asa5505 + Cisco VPN client: rotte locali errate

[mdmazzotti]

Ciao,
ho configurato il Cisco VPN Client per accedere ad un Cisco Asa5505.
La VPN funziona correttamente, se non fosse per una riga errata che viene aggiunta nella route table del computer client remoto, che impedisce la navigazione verso internet.

prima di stabilire il tunnel:
c:\route print
rete mask gateway interface metric
0.0.0.0 0.0.0.0 192.168.20.1 192.168.20.2 1

con il tunnel stabilito:
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.190 1 --> riga errata!
0.0.0.0 0.0.0.0 192.168.20.1 192.168.20.2 1

(192.168.1.190 è l'IP assegnato via DHCP al client vpn).
Se rimuovo la riga in questione, funziona tutto come previsto, quindi traffico encrypted verso la LAN dietro l'asa e unencrypted direttamente dalla connessione locale.
Naturalmente, ho abilito lo split tunnel e il nat exemption.
Non capisco perchè aggiunga quella riga. Grazie in anticipo!

[mdmazzotti]

nessuno ??

[fabiog82]

Puoi postare la configurazione del firewall?

Probabilmente non è stato inserito correttamente qualche parametro nella configurazione (ad occhio mi sa che mancano i parametri split-tunnel nel group-policy attributes)

[mdmazzotti]

Codice: Seleziona tutto

ASA Version 7.2(3) 
!
hostname CiscoASA5505
domain-name default.domain.invalid
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 192.168.1.1 255.255.255.0 
!
interface Vlan2
 nameif outside
 security-level 0
 ip address PUBLIC_IP 255.255.255.248 
!
interface Ethernet0/0
 switchport access vlan 2
!
interface Ethernet0/1
 switchport protected
!
interface Ethernet0/2
 switchport protected
!
interface Ethernet0/3
 switchport protected
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
dns domain-lookup inside
dns server-group DefaultDNS
 name-server 151.99.125.1
 name-server 151.99.0.100
 domain-name default.domain.invalid
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
access-list inside_access_out extended permit udp any any 
access-list inside_access_out extended permit icmp any any 
access-list inside_access_out extended permit tcp any any 
access-list inside_access_in extended permit udp any any 
access-list inside_access_in extended permit icmp any any 
access-list inside_access_in extended permit tcp any any 
access-list outside_access_in extended permit icmp any any 

access-list inside_nat0_outbound extended permit ip any 192.168.1.0 255.255.255.0 
access-list bovina_splitTunnelAcl standard permit any 
pager lines 24
logging enable
logging list all level informational
logging asdm informational
logging flash-bufferwrap
mtu inside 1500
mtu outside 1500
ip local pool VpnIpPool 192.168.1.190-192.168.1.199 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-523.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 0.0.0.0 0.0.0.0

access-group inside_access_in in interface inside
access-group inside_access_out out interface inside
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 79.28.152.94 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
http server enable
http PUBLIC_IP 255.255.255.255 outside
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac 
crypto ipsec transform-set TRANS_ESP_3DES_SHA mode transport
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac 
crypto dynamic-map outside_dyn_map 20 set pfs 
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 40 set pfs 
crypto dynamic-map outside_dyn_map 40 set transform-set ESP-3DES-SHA
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
management-access inside
dhcpd address 192.168.1.200-192.168.1.254 inside
dhcpd dns 151.99.125.1 151.99.0.100 interface inside
dhcpd enable inside
!

!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map 
  inspect ftp 
  inspect h323 h225 
  inspect h323 ras 
  inspect rsh 
  inspect rtsp 
  inspect esmtp 
  inspect sqlnet 
  inspect skinny 
  inspect sunrpc 
  inspect xdmcp 
  inspect sip 
  inspect netbios 
  inspect tftp 
!
service-policy global_policy global
group-policy DfltGrpPolicy attributes
 banner none
 wins-server none
 dns-server none
 dhcp-network-scope none
 vpn-access-hours none
 vpn-simultaneous-logins 1
 vpn-idle-timeout 30
 vpn-session-timeout none
 vpn-filter none
 vpn-tunnel-protocol IPSec l2tp-ipsec webvpn
 password-storage disable
 ip-comp disable
 re-xauth disable
 group-lock none
 pfs disable
 ipsec-udp disable
 ipsec-udp-port 10000
 split-tunnel-policy tunnelall
 split-tunnel-network-list none
 default-domain none
 split-dns none
 intercept-dhcp 255.255.255.255 disable
 secure-unit-authentication disable
 user-authentication disable
 user-authentication-idle-timeout 30
 ip-phone-bypass disable
 leap-bypass disable
 nem disable
 backup-servers keep-client-config
 msie-proxy server none
 msie-proxy method no-modify
 msie-proxy except-list none
 msie-proxy local-bypass disable
 nac disable
 nac-sq-period 300
 nac-reval-period 36000
 nac-default-acl none
 address-pools value VpnIpPool
 smartcard-removal-disconnect enable
 client-firewall none
 client-access-rule none
 webvpn
  functions url-entry
  html-content-filter none
  homepage none
  keep-alive-ignore 4
  http-comp gzip
  filter none
  url-list none
  customization value DfltCustomization
  port-forward none
  port-forward-name value Application Access
  sso-server none
  deny-message value Login was successful, but because certain criteria have not been met or due to some specific group policy, you do not have permission to use any of the VPN features. Contact your IT administrator for more information
  svc none
  svc keep-installer installed
  svc keepalive none
  svc rekey time none
  svc rekey method none
  svc dpd-interval client none
  svc dpd-interval gateway none
  svc compression deflate
group-policy bovina internal
group-policy bovina attributes
 vpn-tunnel-protocol IPSec 
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value bovina_splitTunnelAcl
username ***** password T/zfQD700HnX8ng0 encrypted
tunnel-group DefaultRAGroup general-attributes
 address-pool (inside) VpnIpPool
 address-pool VpnIpPool
 authorization-server-group LOCAL
tunnel-group DefaultRAGroup ipsec-attributes
 pre-shared-key *
 peer-id-validate nocheck
 isakmp keepalive disable
tunnel-group DefaultRAGroup ppp-attributes
 no authentication chap
 authentication ms-chap-v2
tunnel-group bovina type ipsec-ra
tunnel-group bovina general-attributes
 address-pool VpnIpPool
 default-group-policy bovina
tunnel-group bovina ipsec-attributes
 pre-shared-key *
prompt hostname context 
Cryptochecksum:c74ff1077a921232e246240122bf900f47
: end

Lo split tunnel è attivo, come vedi. La cosa ancora piu strana è che su Windows Vista, la rotta 0.0.0.0 0.0.0.0 192.168.1.X 192.168.1.1 viene sì aggiunta, ma con metric 100, quindi non "sovrascrive" quella corretta e non c'è bisogno di modificare la route table.
Brancolo proprio nel buio... grazie!

[mdmazzotti]

nessuna idea? dite che è un bug?

[risk]

ciao

lo split è errato

access-list bovina_splitTunnelAcl standard permit any

alla fine della acl non devi mettere any ma la tua rete interna


vista la data nella quale hai postato la richiesta penso tu abbia già risolto
ma, se funzionasse, potrebbe servire a qualcun altro.

ciao