IPSEC manual

Similar Questions

• IPSec-manual (without IKE on PIX 501)

  I would like to establish an SA without IKE.

  When I try the commands on the console:

  ciscopix (config) # netcampus 10 ipsec-manual crypto map

  IPSec-manual mode is not allowed in this PIX.

  Type help or '?' for a list of available commands.

  My PIX is a 501 with 6.1 (2), 50 users + 3des.

  I have not found references on this problem in the docs.

  Any tips?

  IPSec-manual is not available in the 501, only in the 506 and upward.

• card crypto access lists / problem if more than one entry?

  Access list for IPSec enabled traffic.

  I've been recently setting up a VPN between two sites and I came across the following problem:

  I wanted to install a VPN that only 2 posts from site A to site B, a class C network

  So I created a list of access as follows:

  access-list 101 permit IP 192.168.0.1 host 192.168.1.0 0.0.0.255

  access-list 101 permit IP 192.168.0.2 host 192.168.1.0 0.0.0.255

  When I applied the access list above to map (match address 101) encryption, I quickly realized that only the first host (192.168.0.1) was successfully encrypted beeing while the other could not. I've been geeting on ipsec debugging errors saying that traffic to 192.168.0.2 denyed by the access list.

  When I changed the access list above with the following

  access-list 101 permit IP 192.168.0.1 0.0.0.255 192.168.1.0 0.0.0.255

  two items of work could successfully encrypted through IPSec tunnel.

  To look further into it, I realized that only the first entry of the IPsec access list has been really tested for the corresponding traffic!

  Is this a normal behavior or a known Bug? No work around for this problem?

  Kind regards.

  If you have ipsec-manual crypto map in crypto ACL, you can specify that an ACE. Check 12.2 docs:

  Access lists for labelled as ipsec-manual crypto map entries are limited to a single permit entry and the following entries are ignored. In other words, the security associations established by this particular entry card crypto are only for a single data stream. To be able to support several manually created security for different types of traffic associations, define multiple crypto access lists and then apply each a separate entrance card crypto ipsec-manual. Each access list should include a statement to define which traffic to protect.

• Tunnel VPN IPSEC (LAN to LAN) not succeeded traffic

  I had a temporary scenario I need to establish an IPSEC VPN between branch (cisco router) and HQ (VPN concentrator).

  The tunnel is established end but traffic stop happening after some 5-10 minutes. I have to manually clear the session encryption and then connectivity is fine. To test the above, I'll send branch ICMP packets to HQ. I can see ' cryto isakmp his ' and ' crytpo ipsec his ' active and fine.

  Share your opinion on this guy!

  Hello

  Make sure that this life corresponds to the router and the hub.

  This is a doc for IPSEC troubleshooting: -.

  http://www.Cisco.com/en/us/customer/products/ps6120/products_tech_note09186a00807e0aca.shtml

  Parminder Sian

• Problem creating a VPN IPSec with SRP527W

  Hello.

  I have a Setup like this:

  192.168.15.0/24 SRP527W <->internet <->ROUTER [172.16.16.1] <1:1 nat="">pfSense (raccoon vpn server) [172.16.16.2] 192.168.55.0/24

  I set up a VPN between the SRP and pfsense connection but the connection is not established because that timeout of the phase 1. According to racoon on the remote side does not.

  Before that, I've properly established a VPN between the SRP and another box of pfsense, but with a public IP address. The same host, I have an another vpn to the pfsense box (172.16.16.1) works correctly.

  These parameters of the PRS:

  IKE policy:

  Exchange mode: aggressive

  Permit ID: manual

  Remote ID: 172.16.16.2

  Encryption: 3DES

  Authentication: MD5

  DH: Group 2

  PSK: mysharedkey

  DPD: disabled

  IPSec policy:

  Policy type: police car

  Remote end point: IP ADDRESS

  IP: 172.16.16.2

  Life expectancy: 7800

  Set local subnet and remote according to the above (192.168.x.x) Network Setup.

  How can I check what is the problem? I struggled for several hours now and have failed to go out again! Any help really welcome!

  Thank you

  Lorenzo,

  The router to 172.16.16.1 allows all traffic to the pfsense VPN server when specific NAT is enabled or you have create access rules? My guess is that the router is blocking the traffic.

  -Marty

• "" My internet connection is constantly down and back on the error "negotiating IPsec year failure prevents the connection.

  Original title: The IPsec negotiation failure prevents the connection

  My internet connection is constantly visitor drop-off and restarted, and when I troubleshoot I get this message "the IPsec negotiation failure prevents the connection." I don't use VPN or anything so I have no idea what it means. I restarted the router several times. Any other ideas?

  Hello

  1. you are using a wired or a wireless connection?

  2. If it works well before?

  3 did you changes to the computer before the show?

  Method 1: Reset the router and see if that helps.

  Note: To help you reset the router, you can consult the manual that came with the router or the router contact manufacturer.

  Method 2: Uninstall and reinstall the NIC drivers and see if that helps.

  See the following steps:

  (a) click Start, right click on computer.

  (b) click on properties, click on Device Manager

  (c) expand the network card, right-click the wireless adapter option

  (d) click on uninstall

  (e) now go to your computer/wireless device manufacturer's website, download the updated drivers and install them.

  Reference:

  Updated a hardware driver that is not working properly:

  http://Windows.Microsoft.com/en-us/Windows7/update-a-driver-for-hardware-that-isn ' t-work correctly

• AnyConnect client... SSL vs. IPSec

  Hello

  I have a few questions on the Anyconnect VPN remote access.

  The anyconnect client works with SSL or IPSec ISAKMPv2? Y at - it no default or the default method?

  Where you would identify what method you choose? The anyconnect client automatically detects the type (SSL or IPSec)-based VPN server? How does the SSL over IPSec works in this case?  What is new ANyconnect 4.xclient?

  I would say that 90% or more customers use SSL.

  IPsec IKEv2 is used mainly by two categories of people:

  1. those who have need of next gen cryptographic algorithms for legal or regulatory reasons

  2. those who have had lovers, or CCIE candidates configure their VPN (joke - just a little bit)

  Is, when it is implemented correctly, did a good job to secure your traffic.

  The server (for example, the ASA) defines the method and the client that honors due to the associated connection profile that updates / downloads from the server.

  This initial process, even if you have IPsec IKEv2, normally happens over SSL as part of the preamble of IPsec session establishment. Manually, you can eliminate this small, but it is generally more trouble that it's worth.

• verification of IPSec on IOS / router

  is there a way to check Cisco router syslogs an IPSec tunnel is established with another Cisco router / peer? I've been looking at manuals system (DRY, events Crypto) Message and sees that things that would indicate problems - would be able to verify syslogs to validate that a tunnel came without a problem, or if a tunnel down, etc. but not sure what these messages look like.

  Thank you

  -randy

  Randy, now I understand!

  What I would do in this case is a number of things, but it must again some minor configuration on the router, it depends on the managed router provider, but... you should be able to ask the provider know that you want to get traps syslog from the router to your syslog server and they should be able to provide this and they should provide that After all, you pay for the services, even if is a router that is handled by the provider.

  On the router thye should set up a secondary server logging.

  e.i

  say that your syslog server is 20.20.20.20

  Router (config) #logging 20.20.20.20

  trap to Router (config) #logging of information

  the foregoing information is facilitated #6 on the 7 levels of ease, 0 being emergency 1 critical alerts 2 and so on... I think with this # info tunnel facility appears in the syslog.

  In addition, on the access lists on the tunnel Ipsec-L2L add the log keyword at the end of each of its access-list, with the journal of Keywork, the router will send traps related to the access list to your syslog, providing you with as well as the connection is stablihed or not.

  Rgds

  -Jorge

• Wildcard to attribute LDAP - IPSEC not WebVPN

  Hello

  I have installation using LDAP authentication and it works fine.

  I'm trying to limit to only users who are members of a security group (VPN users) to VPN in.

  I created a map to attribute LDAP (vpnmap) that checks if the user is a member of the required security group and if correct assigns a group policy (XXXvpntunnel).

  However, if a user is not a member of the group, the plan of ldap attribute does not affect Group Policy above it, but the user can always VPN in and when I do a check for group policy being used sh vpn-sessiondb remote detail, it shows me the same XXXvpntunnel used group policy.

  I created another group policy called XXXvpntunneldeny with ipsec sessions set to 0, but how can I assign this profile to group users who aren't a memberOf VPN users, so that they can not VPN in?

  I also tested by adding SamAccountname in the map of the attribute and the value "Administrator" and "xxxvpntunneldeny" group policy and it stops falling administrator in the via the VPN, but I want to be able to use a wildcard character to prevent all users not in the security VPN users group to connect through the VPN.

  Any suggestions on the best way to prevent users are not part of the VPN users group in AD to VPN in?

  Thank you.

  Here is a good link http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008089149d.shtml

  modify the group policy by default for vpn - concurrent connections 0

  apply a vpn simultaneous connections in the new group policy-specific.

  attributes of Group Policy DfltGrpPolicy

  VPN - concurrent connections 0

  Group POLICY-policy attributes

  VPN - 10 concurrent connections

  I was able to get this to work.

  forget the mapping for the call permissions. not necessary here.

  If someone are mapped to one of your manually created group policies, only default group policy applies, and they are unable to open a session.

• Ask/dissemination of certificates for IPSEC VPN user

  Hi all

  I have therefore an ASA established the connection to an LDAP, an SSL certificate signed for the cert of the device and use IPSEC IKEv2 VPN connections that are authenticated by the LDAP username and password and X.509 certificates.

  I have a CA server root of Microsoft Windows server 2012 (State in offline mode) and a Windows server 2012 subordinate certification authority server. Both are 10-year Certification authorities.

  To generate certificates VPN I'm going to the AC Sub, go to certificates (local computer) > personal > right click on the white space > all tasks > advanced operations > ask personalized.

  I have set up my cert accordingly and enable private key export.

  I submit new request to the CERT service. authority on the CA of Sub (same machine as before). I issue the certificate, and then export the certificate with the private key. I send this to my user, then they install this certificate in the personal certificates store and access the VPN access using this cert more username and password they have been assigned (no there is no possibility for them to ask their own PC)

  Question 1: Is there an easier way to do this? Command line? Script? preconfigured with the certificate settings .ini file?

  Question 2: These certificates are only 1 year. How can I generate certificates that are longer than that. I'm jumping for 3 years.

  Thank you!

  BROKEN

  Well it's quite simple setup-wise when you chose to go down the path of the client certificate. It is generally easier to use SCEP (Simple Certificate Enrollment Protocol) Protocol to manually deploy certificates. There is an example of a configuration Definition here.

  There is also a good presentation (or several) of Cisco Live. I recommend that you take a look at this one from 2012: Practice of PKI for VPN.

  In this presentation, he you (slide 39) specifically shows how to create a new certificate template and set the validity period for the value by default 1 years.

• DMVPN ISAKMP running in manual mode

  Our main goal is to improve safety on our WAN DMVPN using current equipment of Cisco.

  We use currently pré-partagées on our DMVPN IPsec keys are configured.

  We would like to switch to locally generated RAS keys, but our (spokes) Cisco routers have maps of crypto accelerator that prevents the use of RSA keys. We cannot move to Certs at this stage.

  We then tried to upgrade to IKEv2 IKEv1, but routers hub with the latest Cisco IOS code, do not support IKEv2.

  We thought we could use ISAKMP manual but need cryptographic cards.

  I can't locate any documentation that relates to manual DMVPN and IKSAMP.

  Someone at - it a URL or a configuration that supports manual DMVPN and ISAKMP in a Cisco environment?

  TKS

  Frank

  Frank,

  What exactly do you mean by "manaul" isakmp? ISAKMP is key management protocol - IE dynamic.

  If you mean the manual keys for IPsec as described here:

  http://www.Cisco.com/en/us/Tech/tk583/TK372/technologies_configuration_example09186a0080093c26.shtml

  They don't provide any security additional tho.

  IKE v2 has been intriduced in 15.0 I believe, I did not (yet) a deployment with DMVPN and IKEv2 (don't know if that is even supported at the moment).

  Please note that any router IOS can be a certification authority at the same time as a DMVPN hub or talk. If you want to deploy certificates.

  If it is added security you're looking for, a quick way, you can add for example add proxy authentication to access resources via the tunnel.

  Marcin

• Why IPSec does not support multicast traffic?

  If IPSec is a tunnel, why can't set you the multicast traffic in an ACL to protect?

  IPSec is a standard, and there is nothing in the standard that allows for multicast or broadcast traffic to go through it.

  Specifically, the IPSec RFC (ftp://ftp.isi.edu/in-notes/rfc2401.txt) says things like:

  A security association is identified by a triple compound

  a security parameter Index (SPI), Destination IP address, and a

  identifier (AH or ESP) security protocol. In principle, the

  Destination address may be a unicast, broadcast IP address

  address or multicast group address. However, the IPsec Security Association Management

  Currently, the mechanisms are defined only for unicast SAs.

  and

  The receiver-orientation of the Security Association implies that, in

  the case of unicast traffic, the destination system will normally be

  Select the SPI value. Making the destination select the SPI

  value, there is no risk for manually configured security

  Associations to conflict with automatically configured (e.g., via a)

  The key management protocol security associations) or safety

  Associations from several sources in conflict between them. For

  multicast traffic, there are multiple destination systems by

  Multicast group. If some system or person will need to coordinate

  Among all the multicast groups to select an SPI or SPIs on behalf of each

  multicast group and communicate the IPsec group information to

  all legitimate members of this group of multicast through mechanisms

  not defined here.

  Several transmitters to a multicast group SHOULD use a single title

  Association (and therefore Security Parameter Index) for all traffic to

  This group when a symmetric key encryption or authentication

  algorithm is used. In such circumstances, the receiver knows only

  that the message is from a system with the key for this

  Multicast group. In such circumstances, a receiver will be generally

  not be able to authenticate which system sent the multicast traffic.

  Specifications for other, more general multicast cases are postponed

  for later IPsec documents.

  Sorry to quote RFC from you, but we just follow the standard and the standard does not support this. You can bypass it by setting a GRE/IPSec connection, but what really is encapsulating the broadcast/multicast in a package of volition unicast first, then encrypt this unicast packet.

• IPSec and used keys

  Hello world.

  When you use ipsec (AH / ESP), authentication and encryption requires a secret key as dicussed in the following snippet:

  Authentication allows you to calculate a value (ICV) integrity checking on the contents of the package, and it is usually based on a cryptographic like MD5 or SHA-1 hash. It incorporates a secret key known to both ends and this allows the recipient value ICV in the same way. If the beneficiary Gets the same value, the sender has actually authenticated itself (relying on the property that the cryptographic hashes cannot practically be reversed). AH still provides authentication and ESP to do eventually.

  The encryption uses a secret key to encrypt data before transmission, and this mask the actual content of the package of eavesdroppers. There is a certain choice of algorithms here, with DES, 3DES, Blowfish and AES are quite common. Others are also possible.

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

  These keys can be configured manually, or they can be exchanged by IKE as dicussed in the following snippet:

  From the manuals key IKE

  Since both sides of the conversation need to know the secret values used in hash or encryption, there is the question of just how these data are exchanged. The manual keys require manual entry of the secret values at both ends, probably transmitted by an out-of-band mechanism, and IKE (Internet Key Exchange) is a sophisticated mechanism to do this online.

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

  When I look at the giiven examples in response to my last thread on the vpn, I don't see these sectet required for authentication keys and encrption pf packages. ;

  Here is an example:

  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

  Above that the keys are used for authentication and encrption of packages?

  Thanks and a great weekend.

  As written in your quote, Ike negotiates these keys for you. Since you are using Ike, you don't have to manually configure the encryption keys in a block.

  Sent by Cisco Support technique iPad App

• IPsec client for s2s NAT problem

  Hello

  We have a remote site (Paris) with a 5512 with some s2s and RA light customer vpn (anyconnect IPsec) tunnels.  AnyConnect has no problem, but the ipsec client can not pass traffic on the LAN.  The subnet behind the fw is 10.176.0.0/16 and the RA 10.172.28.0/24 customer pool.  However, we have a s2s than nat 10.0.0.0/8 tunnel and it appears that customers vpn IPSEC RA being bound traffic matches this rule and prevents connectivity to local resources via vpn ipsec client.

  ......

  hits = 485017, user_data = 0x7fffa5d1aa10, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol

  IP/ID=10.176.0.0 SRC, mask is 255.255.0.0, port = 0

  IP/ID=10.0.0.0 DST, mask is 255.0.0.0, port = 0, dscp = 0 x 0

  input_ifc = inside, outside = output_ifc

  ...

  Manual NAT policies (Section 1)

  1 (outdoor) static source Paris_Network Paris_Network static destination Remote2_LAN_Networks Remote2_LAN_Networks non-proxy-arp-search to itinerary (inside)

  translate_hits = 58987, untranslate_hits = 807600

  2 (inside) (outside) static source Paris_Network Paris_Network static destination DM_INLINE_NETWORK_2 DM_INLINE_NETWORK_2-route search

  translate_hits = 465384, untranslate_hits = 405850

  3 (inside) (outside) static source Paris_Network Paris_Network static destination Remote1_Networks Remote1_Networks-route search

  translate_hits = 3102307, untranslate_hits = 3380754

  4 (outside) (inside) static source Paris_RA_VPN Paris_RA_VPN static destination Paris_Network Paris_Network-route search

  translate_hits = 0, untranslate_hits = 3

  This method works on other sites with almost identical configuration, but for some reason, it doesn't work here.  I can't specify different subnets for the s2s tunnel because there is too much of.  Can someone help me and tell me why I can't get this to work?

  Hello

  So you're saying that the AnyConnect is working but not IPsec? What is the the AnyConnect VPN? It is outside the 10.0.0.0/8 network?

  You should be able to substitute the NAT VPN L2L configuration by simply configuring a separate NAT for the local network for VPN pool traffic at the top of your NAT configurations

  For example

  being PARIS-LAN network

  10.176.0.0 subnet 255.255.0.0

  object netwok PARIS-VPN-POOL

  10.172.28.0 subnet 255.255.255.0

  NAT (inside, outside) 1 static source PARIS PARIS - LAN LAN destination PARIS-VPN-POOL PARIS-VPN-POOL static

  This should ensure that the first rule on the SAA is the NAT rule that matches the VPN Client for LAN traffic. Other aircraft in the L2L VPN should still hit the original NAT rule to the VPN L2L

  If this does not work then we must look closer, the configuration.

  Hope this helps

  Remember to mark a reply as the answer if it answered your question.

  Feel free to ask more if necessary

  -Jouni

• 1841 as Concentrator VPN remote access with manual keying

  Hi there and happy new year 2011 with best wishes!

  I would use a router 1841 as VPN hub for up to 20 remote connections.

  My remote (third party) clients have IPsec capacity supported by IKE and the Manual Keying, but I have not found information about simple configuration of Cisco VPN remote access (only on the easy VPN server).

  I'd like to configure the VPN entry Server Manual (I think it's an easy way to start), no problem to do?

  files:

  -topology

  -third party router Ethernet / 3G GUI IPsec with choice of algorithm auth

  -third party router Ethernet / 3G GUI IPsec with choice of encryption algorithm

  I feel so much better that someone help me!

  Kind regards

  Amaury

  As the remote end is third-party routers, the only option you have will be LAN-to-LAN IPSec VPN. You can not run VPN easy because that is only supported on Cisco devices.

  If your remote end has a static external ip address that ends the VPN, you can configure card crypto static LAN-to-LAN on the 1841 router, however, if your remote end has dynamic external ip address, you must configure card crypto dynamic LAN-to-LAN on the 1841 router. All remote LAN subnets must be unique.