VPN IPsec over TCP on PIX 6.3
Hi all:
Does anyone know how config IPsec over TCP on PIX6.3?
Thank you all...
Ted Wen.
Hello
You can enable IPSec over TCP to PIX Security Appliance Software Version 7.0 with the command "isakmp ipsec-over-tcp port. But I can't make it work and have posted my problem on the Forums of Discussion.
Thank you.
B.Rgds,
Lim TS
Tags: Cisco Security
Similar Questions
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IPSec over TCP on PIX 501F to the catalog
Hello
Is there a way I can configure IPSec over TCP as default configuration in the PIX firewall. I'm under 6.3
The PIX does not support IPsec over TCP. It doesn't support NAT - T, which is IPSec over UDP/4500, which houses also of the Cisco VPN client. Just add the following command on the PIX:
ISAKMP nat-traversal
The PIX and VPN client auto-négociera if necessary IPSec encapsulation. See http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/cmdref/gl.htm#wp1027312 for more details.
-
Nice day
I would like to know if there is the possibility of configuring IPSEC over TCP on the pix Firewall.
This features are supported by the latest Pix OS (6.3.3)?
Thank you
Diego
The pix does not support ipsec over tcp. It supports NAT Traversal that is ipsec over udp. IPSEC over tcp is compatible with the VPN concentrator. The next link talks about NAT traversal.
http://www.Cisco.com/univercd/CC/TD/doc/product/iaabu/PIX/pix_sw/v_63/config/ipsecint.htm#1057446
Take a look at this link to configure IPSec over TCP on a VPN 3000 Concentrator
-
Client VPN with tunneling IPSEC over TCP transport does not
Hello world
Client VPN works well with tunneling IPSEC over UDP transport.
I test to see if it works when I chose the VPN client with ipsec over tcp.
Under the group policy, I disabled the IPSEC over UDP and home port 10000
But the VPN connection has failed.
What should I do to work VPN using IPSEC over TCP
Concerning
MAhesh
Mahesh,
You must use "ikev1 crypto ipsec-over-tcp port 10000.
As crypto isakmp ipsec-over-tcp work on image below 8.3
HTH
-
IPSec over TCP works on VPN 3030 interface (3) external?
I configured the third external interface and can connect with the ESP and UDP tunnel, but not with IPsec over TCP.
The customer says:
Unexpected TCP control packet received a.b.c.d, src port 10000, port dst 4408, flags 14: 00
the hub said nothing, although I tried several event classes
the document said "IPSec over TCP works with the VPN client software and hardware VPN 3002 client. It only works on the public interface. It is a client to the function of hub only. It does not work for LAN-to-LAN connections. "
This means - it works on the public interface real, physical?
or it should work on the external interface if I click on the checkbox to its public interface?
Thanks for any advice,
Martin
IPSec over TCP is designed to operate only on the real public interface #2.
There were a few technical reasons behind it, among them:
(1) some clients cancel their tunnels on the private interface (one-arm-config) and that would cause a headache when trying to HTTP through the VPN 3000 if IPSec/TCP has been installed for Port 80/443. We decided to pull out of the private Interface.
(2) that the external interface #3, we have chosen not to enable IPSec/over TCP Dynamics fielterso n it mainly because of the load balancing.
Since the LB only works on real public interface #2, even once, we chose to leave
IPSec/TCP out of it.
Nelson
-
Difference between IPSec over TCP and UDP IPsecover
Hello world
I'm testing the VPN to the user's PC.
When I test the PC of the user using IPsecoverTCP it uses protocol 10000.
When I check on ASA - ASDM under connection details
ike1 - UDP Destination Port 500
IPsecOverTCP TCP Dst Port 10000
using Ipsecover UDP
IKEv1 - Destination UDP 500 Port
IPsecOverUDP - Port of Destination UDP Tunnel 10000
Therefore when using TCP or UDP uses the same port 500 and 10000.
Is need to know what is the major difference between these two connections just TCP or UDP?
Concerning
MAhesh
IPSec over TCP is used in scenarios where:
1 UDP port 500 is blocked, resulting in incomplete IKE negotiations
2 ESP is not allowed to cross and encrypted traffic thus do not cross.
3. network administrator prefers to use a connection oriented protocol.
4. IPSec over TCP may be necessary when the intermediate NAT or PAT device is stateful firewall.
As there are IPSec over UDP with IPSec over TCP, there is no room for negotiation. IPSec on the TCP packets are encapsulated from the beginning of the cycle of implementation of the tunnel. This feature is available only for remote access VPN not for tunnel L2L. Also does not work with proxy firewall.
While IPSec via UDP, similar to NAT - T, is used to encapsulate ESP packets using a UDP wrapper. Useful in scenarios where the VPN clients don't support NAT - T and are behind a firewall that does not allow the ESP packets to pass through. IN IPSec over UDP, the IKE negotiations has always use port UDP 500.
-
When you set this option on the SAA, that affect all VPN? It is an element of configuration global, if I work with UDP VPN, but I am to set up a VPN using TCP, the other VPN still use UDP, or that they do not fail as the other end isn't the same configuration?
IPSec over TCP is supported only for the connection to access remote vpn client for the SAA. It is not supported for VPN LAN-to-LAN tunnel.
And Yes, it will affect all the client connection to access remote vpn for the SAA once you activate it in the world.
Here is the document for your reference:
http://www.Cisco.com/en/us/docs/security/ASA/asa83/configuration/guide/IKE.html#wp1059912
-
3.5.1 to 506th Pix VPN Client using IPsec over TCP
Is it possible to do when there is a device in the path of the VPN tunnel that will make the static NAT?
The reason is that the external interface of the Pix will have a private address, and it is the endpoint of the tunnel. The performance of NAT device has a public address, who thinks that the VPN client is the end of the tunnel, the static NAT will result the incoming packets on port UDP 500 for a destination of the Pix.
Thank you.
The Pix can not do TCP encapsulation. He can do UDP encapsulation.
You can create IPSec tunnels to the external of the Pix even if address he addresses NATted provided that it is NOT of PAT and NAT.
-
Closing of TCP-over-IPSec or IPSec-over-UDP on PIX
Cisco VPN Client (no hub) end on a PIX firewall outside interface. Some users behind a nat/pat device. Therefore, we bring transparency NAT via UDP or TCP. The PIX firewall must be ready to put an end to these sessions. Does anyone know how?
Thank you
Edgar
Hi Edgar,
Yes, the feature has been added to 6.3. We use Nat traversal for PIX (UDP 4500), version of the client VPN Cisco that supports this type of nat - t are 3.6 and later versions. Here are the URLs with info on both:
PIX
http://www.Cisco.com/univercd/CC/TD/doc/product/iaabu/PIX/pix_sw/v_63/63rnotes/pixrn63.htm#65230
VPN client
http://www.Cisco.com/univercd/CC/TD/doc/product/VPN/client/3_6/365clnt.htm#1175427
Kind regards
Arthur
-
Hello
I finally got my vpn for work (router 1712), but only with IPSEC over UDP. Everything works well, but some clients are behind a firewall and only port 80 and 443 are allowed. Is it not possible to create a vpn tunnel low port 443?
I tried looking for examples, but can not find, I found some info that I should use IPSEC over TCP. Can I use Ipsec over UDP and TCP at the same time?
Greetings,
Gunther.
Hi Gunther,
IOS does not yet support ipsec over tcp.
You can not run VPN on port 443 (SSL vpn) with a router either.
You should go for a hub of series k 3 or wait for a newer version of IOS or PIX code.
-
ASA VPN IPSec: MTU or CFG error Question?
Hello
I have a strange problem... If I created a tunnel IPSec the ASA vs, it goes up but doesn't work if the package + / less 150 bytes... case of exceeded the size of the packets, the ASA didn't send to client IPSec; The size is related to the type of configured tunnels:
VPNclient Installer ping-f-l xxx IPSec over TCP 152 IPSEC over UDP 123 No transportation Tunnelling 115 Debug icmp report always ping request and response but with packet sniffing on vlan outside don't see a response packet when I try with higher values than those appearing:
ping 'small':
22 3.748396 x.x.x.x 192.168.y.y ESP ESP (SPI=0x7106d9e3) <- ping request
23 3.748884 192.168.y.y x.x.x.x ESP ESP (SPI=0x05d0db4a) <- ping replyping 'big':
27 2.981950 x.x.x.x 192.168.y.y ESP ESP(SPI=0x7106d9e3) <- ping request missing ping reply!The problem occurs with any Protocol (TCP, UDP, ICMP) and checking the configuration with other ASA found no differences.
The SAA is a 5505 with fw 8.0 (4) and IPSec microcode CNlite-MC-IPSECm-HAND-2, 05.
Thank you
Arturo.
This is much like the following bug:
CSCsu26649 Big packages removed with enable configured ip-comp
Can you confirm that you have 'enable ip-comp' in your config vpn file? If so, that que desactiver turn off and you should be ok.
Better yet, go to 8.0 (5).
HTH
Herbert
-
Unable to connect to remote vpn IPSec (Error 412)
Hello
Try to configure the IPSec vpn connection but error 412: the remote peer not responding.
Router Cisco is directly connected to the internet using the dialer interface.
So far, I tried the following:
Disabled Windows Firewall
IPSec over TCP ticket (received error 414)
Permit to debug crypto ISAKMP and IPSEC (no illustrated newspaper)
Newspapers enabled on the version of client VPN 5.0.01.0440
(Impossible to establish Phase 1 SA with server 'xxxxxxxxx' due to the 'DEL_REASON_PEER_NOT_RESPONDING')
The router configuration:
version 12.4
horodateurs service debug datetime msec
Log service timestamps datetime msec
encryption password service
!
!
boot-start-marker
boot-end-marker
!
!
AAA new-model
!
!
AAA authentication login default local
AAA authentication login usr_auth local
AAA authorization grp_auth LAN
!
AAA - the id of the joint session
!
resources policy
!
MMI-60 polling interval
No mmi self-configuring
No pvc mmi
MMI snmp-timeout 180
IP subnet zero
no ip source route
IP cef
!
!
No dhcp use connected vrf ip
DHCP excluded-address IP 192.168.3.1 192.168.3.10
!
pool IP dhcp pool Classes
network 192.168.3.0 255.255.255.0
default router 192.168.3.1
Server DNS XXXXXX xxxxxxxxxxx
!
!
no ip bootp Server
no ip domain search
IP domain name xxxxxxxxx
property intellectual ssh time 80
VPDN enable
!
!
!
!
!
username 7 password xxxxxx xxxxx
!
!
!
crypto ISAKMP policy 10
BA aes
preshared authentication
Group 5
!
ISAKMP crypto client configuration group client_cfg
XXXXXXX key
DNS xxxxxxx
pool vpn_pool
ACL 120
Max-users 2
Profile of isakmp crypto vpn-ike-profile-1
client_cfg group identity match
client authentication list usr_auth
ISAKMP authorization list grp_auth
client configuration address respond
virtual-model 2
!
!
Crypto ipsec transform-set encrypt-method-1 esp - aes esp-sha-hmac
!
Crypto ipsec VPN-profile-1 profile
the transform-set encrypt-method-1 value
!
!
!
!
interface Loopback0
the IP 10.0.0.1 255.255.255.0
!
ATM0 interface
no ip address
No atm ilmi-keepalive
DSL-automatic operation mode
!
point-to-point interface ATM0.1
no link-status of snmp trap
PVC 8/35
PPPoE-client dial-pool-number 1
!
!
interface FastEthernet0
no ip address
automatic speed
!
interface FastEthernet1
Shutdown
!
interface FastEthernet2
switchport access vlan 2
!
interface FastEthernet3
switchport access vlan 3
!
interface FastEthernet4
switchport access vlan 4
half duplex
!
tunnel type of interface virtual-Template2
IP unnumbered Loopback0
IP nat inside
IP virtual-reassembly
ipv4 ipsec tunnel mode
Profile of tunnel ipsec VPN-profile-1 protection
!
interface Vlan1
no ip address
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interface Vlan2
192.168.1.100 IP address 255.255.255.0
IP nat inside
IP virtual-reassembly
IP tcp adjust-mss 1452
!
interface Vlan3
address 192.168.3.1 IP 255.255.255.0
IP access-group 101 in
IP nat inside
IP virtual-reassembly
IP tcp adjust-mss 1452
!
interface Vlan4
192.168.4.1 IP address 255.255.255.0
IP nat inside
IP virtual-reassembly
IP tcp adjust-mss 1452
!
interface Dialer1
the negotiated IP address
IP mtu 1492
NAT outside IP
IP virtual-reassembly
encapsulation ppp
Dialer pool 1
Dialer-Group 1
PPP authentication pap callin
PPP pap sent-name of user password xxxxxx xxxxxxx 7
!
local pool 10.0.0.10 IP vpn_pool 10.0.0.20
IP classless
IP route 0.0.0.0 0.0.0.0 Dialer1
!
no ip address of the http server
no ip http secure server
the IP nat inside source 1 list overload of the Dialer1 interface
IP nat inside source static tcp 192.168.1.1 25 25 Dialer1 interface
IP nat inside source static tcp 192.168.1.1 80 80 Dialer1 interface
IP nat inside source static udp 192.168.1.1 53 53 Dialer1 interface
IP nat inside source static tcp 192.168.1.1 53 53 Dialer1 interface
IP nat inside source static tcp 192.168.1.1 interface 1000 Dialer1 1000
IP nat inside source static tcp 192.168.1.1 interface 443 443 Dialer1
IP nat inside source static tcp 192.168.1.1 interface Dialer1 143 143
!
WAN-IN extended IP access list
refuse the ip 0.0.0.0 0.255.255.255 everything
deny ip 10.0.0.0 0.255.255.255 everything
deny ip 100.64.0.0 0.63.255.255 all
deny ip 127.0.0.0 0.255.255.255 everything
deny ip 169.254.0.0 0.0.255.255 everything
deny ip 172.16.0.0 0.15.255.255 all
deny ip 192.0.0.0 0.0.0.255 any
deny ip 192.0.2.0 0.0.0.255 any
deny ip 192.168.0.0 0.0.255.255 everything
deny ip 198.18.0.0 0.1.255.255 all
deny ip 198.51.100.0 0.0.0.255 any
deny ip 203.0.113.0 0.0.0.255 any
refuse the 224.0.0.0 ip 31.255.255.255 all
allow an ip
!
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 1 permit 192.168.3.0 0.0.0.255
access-list 1 permit 192.168.4.0 0.0.0.255
access-list 101 deny ip 192.168.3.0 0.0.0.255 192.168.1.0 0.0.0.255
access list 101 ip allow a whole
access ip-list 120 allow a whole
!
control plan
!
!
Line con 0
exec-timeout 5 0
line to 0
exec-timeout 5 0
password 7 xxxxxxxxxxxx
line vty 0 4
exec-timeout 5 0
password 7 xxxxxxxxxxxx
preferred transport ssh
entry ssh transport
line vty 5 15
exec-timeout 5 0
password 7 xxxxxxxxxxxx
preferred transport ssh
entry ssh transport
!
end
I don't get any password prompt, so I guess there is a misconfiguration. Would appreciate if you can help with this.
Thank you
The 10.0.0.x pool is configured properly. Just change the NAT to traffic between 192.168.1.x, 3.x, and 4.x are exempt in NAT, where the above change config.
Your split tunnel ACL says allow an entire ip, so please change it to the following:
access-list 120 allow ip 192.168.1.0 0.0.0.255 10.0.0.0 0.0.0.255
access-list 120 allow ip 192.168.3.0 0.0.0.255 10.0.0.0 0.0.0.255
access-list 120 allow ip 192.168.4.0 0.0.0.255 10.0.0.0 0.0.0.255
-
PIX support IPsec over UDP or TCP
Series 500 firewall Cisco PIX support IPsec over UDP or TCP so that the secure tunnel VPN IPsec can go through the PAT and NAT. If so, how to configure it? THX
Concerning
Jeffrey
Hi Jeff,
The tentative date is around end of March 2003.
Kind regards
Arul
-
IPsec over UDP - remote VPN access
Hello world
The VPN client user PC IPSEC over UDP option is checked under transport.
When I check the details of the phase 1 of IKE ASDM of user login, it shows only UDP 500 port not port 4500.
Means that user PC VPN ASA there that no device in question makes NAT.
What happens if we checked the same option in the client IPSEC VPN - over UDP and now, if we see the port UDP 4500 under IKE phase 1 Connection Details
This means that there is now ASA a NAT device VPN Client PC, but he allows IKE connection phase 1?
Concerning
MAhesh
Hello Manu,
I suggest to use the following commands on your ASA have a look at these ports as the test of VPN connections. The command that you use depends on your level of software as minor changes in the format of the command
View details remote vpn-sessiondb
view sessiondb-vpn remote detail filter p-ipaddress
Or
View details of ra-ikev1-ipsec-vpn-sessiondb
display the filter retail ra-ikev1-ipsec-vpn-sessiondb p-ipaddress
These will provide information on the type of VPN Client connection.
Here are a few out of different situations when connecting with the VPN Client
Dynamic PAT - no Transparent on the Client VPN tunnel
- Through the VPN connections do not work as connects via PAT without Transparent tunnel
Username: Index: 22
Public IP address 10.0.1.2 assigned IP::
Protocol: IPsec IKEv1
IKEv1:
Tunnel ID: 22.1
The UDP Src Port: 18451 UDP Dst Port: 500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: AES 256 hash: SHA1
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28551 seconds
Group D/H: 2
Name of the filter:
Client OS: Windows NT Client OS worm: 5.0.07.0290
IPsec:
Tunnel ID: 22.2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 10.0.1.2/255.255.255.255/0/0
Encryption: AES 256 hash: SHA1
Encapsulation: Tunnel
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28551 seconds
Idle Time Out: 30 Minutes idling left: 25 Minutes
TX Bytes: 0 Rx bytes: 0
TX pkts: Rx Pkts 0: 0
Dynamic PAT - Transparent tunnel (NAT/PAT) on the VPN Client
- Via VPN connections work as we use Tunneling Transparent when we train the dynamic VPN Client through PAT connection
Username: Index: 28
Public IP address 10.0.1.2 assigned IP::
Protocol: IKEv1 IPsecOverNatT
IKEv1:
Tunnel ID: 28.1
The UDP Src Port: 52825 UDP Dst Port: 4500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: AES 256 hash: SHA1
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28784 seconds
Group D/H: 2
Name of the filter:
Client OS: Windows NT Client OS worm: 5.0.07.0290
IPsecOverNatT:
Tunnel ID: 28.2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 10.0.1.2/255.255.255.255/0/0
Encryption: AES 256 hash: SHA1
Encapsulation: Tunnel
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28784 seconds
Idle Time Out: 30 Minutes idling left: 30 Minutes
TX Bytes: 360 bytes Rx: 360
TX pkts: 6 Pkts Rx: 6
Dynamics PAT, Transparent IPsec (TCP) on the Client VPN tunnel
- Via VPN connections work as we use Tunneling Transparent when we train the dynamic VPN Client through PAT connection
Username: Index: 24
Public IP address 10.0.1.2 assigned IP::
Protocol: IKEv1 IPsecOverTCP
IKEv1:
Tunnel ID: 24.1
The UDP Src Port: 20343 UDP Dst Port: 500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: AES 256 hash: SHA1
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28792 seconds
Group D/H: 2
Name of the filter:
Client OS: Windows NT Client OS worm: 5.0.07.0290
IPsecOverTCP:
Tunnel ID: 24,2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 10.0.1.2/255.255.255.255/0/0
Encryption: AES 256 hash: SHA1
Encapsulation: Tunnel TCP Src Port: 20343
The TCP Dst Port: 10000
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28792 seconds
Idle Time Out: 30 Minutes idling left: 30 Minutes
TX Bytes: 180 bytes Rx: 180
TX pkts: Rx 3 Pkts: 3
Static NAT - no Transparent on the Client VPN tunnel
- VPN Client connections to the LAN work because our VPN Client has a static NAT configured for its local IP address. This allows the ESP without encapsulation through the device doing the static NAT. You must allow the ESP traffic through the NAT device of management of the device VPN or configure VPN connections inspection if there is an ASA acting as the NAT device.
Username: Index: 25
Public IP address 10.0.1.2 assigned IP::
Protocol: IPsec IKEv1
IKEv1:
Tunnel ID: 25.1
The UDP Src Port: 50136 UDP Dst Port: 500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: AES 256 hash: SHA1
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28791 seconds
Group D/H: 2
Name of the filter:
Client OS: Windows NT Client OS worm: 5.0.07.0290
IPsec:
Tunnel ID: 25.2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 10.0.1.2/255.255.255.255/0/0
Encryption: AES 256 hash: SHA1
Encapsulation: Tunnel
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28791 seconds
Idle Time Out: 30 Minutes idling left: 30 Minutes
TX Bytes: 120 bytes Rx: 120
TX pkts: Rx 2 Pkts: 2
Static NAT - Transparent tunnel (NAT/PAT) on the VPN Client
- The VPN Client connections are functioning normally. Even if the host Staticly using a NAT VPN Client does not need UDP encapsulation it is always used if your connection of the VPN Client profile is configured to use (tab in the Transport of the client software)
Username: Index: 26
Public IP address 10.0.1.2 assigned IP::
Protocol: IKEv1 IPsecOverNatT
IKEv1:
Tunnel ID: 26.1
The UDP Src Port: 60159 UDP Dst Port: 4500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: AES 256 hash: SHA1
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28772 seconds
Group D/H: 2
Name of the filter:
Client OS: Windows NT Client OS worm: 5.0.07.0290
IPsecOverNatT:
Tunnel ID: 26.2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 10.0.1.2/255.255.255.255/0/0
Encryption: AES 256 hash: SHA1
Encapsulation: Tunnel
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28772 seconds
Idle Time Out: 30 Minutes idling left: 29 Minutes
TX Bytes: 1200 bytes Rx: 1200
TX pkts: Rx 20 Pkts: 20
Static NAT - Transparent tunnel on the VPN Client (IPsec, TCP)
- The VPN Client connections are functioning normally. Even if the host Staticly using a NAT VPN Client does not need TCP encapsulation it is always used if your connection of the VPN Client profile is configured to use (tab in the Transport of the client software)
Username: Index: 27
Public IP address 10.0.1.2 assigned IP::
Protocol: IKEv1 IPsecOverTCP
IKEv1:
Tunnel ID: 27.1
The UDP Src Port: 61575 UDP Dst Port: 500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: AES 256 hash: SHA1
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28790 seconds
Group D/H: 2
Name of the filter:
Client OS: Windows NT Client OS worm: 5.0.07.0290
IPsecOverTCP:
Tunnel ID: 27.2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 10.0.1.2/255.255.255.255/0/0
Encryption: AES 256 hash: SHA1
Encapsulation: Tunnel TCP Src Port: 61575
The TCP Dst Port: 10000
Generate a new key Int (T): 28800 seconds given to the key Left (T): 28790 seconds
Idle Time Out: 30 Minutes idling left: 30 Minutes
TX Bytes: 120 bytes Rx: 120
TX pkts: Rx 2 Pkts: 2
VPN device with a public IP address directly connected (as a customer VPN) to an ASA
Username: Index: 491
Assigned IP: 172.31.1.239 public IP address:
Protocol: IPsec IKE
IKE:
Tunnel ID: 491.1
The UDP Src Port: 500 UDP Dst Port: 500
IKE Neg Mode: Aggressive Auth Mode: preSharedKeys
Encryption: 3DES hash: SHA1
Generate a new key Int (T): 86400 seconds given to the key Left (T): 71016 seconds
Group D/H: 2
Name of the filter:
IPsec:
Tunnel ID: 491.2
Local addr: 0.0.0.0/0.0.0.0/0/0
Remote addr: 172.31.1.239/255.255.255.255/0/0
Encryption: AES128 hash: SHA1
Encapsulation: Tunnel
Generate a new key Int (T): 28800 seconds given to the key Left (T): 12123 seconds
Generate a new key Int (D): 4608000 K-bytes given to the key Left (D): 4607460 K-bytes
Idle Time Out: 0 Minutes idling left: 0 Minutes
TX Bytes: bytes 3767854 Rx: 7788633
TX pkts: 56355 Pkts Rx: 102824
Above are examples for your reference. I must also say that I am absolutely not an expert when it comes to virtual private networks in general. I had to learn two firewall/vpn basically on my own, as during my studies, we had no classes related to them (which was quite strange).
While I learned how to set up VPN and troubleshoot them I think I missed on the basic theory. I had plans to get the title Associates CCNA/CCNP certifications but at the moment everything is possible. Don't have the time for it.
I guess that you already go to the VPN security CCNP Exam?
Hope this helps and I hope that I didn't get anything wrong above
-Jouni
-
Tunnel VPN IPSEC Gre of the router in the branch office by Pix to the router HQ
Hi all
I tried to get this scenario to work before I put implement but am getting the error on router B.
01:05:38: % CRYPTO-6-IKMP_MODE_FAILURE: fast processing mode failed with the peer to 83.1.16.1
Here are the following details for networks
Router B
Address series 82.12.45.1/30
fast ethernet 192.168.20.1/24 address
PIX
outside the 83.1.16.1/30 interface eth0
inside 192.168.50.1/30 eth1 interface
Router
Fast ethernet (with Pix) 192.168.50.2/30 address
Loopback (A network) 192.168.100.1/24 address
Loopback (Network B) 192.168.200.1/24 address
Loopback (Network C) 192.168.300.1/24 address
Is could someone please tell me where im going wrong as I read the explanation of the error and it points to political unmaching. This has confused me like the two counterparts seem to have the same settings.
Config router B
======================
name of host B
!
Select the 5 secret goat.
!
username 7 privilege 15 password badger badger
iomem 15 memory size
IP subnet zero
!
!
no ip domain-lookup
IP - test.local domain name
!
property intellectual ssh delay 30
property intellectual ssh authentication-2 retries
!
crypto ISAKMP policy 5
md5 hash
preshared authentication
Group 2
ISAKMP crypto key VPN2VPN address 83.1.16.1
!
86400 seconds, duration of life crypto ipsec security association
!
Crypto ipsec transform-set esp - esp-md5-hmac VPN
!
crypto map 5 VPN ipsec-isakmp
defined by peer 83.1.16.1
PFS group2 Set
match address VPN
!
call the rsvp-sync
!
interface Loopback10
20.0.2.2 the IP 255.255.255.255
!
interface Tunnel0
bandwidth 1544000
20.0.0.1 IP address 255.255.255.0
source of Loopback10 tunnel
tunnel destination 20.0.2.1
!
interface FastEthernet0/0
Description * inside the LAN CONNECTION *.
address 192.168.20.1 255.255.255.0
IP nat inside
automatic duplex
automatic speed
!
interface Serial0/0
Description * INTERNET ACCESS *.
IP 88.12.45.1 255.255.255.252
NAT outside IP
VPN crypto card
!
interface FastEthernet0/1
no ip address
Shutdown
automatic duplex
automatic speed
!
Router eigrp 1
network 20.0.0.0
No Auto-resume
!
overload of IP nat inside source list NAT interface Serial0/0
IP classless
IP route 0.0.0.0 0.0.0.0 Serial0/0
no ip address of the http server
!
!
NAT extended IP access list
deny ip 192.168.20.0 0.0.0.255 192.168.200.0 0.0.0.255
deny ip 192.168.20.0 0.0.0.255 192.168.300.0 0.0.0.255
deny ip 192.168.20.0 0.0.0.255 192.168.100.0 0.0.0.255
ip licensing 192.168.20.0 0.0.0.255 any
list of IP - VPN access scope
permit ip host 20.0.2.2 20.0.2.1
!Config PIX
====================
PIX Version 7.2 (4)
!
pixfirewall hostname
names of
name 20.0.2.2 B_LOOP
name 88.12.45.1 B_WANIP
!
interface Ethernet0
Description * LINK to ISP *.
nameif outside
security-level 0
IP 83.1.16.1 255.255.255.252
!
interface Ethernet1
Description * LINK TO LAN *.
nameif inside
security-level 100
IP 192.168.50.1 255.255.255.252
!
passive FTP mode
the ROUTER_LOOPS object-group network
network-object 20.0.2.0 255.255.255.252
access allowed extended VPN ip host 20.0.2.1 B_LOOP list
access-list extended SHEEP permit ip host 20.0.2.1 ROUTER_LOOPS object-group
Access ip allowed any one extended list ACL_OUT
pager lines 24
Outside 1500 MTU
Within 1500 MTU
no failover
ICMP unreachable rate-limit 1 burst-size 1
don't allow no asdm history
ARP timeout 14400
Global (1 interface external)
NAT (inside) 0 access-list SHEEP
NAT (inside) 1 192.168.50.0 255.255.255.252
NAT (inside) 1 192.168.50.0 255.255.255.0
Access to the interface inside group ACL_OUT
Route outside 0.0.0.0 0.0.0.0 83.1.16.2 1
Timeout xlate 03:00
Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00
Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown cold start
Crypto ipsec transform-set esp - esp-md5-hmac VPN
86400 seconds, duration of life crypto ipsec security association
VPN 5 crypto card matches the VPN address
card crypto VPN 5 set pfs
card crypto VPN 5 set peer B_WANIP
VPN 5 value transform-set VPN crypto card
card crypto VPN 5 defined security-association life seconds 28800
card crypto VPN outside interface
crypto isakmp identity address
crypto ISAKMP allow outside
crypto ISAKMP policy 5
preshared authentication
the Encryption
md5 hash
Group 2
life 86400
Telnet timeout 5
SSH timeout 5
Console timeout 0
tunnel-group 88.12.45.1 type ipsec-l2l
IPSec-attributes tunnel-group 88.12.45.1
pre-shared-key *.
!
class-map inspection_default
match default-inspection-traffic
!When you create a GRE tunnel between two routers, there should be a routing decision to reach the Remote LAN through local (rather than exit directly the physical interface) tunnel interface.
This could be accomplished by EIGRP, but you can check if the adjacency is built.
As a test, what happens if you add a static route saying (reach remote LAN, sending traffic to the tunnel interface).
Check if the GRE tunnel comes up with sh interface tunnel
Federico.
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