PIX: Cisco VPN Client connects but no routing
Hello
We have a Cisco PIX 515 with software 7.1 (2). He accepts Cisco VPN Client connections with no problems, but no routing does to internal networks directly connected to the PIX. For example, my PC is affected by the IP 172.16.2.57 and then ping does not respond to internal Windows server 172.16.0.12 or trying to RDP. The most irritating thing is that these attempts are recorded in the system log, but always ended with "SYN timeout", as follows:
2009-01-06 23:23:01 Local4.Info 217.15.42.214% 302013-6-PIX: built 3315917 for incoming TCP connections (172.16.2.57/1283) outside:172.16.2.57/1283 inside: ALAI2 / 3389 (ALAI2/3389)
2009-01-06 23:23:31 Local4.Info 217.15.42.214% 302014-6-PIX: TCP connection disassembly 3315917 for outside:172.16.2.57/1283 inside: ALAI2 / 3389 duration 0:00:30 bytes 0 SYN Timeout
2009-01-06 23:23:31 Local4.Debug 217.15.42.214% 7-PIX-609002: duration of disassembly-outside local host: 172.16.2.57 0:00:30
We tried to activate and deactivate "nat-control", "permit same-security-traffic inter-interface" and "permit same-security-traffic intra-interface", but the results are the same: the VPN connection is successfully established, but remote clients cannot reach the internal servers.
I enclose the training concerned in order to understand the problem:
interface Ethernet0
Speed 100
full duplex
nameif outside
security-level 0
IP address xx.yy.zz.tt 255.255.255.240
!
interface Ethernet1
nameif inside
security-level 100
172.16.0.1 IP address 255.255.255.0
!
access extensive list ip 172.16.0.0 inside_nat0_outbound allow 255.255.255.0 172.16.2.56 255.255.255.248
!
access extensive list ip 172.16.0.0 outside_cryptomap_dyn_20 allow 255.255.255.0 172.16.2.56 255.255.255.248
!
VPN_client_group_splitTunnelAcl list standard access allowed 172.16.0.0 255.255.255.0
!
IP local pool pool_vpn_clientes 172.16.2.57 - 172.16.2.62 mask 255.255.255.248
!
NAT-control
Global xx.yy.zz.tt 12 (outside)
NAT (inside) 0-list of access inside_nat0_outbound
NAT (inside) 12 172.16.0.12 255.255.255.255
!
internal VPN_clientes group strategy
attributes of Group Policy VPN_clientes
xxyyzz.NET value by default-field
internal VPN_client_group group strategy
attributes of Group Policy VPN_client_group
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list VPN_client_group_splitTunnelAcl
xxyyzz.local value by default-field
!
I join all the details of the cryptographic algorithms because the VPN is successfully completed, as I said at the beginning. In addition, routing tables are irrelevant in my opinion, because the inaccessible hosts are directly connected to the internal LAN of the PIX 515.
Thank you very much.
can you confirm asa have NAT traversal allow otherwise, activate it in asa and vpn clients try again.
PIX / ASA 7.1 and earlier versions
PIX (config) #isakmp nat-traversal 20
PIX / ASA 7.2 (1) and later versions
PIX (config) #crypto isakmp nat-traversal 20
Tags: Cisco Security
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The 192.168.1.0/24 LAN I ping the Client comes with Client VPN 10.10.10.11 as it should. But I can't ping or access network resources in the local network for AnyConnected customer's PC that connected through the VPN.
Here is the config Cisco ASA:
: Saved : : Hardware: ASA5505, 512 MB RAM, CPU Geode 500 MHz : ASA Version 9.2(2) ! hostname leela names ip local pool VPN-Pool 10.10.10.10-10.10.10.200 mask 255.255.255.0 ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 switchport access vlan 5 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! interface Vlan1 nameif inside security-level 100 ip address 192.168.1.250 255.255.255.0 ! interface Vlan2 nameif outside security-level 0 ip address dhcp ! interface Vlan5 nameif dmz security-level 50 ip address 172.16.0.250 255.255.255.0 ! ftp mode passive clock timezone CEST 1 clock summer-time CEDT recurring last Sun Mar 2:00 last Sun Oct 3:00 dns domain-lookup inside dns server-group DefaultDNS name-server 192.168.1.10 same-security-traffic permit inter-interface same-security-traffic permit intra-interface object network obj_any subnet 0.0.0.0 0.0.0.0 object network VPN-Pool subnet 10.10.10.0 255.255.255.0 description VPN-Pool object network NETWORK_OBJ_10.10.10.0_24 subnet 10.10.10.0 255.255.255.0 access-list inside_access_in extended permit ip any any access-list inside_access_in extended permit ip object VPN-Pool any access-list dmz_access_in extended permit ip any any access-list global_access extended permit ip any any access-list outside_access_in extended permit ip any any pager lines 24 logging enable logging asdm informational mtu inside 1500 mtu outside 1500 mtu dmz 1500 no failover icmp unreachable rate-limit 1 burst-size 1 no asdm history enable arp timeout 14400 no arp permit-nonconnected nat (inside,dmz) source static any any destination static NETWORK_OBJ_10.10.10.0_24 NETWORK_OBJ_10.10.10.0_24 no-proxy-arp route-lookup inactive access-group inside_access_in in interface inside access-group outside_access_in in interface outside access-group dmz_access_in in interface dmz access-group global_access global route dmz 0.0.0.0 0.0.0.0 172.16.0.254 1 route inside 0.0.0.0 0.0.0.0 192.168.1.254 tunneled timeout xlate 3:00:00 timeout pat-xlate 0:00:30 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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute timeout tcp-proxy-reassembly 0:01:00 timeout floating-conn 0:00:00 dynamic-access-policy-record DfltAccessPolicy server-type microsoft user-identity default-domain LOCAL aaa authentication enable console LDAP_SRV_GRP LOCAL aaa authentication http console LDAP_SRV_GRP LOCAL aaa authentication ssh console LDAP_SRV_GRP LOCAL aaa authentication serial console LOCAL http server enable 444 http 192.168.1.0 255.255.255.0 inside snmp-server location Vienna crypto ipsec ikev2 ipsec-proposal DES protocol esp encryption des protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal 3DES protocol esp encryption 3des protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES protocol esp encryption aes protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES192 protocol esp encryption aes-192 protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES256 protocol esp encryption aes-256 protocol esp integrity sha-1 md5 crypto ipsec security-association pmtu-aging infinite crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set ikev2 ipsec-proposal AES256 AES192 AES 3DES DES crypto map inside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP crypto map inside_map interface inside crypto map dmz_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP crypto map dmz_map interface dmz crypto ca trustpoint ASDM_TrustPoint0 enrollment self subject-name CN=leela proxy-ldc-issuer crl configure crypto ca trustpoint ASDM_TrustPoint1 enrollment terminal crl configure crypto ca trustpool policy crypto ca certificate chain ASDM_TrustPoint0 quit crypto ikev2 policy 1 encryption aes-256 integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 10 encryption aes-192 integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 20 encryption aes integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 30 encryption 3des integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 40 encryption des integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 enable dmz client-services port 443 crypto ikev2 remote-access trustpoint ASDM_TrustPoint0 telnet timeout 5 no ssh stricthostkeycheck ssh 192.168.1.0 255.255.255.0 inside ssh timeout 30 ssh key-exchange group dh-group1-sha1 console timeout 0 dhcpd auto_config outside ! dhcpd address 192.168.1.254-192.168.1.254 inside ! threat-detection basic-threat threat-detection statistics access-list no threat-detection statistics tcp-intercept dynamic-filter updater-client enable dynamic-filter use-database ntp server 192.168.1.10 source inside ssl trust-point ASDM_TrustPoint0 dmz ssl trust-point ASDM_TrustPoint0 inside webvpn enable dmz no anyconnect-essentials anyconnect image disk0:/anyconnect-macosx-i386-3.1.05170-k9.pkg 1 anyconnect image disk0:/anyconnect-win-3.1.05170-k9.pkg 2 anyconnect image disk0:/anyconnect-linux-3.1.05170-k9.pkg 3 anyconnect image disk0:/anyconnect-linux-64-3.1.05170-k9.pkg 4 anyconnect profiles AnyConnect_client_profile disk0:/AnyConnect_client_profile.xml anyconnect enable tunnel-group-list enable group-policy DfltGrpPolicy attributes default-domain value group-policy GroupPolicy_AnyConnect internal group-policy GroupPolicy_AnyConnect attributes wins-server none dns-server value 192.168.1.10 vpn-tunnel-protocol ikev2 ssl-client webvpn anyconnect profiles value AnyConnect_client_profile type user group-policy portal internal group-policy portal attributes vpn-tunnel-protocol ssl-clientless webvpn url-list none username tunnel-group AnyConnect type remote-access tunnel-group AnyConnect general-attributes address-pool VPN-Pool authentication-server-group LDAP_SRV_GRP default-group-policy GroupPolicy_AnyConnect tunnel-group AnyConnect webvpn-attributes group-alias AnyConnect enable tunnel-group Portal type remote-access tunnel-group Portal general-attributes authentication-server-group LDAP_SRV_GRP default-group-policy portal tunnel-group Portal webvpn-attributes group-alias portal enable! ! ! policy-map type inspect dns preset_dns_map parameters message-length maximum client auto message-length maximum 512 ! prompt hostname context no call-home reporting anonymous hpm topN enable : end no asdm history enable
Can someone please help me solve this problem?
When I tried to solve this I didn't choose which interface the Packet Tracer?
The interface inside or DMZ interface? Inside, he says it will not work with the dmz but the error did not help me
Anyone here knows why it does not work?
Hello
Inside LAN is directly connected to the right firewall VPN... then I don't think you have to have the itinerary tunnele... can you try to remove the road tunnel mode and check.
entrance to the road that is static to achieve 10.10.10.11 as its display is correct...
Route by tunnel watch also with 255 administrative distance. I've never used that in my scenarios... lets see...
Concerning
Knockaert
-
Hello
I installed a router cisco 2801 to accept vpn connections, I use the cisco vpn client and the tunnel is created and is being created of the its.
However, I cannot ping my vlan (only those who have a nat inside the ACL, those who have not said I can ping), so I have a NAT problem, just don't know where.
Heres part of my setup on the ACL,
IP local pool ippool 192.168.100.10 192.168.100.100
by default-gateway IP X.X.X.X (ISP GATEWAY)
IP forward-Protocol ND
IP http server
no ip http secure server
IP http flash path:
!
!
IP nat inside source list 1 interface FastEthernet0/1 overload
IP nat inside source list 2 interface FastEthernet0/1 overload
IP nat inside source list 3 interface FastEthernet0/1 overload
IP nat inside source list 6 interface FastEthernet0/1 overload
overload of IP nat inside source list 20 interface FastEthernet0/1
IP nat inside source map route SHEEP interface FastEthernet0/1 overload
IP route 0.0.0.0 0.0.0.0 X.X.X.X (external IP)
Route IP 192.168.10.0 255.255.255.0 192.168.90.2
IP route 192.168.20.0 255.255.255.0 192.168.90.2
IP route 192.168.30.0 255.255.255.0 192.168.90.2
IP route 192.168.40.0 255.255.255.0 192.168.90.2
IP route 192.168.50.0 255.255.255.0 192.168.90.2
IP route 192.168.60.0 255.255.255.0 192.168.90.2
IP route 192.168.200.0 255.255.255.0 192.168.90.2
!
NAT extended IP access list
deny ip 192.168.10.0 0.0.0.255 192.168.100.0 0.0.0.255
deny ip 192.168.20.0 0.0.0.255 192.168.100.0 0.0.0.255
deny ip 192.168.30.0 0.0.0.255 192.168.100.0 0.0.0.255
deny ip 192.168.60.0 0.0.0.255 192.168.100.0 0.0.0.255
deny ip 192.168.90.0 0.0.0.255 192.168.100.0 0.0.0.255
permit ip 192.168.10.0 0.0.0.255 any
ip licensing 192.168.20.0 0.0.0.255 any
IP 192.168.30.0 allow 0.0.0.255 any
IP 192.168.60.0 allow 0.0.0.255 any
IP 192.168.90.0 allow 0.0.0.255 any
!
access-list 1 permit 192.168.90.0 0.0.0.255
access-list 2 allow to 192.168.10.0 0.0.0.255
access-list 3 allow 192.168.30.0 0.0.0.255
access-list 6 permit 192.168.60.0 0.0.0.255
access-list 20 allow 192.168.200.0 0.0.0.255
!
SHEEP allowed 10 route map
corresponds to the IP NAT
!
The 192.168.90.2 address is my switch L3 (Cisco 3750)
Any pointer is more than welcome,
Concerning
Miranda,
Have you tried to remove the following lines:
IP nat inside source list 1 interface FastEthernet0/1 overload
IP nat inside source list 2 interface FastEthernet0/1 overload
IP nat inside source list 3 interface FastEthernet0/1 overload
IP nat inside source list 6 interface FastEthernet0/1 overload
overload of IP nat inside source list 20 interface FastEthernet0/1
And simply let this one:
IP nat inside source map route SHEEP interface FastEthernet0/1 overload
?
I have all the neceary allowed in the ACL of NAT, so you do not have individual lines for each network.
Also, I noticed that your ACL 20 reads
access-list 20 allow 192.168.200.0 0.0.0.255
But your NAT ACL bed
ip licensing 192.168.20.0 0.0.0.255 any
I think you have a typo in there, you have a 200 on 20 and on the other.
Check it out and let me know how it goes. Don't forget to clear the NAT table after deleting these lines:
clear the ip nat trans *.
I hope this helps!
Raga
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Cisco vpn client is supported on the analogue ppp connection
can someone pls tell me if we can use the client vpn cisco on a ppp connection analog and put a pix that is not PPPs running. If it works, then why do we need to VPN L2tp/ipsec. can someone pls tell me something abt it. It is very urgent.
concerning
Assane
Assane,
If I understand your question, you speak with PPP initially to get an IP address from your service provider, then use the Client VPN VPN in your Pix Firewall. If so, yes it is possible.
To name a few reasons why PPTP or L2TP/IPSEC is used instead of Cisco VPN Client are:
1. because companies have used a PPTP or L2TP/IPSEC solution for some time and are migrating to Cisco VPN
2. do not install vpn on the PC client software
3. won't pay for the VPN Client software licenses
Let me know if it helps.
Kind regards
Arul
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Unable to connect via the Cisco VPN Client
Hello
I have configured remote access VPN to ASA and tries to connect via the Cisco VPN Client 5.0
I am not able to connect and watch the journal on the SAA
ASA-3-713902: Group = xxxxx, IP = x.x.x.x, withdrawal homologous peer table is placed, no match!
ASA-4-713903: Group = xxxxx, IP x.x.x.x, error: impossible to rmeove PeerTblEntry
ASA does not support the K9 i.e. VPN - DES is enabled and VPN-3DES-AES is disabled.
What could be the reason.
Concerning
Hi, I had this same problem, here is the solution:
When you perform a debug crypto isakmp 255, so you see that the cisco vpn client does not support SHA +, you must use MD5 + AN or sha with 3DES/AES.
Be careful, this debugging is very talkative, but that's the only way I found to get ITS proposal on debugging.
Well, change your strategy using MD5 isakmp / OF would do the trick.
Maybe you are looking for
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