any any eq 135
access-list ACL-IN deny udp any any eq netbios-ns
access-list ACL-IN deny udp any any eq netbios-dgm
access-list ACL-IN deny tcp any any eq netbios-ssn
access-list ACL-IN deny udp any any eq 139
access-list ACL-IN deny tcp any any eq 445
access-list ACL-IN deny tcp any any eq 593
access-list ACL-IN deny tcp any any eq 2049
access-list ACL-IN deny udp any any eq 2049
access-list ACL-IN deny tcp any any eq 2000
access-list ACL-IN deny tcp any any range 6000 6010
access-list ACL-IN deny udp any any eq 1433
access-list ACL-IN deny udp any any eq 1434
access-list ACL-IN deny udp any any eq 5554
access-list ACL-IN deny udp any any eq 9996
access-list ACL-IN deny udp any any eq 113
access-list ACL-IN deny udp any any eq 3067
access-list ACL-IN remark *** ACL DI SICUREZZA DA RETI OUTSIDE VERSO INSIDE ***
access-list ACL-IN deny ip any any

access-group ACL-IN in interface outside
access-group ACL-OUT in interface inside

[mulasso]

Che significa questa acl, cosa devo scrivere al posto degli asterischi
access-list ACL-IN remark *** ACL PER PERMETTERE TRAFFICO VPN ***

[Wizard]

Non devi scrivere niente, gli asterischi fanno parte del remark e quindi della descrizione

[mulasso]

Questa è la configurazione modificata, ho notato una cosa
se aggiungo , queste access-list, dopodiché non riesco a navigare.
Mentre con la configurazione che ho modificato grazie ai Vostri preziosi consigli, riesco a navigare, ma non vedo l'altra sede.
Devo aggiungere ancora qualcosa
access-list 102 permit ip 192.168.1.0 255.255.255.0 any
pixacerra(config)# access-list 103 remark *** ACL PER PERMETTERE TRAFFICO VPN $
pixacerra(config)# access-list 103 remark *** ACL PER PERMETTERE TRAFFICO VPN $
pixacerra(config)# access-list 101 remark *** ACL PER PERMETTERE TRAFFICO VPN $

CONFIGURAZIONE SEDE A
:
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd ciscorouterpix50 encrypted
hostname pixacerra
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 192.168.1.0 255.255.255.0 192.168.0.0 255.255.255.0
access-list 102 permit tcp any host 151.99.125.2 eq domain
access-list 102 permit udp any host 151.99.125.2 eq domain
access-list 102 permit icmp any any echo
pager lines 24
logging history errors
icmp permit any echo-reply outside
icmp permit any echo outside
mtu outside 1500
mtu inside 1500
ip address outside xx.xx.115.75 255.255.255.248
ip address inside 192.168.1.1 255.255.255.0
ip verify reverse-path interface outside
ip verify reverse-path interface inside
ip audit name IDS attack action alarm drop reset
ip audit name IDS-Info info action alarm drop reset
ip audit interface outside IDS-Info
ip audit interface outside IDS
ip audit info action alarm
ip audit attack action alarm
ip audit signature 2000 disable
ip audit signature 2001 disable
ip audit signature 2004 disable
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
access-group 102 in interface outside
route outside 0.0.0.0 0.0.0.0 ip_pubblico_router_A 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 192.168.1.0 255.255.255.0 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 paperino esp-des esp-md5-hmac
crypto map gastone 1 ipsec-isakmp
crypto map gastone 1 match address 101
crypto map gastone 1 set peer ip_pubblico_pix_B
crypto map gastone 1 set transform-set paperino
crypto map gastone interface outside
isakmp enable outside
isakmp key ******** address ip_pubblico_pix_B 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 0.0.0.0 0.0.0.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80.
Tra il router e il firewall vabbene il cavo normale quello giallo che esce di serie dal router cisco? o quello incrociato arancione?

[Wizard]

access-list 102 permit tcp any host 151.99.125.2 eq domain
access-list 102 permit udp any host 151.99.125.2 eq domain
access-list 102 permit icmp any any echo

Le access-l 102 sono applicate sulla outside e quindi in entrata, in questo caso puoi togliere le regole x il dns perchè quelle le devi mettere sulla inside.

In teoria ci vorrebbe un cavo incrociato tra il router e il firewall.

Per la von andiamo x gradi: l'isakmp è su?
(sh crypto isakmp sa)

[mulasso]

Questo è il risultato di show crypto isakmp sa
Total : 0
Embryonic : 0
dst src state pending created


ho aggiunto anche no-xauth e no-config-mode alla linea (isakmp key ******** address ip_pubblico_pix_B netmask 255.255.255.255)
Ho fatto bene?
Non so più che pesci pigliare
Grazie

[Wizard]

no-xauth e no-config-mode hai fatto benissimo a metterli perchè la autenticazione estesa non ci vuole nelle vpn l2l.
Non va la vpn giusto...?!
Mi che devi fare:
debug cry isakmp
debug cry ipsec
sh debug cry isakmp
sh debug cry ipsec
e vedere cosa succede...
per avviare la vpn lancia un ping da 2 pc che sono dietro ai 2 firewall