Similar Questions

• ASDM AES-256 not supported?

  Last night we went to upgrade our firewall so that only TLS1.x and AES-256/SHA-1 can be used for VPN connections in the box. After doing so, ASDM has stopped working, AnyConnect still works without problem.

  Java has reported an error in the SSL handshake. I went to reactivate the mechanisms of encryption one by one and determined that AES-128/SHA1 is the encryption algorithm above, sure I can connect via ASDM. I tried updating to the latest version of ASDM and 7.5 (2) doesn't connect on something higher to AES - 128. We use a certificate self-signed inside the interface, so I enabled ASDM on the outside where we have a third valid cert and tried connecting via https:///Admin to make sure it wasn't a certificate problem and no dice.

  It's a bit strange to me that ASDM only supports AES-256. I wonder if anyone has any ideas as to why I can't connect to AES-256 and/or workaround. It would also be allowed to use AES - 128 for the ASDM internally and AES - 256 connections for VPN connections; but I don't see any way to activate the SSL encryption on use by application methods, it seems that I can only configure them in the world and am therefore stuck with allow VPN connections to use AES - 128, if they wish (I made connections will negotiate to AES - 256 before attempting to AES - 128, but I would like to disable completely AES-128).

  Specs below, thank you in advance for your help.

  Plug

  ASA Version: 9.2 (2) 4

  ASDM Version: 7.4 (2), I also tried 7.5 (2)

  I thought about it and found an article that confirms my suspicions.

  ASDM is just a Java applet. As such, it uses the security it offered by your local installation of Java libraries.

  I found confirmation in this note of TAC: http://www.cisco.com/c/en/us/support/docs/security/adaptive-security-dev...

  I tried the instructions and (.. .wait for IT...) -It works!

  I went to the download page of Oracle for my Java version 8 here: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-21...

  I then these decompressed files and put them in the subdirectory appropriate according to the readme file. It was a little difficult to figure out exactly which of the several Java ASDM directories used - I have done this, right click on the process in the Task Manager, then go to the location of the file.

  (Note: when you upgrade the Oracle, so it can write a new directory - you will have to periodically repeat this step.)

  Given that, I put the two new files, changed my SSL encryption algorithm customized to exclude the AES-128 and then revived ASDM. I started Wireshark with a capture filter for my address ASA and watched the negotiating TLS 1.2 negotiate the AES-256 encryption.

  In the sense of "it didn't happen if there is no pictures", extra points for the screenshot of the real package decode (open in a new tab to zoom in):

  asdm_aes - 256.png

  

• CF9 encrypted with AES 256 bit, example anyone?

  Hello. I am looking for an example of the Encrypt method using the AES 256 key.  I think I have the unlimited jurisdiction policy files force active.  And I always get the CFError

  The specified key is not a valid key for encryption: illegal key size.

  Now I've hit the wall, can not get.  What harm am I doing?  How can I check that policy files are installed and accessible to my CF file?  Any help is greatly appreciated.

  < cfset thePlainText = "is this work for me?" / >

  Generate the secret key (128): < cfset AES128 = "#generatesecretkey('AES',128) #" / > < cfdump var = "#AES128 #" > < BR >
  Generate the secret key (192): < cfset AES192 = "#generatesecretkey('AES',192) #" / > < cfdump var = "#AES192 #" > < BR >
  Generate the secret key (256): < cfset AES256 = "#generatesecretkey('AES',256) #" / > < cfdump var = "#AES256 #" > < BR > < BR >

  < cfset = AES256 sequence / >
  < cfset theAlgorithm = "AES/CBC/PKCS5Padding" / >
  < cfset theEncoding = "base64" / >
  < cfset theIV = BinaryDecode ("6d795465737449566f7253616c7431323538704c6173745f", "hex") / >

  < cfset encryptedString = encrypt (thePlainText, sequence, theAlgorithm, theEncoding, theIV) / >

  <!--> view results
  < cfset keyLengthInBits = arrayLen (BinaryDecode (sequence, 'base64')) * 8 / >
  < cfset ivLengthInBits = arrayLen (theIV) * 8 / >
  < cfdump var = "" #variables # "label ="Results AES/CBC/PKCS5Padding"/ >"

  
  < cfabort >

  You probably don't have unlimited jurisdiction policy files to the right place.

  It is very common for admins to think that new policy files go into the directory/lib to usual. But they real go into the directory/jre/security/lib to (unless you're on a Mac, then they go to JAVA_HOME/security/lib).

  You also need to restart once you get in place policy files.

  I tested your script on my local machine, which does not have the policy of unlimited strength and it worked fine.

  Jason

• encrypt/decrypt AES 256, error vorsalt

  Fanny.

  So I try to get encrypt/decrypt with AES 256, both key of 32 bytes and 32 bytes IVorSalt. (Well Yes new java security files installed v6)

  'IF' I have 32-bit keys but does not use an IV at all, I get a good result looking for the AES 256. (I can say that this is AES 256 by looking at the length of the encrypted channel)

  '' IF '' I use a 32-bit key and 16-bit salt, I get a result of AES 128 (I know - according to the docs two theyre if posed with the same size, but the docs are wrong).

  But when I switch to using two an 32-bit key AND a salt of 32 bytes, I get the below error.

  An error occurred during the attempt encrypt or decrypt your input string: bad parameters: invalid IvParameterSpec: com.rsa.jsafe.crypto.JSAFE_IVException: invalid IV length. Must be 16.

  Has anyone got ' EVER' encrypt to work for them using AES 256 key of 32 bytes and 32 bytes of salt? Is this a bug in CF? Or Java? Or I do something wrong?

  <!--- ////////////////////////////////////////////////////////////////////////// Here's the Code ///////////////////////////////////////////////////////////////////////// --->

  < cfset theAlgorithm = "Rijndael/CBC/PKCS5Padding" / >

  < cfset gKey = "hzj + 1o52d9N04JRsj3vTu09Q8jcX + fNmeyQZSDlZA5w =" > <!--these 2 are the same--> ".

  <!-< cfset gKey = ToBase64 (BinaryDecode ("8738fed68e7677d374e0946c8f7bd3bb4f50f23717f9f3667b2419483959039c", "Hex")) - > >

  < cfset theIV = BinaryDecode ("7fe8585328e9ac7b7fe8585328e9ac7b7fe8585328e9ac7b7fe8585328e9ac7b", "hex") >

  <! - < cfset theIV128 = BinaryDecode ("7fe8585328e9ac7b7fe8585328e9ac7b", "hex") > - >

  < name cffunction = "DoEncrypt" access = "public" returntype = index 'string' = "Fires when the application is first created." >

  < name cfargument = "szToEncrypt" type = "string" required = "true" / >

  < cfset secretkey = gKey >

  < cfset szReturn = encrypt (szToEncrypt, secretkey, theAlgorithm, 'Base64', theIV) >

  < cfreturn szReturn >

  < / cffunction >

  < name cffunction = "DoDecrypt" access = "public" returntype = index 'string' = "Fires when the application is first created." >

  < name cfargument = "szToDecrypt" type = "string" required = "true" / >

  < cfset secretkey = gKey >

  < cfset szReturn = decrypt (szToDecrypt, secretkey, theAlgorithm, 'Base64', theIV) >

  < cfreturn szReturn >

  < / cffunction >

  < cfset szStart form ["toencrypt'] = >

  < cfset szStart = 'Test me!' >

  < cfset szEnc = DoEncrypt (szStart) >

  < cfset szDec = DoDecrypt (szEnc) >

  < cfoutput > #szEnc # #szDec # < / cfoutput >

  If you do something wrong depends on what you're trying to do.

  When it comes to so-called AES 256 there are two options as to what this may mean.

  1. in the programming world, AES 256 means crypto AES with a 128-bit blocks and a 256-bit key size. The CBC IV should be the same size as the block, not the same size as the key. It should be 128-bit

  2. in some parts of the world programming (PHP, mainly) 256 AES is Rijndael crypto with a block size of 256 bits. The problem here is that it is NOT AES. It uses the MCRYPT_RIJNDAEL_256 algorithm. Rijndael is the algorithm on which AES has been built, but not everything Rijndael AES.

  So, if what you want is crypto AES 256 bit, then using a key of 256 bits with a 128-bit IV is the correct way to do it. AES * only * a 128-bit blocks. It is therefore neither a bug in Java or CF.

  If you really need the 256-bit block size, then I guess you are probably trying to interact with a system that uses PHP for crypto. If this is the case, I think that you need to dig the hard way in Java and make cryptography to support. You may also add new JCA/JCE Crypto Provider if none of the standard service providers included with CF has MCRYPT_RIJNDAEL_256.

  Good luck

  Jason

• Acrobat (Reader) 8 not able to open AES-256 protection PDF rights management?

  Is this really true?

  Have not found a sheet explaining the requirements of Client-side, when

  PDF documencs with LCRM AES-256 encryption.

  In my lab, apparently, as if Reader-9 may open the thin documents, while Reader-8 fails to decrypt.

  Dilettanto

  Acrobat/Reader 9 was the first version to incorporate AES-256 code, so if you want to stay compatible with Reader 7 or 8 you must continue to use AES - 128. I think that's documented in help for the section that describes how the publishing strategy works.

  Jonathan

• Support for hardware AES encryption

  Hello

  I have a router 1721 configured with an IPSec for a 3000 VPN tunnel.

  I tried to use the AES-256 encryption method, but when I try to create the game of transformation on the router, the following message appears

  ++++++++++++++++++++++++++++++++++++

  XXX (config) #crypto ipsec transform-set esp - aes 256 esp-md5-hmac myset2

  ATTENTION: hardware encryption does not support transformation

  ESP - aes 256 in IPSec transform myset2

  ++++++++++++++++++++++++++++++++++++

  Is that mean that the AES encryption would be via the software?

  Any idea what hardware encryption support be available for AES?

  Cordially------Naman

  Yes, AES is currently done in software only. We are coming up with a range of new hardware accelerators that will make both 3DES and AES, no word officially on when they will be released, sorry.

• Microsoft L2TP over IPSEC client with AES encryption

  I configured L2TP over IPSec Cisco VPN router with Hastings 3des encryption is sha1 with diffie hellman Group 2 and I can't connect with success of Microsoft customers.

  but my question is why can I not connect when I am increasing the encryption with AES 256 and sha256 DH group 14, his looks that windows does not support advanced encryption.

  is it possiple to activate encryption aes with the highest level...? and how?.

  Hello

  To ensure that you get the best response to your concerns, we suggest that publish this request via the Web to Microsoft Developer network site. To do this, visit this link.

  Best regards.

• Call video concerns

  You can me whence video calling live streaming in the end go clear?... He'll get disappeared as soon as the call is interrupted, or even stored in your database for a particular period? If Yes, then can revisit us our old video without recording software conversation?... and I want to also know what is the source of these bunch of videos porn Skype in some porn sites?... If it was self recorded using 3rd party software and then downloaded by or hacked clients who is deciphering of these AES 256-bit based hard data encrypted by pirates or your Skype itself pass these sensitive videos on the porn sites? Can you give me an amazing answer clear all my doubts? pls don't post any Security Center or privacy policy link to designate...

  One more time!

  Everything can install a 3rd party software and record Skype conversations on their end.

  There are a lot of perverse people record their own video calls.

• Related issue of encryption-decryption Leap blackBerry!

  Hello

  In Blackberry Bond can encrypt us our data twice?

  Means that if I hello.txt in the sd card before use "Setting--> security" and privacy--> encryption--> Media Card Encryption Can quantify us this txt file using some application designed by Blackberry developer means app in Blackberry World or some other developer SNAP etc.?

  I thought of the computer which is very common that twice or three times of encryption-decryption with different algorithms, maybe I'm wrong, because there is no special data used by me except songs movies & cats!

  But as a software developer, I'm curious about encryption!

  Use AES-256 encryption & according to EETimes Blackberry claim huge time to break the encryption that made by AES - 256!

  But today I read new Dutch police 'reading' Blackberry emails

  If good authority can crack the encryption, then the bad guys also do!

  His Blackberry user feeling very precarious specailly passing other manufacturers of mobile because the only reason that is 'Blackberry is security'!

  What is this opinion experts forums or views?

  The response of BlackBerry indicates that this was 'communications' are involved. Depends on communication and used security measures.

  BlackBerry has published white papers on BBM. Those that can be found. I don't know later. E-mail will depend on the employee by the two sender security measures a receiver. Communication on the other has will depend on employee safety by the app. And finally it depends on the operational safety of the users.

  My feeling is that he is a third-party application.

  In any case, Yes, if you have an application that encrypts it's own data on the device or crypt individual files, I see no reason that could not be used in conjunction with encryption devices. I don't know that it adds anything. My there are advantages and disadvantages of encryption of file by file versus encryption of the system, but that's another question.

• BlackBerry 10 BB RC4 128 bit encryption browser security issues

  When you check Browserspy from your BlackBerry browser this link:

  http://BrowserSpy.dk/

  Then select 'Security' in the list

  Then select "SSL Encryption Check"

  For my Z30 I get RC4 128 bits (see photo).

  I also get the same results by using this test:

  https://www.fortify.NET/

  We're worried for RC4 128 bit security to the extent wherever Microsoft has recommended not using it.  See these two links:

  http://en.Wikipedia.org/wiki/RC4

  http://TechNet.Microsoft.com/en-us/library/cc179125.aspx

  I don't have any device to connect to the Internet with RC4 128 bit.

  Is there a way to change the encryption level or the order for the BlackBerry browser?

  (Just as a side - note because BlackBerry uses WebKit for browser (Apple uses WebKit) pick up a lot of sites Tester browser like Safari.) I woder if browser test to determine the market share does not report some of the Blackberry as Apple because of this "confusion".)

  

  This problem has been fixed in the new release - Version of 10.3.1.1581 software

  Now the two browser the personal side and (if you have activated BlackBerry Balance) the browser side work to connect using AES 256.

  Thanks BlackBerry!

• Cisco VPN Client cannot ping from LAN internal IP

  Hello

  I apologize in advance for my lack of knowledge about it, but I got a version of the software running ASA 5510 7.2 (2) and has been invited to set up a site with a client, I managed to get this configured and everything works fine. In addition, I created a group of tunnel ipsec-ra for users to connect to a particular server 192.168.10.100/24 remote, even if the connection is made successfully, I can not ping any IP on the LAN 192.168.10.0/24 located behind the ASA and when I ping inside the interface on the ASA it returns the public IP address of the external interface.

  If someone out there could give me a little push in the right direction, it would be much appreciated! This is the current configuration of the device.

  Thanks in advance.

  : Saved

  :

  ASA Version 7.2 (2)

  !

  hostname ciscoasa5510

  domain.local domain name

  activate the password. 123456789 / encrypted

  names of

  !

  interface Ethernet0/0

  nameif outside

  security-level 0

  PPPoE client vpdn group ISP

  12.34.56.789 255.255.255.255 IP address pppoe setroute

  !

  interface Ethernet0/1

  nameif inside

  security-level 100

  IP 192.168.10.1 255.255.255.0

  !

  interface Ethernet0/2

  Shutdown

  No nameif

  no level of security

  no ip address

  !

  interface Ethernet0/3

  Shutdown

  No nameif

  no level of security

  no ip address

  !

  interface Management0/0

  nameif management

  security-level 100

  IP 192.168.1.1 255.255.255.0

  management only

  !

  passwd encrypted 123456789

  passive FTP mode

  clock timezone GMT/UTC 0

  summer time clock GMT/BDT recurring last Sun Mar 01:00 last Sun Oct 02:00

  DNS server-group DefaultDNS

  domain.local domain name

  permit outside_20_cryptomap to access extended list ip 192.168.10.0 255.255.255.0 host 10.16.2.124

  permit inside_nat0_outbound to access extended list ip 192.168.10.0 255.255.255.0 host 10.16.2.124

  access-list Split_Tunnel_List note the network of the company behind the ASA

  Split_Tunnel_List list standard access allowed 192.168.10.0 255.255.255.0

  pager lines 24

  asdm of logging of information

  Outside 1500 MTU

  Within 1500 MTU

  management of MTU 1500

  IP local pool domain_vpn_pool 192.168.11.1 - 192.168.11.254 mask 255.255.255.0

  ICMP unreachable rate-limit 1 burst-size 1

  ASDM image disk0: / asdm - 522.bin

  don't allow no asdm history

  ARP timeout 14400

  Global 1 interface (outside)

  NAT (inside) 0-list of access inside_nat0_outbound

  NAT (inside) 1 0.0.0.0 0.0.0.0

  Route outside 0.0.0.0 0.0.0.0 12.34.56.789 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

  internal domain_vpn group policy

  attributes of the strategy of group domain_vpn

  value of 212.23.3.100 DNS server 212.23.6.100

  Protocol-tunnel-VPN IPSec

  Split-tunnel-policy tunnelspecified

  value of Split-tunnel-network-list Split_Tunnel_List

  username domain_ra_vpn password 123456789 encrypted

  username domain_ra_vpn attributes

  VPN-group-policy domain_vpn

  encrypted utilisateur.123456789 password username

  encrypted utilisateur.123456789 password username

  privilege of username user password encrypted passe.123456789 15

  encrypted utilisateur.123456789 password username

  the ssh LOCAL console AAA authentication

  AAA authentication enable LOCAL console

  Enable http server

  http 192.168.1.0 255.255.255.0 management

  http 192.168.10.0 255.255.255.0 inside

  No snmp server location

  No snmp Server contact

  Server enable SNMP traps snmp authentication linkup, linkdown cold start

  Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac

  Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac

  Crypto-map dynamic outside_dyn_map 20 set pfs

  Crypto-map dynamic outside_dyn_map 20 the value transform-set ESP-3DES-SHA

  card crypto outside_map 20 match address outside_20_cryptomap

  peer set card crypto outside_map 20 987.65.43.21

  outside_map crypto 20 card value transform-set ESP-3DES-SHA

  3600 seconds, duration of life card crypto outside_map 20 set - the security association

  map outside_map 65535-isakmp ipsec crypto dynamic outside_dyn_map

  outside_map interface card crypto outside

  crypto ISAKMP allow outside

  crypto ISAKMP policy 10

  preshared authentication

  aes-256 encryption

  sha hash

  Group 5

  life 86400

  crypto ISAKMP policy 30

  preshared authentication

  3des encryption

  sha hash

  Group 2

  life 86400

  tunnel-group 987.65.43.21 type ipsec-l2l

  IPSec-attributes tunnel-group 987.65.43.21

  pre-shared-key *.

  tunnel-group domain_vpn type ipsec-ra

  tunnel-group domain_vpn General-attributes

  address domain_vpn_pool pool

  Group Policy - by default-domain_vpn

  domain_vpn group of tunnel ipsec-attributes

  pre-shared-key *.

  Telnet 192.168.10.0 255.255.255.0 inside

  Telnet timeout 5

  Console timeout 0

  VPDN group ISP request dialout pppoe

  VPDN group ISP localname [email protected] / * /

  VPDN group ISP ppp authentication chap

  VPDN username [email protected] / * / password *.

  dhcpd dns 212.23.3.100 212.23.6.100

  dhcpd lease 691200

  dhcpd ping_timeout 500

  domain.local domain dhcpd

  !

  dhcpd address 192.168.10.10 - 192.168.10.200 inside

  dhcpd allow inside

  !

  management of 192.168.1.2 - dhcpd address 192.168.1.254

  enable dhcpd management

  !

  !

  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 rsh

  inspect the rtsp

  inspect esmtp

  inspect sqlnet

  inspect the skinny

  inspect sunrpc

  inspect xdmcp

  inspect the sip

  inspect the netbios

  inspect the tftp

  !

  global service-policy global_policy

  context of prompt hostname

  Cryptochecksum:1234567890987654321

  : end

  Hello

  Seems to me that you are atleast lack the NAT0 configuration for your VPN Client connection.

  This configuration is intended to allow the VPN Client to communicate with the local network with their original IP addresses. Although the main reason that this is necessary is to avoid this traffic to the normal rule of dynamic PAT passing this traffic and that traffic is falling for the corresponding time.

  You can add an ACL rule to the existing ACL NAT0, you have above and the NAT configuration should go next

  Add this

  permit inside_nat0_outbound to access extended list ip 192.168.10.0 255.255.255.0 192.168.11.0 255.255.255.0

  Hope this helps

  Let me know how it goes

  -Jouni

• Intercept-dhcp works to tunnel L2TP through IPsec ASA?

  Hello

  Is there anyone in the world operating a tunnel L2TP through IPsec on Cisco ASA for the native Windows clients and a Tunnel Split Configuration fully functional?

  I created a tunnel L2TP through IPsec on the ASA 5520 9.1 (6) Version of the software running. My configuration is:

  mask 172.23.32.1 - 172.23.33.255 255.255.252.0 IP local pool VPN_Users

  ROUTING_SPLIT list standard access allowed 192.168.0.0 255.255.0.0
  ROUTING_SPLIT list standard access allowed 172.16.0.0 255.248.0.0

  Crypto ipsec transform-set esp-aes-256 WIN10, esp-sha-hmac ikev1
  transport mode encryption ipsec transform-set WIN10 ikev1
  Crypto ipsec transform-set esp-3des esp-sha-hmac WIN7 ikev1
  Crypto ipsec transform-set transport WIN7 using ikev1
  Dynamic crypto map DYNMAP 10 set transform-set WIN10 WIN7 ikev1
  Crypto dynamic-map DYNMAP 10 the value reverse-road
  card crypto CMAP 99-isakmp dynamic ipsec DYNMAP
  CMAP interface ipsec crypto map

  Crypto isakmp nat-traversal 29
  crypto ISAKMP disconnect - notify
  Ikev1 enable ipsec crypto
  IKEv1 crypto policy 10
  preshared authentication
  aes-256 encryption
  sha hash
  Group 2
  life 86400
  output
  IKEv1 crypto policy 20
  preshared authentication
  3des encryption
  sha hash
  Group 2
  life 86400
  output

  internal EIK_USERS_RA group policy
  EIK_USERS_RA group policy attributes
  value of 12.34.56.7 DNS Server 12.34.56.8
  VPN - connections 2
  L2TP ipsec VPN-tunnel-Protocol ikev1
  disable the password-storage
  enable IP-comp
  enable PFS
  Split-tunnel-policy tunnelspecified
  value of Split-tunnel-network-list ROUTING_SPLIT
  ad.NYME.Hu value by default-field
  Intercept-dhcp enable
  the authentication of the user activation
  the address value VPN_Users pools
  output

  attributes global-tunnel-group DefaultRAGroup
  authentication-server-group challenger
  accounting-server-group challenger
  Group Policy - by default-EIK_USERS_RA
  IPSec-attributes tunnel-group DefaultRAGroup
  IKEv1 pre-shared-key *.
  tunnel-group DefaultRAGroup ppp-attributes
  No chap authentication
  no authentication ms-chap-v1
  ms-chap-v2 authentication
  output

  Now, the native Windows clients can connect using this group of tunnel:

  our - asa # show remote vpn-sessiondb

  Session type: IKEv1 IPsec

  User name: w10vpn Index: 1
  Assigned IP: 172.23.32.2 public IP address: 12.34.56.9
  Protocol: IKEv1 IPsecOverNatT L2TPOverIPsecOverNatT
  License: Another VPN
  Encryption: IKEv1: (1) 3DES IPsecOverNatT: (1) L2TPOverIPsecOverNatT AES256: (1) no
  Hash: IKEv1: (1) IPsecOverNatT SHA1: (1) L2TPOverIPsecOverNatT SHA1: (1) no
  TX Bytes: 1233 bytes Rx: 10698
  Group Policy: Group EIK_USERS_RA Tunnel: DefaultRAGroup
  Connect time: 15:12:29 UTC Friday, April 8, 2016
  Duration: 0: 00: 01:00
  Inactivity: 0 h: 00 m: 00s
  Result of the NAC: unknown
  Map VLANS: VLAN n/a: no

  However, real communication takes place above the tunnel if I 'Gateway on remote network use default'. If I disable this option among the preferences of the IPv4 of the virtual interface of VPN in Control Panel as described in the section 'Configuration of Tunnel of Split' of This DOCUMENT then Windows sends all packets through the channel, because it fails to extract from the ASA routing table. Split routing works perfectly when using legacy Cisco VPN Client with the same group policy, but does not work with L2TP over IPsec.

  As far as I can see, the 'intercept-dhcp' option is inefficient somehow. I even managed to intercept packets of the PPP virtual machine Windows XP interface, and I saw that windows sends its DHCP INFORM requests, but the ASA does not. My question is why?

  -J' made a mistake in the above configuration?

  -Can there be one option somewhere else in my config running that defuses intercept-dhcp?

  - Or is there a software bug in my version of firmware ASA? (BTW, I tried with several versions of different software without success?

  Hi, I have the same problem you have, but I was lucky enough to be able to install version 9.2 (4) on which this feature works very well. I'm suspecting that it is a bug, but I need to dig a little deeper. If I find something interesting I'll share it here.

• IPSec tunnels does not work

  I have 2 Cat6, with IPsec SPA card, while the other did not.

  I tried setting IPsec tunnel between them, but somehow can't bring up the tunnel, can someone help me to watch set it up?

  A (with SPA):

  crypto ISAKMP policy 1

  BA aes 256

  preshared authentication

  Group 5

  ISAKMP crypto cisco123 key address 0.0.0.0 0.0.0.0

  ISAKMP crypto keepalive 10

  Crypto ipsec transform-set esp - aes 256 esp-sha-hmac testT1

  !

  Crypto ipsec profile P1

  Set transform-set testT1

  !

  Crypto call admission limit ike his 3000

  !

  Crypto call admission limit ike in-negotiation-sa 115

  !

  interface Tunnel962

  Loopback962 IP unnumbered

  tunnel GigabitEthernet2/37.962 source

  tunnel destination 172.16.16.6

  ipv4 ipsec tunnel mode

  Profile of tunnel P1 ipsec protection

  interface GigabitEthernet2/37.962

  encapsulation dot1Q 962

  IP 172.16.16.5 255.255.255.252

  interface Loopback962

  1.1.4.200 the IP 255.255.255.255

  IP route 2.2.4.200 255.255.255.255 Tunnel962

  B (wuthout SPA):

  crypto ISAKMP policy 1

  BA aes 256

  preshared authentication

  Group 5

  ISAKMP crypto cisco123 key address 0.0.0.0 0.0.0.0

  !

  !

  Crypto ipsec transform-set esp - aes 256 esp-sha-hmac T1

  !

  Crypto ipsec profile P1

  game of transformation-T1

  interface Tunnel200

  Loopback200 IP unnumbered

  tunnel GigabitEthernet2/1.1 source

  tunnel destination 172.16.16.5

  ipv4 ipsec tunnel mode

  Profile of tunnel T1 ipsec protection

  interface Loopback200

  2.2.4.200 the IP 255.255.255.255

  interface GigabitEthernet2/1.1

  encapsulation dot1Q 962

  IP 172.16.16.6 255.255.255.252

  IP route 1.1.4.200 255.255.255.255 Tunnel200

  I can ping from 172.16.16.6 to 172.16.16.5, but the tunnel just can not upwards. When I turned on "debugging ipsec cry ' and ' debug cry isa", nothing comes out, when I trun on 'cry of debugging sciences', I got:

  "00:25:17: crypto_engine_select_crypto_engine: can't handle more."

  Hello

  You need a map of IPSEC SPA on chassis B do IPSEC encryption. Please see the below URL for more details.

  Without a SPA-IPSEC - 2G or IPsec VPN Services Module of acceleration, the IPsec network security feature (configured with the crypto ipsec command) is supported in the software only for administrative for Catalyst 6500 series switches and routers for the Cisco 7600 Series connections.

  http://www.Cisco.com/en/us/docs/switches/LAN/catalyst6500/IOS/12.2SXF/native/release/notes/OL_4164.html

  Kind regards

  Arul

  * Rate pls if it helps *.

• Significant decline in performance on the GRE tunnel after using cryptographic protection

  Hi all

  I have two G1 RSR (1811 and 1812) who have a GRE tunnel between them.

  Without any encryption protection I received about 3.6 MB/s in regular transfers of Windows SMB. After using cryptographic protection of the tunnel I'm now only 2.7 MB/s transfers of same.

  No idea as to why this is?

  My conclusions:
  According to this http://www.cisco.com/web/partners/downloads/765/tools/quickreference/vpn... the AES crypto fixed return of the 1800s is 40 MB/s.
  The increase in overhead of cryptographic protection shouldn't be the problem I tried to test the transfers on the tunnel without protection and 'ip tcp adjust-mss 800' of the tunnel. There was only a small performance drop here, not as much as with the crypto.
  I tried several sets of cryptographic transformation, they all give the same performance as long as they are made in the material.
  ISAKMP is always done in the software? I can't get it to show its is done at the hardware level, regardless of isakmp policy.

  IP MTU on both interfaces of tunnel are 1434 with cryptographic protection.

  My config:

  crypto ISAKMP policy 10
  BA aes 256
  sha512 hash
  preshared authentication
  Group 20
  isakmp encryption key * address *.
  !
  Crypto ipsec transform-set ESP-AES256-SHA esp - aes 256 esp-sha-hmac
  transport mode
  !
  Profile of crypto ipsec VPN
  game of transformation-ESP-AES256-SHA
  !
  Tunnel10
  IP 10.251.251.1 255.255.255.0
  no ip redirection
  no ip proxy-arp
  load-interval 30
  source of tunnel FastEthernet0
  tunnel destination *.
  tunnel path-mtu-discovery
  Tunnel VPN ipsec protection profile
  !

  Output:

  ISR1811 #sh crypto ipsec his
  Interface: Tunnel10
  Tag crypto map: addr Tunnel10-head-0, local *.

  protégé of the vrf: (none)
  ident (addr, mask, prot, port) local: (* / 255.255.255.255/47/0)
  Remote ident (addr, mask, prot, port): (* / 255.255.255.255/47/0)
  current_peer * port 500
  LICENCE, flags is {origin_is_acl},
  #pkts program: 683060, #pkts encrypt: 683060, #pkts digest: 683060
  #pkts decaps: 1227247, #pkts decrypt: 1227247, #pkts check: 1227247
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  Errors #send 0, #recv 0 errors

  endpt local crypto. : *, remote Start crypto. : ***
  Path mtu 1500, mtu 1500 ip, ip mtu IDB FastEthernet0
  current outbound SPI: 0x8D9A911E (2375717150)
  PFS (Y/N): N, Diffie-Hellman group: no

  SAS of the esp on arrival:
  SPI: 0xD6F42959 (3606325593)
  transform: aes-256-esp esp-sha-hmac.
  running parameters = {Transport}
  Conn ID: 45, flow_id: VPN on board: 45, sibling_flags 80000006, crypto card: head-Tunnel10-0
  calendar of his: service life remaining (k/s) key: (4563208/1061)
  Size IV: 16 bytes
  support for replay detection: Y
  Status: ACTIVE

  the arrival ah sas:
  SAS of the CFP on arrival:

  outgoing esp sas:
  SPI: 0x8D9A911E (2375717150)
  transform: aes-256-esp esp-sha-hmac.
  running parameters = {Transport}
  Conn ID: 46, flow_id: VPN on board: 46, sibling_flags 80000006, crypto card: head-Tunnel10-0
  calendar of his: service life remaining (k/s) key: (4563239/1061)
  Size IV: 16 bytes
  support for replay detection: Y
  Status: ACTIVE

  outgoing ah sas:
  outgoing CFP sas:

  ISR1811 #show in detail his crypto isakmp
  Code: C - IKE configuration mode, D - Dead Peer Detection
  NAT-traversal - KeepAlive, N - K
  T - cTCP encapsulation, X - IKE Extended Authentication
  PSK - GIPR pre-shared key - RSA signature
  renc - RSA encryption
  IPv4 Crypto ISAKMP Security Association

  C - id Local Remote I have VRF status BA hash Auth DH lifetime limit.
  2015 * * ACTIVE aes sha5 psk 20 12:42:50
  Engine-id: Conn-id = SW: 15
  2016 * * ACTIVE aes sha5 psk 20 12:42:58
  Engine-id: Conn-id = SW: 16
  IPv6 Crypto ISAKMP Security Association

  Use of CPU for the transfer with crypto:

  ISR1811 #sh proc cpu its

  ISR1811 09:19:54 Tuesday Sep 2 2014 THIS

  544444555555555544444444445555544444555556666644444555555555
  355555000001111133333888884444444444333333333377777666662222
  100
  90
  80
  70
  60                                          *****     *****
  50 ****************     **********     ************************
  40 ************************************************************
  30 ************************************************************
  20 ************************************************************
  10 ************************************************************
  0... 5... 1... 1... 2... 2... 3... 3... 4... 4... 5... 5... 6
  0 5 0 5 0 5 0 5 0 5 0
  Processor: % per second (last 60 seconds)

  ISR1812 #sh proc cpu history

  ISR1812, Tuesday 09:19:24 Sep 2 2014 THIS

  666666666666666666666666666666666666666666655555444445555544
  777888883333344444555555555566666777770000055555777776666666
  100
  90
  80
  70 ********          ********************
  60 ************************************************     *****
  50 ************************************************************
  40 ************************************************************
  30 ************************************************************
  20 ************************************************************
  10 ************************************************************
  0... 5... 1... 1... 2... 2... 3... 3... 4... 4... 5... 5... 6
  0 5 0 5 0 5 0 5 0 5 0
  Processor: % per second (last 60 seconds)

  I think that this performance is what you should get with the legacy 18xx SRI G1. But the performance degradation is perhaps really a little too high.

  For ISAKMP, there is no problem with that. The amount of protected data is too small to have one any influence.

  As a first test, I would remove the GRE encapsulation by setting "mode ipsec ipv4 tunnel" on the tunnel interface and compare if the results improve.

• a half working IPSec

  Hello world

  Thank you for taking the time to read my post.

  Using the ISO version 12.4 (13r) T11

  I have setup an IPSEC tunnel between my cisco 2821 and UBNT device.  The LAN side 2821 is 10.0.1.x and the LAN side UBNT is 10.0.2.x.  The internet is in the middle.

  Since the ubnt device, they can access everything on the 10.0.1.x network, but 10.0.1.x cannot access anything on the 10.0.2.x network.  IM thinking I have not missed any statement nat somewhere...  but where?

  Current configuration: 4951 bytes
  !
  ! 00:15:28 EDT configuration was last modified Saturday, June 7, 2014 by a-rogarrett
  ! NVRAM config last updated at 23:12:54 EDT Friday, June 6, 2014 by a-rogarrett
  !
  version 12.4
  horodateurs service debug datetime msec
  Log service timestamps datetime msec
  no password encryption service
  !
  hostname home.1
  !
  boot-start-marker
  boot-end-marker
  !
  enable secret 5
  !
  AAA new-model
  !
  !
  AAA authentication login default local
  AAA of authentication ppp default local
  !
  !
  AAA - the id of the joint session
  clock timezone EDT - 4
  !
  !
  !
  !
  IP cef
  !
  !
  IP domain name
  property intellectual auth-proxy max-nodata-& 3
  property intellectual admission max-nodata-& 3
  !
  Authenticated MultiLink bundle-name Panel
  !
  VPDN enable
  !
  VPDN-Group 1
  ! PPTP by default VPDN group
  accept-dialin
  Pptp Protocol
  virtual-model 1
  receive window 1024-tunnel L2TP
  !
  !
  voice-card 0
  No dspfarm
  !
  !
  !
  voip phone service
  replacement CLID name
  allow sip to sip connections
  no additional service moved temporarily sip
  no service additional sip refer
  SIP
  binding control source-interface GigabitEthernet0/1
  bind media source-interface GigabitEthernet0/1
  ID said ppi
  E911
  udp tcp transport switch
  Outbound proxy dns:
  Outbound proxy dns:
  No judgment call service
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  username password 0
  !
  door-key crypto orddie
  address of the pre-shared key key
  !
  crypto ISAKMP policy 10
  BA aes 256
  preshared authentication
  Group 2
  life 3600
  ISAKMP crypto key hostname No.-xauth
  !
  !
  Crypto ipsec transform-set esp - aes 256 esp-sha-hmac orddie
  Crypto ipsec df - bit clear
  !
  orddie 10 ipsec-isakmp crypto map
  defined peer UBNT peripheral IP
  Set transform-set orddie
  match address 101
  !
  Archives
  The config log
  hidekeys
  !
  !
  property intellectual ssh authentication-2 retries
  property intellectual ssh version 1
  !
  !
  !
  !
  interface GigabitEthernet0/0
  Comcast description
  DHCP IP address
  IP access-group 184 to
  NAT outside IP
  IP virtual-reassembly
  automatic duplex
  automatic speed
  orddie card crypto
  !
  interface GigabitEthernet0/1
  Network description
  IP 10.0.1.169 255.255.255.0
  IP nat inside
  IP virtual-reassembly
  automatic duplex
  automatic speed
  !
  interface Serial0/0/0
  no ip address
  Shutdown
  2000000 clock frequency
  !
  interface Serial0/0/1
  no ip address
  Shutdown
  2000000 clock frequency
  !
  interface Serial0/1/0
  no ip address
  Shutdown
  2000000 clock frequency
  !
  interface Serial0/1/1
  no ip address
  Shutdown
  2000000 clock frequency
  !
  interface virtual-Template1
  IP unnumbered GigabitEthernet0/0
  IP nat inside
  IP virtual-reassembly
  peer default ip address pool ppp
  No keepalive
  PPP encryption mppe auto
  Ms-chap PPP authentication chap pap
  !
  PPP local pool 192.168.1.1 IP 192.168.1.10
  IP forward-Protocol ND
  IP route 0.0.0.0 0.0.0.0 dhcp
  !
  !
  no ip address of the http server
  no ip http secure server
  overload of IP nat inside source list 100 interface GigabitEthernet0/0
  !
  internal network of the access list 100 remark
  access-list 100 deny ip 10.0.1.0 0.0.0.255 10.0.2.0 0.0.0.255
  access-list 100 deny ip 10.0.2.0 0.0.0.255 10.0.1.0 0.0.0.255
  access-list 100 permit ip 10.0.1.0 0.0.0.255 any
  access-list 100 permit ip 192.168.1.0 0.0.0.255 any
  access-list 101 permit ip 10.0.1.0 0.0.0.255 10.0.2.0 0.0.0.255
  access-list 101 permit ip 10.0.2.0 0.0.0.255 10.0.1.0 0.0.0.255
  access-list 184 permit ip host IP of the device UBNT everything
  access-list 184 allow the host ip all
  access-list 184 allow the host ip all
  access-list 184 allow accord a
  access-list 184 permit tcp any any eq 1723
  access-list 184 permit udp any any eq 1701
  access-list 184 permit icmp any any echo
  access-list 184 permit icmp any any echo response
  access-list 184 permit udp any any eq bootpc
  access-list 184 permit udp any any eq bootps
  access-list 184 permit udp any any eq isakmp
  access-list 184 permit udp host 75.75.75.75 eq field all
  access-list 184 permit udp host 75.75.76.76 eq field all
  access-list 184 permit udp host 8.8.8.8 eq field all
  access-list 184 permit udp any any eq ntp
  access-list 184 permit udp any eq ntp everything
  access-list 184 permit tcp any eq www everything
  access-list 184 permit tcp any eq 443 all
  access-list 184 permit udp any any eq non500-isakmp
  !
  !
  !
  !
  !
  !
  control plan
  !
  !
  !
  !
  !
  !
  !
  Dial-office of communications telephone voip
  destination-model
  session protocol sipv2
  session target ipv4:10.0.1.99
  session udp transport
  Codec g711ulaw
  !
  Dial-peer voice 10 voip
  destination-model 1...
  session protocol sipv2
  session target dns:
  session udp transport
  !
  !
  SIP - ua
  
  !
  !
  !
  Line con 0
  line to 0
  line vty 0 4
  entry ssh transport
  line vty 5 15
  access-class 100 in
  entry ssh transport
  !
  Scheduler allocate 20000 1000
  NTP-period clock 17180192
  NTP 17.151.16.21 Server prefer
  !
  end

  Hello

  you have problem with ACL:

  you need to do it this way: because recommend Cisco ACL must be mirror on both sides.

  access-list 101 permit ip 10.0.1.0 0.0.0.255 10.0.2.0 0.0.0.255
  No access list 101 didn't allow ip 10.0.2.0 0.0.0.255 10.0.1.0 0.0.0.255

  and

  No access list 100 deny ip 10.0.2.0 0.0.0.255 10.0.1.0 0.0.0.255

  When you use pure IPSEC a site not of GRE over IPSEC, then you need allowed ESP not Grateful

  No access list 184 allow accord a

  access-list 184 allow esp a whole

  the latest Cisco recommends for no. - nat with road-map:

  IP nat inside source map of route No.-nat interface GigabitEthernet0/0 overload

  route map no - naallowed t 10

  corresponds to the IP 100

  Kind regards

  Kazim

  "please me, rate if useful post.