Without SSL or SVC - Tunnel Mode client?

Hello

I have a really quick question. When you enable SSL VPN should I choose between SSL without client or Client SSL VPN. IE, the portal with (CIFS, Telnet, Citrix) or the complete network SSL access client.

It seems that it is one of the other of this doc, but I thought it would be nice to have the SSL VPN client with the ability to click on a link for full network access.

Any ideas?

Here is the document that I've referenced.

http://www.Cisco.com/en/us/products/ps6120/products_configuration_example09186a00806ea271.shtml

Best regards

You can have without client only, client + anyconnect (click on the link on the portal without client anyconnect) or anyconnect only. It all depends on how you configure the group policy on the ASA.

Kind regards

Roman

Tags: Cisco Security

Similar Questions

SSL VPN Tunnel mode, "page cannot be found" - Urgent!

Hi experts,

I am trying to configure a tunnel mode SSL VPN (the one who downloads the client to your PC to give full access to the network) and the urgent need of your help, sorry for the emergency, but my client needs this as soon as possible and my wife due our second baby from last Monday so time is of the essence

I get an invalid certificate Internet explore when I navigate to http://publicip/remote, which is very well that it is a self cert signed, but when I click on 'continue' I get an error "page cannot be found".

Did I miss something in the config or if I'm away from Flash (web files) files?

I have attached the config but also a worm and dir flash sh.

I ran the SDM to configure and as such he has inserted an ACL of the IP allowed the host publicip, I don't like this good and want to remove it, can advise you?

Thank you very much

Dave

Hello

Try to change this command in your context:

Gateway gateway_1 domain domain.com

TO

Gateway gateway_1

'domain' indicated that here is not real estate, but a part after the URL. With the configuration you have, you will need to connect to the following url for a Web page:

https://publicip/domain.com

Which is probably why you get an error when you simply browse to https://publicip

-Jason

[SOLVED] Native Iphone4s Cisco VPN client cannot establish the tunnel (victory clients do)

Hello

IPhone 4 s last IOS5 V 5.1.1 installed

I'm not able to make the native IPSEC VPN connection upset my company Cisco 877

Instead, all my computer laptop and netbook with Cisco VPN Client work installed fine when they connect remotely to society 877

Turn debugging 877, it seems Iphone successfully passes the 1 connection ike (actually Iphone wonder phase2 user/pass), but it hung to phase2 give me the error 'Negotiation with the VPN server has no' back

An idea or a known issue on this?

This is how I configured my VPN 877 part:

R1 (config) # aaa new-model

R1 (config) # aaa authentication default local connection

R1 (config) # aaa authentication login vpn_xauth_ml_1 local

R1 (config) # aaa authentication login local sslvpn

R1 (config) # aaa authorization network vpn_group_ml_1 local

R1 (config) # aaa - the id of the joint session

Crypto isakmp policy of R1 (config) # 1

R1(config-ISAKMP) # BA 3des

# Preshared authentication R1(config-ISAKMP)

Group R1(config-ISAKMP) # 2

R1(config-ISAKMP) #.

R1(config-ISAKMP) #crypto isakmp policy 2

R1(config-ISAKMP) # BA 3des

Md5 hash of R1(config-ISAKMP) #.

# Preshared authentication R1(config-ISAKMP)

Group R1(config-ISAKMP) # 2

Output R1(config-ISAKMP) #.

R1 (config) # CUSTOMER - VPN crypto isakmp client configuration group

R1(config-ISAKMP-Group) # key xxxxxxxx

R1(config-ISAKMP-Group) # 192.168.0.1 dns

R1(config-ISAKMP-Group) # VPN - pool

ACL R1(config-ISAKMP-Group) # 120

R1(config-ISAKMP-Group) max-users # 5

Output R1(config-ISAKMP-Group) #.

R1 (config) # ip local pool VPN-pool 192.168.0.20 192.168.0.25

R1 (config) # crypto ipsec transform-set encrypt-method-1 esp-3des esp-sha-hmac

R1 (config) # crypto ipsec VPN-profile-1 profile

R1(IPSec-Profile) # set the transform-set encrypt method 1

Tunnel type interface virtual-Template2 R1 (config) #.

R1(Config-if) # ip unnumbered FastEthernet0/0

R1(Config-if) # tunnel mode ipsec ipv4

Ipsec protection tunnel R1(Config-if) # VPN - profile - 1 profile

Profile of R1 (config) # isakmp crypto vpn-ike-profile-1

R1(conf-ISA-Prof) # match group identity CUSTOMER VPN

R1(conf-ISA-Prof) # vpn_xauth_ml_1 list client authentication

R1(conf-ISA-Prof) # isakmp authorization list vpn_group_ml_1

R1(conf-ISA-Prof) # client configuration address respond

R1(conf-ISA-Prof) virtual-model # 2

Then run AccessList 120 for desired traffic ("access-list 120 now allows ip any any")

I have configured my VPN Cisco "CUSTOMER-VPN" clients and relative password

Whenever they connect, they are prompted for the password and username phase2 then they join the VPN with an IP address from local subnet released.

With the same parameters required and confirmed in section ipsec VPN Iphone it does not work.

It's 877 isakmp debug output after that Iphone wonder name of user and password (then I suppose that phase 1 completed):

* 14:29:30.731 May 19: ISAKMP (0:2081): received 151.38.197.143 packet 500 Global 500 (R) sport dport CONF_XAUTH

* 14:29:30.735 May 19: ISAKMP: (2081): responsible for operation of 151.38.197.143 of treatment. Message ID =-1427983983

* 14:29:30.735 May 19: ISAKMP: Config payload RESPONSE

* 14:29:30.735 May 19: ISAKMP/xauth: response XAUTH_USER_NAME_V2 attribute

* 14:29:30.735 May 19: ISAKMP/xauth: response XAUTH_USER_PASSWORD_V2 attribute

* 14:29:30.735 May 19: ISAKMP: (2081): node-1427983983 error suppression FALSE reason "made with Exchange of request/response xauth.

* 14:29:30.735 May 19: ISAKMP: (2081): entry = IKE_MESG_FROM_PEER, IKE_CFG_REPLY

* 14:29:30.735 May 19: ISAKMP: (2081): former State = new State IKE_XAUTH_REQ_SENT = IKE_XAUTH_AAA_CONT_LOGIN_AWAIT

* 14:29:30.743 May 19: ISAKMP: node set 1322685842 to CONF_XAUTH

* 19 May 14:29:30.747: ISAKMP: (2081): launch peer 151.38.197.143 config. ID = 1322685842

* 19 May 14:29:30.747: ISAKMP: (2081): lot of 151.38.197.143 sending my_port 500 peer_port 500 (R) CONF_XAUTH

* 14:29:30.747 May 19: ISAKMP: (2081): sending a packet IPv4 IKE.

* 14:29:30.747 May 19: ISAKMP: (2081): entry = IKE_MESG_FROM_AAA, IKE_AAA_CONT_LOGIN

* 14:29:30.747 May 19: ISAKMP: (2081): former State = new State IKE_XAUTH_AAA_CONT_LOGIN_AWAIT = IKE_XAUTH_SET_SENT

* 14:29:31.299 May 19: ISAKMP (0:2081): received 151.38.197.143 packet 500 Global 500 (R) sport dport CONF_XAUTH

* 14:29:31.299 May 19: ISAKMP: (2081): responsible for operation of 151.38.197.143 of treatment. Message ID = 1322685842

* 14:29:31.299 May 19: ISAKMP: Config payload ACK

* 19 May 14:29:31.303: ISAKMP: (2081): XAUTH ACK processed

* 14:29:31.303 May 19: ISAKMP: (2081): error suppression node 1322685842 FALSE basis "Mode of Transaction.

* 14:29:31.303 May 19: ISAKMP: (2081): talking to a customer of the unit

* 14:29:31.303 May 19: ISAKMP: (2081): entry = IKE_MESG_FROM_PEER, IKE_CFG_ACK

* 14:29:31.303 May 19: ISAKMP: (2081): former State = new State IKE_XAUTH_SET_SENT = IKE_P1_COMPLETE

* 14:29:31.303 May 19: ISAKMP: (2081): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

* 14:29:31.303 May 19: ISAKMP: (2081): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

* 19 May 14:29:31.303: IPSEC (key_engine): had an event of the queue with 1 KMI message (s)

* 14:29:31.315 May 19: ISAKMP: (2081): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

* 14:29:31.315 May 19: ISAKMP: (2081): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

* 14:29:31.623 may 19: ISAKMP (0:2081): received 151.38.197.143 packet 500 Global 500 (R) sport dport QM_IDLE

* 14:29:31.623 may 19: ISAKMP: node set-851463821 to QM_IDLE

* 14:29:31.623 may 19: ISAKMP: (2081): responsible for operation of 151.38.197.143 of treatment. Message ID =-851463821

* 14:29:31.623 may 19: ISAKMP: Config payload REQUEST

* 14:29:31.623 may 19: ISAKMP: (2081): verification of claim:

* 14:29:31.623 may 19: ISAKMP: IP4_ADDRESS

* 14:29:31.623 may 19: ISAKMP: IP4_NETMASK

* 14:29:31.623 may 19: ISAKMP: IP4_DNS

* 14:29:31.623 may 19: ISAKMP: IP4_NBNS

* 14:29:31.623 may 19: ISAKMP: ADDRESS_EXPIRY

* 14:29:31.623 may 19: ISAKMP: APPLICATION_VERSION

* 14:29:31.623 may 19: ISAKMP: MODECFG_BANNER

* 14:29:31.623 may 19: ISAKMP: domaine_par_defaut

* 14:29:31.623 may 19: ISAKMP: SPLIT_DNS

* 14:29:31.623 may 19: ISAKMP: SPLIT_INCLUDE

* 14:29:31.623 may 19: ISAKMP: INCLUDE_LOCAL_LAN

* 14:29:31.623 may 19: ISAKMP: PFS

* 14:29:31.623 may 19: ISAKMP: MODECFG_SAVEPWD

* 14:29:31.623 may 19: ISAKMP: FW_RECORD

* 14:29:31.623 may 19: ISAKMP: serveur_sauvegarde

* 14:29:31.623 may 19: ISAKMP: MODECFG_BROWSER_PROXY

* 14:29:31.627 May 19: ISAKMP/author: author asks for CUSTOMER-VPNsuccessfully group AAA

* 14:29:31.627 May 19: ISAKMP: (2081): entry = IKE_MESG_FROM_PEER, IKE_CFG_REQUEST

* 14:29:31.627 May 19: ISAKMP: (2081): former State = new State IKE_P1_COMPLETE = IKE_CONFIG_AUTHOR_AAA_AWAIT

* 14:29:31.627 May 19: ISAKMP: (2081): attributes sent in the message:

* 19 May 14:29:31.627: address: 0.2.0.0

* 19 May 14:29:31.627: ISAKMP: (2081):address of 192.168.0.21 assignment

* 14:29:31.627 May 19: ISAKMP: sending private address: 192.168.0.21

* 14:29:31.627 May 19: ISAKMP: send the subnet mask: 255.255.255.0

* 14:29:31.631 May 19: ISAKMP: sending IP4_DNS server address: 192.168.0.1

* 14:29:31.631 May 19: ISAKMP: sending ADDRESS_EXPIRY seconds left to use the address: 3576

* 14:29:31.631 May 19: ISAKMP: string APPLICATION_VERSION sending: Cisco IOS software, software C870 (C870-ADVIPSERVICESK9-M), Version 12.4 (15) T7, VERSION of the SOFTWARE (fc3)

Technical support: http://www.cisco.com/techsupport

Copyright (c) 1986-2008 by Cisco Systems, Inc.

Updated Friday 14 August 08 07:43 by prod_rel_team

* 14:29:31.631 May 19: ISAKMP: split shipment include the name Protocol 120 network 0.0.0.0 mask 0.0.0.0 0 src port 0, port 0 DST

* 14:29:31.631 May 19: ISAKMP: sending save the password answer value 0

* 19 May 14:29:31.631: ISAKMP: (2081): respond to peer 151.38.197.143 config. ID =-851463821

* 19 May 14:29:31.631: ISAKMP: (2081): lot of 151.38.197.143 sending my_port 500 peer_port 500 (R) CONF_ADDR

* 14:29:31.631 May 19: ISAKMP: (2081): sending a packet IPv4 IKE.

* 14:29:31.631 May 19: ISAKMP: (2081): node-851463821 error suppression FALSE reason "error no.".

* 14:29:31.631 May 19: ISAKMP: (2081): talking to a customer of the unit

* 14:29:31.631 May 19: ISAKMP: (2081): entry = IKE_MESG_FROM_AAA, IKE_AAA_GROUP_ATTR

* 14:29:31.631 May 19: ISAKMP: (2081): former State = new State IKE_CONFIG_AUTHOR_AAA_AWAIT = IKE_P1_COMPLETE

* 14:29:31.635 May 19: ISAKMP: (2081): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

* 14:29:31.635 May 19: ISAKMP: (2081): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

Here the Iphone remains unused for a few seconds...

* 14:29:48.391 May 19: ISAKMP (0:2081): received 151.38.197.143 packet 500 Global 500 (R) sport dport QM_IDLE

* 14:29:48.391 May 19: ISAKMP: node set 1834509506 to QM_IDLE

* 19 May 14:29:48.391: ISAKMP: (2081): HASH payload processing. Message ID = 1834509506

* 19 May 14:29:48.391: ISAKMP: (2081): treatment of payload to DELETE. Message ID = 1834509506

* 14:29:48.391 May 19: ISAKMP: (2081): peer does not paranoid KeepAlive.

* 14:29:48.395 May 19: ISAKMP: (2081): peer does not paranoid KeepAlive.

* 14:29:48.395 May 19: ISAKMP: (2081): removal of HIS right State 'No reason' (R) QM_IDLE (post 151.38.197.143)

* 14:29:48.395 May 19: ISAKMP: (2081): error suppression node 1834509506 FALSE reason 'informational (en) State 1.

* 19 May 14:29:48.395: IPSEC (key_engine): had an event of the queue with 1 KMI message (s)

* 19 May 14:29:48.395: IPSEC (key_engine_delete_sas): rec would notify of ISAKMP

* 19 May 14:29:48.395: IPSEC (key_engine_delete_sas): remove all SAs shared with peer 151.38.197.143

* 14:29:48.395 May 19: ISAKMP: node set-1711408233 to QM_IDLE

* 19 May 14:29:48.395: ISAKMP: (2081): lot of 151.38.197.143 sending my_port 500 peer_port 500 (R) QM_IDLE

* 14:29:48.395 May 19: ISAKMP: (2081): sending a packet IPv4 IKE.

* 14:29:48.399 May 19: ISAKMP: (2081): purge the node-1711408233

* 14:29:48.399 May 19: ISAKMP: (2081): entry = IKE_MESG_INTERNAL, IKE_PHASE1_DEL

* 14:29:48.399 May 19: ISAKMP: (2081): former State = new State IKE_P1_COMPLETE = IKE_DEST_SA

* 14:29:48.399 May 19: ISAKMP: (2081): removal of HIS right State 'No reason' (R) QM_IDLE (post 151.38.197.143)

* 14:29:48.399 May 19: ISAKMP: (0): cannot decrement IKE Call Admission Control incoming_active stat because he's already 0.

* 14:29:48.399 May 19: ISAKMP (0:2081): return address 192.168.0.21 to pool

* 14:29:48.399 May 19: ISAKMP: Unlocking counterpart struct 0 x 84084990 for isadb_mark_sa_deleted(), count 0

* 14:29:48.399 May 19: ISAKMP: return address 192.168.0.21 to pool

* 14:29:48.399 May 19: ISAKMP: delete peer node by peer_reap for 151.38.197.143: 84084990

* 14:29:48.399 May 19: ISAKMP: return address 192.168.0.21 to pool

* 14:29:48.403 May 19: ISAKMP: (2081): node-1427983983 error suppression FALSE reason 'IKE deleted.

* 14:29:48.403 May 19: ISAKMP: (2081): error suppression node 1322685842 FALSE reason 'IKE deleted.

* 14:29:48.403 May 19: ISAKMP: (2081): node-851463821 error suppression FALSE reason 'IKE deleted.

* 14:29:48.403 May 19: ISAKMP: (2081): error suppression node 1834509506 FALSE reason 'IKE deleted.

* 14:29:48.403 May 19: ISAKMP: (2081): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

* 14:29:48.403 May 19: ISAKMP: (2081): former State = new State IKE_DEST_SA = IKE_DEST_SA

* 19 May 14:29:48.403: IPSEC (key_engine): had an event of the queue with 1 KMI message (s)

It seems 877 comes even to assign a local ip address of LAN for Iphone (192.168.0.21) but then something goes wrong...

Any idea or suggestion on this?

Thank you very much

Hi Federico,.

Please let us know.

Please mark this message as answered while others will be able to learn the lessons.

Thank you.

Portu.

I can connect with the Administrators account without starting windows in safe mode in win xp pro sp3

I can connect with the Administrators account without starting windows in safe mode and if yes, how?

If I ca not, how can I load the graphics in safe mode drivers as all graphical interfaces are not displayed correctly.

Thank you, Andre

If XP Pro using the Welcome screen, press CTRL + ALT + DELETE to bring up the classic login box. In the connection box, type the administrator user name and password. Boulder computer Maven
Most Microsoft Valuable Professional

transport mode, AH in IPSec AH tunnel mode

Hello world.

I read about Ipsec that contains two main protocols among others: AH and ESP.

For now, I'm focused on AH only. I read the theory on AH and two modes AH may work: mode and tunnel Transport mode.

(201.201.201.1) h1 - R1 (199.199.199.1) s0 - s0 (199.199.199.2) R2 - H2 (200.200.200.2)

I would like to implement the following:

Whenever R1 receives the ip packet to the H1 to H2, R1 must use AH in transport mode before it sends the packet to R2, in the same way, R2 must use AH in transport of packets sent by H2 H1, before mailing in R1.

I just need an example on how we can configure R1 and R2 to accomplish the task above...

Thanks for your help and have a great day.

.

Hi Sara,.

Please find the example configuration for the GRE IPsec VPN using the mode of transport.

(201.201.201.1) h1 - R1 (199.199.199.1) s0 - s0 (199.199.199.2) R2 - H2 (200.200.200.2)

You can use the ACL to restrict to only the ports required for the vpn as udp 500, ah, gre and 4500 and you can check. I hope this helps.

Also, you can find the site mentioned described to better understand the differences between the modes of transport or tunnel.

R1:

===

version 12.4

!

hostname R1

!

IP cef

!

!

crypto ISAKMP policy 10

preshared authentication

address key crypto isakmp 199.199.199.2 CISCO

!

Crypto ipsec transform-set esp-3des esp-sha-hmac MyTransSet

transport mode

!

Profile of crypto ipsec MyProfile

game of transformation-MyTransSet

!

interface Tunnel0

IP 10.10.10.1 255.255.255.252

tunnel source 199.199.199.1

tunnel destination 199.199.199.2

ipv4 ipsec tunnel mode

Profile of tunnel MyProfile ipsec protection

!

interface serial0

199.199.199.1 IP address 255.255.255.0

automatic duplex

automatic speed

!

IP route 0.0.0.0 0.0.0.0 199.199.199.2

!

Line con 0

line to 0

line vty 0 4

!

!

end

======================================================================

R2

=====

version 12.4

!

hostname R2

!

!

!

IP cef

!

!

crypto ISAKMP policy 10

preshared authentication

address key crypto isakmp 199.199.199.1 CISCO

!

!

Crypto ipsec transform-set esp-3des esp-sha-hmac MyTransSet

transport mode

!

Profile of crypto ipsec MyProfile

game of transformation-MyTransSet

!

interface Tunnel0

10.10.10.2 IP address 255.255.255.252

tunnel source 199.199.199.2

199.199.199.1 tunnel destination

ipv4 ipsec tunnel mode

Profile of tunnel MyProfile ipsec protection

!

interface serial0

IP 199.199.199.2 255.255.255.0

automatic duplex

automatic speed

!

IP route 0.0.0.0 0.0.0.0 199.199.199.1

!

!

Line con 0

line to 0

line vty 0 4

!

!

end

Please assess whether the information provided is useful.

By

Knockaert

IPsec DMVPN tunnel mode

"Front of Cisco IOS release 12.3 (6) and 12.3 (7) T, for the spoke routers participate in a DMVPN network, they had to use tunnel mode IPSec." is indicated in the following doc:

http://CCO/en/us/products/SW/iosswrel/ps1839/products_feature_guide09186a0080110ba1.html#wp1085369

But I tried the mode of transport, he sees work very well. I use 12.2 (15) T. is it supposed to work? If not, why?

Thank you

The restriction you are referring is only in the case of your shelves DMVPN is behind NAT devices. If they are not behind NAT devices they can use a tunnel or transport mode correctly.

GET VPN tunnel mode and transport mode multicast

Hello

I really don't understand why GET VPN uses a tunnel for packets in multicast mode:

Examples of a @multicast = 239.0.0.37:

(1) here a package to GET VPN: | 239.0.0.37 | ESP | 239.0.0.37 | transport layer. Payload: : This way, he uses (two IP headers) IPSec tunnel mode.

(2) here a package that I imagine to be better: | 239.0.0.37 | ESP | transport layer. Payload: : Mode of transport IPsec, 1 registered IP header = fewer bytes used.

In both cases, the IP header cannot be secured, cause GET VPN Tunnel using the same multicast IP header (this is why it works so well...)

I don't understand why Cisco uses model IPsec in tunnel mode to encapsulate packets instead of the mode of transport. I can't find a descent of answer to this question... Maybe my question is not relevant?

Thanks for your replies.

Concerning

Stone,

I quote DIG it
```
It is worth noting that tunnel header preservation seems very similar to IPsec transport mode.
However, the underlying IPsec mode of operation with GET VPN is IPsec tunnel mode. While
IPsec transport mode reuses the original IP header and therefore adds less overhead to an IP
packet (5% for IMIX packets; 1% for 1400-byte packets), IPsec transport mode suffers from
fragmentation and reassembly limitations when used together with Tunnel Header Preservation
and must not be used in GET VPN deployments where encrypted or clear packets might require
fragmentation.
```
In practice, reassambly concerns and initially odd behaviors with some encryption engines caused the recommendation to be tunnel mode.

That being said, for large packages (where fresh important generals) overhead costs are minimal. For small packages (voice), the overhead is large, but the packet (after encapsulation) size should not be a problem.

M.

VTI and NAT IPsec Tunnel mode

Hello world

I don't know that this subject has been beaten to death already on these forums. Nevertheless, I have yet to find the exact solution, I need. I have three machines, two routers and an ASA. One of the routers sits behind the ASA and I have a GRE VTI configuration between two routers with ASA NATting, one of the routers to a public IP address. I can guarantee the tunnel mode IPsec transport, but as soon as I pass in tunnel mode, the communication fails even if the SA is established.

Please see the configuration below and tell me what I am missing please. I changed the IP addresses for security.

The following configuration works when transform-set is set to the mode of transport

Note: The Router 2 is sitting behind the ASA and is coordinated to the public IP 200.1.1.2

Router 1:

Crypto ipsec transform-set SEC esp - aes 256 esp-md5-hmac

tunnel mode

!

Crypto ipsec IPSEC profile

transformation-SEC game

!

!

interface tunnels2

IP 172.16.1.1 255.255.255.252

tunnel source 200.1.1.1

tunnel destination 200.1.1.2

Ipsec IPSEC protection tunnel profile

!

SECURITYKEY address 200.1.1.2 isakmp encryption key

!

crypto ISAKMP policy 1

BA aes 256

md5 hash

preshared authentication

Group 2

ASA:

public static 200.1.1.2 (indoor, outdoor) 10.1.1.1 netmask 255.255.255.255

Router 2:

interface Tunnel121

address 172.16.1.2 IP 255.255.255.252

IP nat inside

IP virtual-reassembly

tunnel source 10.1.1.1

tunnel destination 200.1.1.1

Ipsec IPSEC protection tunnel profile

!

Crypto ipsec transform-set SEC esp - aes 256 esp-md5-hmac

tunnel mode

!

Crypto ipsec IPSEC profile

transformation-SEC game

!

SECURITYKEY address 200.1.1.1 isakmp encryption key

!

crypto ISAKMP policy 2

BA aes 256

md5 hash

preshared authentication

Group 2

There is no access-lists on the SAA except to allow a whole ICMP

I am very grateful for any guidance you can provide in advance guys.

Hello

MTU, and the overhead was in this case.

You changed encapsulating ipv4 instead of LIKING - which have less overhead (no GRE inside). This is why it started working.

If you want to continue using GRE you decrease the MTU as described.

---

Michal

IPsec VPN between two routers - mode ESP Transport and Tunnel mode

Hi experts,

I have this question about the Transport mode and Tunnel mode for awhile.

Based on my understanding of 'Transport' mode is not possible because you always original "internal" private in the IP headers or IP addresses. They are always different as public IP on interfaces enabled with Crypto Card addresses. When encapsulated in the VPN tunnel, the internal IP addresses must be included or the remote VPN router won't know where to forward the packet.

To test, I built a simple GNS3 with three routers laboratory. R1 and R3 are configured as VPN routers and the R2 must simulate Internet.

My configs are also very basic. The R2 is routing between 1.1.1.0/24 and 2.2.2.0/24. It is defined as the gateway of R1 and R3.

R1:

crypto ISAKMP policy 100
BA aes
preshared authentication
Group 2
ISAKMP crypto key 123456 address 2.2.2.2
!
Crypto ipsec transform-set ESP_null null esp esp-sha-hmac
!
10 map ipsec-isakmp crypto map
defined peer 2.2.2.2
transformation-ESP_null game
match address VPN

!

list of IP - VPN access scope
ip permit 192.168.1.0 0.0.0.255 10.0.0.0 0.0.0.255
!

R3:

crypto ISAKMP policy 100
BA aes
preshared authentication
Group 2
ISAKMP crypto key 123456 address 1.1.1.2
!
!
Crypto ipsec transform-set ESP_null null esp esp-sha-hmac
!
10 map ipsec-isakmp crypto map
defined peer 1.1.1.2
transformation-ESP_null game
match address VPN

!

list of IP - VPN access scope
Licensing ip 10.0.0.0 0.0.0.255 192.168.1.0 0.0.0.255

I configured transform-"null" value, while it will not encrypt the traffic.

Then I tried the two 'transport' mode and mode "tunnel". I ping a host in the internal network of the R1 to another host in the internal network of the R3. I also tried 'telnet'. I also captured packets and carefully compared in both modes.

Packets encapsulated in exactly the same way!

It's just SPI + sequence No. + + padding

I will attach my screenshots here for you guys to analyze it. I would be grateful for any explanation. I confused maybe just when it comes to the NAT...

I guess my next step is to check if the two modes to make the difference when the GRE is used.

Thank you

Difan

Hi Difan,

As you point out the mode of transport is not always applicable (i.e. applicable if IP source and destination is equal to corresnpoding proxy IDs).

A typical scenario in this mode of transport is used:

-Encryption between two hosts

-GRE tunnels

-L2TP over IPsec

Even if you set "transport mode" this does not mean that it will be used. IOS routers and I blieve also ASA will perform backup even if the mode of transport is configured but does not apply in tunnel mode.

I can take a look at your traces to sniff, but all first can you please check if you transport mode on your ipsec security associations? "See the crypto ipsec his" exit you will show the tunnel or transport mode.

HTH,

Marcin

Without SSL on Apps Tier DNS load balancing

Dear all,
I am to set up load balancing DNS (non-shared file system) for my 2 nodes of level Apps. I followed the id of the note using Load-balance with Oracle E-Business Suite Release 12 [380489.1 ID] section 2.4, but the question is. my level Apps is not configured with SSL. Please tell me how to configure the DNS without SSL load balancing so that I can connect with http://

Kind regards
Aleem

You can use the same instructions - replace https with http and 443 with your port number.

HTH
Srini

Groups without SSL VPN client

Greetings. I currently have an ASA5520 in place running 8.0 (2) IOS. We have configured a clientless SSL VPN portal that we currently use as a 'test '. We try to solve the question deals with the use of the SSL VPN connection page groups. Currently, the ASA is set to authenicate names of username/password to a Microsoft Windows 2003 using IAS (RADIUS) server. It works very well.

What we want to do, is to "lock" the user account to a group alias in the VPN SSL ASA login page. For example, our SSL VPN connection page displays two options for 'Group', 'sales and 'tech'. In its current form, a sales user can select one of the displayed groups and always be authenicated. Anyway is to deny the login information if a user does not select the appropriate menu GROUP drop-down? It would certainly help to ensure that users choose the right GROUP in the menu dropdown.

Any information would be greatly appreciated.

Joe

In order to put the user in the appropriate group, set the attribute RADIUS 25 as OU = ASAGroupPolicyName. then try the locking of group control to lock the users.

http://www.Cisco.com/en/us/docs/security/ASA/asa72/command/reference/gh_72.html

A Site with IPsec without restoring a new tunnel

Hello, I have a question about IPSec S2S.

Network.PNG

In this topoloy, I would like to that IPSec S2S between 172.21.0.0/24 and 172.22.0.0/24.

The serial line is the first priority and route on ISP is the second priority for routing.

The question is how can I create the IPsec Site to Site connection without restore when the routing path changes?

The AR configuration:

!
version 15.1
no service the timestamps don't log datetime msec
no service timestamps debug datetime msec
no password encryption service
!
hostname AR
!
!
!
!
!
!
!
!
no ip cef
No ipv6 cef
!
!
!
username cisco password 0 BR
!
!
license udi pid CISCO2901/K9 sn FTX1524YO05
licence start-up module c2900 technology-package securityk9
!
!
!
crypto ISAKMP policy 10
BA 3des
md5 hash
preshared authentication
Group 2
!
cisco key crypto isakmp 10.0.0.2 address
address of cisco crypto isakmp 200.200.200.2 keys
!
!
!
Crypto ipsec transform-set esp-3des esp-sha-hmac TS
!
CMAP 10 ipsec-isakmp crypto card
defined peer 10.0.0.2
defined by peer 200.200.200.2
game of transformation-TS
match the vpn address
!
!
!
!
!
!
pvst spanning-tree mode
!
!
!
!
!
!
interface GigabitEthernet0/0
IP 100.100.100.2 255.255.255.252
automatic duplex
automatic speed
card crypto WCPA
!
interface GigabitEthernet0/1
IP 172.21.0.254 255.255.255.0
automatic duplex
automatic speed
!
interface Serial0/0/0
the IP 10.0.0.1 255.255.255.252
encapsulation ppp
Chap PPP authentication protocol
2000000 clock frequency
card crypto WCPA
!
interface Serial0/0/1
no ip address
2000000 clock frequency
Shutdown
!
interface Vlan1
no ip address
Shutdown
!
router ospf 1
Log-adjacency-changes
Network 10.0.0.0 0.0.0.3 area 0
network 172.21.0.0 0.0.0.255 area 0
!
router RIP
version 2
network 100.0.0.0
network 172.21.0.0
No Auto-resume
!
IP classless
!
IP flow-export version 9
!
!
list of IP - vpn access scope
IP 172.21.0.0 allow 0.0.0.255 172.22.0.0 0.0.0.255
!
!
!
!
!
Line con 0
!
line to 0
!
line vty 0 4
opening of session
!
!
!
end

Configuration of BR:

!
version 15.1
no service the timestamps don't log datetime msec
no service timestamps debug datetime msec
no password encryption service
!
hostname BR
!
!
!
!
!
!
!
!
no ip cef
No ipv6 cef
!
!
!
Cisco spends 0 username AR
!
!
license udi pid CISCO2901/K9 sn FTX1524L63A
licence start-up module c2900 technology-package securityk9
!
!
!
crypto ISAKMP policy 10
BA 3des
md5 hash
preshared authentication
Group 2
!
cisco key crypto isakmp 10.0.0.1 address
address of cisco crypto isakmp 100.100.100.2 keys
!
!
!
Crypto ipsec transform-set esp-3des esp-sha-hmac TS
!
CMAP 10 ipsec-isakmp crypto card
defined peer 10.0.0.1
defined by peer 100.100.100.2
game of transformation-TS
match the vpn address
!
!
!
!
!
!
pvst spanning-tree mode
!
!
!
!
!
!
interface GigabitEthernet0/0
IP 200.200.200.2 255.255.255.252
automatic duplex
automatic speed
card crypto WCPA
!
interface GigabitEthernet0/1
IP 172.22.0.254 255.255.255.0
automatic duplex
automatic speed
!
interface Serial0/0/0
the IP 10.0.0.2 255.255.255.252
encapsulation ppp
Chap PPP authentication protocol
card crypto WCPA
!
interface Serial0/0/1
no ip address
2000000 clock frequency
Shutdown
!
interface Vlan1
no ip address
Shutdown
!
router ospf 1
Log-adjacency-changes
Network 10.0.0.0 0.0.0.3 area 0
network 172.22.0.0 0.0.0.255 area 0
!
router RIP
version 2
network 172.22.0.0
network 200.200.200.0
No Auto-resume
!
IP classless
!
IP flow-export version 9
!
!
list of IP - vpn access scope
IP 172.22.0.0 allow 0.0.0.255 172.21.0.0 0.0.0.255
!
!
!
!
!
Line con 0
!
line to 0
!
line vty 0 4
opening of session
!
!
!
end

Thank you very much!

Although you might go this route, I wouldn't.

I would use VTI (GRE tunnels that run over IPSec) interfaces. One on the series circuit and the other on the circuit of the ISP.

You can then either use GRE KeepAlive to detect which tunnels are in place and use static routes or dynamic routing as EIGRP Protocol (put a higher value of the 'bandwidth' with the 'bandwidth' command on the favorite tunnel).

Web VPN/SSL - general Split Tunnel capable?

When I look through some examples of configuration for IOS Web VPN - it seems you attract to the filling of a web page of web sites that users can go to. I would be rather thin client act as client light 4.x CVPN - divided for example tunnel with access to a resource internal resource. Is this possible with Cisco VPN Web? Also - with is WebVPN any ability of the NAC?

I'm not sure IOS SSL vpn, but on the asa webvpn, there is a complete client ssl option. With this, you can either create a tunnel, or all split tunnel and the only defined networks. I hope that answers your question.

unexpected behavior with vpn, clientless ssl and smart tunnels on ASA 5510

Hi there, hope someone can help

I am able to set up a smart tunnel for an application and everything works fine, however...

Without smart tunnel, the user must navigate the portal interface (because of how he encapsulates urls and basically acts as a proxy), it is too beautiful and good and expected behavior. If a user does not enter a URL in the portal URL entry (only enters the normal address bar) she takes them outside the clientless ssl vpn portal.

Now too the point to start a smart tunnel, URL, the user types in the normal address bar is not encapsulated in the device URL, although they are still placed through our network (and note, the intelligent application of tunnel is not the browser, which is be IE). How can I know it? sites that would be blocked by a web filter are blocked with smart on but not PVD tunnels with smart tunnel.

I need to know if this is intended behavior or not and how and why this is happening?

Thanks in advance

In my view, this is how it works. If you are referring to this doc:

https://supportforums.Cisco.com/docs/doc-6172

Smart tunnel is functioning all or nothing. Which means once you turn it on for a specific process or a specific bookmark, all your traffic for this process (and the browser you are using to open the SSL Clientless session ) will pass through the ASA.

Example: Enable option ST for a process or bookmark #1 (which connected IE used to login). Opening a separate instance of the IE browser will be all traffic through the ASA, tunnel, if the new browser window belongs to the same process. All tabs on the movement of this browser browser will be smart tunnel, even to Favorites (ie. #2 favorite) are not specifically the chip in the tunnel. You must use a different browser (ie. (FireFox) in this case, if you want some of your traffic (ie. #2 favorite) is not to be smart tunnelees.

I hope this helps.

Impossible to access them Internert through the split tunneling VPN client.

I divided tunnel configured on a PIX 515. The remote VPN client connects to the PIX very well and can ping hosts on the internal network, but cannot access the Internet. Am I missing something? My config as shown below.

In addition, I don't see the routes on the VPN client via statistics (screenshot below)

All opinions are appreciated.

Rob

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------

8.0 (3) version PIX

!

hostname PIX-to-250

enable the encrypted password xxxxx

names of

!

interface Ethernet0

nameif outside

security-level 0

IP address x.x.x.250 255.255.255.240

!

interface Ethernet1

nameif inside

security-level 100

IP 192.168.9.1 255.255.255.0

!

XXXXX encrypted passwd

passive FTP mode

DNS domain-lookup outside

DNS server-group Ext_DNS

Server name 194.72.6.57

Server name 194.73.82.242

the LOCAL_LAN object-group network

object-network 192.168.9.0 255.255.255.0

object-network 192.168.88.0 255.255.255.0

Internet_Services tcp service object-group

port-object eq www

area of port-object eq

EQ object of the https port

port-object eq ftp

EQ object of port 8080

port-object eq telnet

the WAN_Network object-group network

object-network 192.168.200.0 255.255.255.0

ACLOUT list extended access allowed object-group LOCAL_LAN udp any eq log field

ACLOUT list extended access allow icmp object-group LOCAL_LAN no matter what paper

ACLOUT list extended access permitted tcp object-group LOCAL_LAN connect to any object-group Internet_Services

access-list extended ACLIN all permit icmp any what newspaper echo-reply

access-list extended ACLIN all permit icmp any how inaccessible journal

access-list extended ACLIN allowed icmp no matter what newspaper has exceeded the time

Comment by split_tunnel_list-LAN Local access list

split_tunnel_list list standard access allowed 192.168.9.0 255.255.255.0

access-list extended SHEEP allowed object-group ip LOCAL_LAN 192.168.100.0 255.255.255.0

pager lines 24

Enable logging

Outside 1500 MTU

Within 1500 MTU

IP local pool testvpn 192.168.100.1 - 192.168.100.99

no failover

ICMP unreachable rate-limit 1 burst-size 1

don't allow no asdm history

ARP timeout 14400

Global 1 interface (outside)

NAT (inside) 0 access-list SHEEP

NAT (inside) 1 0.0.0.0 0.0.0.0

Access-group ACLIN in interface outside

ACLOUT access to the interface inside group

Route outside 0.0.0.0 0.0.0.0 195.171.252.45 1

Route inside 192.168.88.0 255.255.255.0 192.168.88.254 1

Route inside 192.168.199.0 255.255.255.0 192.168.199.254 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, uauth 0:05:00 absolute

dynamic-access-policy-registration DfltAccessPolicy

Enable http server

No snmp server location

No snmp Server contact

Server enable SNMP traps snmp authentication linkup, linkdown cold start

Crypto ipsec transform-set esp-3des esp-sha-hmac Set_1

Crypto-map dynamic outside_dyn_map 10 game of transformation-Set_1

life together - the association of security crypto dynamic-map outside_dyn_map 10 seconds 280000

Crypto-map dynamic outside_dyn_map 10 the value reverse-road

outside_map 10 card crypto ipsec-isakmp dynamic outside_dyn_map

outside_map interface card crypto outside

crypto ISAKMP allow outside

crypto ISAKMP policy 1

preshared authentication

3des encryption

sha hash

Group 2

life 43200

crypto ISAKMP policy 65535

preshared authentication

3des encryption

sha hash

Group 2

life 86400

Telnet timeout 5

SSH timeout 5

Console timeout 0

a basic threat threat detection

Statistics-list of access threat detection

internal testvpn group policy

attributes of the strategy of group testvpn

Protocol-tunnel-VPN IPSec

Split-tunnel-policy tunnelspecified

name of user testuser encrypted password xxxxxx

type tunnel-group testvpn remote access

tunnel-group testvpn General-attributes

address testvpn pool

Group Policy - by default-testvpn

testvpn group of tunnel ipsec-attributes

pre-shared-key *.

!

class-map inspection_default

match default-inspection-traffic

!

!

type of policy-card inspect dns preset_dns_map

parameters

message-length maximum 512

Policy-map global_policy

class inspection_default

inspect the preset_dns_map dns

inspect the ftp

inspect h323 h225

inspect the h323 ras

inspect the netbios

inspect the rsh

inspect the rtsp

inspect the skinny

inspect esmtp

inspect sqlnet

inspect sunrpc

inspect the tftp

inspect the sip

inspect xdmcp

inspect the icmp

!

global service-policy global_policy

context of prompt hostname

Cryptochecksum:5dcb5dcdff277e1765a9a0c366b88b9e

: end

# 250 A - PIX

You have not assigned the ACL split tunnel to your strategy.

PLS, configure the following:

attributes of the strategy of group testvpn

value of Split-tunnel-network-list split_tunnel_list

Without SSL or SVC - Tunnel Mode client?

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