IPv6 on IPv4 VTI ipsec traffic

Similar Questions

• IPv6 and IPV4 aid

  Hello everyone,

  I use a MacBook Pro 15 of retina in 2013. My ISP provides IPV6 connectivity yet, so I created a help service of Hurricane Electric IPV6 tunnel. I created a raspberry Pi to give IPV6 addresses on my subnet and everything works as expected. I have IPV6 connectivity on my MacBook and I can browse IPV6 sites. I did a test on http://ipv6-test.com . The results are positive, but he said that my browser (latest version of Google Chrome, but the problem is too much on Safari and Firefox) is not compatibility help. If I try the test again on Windows, Android, ecc. the warning message disappears.

  The problem is that I can't browse websites using my MacBook. For example, the Apple site has not been appearing: I ran wireshark and Chrome was trying to load everything using IPV6, without success. Also try to access https://eolo.it/ (my ISP site) generates errors: it does not always work on my MacBook, while open it under Windows and IPV6 has no problem at all. I think that my MacBook (or in general OSX El Capitan) is not able to fall back to iPV4 when site an IPV6, but it does not work. I've read about 'Happy eyeballs' and I would like to know how to solve my problem.

  I know that I could move to IPV6, but I prefer it to be, and in, I would like to be able to use iPV6 when my ISP provide me with an IPV6 address.

  Thanks in advance.

  I don't remember, in Sys Prefs > network > advanced, is there still a way to put automatic IPv6?

• Interesting CRYPTO ipsec traffic - need some understanding

  Hi friends,

  I need your help to understand the works of tunnel passing crypto ipsec. It is always said that valuable traffic to the times needs to be mirror config. Now my doubt is if I add a host of 10.10.10.10/32 entry at one end and add an entry for network 10.10.10.0/24 to the other end, it will work? If it's not there? According to the logic that this host 10.10.10.10 has work I am rite? Sometimes back I met this senario where part of the IP'S work and other is... ". After checking the config we experienced that one side has been added to it like 24 and another there are 25.

  Ipsec tunnel will exchange their interesting traffic ACL acoss each other what phase 2 is coming? What happens if I add the above said 10.10.10.10 stuff in tunnel work already... It will cause any problem?

  Awaiting your response

  Thanks & best regards,

  Kamal

  The simple answer to your question is Yes, a entity 32 on one side of the tunnel should work if the network is defined as a 24 on both sides. This isn't like a list of prefixes or routing protocol dynamic where subnet masks must match. Statements of network in the passage from Phase 2 of the IPSEC tunnel (which defines which traffic runs through the tunnel) are defined through ACL, so as long as the traffic meets the criteria of the ACL, then go above the tunnel. That being said, your tunnel of phase 2 should have never been created in your 24 & 25 example because network statements not matching - it's weird. Maybe your tunnels put in correspondence, but you exclude some of the traffic to be NAT'ed?

  As you we, however, portions of the phase 2 of the tunnel (aka security association) must be mirror images. If you use two ASAs then you can simply reverse ACL source and destination. If you make the ASA for say, a netscreen, it may be a little more complex depending on whether you're doing road or political from ipsec on this side there. If you can't get the 32 device work for some reason, you can also create another specific to this traffic safety association.

• Star redirect speaks IPSEC traffic on hub site

  I'm sure it can be done. I have Cisco PIX appliances in a few branches as well as a main to the central PIX firewall. I'm all talk to each other via IPSEC tunnels. I would like to direct all IP traffic from the branches to go through the IPSEC tunnels and on the Internet from Headquarters. Basically Disable tunneling split at all locations and force traffic into the main office using IPSEC tunnels and road back to the Internet. I hope this makes sense and I'm not sure how the routing part will work. Could someone please help me understand this part.

  Thank you.

  This is possible on the v7, not v6.x.

  Take a look on this cisco doc:

  http://www.Cisco.com/en/us/products/HW/vpndevc/ps2030/products_configuration_example09186a00804675ac.shtml#diag

• Collect data netflow on the load decrypted in IPSec traffic

  Hello

  I have a case where our customers have an IPSec Site to Site tunnel, where traffic is hair-pin on a 2901 router.

  They would collect netflow on the load decrypted for accounting purposes.

  The problem is that according to the order of operations on the router IOS, the netflow is recorded before the packet is decrypted penetration, and after the package is encrypted evacuation.

  Is there a solution to this, or someone has experience with alternative solutions for this scenario?

  (e.g. DURATION encrypted traffic to another device which decrypts and generate netflow data?)

  Best regards

  Steffen

  Hey, Steffen,.

  Yes the path of the EFC is so different [Card Crypto is a feature of output while the Tunnel Protection is a feature of post-encap].

  Therefore, we can apply all feature output such as netflow on a tunnel or a virtual-template interface since then we validate the traffic post-decapsulation.

  An example of one of my box [a vpn to 4.2.2.2 peer ping]. NetFlow which attracts traffic after decryption.

  R1 - HUB #sh ip cache flow. I Vi1

  Vi1 172.16.1.1 Et0/1 4.2.2.2 01 0000 0800 153

  See you soon,.

  Olivier

• Try to route all ipsec traffic

  Hello

  Can anyone help me please with config below. I am trying to route all traffic (web browsing) by the router.

  For now I can connect to the vpn and browse the network, but users cannot resolve web pages (page loading without end). If I activate split tunnel web browsing works but not what I'm used to.

  LAN pool 192.168.10.0/24

  local pool 192.168.20.0/24

  I assume it has something with ACL and NAT, but I can't understand that.

  Config is attached.

  Thank you.

  I think your config should work.

  The router which model is it and what version of software you are running?

• Connectivity limited on win 7. IPv6 and IPV4 are not connected to the internet. Help.

  Limited Internet connectivity.

  "limited access" means that your computer does not get an IP address from the router.  This means usually a bad network password is stored in the PC and the router is rejected.

  To diagnose the problem, try to connect your computer to another network.  If it works, then you know that it is specific to your network.  If it isn't, which would indicate a problem with installing wireless in your laptop.  Try to remove and install the latest driver wireless.

  Try to delete the particular network of list of computer networks.  Then refresh the list to be able to enter the password again.

  If this does not work, recycling the modem/router.

  If all else fails, you can buy a plug in USB wireless network device for usually under $40, which will offer an additional wireless for you installation.  They can actually be very beneficial because they work often better than the high ones.  Make sure the USB network device you purchase is a N.

• Portege Z30 poster ipv4 and ipv6 - only pxe boot is

  Hi all

  Toshiba Portege Z30

  We do all our installs via PXE, when you press F12 I get now two network options where normally I would just get a.

  F12 gives the following options:

  HDD/SSD: SAMSUNG SSD SERIES
  LAN1: IPv6
  LAN2: IPv4

  When I select the option I get what follows read (IP addresses were not included, but are correctly pointing to the right servers):

  ------------------------------------------------------------------------
  > On IPv4 PXE boot.
  IP address of the station is *. ***. ***. ***
  IP address of the server is *. ***. ***. ***
  NBP filename is SMSBoot\x86\wdsnbp.com
  The NBP file size is 30832 bytes
  Download the NBP...

  Succeed to download the NBP file.

  Download the NBP...

  Succeed to download the NBP file.
  Press a key to continue...
  ------------------------------------------------------------------------

  I tried searching through the BIOS settings but can't find nothing obvious

  Can any advise if there is anything I can try to get this laptop to perform a PXE boot please

  Let me know if you need additional information

  Kind regards
  Steve

  Looks like your server isn't aware UEFI.
  Try changing the the CSM UEFI Boot Mode in the BIOS under the Advanced tab, under System Configuration. You may have to disable Secure Boot first.

• Forward traffic IPSec VPN

  Hi dude, I want to address this topic to understand ipsec VPN throughput.
  I have 1 router 1921 and 1 ASA 5510 behind the router. I want to set up remote access on ASA firewall by traffic shaping router forwards (port UDP 500 and UDP 4500 port). I have 1 public IP address and I already configure NAT on the router. In fact, I heard that IPsec cannot pass through the NAT. So if I want to configure VPN on SAA, it is possible to do? All the guys comment on and propose your idea to me. Thanks for your reply.

  Hello

  When you say, you have a public IP address. Is this address IP is assigned to the interface of the router or not attributed distinct IP address.

  If its not assigned public IP address, you can make static NAT with ASA outside the IP address to a public IP address on your router as below

  {100.100.x.x}fa0/0<-(R1)->fa0/1{192.168.100.1}<------->{192.168.100.2}eth0/0(ASA)eth0/1{172.16.01}

  IP nat inside source 192.168.100.2 static 100.100.x.x

  This way you have full IP to IP NAT.

  If you got the only IP address that is assigned to the interface of the router then you will need to nat as port said

  For VPN gateways running versions of the Cisco IOS software prior to version 12.2 (13) T, the functionality of IPSec passthrough is required on the router that runs PAT to enable payload ESP (Encapsulating Security) through.

  Note: This feature is called IPSec through NAT (NAT) network support Advisory software (registered only customers).

  In order to initiate the tunnel of the local counterpart (PATed), no configuration is necessary. In order to initiate the tunnel of the remote peer, these commands are needed:

  • IP nat inside source static esp inside_ip interface, interface

  • IP nat inside source udp static inside_ip 500 interface interface 500

  For VPN gateways that run a version of the Cisco IOS software later than 12.2 (13) T, IPSec traffic is encapsulated in data protocol packets UDP (User) port 4500. This feature is called IPSec NAT transparency . In order to initiate the tunnel of the local counterpart (PATed), no configuration is necessary.

  In order to initiate the tunnel of the remote peer, these commands are needed:

  http://www.Cisco.com/c/en/us/support/docs/security-VPN/IPSec-negotiation-IKE-protocols/23820-iOS-Pat-IPSec-tunnel.html

  • IP nat inside source udp static inside_ip 4500 4500 interface interface

  • IP nat inside source udp static inside_ip 500 interface interface 500

  HTH

  Sandy

• VCS IPv4/IPv6 interoperability

  Hello everyone,

  I'm challenged to a customer who is deployed IPv6 for video with VCS control do IPv6/IPv4 Interworking. I need to validate the design to ensure that interoperability is as provided by the network of the customer team.

  As I understand it (at least for SIP-H323) interoperability is the closest VCS of the EP that should the interoperability that supports interoperability.

  So in any design with VCS supporting protocols IPv4 and IPv6 interoperability could occur on any VCS according to the direction of the call.

  This is very critical to my client: he still wants the same VCS do interoperability.

  I enclose the deployed infrastructure and I would like to be sure how the media is routed when IPv4 to IPv6 interoperability.

  The idea of the client is to get an environment

  -Zone 1: IPv6 only where VCS and video systems only communicate over IPv6

  -Zone 2: IPv4 and IPv6 where VCS manages video systems IPv6 or IPv4

  -Neighbour Zone between Zone 1 and Zone 2 in IPv6 only

  Design seeks ONLY to VCS who manages the Protocol IPv6 and IPv4 interworking and no interoperability at all on the CV in area 1 IPv6 only. It is matter of bandwidth that VCS in Zone 1 is limited to media routing would be beyond the network.

  In the VCS, I have not found how to disable IPv4-IPv6 interoperability, as this can be done for the interoperability of SIP-H323 (there is a menu for this), so I hope I can cope with such a design. The idea is to force interoperability on VCS in Zone 2 ONLY.

  I take any suggestion of design or configuration of the VCS that guarantees interoperability only on the CV in Zone 2 comes the call from the Zone 1 or Zone 2.

  Thank you for any answer you could provide on any point of this topic, especially if I am wrong on the understanding of the works of interoperability or configuration on VCS.

  Kind regards

  Cécile

  IPv4 - IPv6 interoperability would only happen on a device with IPv4 and IPv6 available-active, then in your diagram, it would be on the VCS in your joint zone (Zone 2), not in IPv6 only area, so it should work as you are eager to.

  Wayne
  --
  Remember the frequency responses and mark your question as answered as appropriate.

• Strange behavior of ISR G2 IPSec

  Hello everyone,

  I have 2911-SEC/K9 router with IOS 151 - 4.M7. I use IPSec + DMVPN. parameters are the following:

  crypto ISAKMP policy 20
  BA aes 256
  Group 24
  invalid-spi-recovery crypto ISAKMP
  ISAKMP crypto keepalive 10

  Crypto ipsec transform-set * value-name * esp - aes 256 esp-sha512-hmac

  Profile of crypto ipsec * profile-name *.
  transform-Set * value-name *.

  int tunnelXXX

  * dmvpn settings *.

  Ipsec-tunnel protection profile * profile-name * shared

  With these settings, I was able to load my string of 100 MB/s only for 15 mb/s and CPU at 99%

  Some strange outputs:

  #sh crypto eli
  Hardware encryption: ASSETS
  Number of hardware encryption engines = 1

  CryptoEngine VPN details aboard: State = Active
  Capacity: IPPCP, OF THE, 3DES, AES, IPv6, GDOI, FAILCLOSE, HA

  IPSec-Session: 0 active, 3200 max, 0 failed

  #sh crypto isakmp his count
  Active safety ISAKMP: 5

  #sh crypto isakmp his

  IPv4 Crypto ISAKMP Security Association
  DST CBC conn-State id
  10.*. *. * 10.*. *. * QM_IDLE 1044 ACTIVE
  10.*. *. * 10.*. *. * QM_IDLE 1045 ACTIVE

  #sh flat REB

  IPSEC           D               D                3         N/A

  Could not encrypt pkts: 0
  Could not decrypt pkts: 0
  Could not encrypt pkt bytes: 0
  Could not decrypt pkt bytes: 0
  Spent encrypt pkts: 5747239
  Past pkts to decrypt: 5750789
  Spent encrypt pkt bytes: 2974407264
  Passed to decrypt pkt bytes: 4220119968

  Therefore, IPSec works, but why sh crypto eli is not show it? Why only 15 mb/s?

  UPD: Same with 881-SEC/K9 and 871

  #sh cry eli
  Hardware encryption: ASSETS
  Number of hardware encryption engines = 1

  CryptoEngine VPN details aboard: State = Active
  Capacity: IPPCP, OF THE, 3DES, AES, IPv6, GDOI, FAILCLOSE

  IPSec-Session: 0 active, max, 100 0 failed

  3945e (nodal point) shows very well:

  Crypto eli HS
  Hardware encryption: ASSETS
  Number of hardware encryption engines = 1

  CryptoEngine VPN details aboard: State = Active
  Capacity: IPPCP, OF THE, 3DES, AES, IPv6, GDOI, FAILCLOSE, HA

  IPSec-Session: 66 active, 6399 max, 0 failed

  All devices using 151 - 4.M7

  You can check my fault see the crypto ipsec his | I run to see if particular flow IPsec is handled by software/hardware/external engine. My * guess * is that sha512 is originally the IPsec flows be managed by software, which is causing the high CPU and poor performance. There are a LOT of questions that I have here, discussing the problems of performance through forums is always tricky... you can check with TAC if you want answers fast and strong.

• WebVPN split and VTI

  Hi all

  We have a router in 1841 with enable webvpn and the split tunneling. This router is also connected to a second office using a VTI. We would like the remote clients of webvpn (using anyconnect) accessing the remote network through VTI.

  Office network 1: 192.168.10.0

  Office 2 (remote) network: 192.168.11.0

  I think split webvpn with tunneling installation is properly install, however I do not know how to get the 192.168.60.0 package (pool dhcp client webvpn) to 192.168.11.0 network.

  Does someone have an idea?

  Kind regards

  Olivier

  Router config:

  interface Tunnel0

  VTI description to the office 2

  192.168.50.1 IP address 255.255.255.0

  source of Dialer1 tunnel

  ipv4 ipsec tunnel mode

  destination 217.x.x.133 tunnel

  tunnel path-mtu-discovery

  protection of profile vti ipsec tunnel

  !

  interface FastEthernet0/0

  LAN Interface Description

  IP address 192.168.10.254 255.255.255.0

  IP nat inside

  IP virtual-reassembly in

  automatic duplex

  automatic speed

  !

  ATM0/0/0 interface

  no ip address

  No atm ilmi-keepalive

  !

  point-to-point interface ATM0/0/0.1

  PVC 8/35

  aal5mux encapsulation ppp Dialer

  Dialer pool-member 1

  !

  !

  interface Dialer1

  Description for ADSL

  the negotiated IP address

  NAT outside IP

  IP virtual-reassembly in

  encapsulation ppp

  Dialer pool 1

  Authentication callin PPP chap Protocol

  PPP chap hostname x

  PPP chap password 7 x

  !

  IP pool local PoolVpnAdsl 192.168.60.1 192.168.60.10

  IP forward-Protocol ND

  !

  IP nat inside source overload map route IspADSL interface Dialer1

  IP route 0.0.0.0 0.0.0.0 Dialer1

  IP route 192.168.11.0 255.255.255.0 192.168.50.2

  !

  exploitation forest esm config

  access-list 10 permit 192.168.10.0 0.0.0.255

  access-list 10 deny all

  access ip-list 100 permit a whole

  Dialer-list 1 ip protocol allow

  !

  allowed IspADSL 1 route map

  corresponds to the IP 10

  match interface Dialer1

  !

  WebVPN gateway GateSslAdsl

  IP address 193.x.x.113 port 443

  redirect http port 80

  SSL trustpoint xxx

  development

  !

  WebVPN context VpnSslAdsl

  SSL authentication check all

  !

  !

  policy_1 political group

  functions compatible svc

  SVC-pool of addresses "PoolVpnAdsl."

  SVC Dungeon-client-installed

  SVC split dns 'domain.dom '.

  SVC split include 192.168.10.0 255.255.255.0

  SVC split include 192.168.11.0 255.255.255.0

  Primary dns 192.168.10.X SVC-Server

  Group Policy - by default-policy_1

  XauthRadius of AAA authentication list.

  Gateway GateSslAdsl

  development

  Hi Olivier,.

  You must change your extended '10' to an ACL ACL

  "access-list 10 permit 192.168.10.0 0.0.0.255.

  Please create an ACL 101 as shown below.

  access-list 101 deny ip 192.168.60.0 0.0.0.255 192.168.11.0 0.0.0.255

  access-list 101 deny ip 192.168.11.0 0.0.0.255 192.168.60.0 0.0.0.255

  access-list 101 permit ip 192.168.10.0 0.0.0.255 any

  Delete this line: IspADSL route map permit 1

  Delete this line: corresponds to the IP 10

  allowed IspADSL 1 route map

  corresponds to the IP 101

  In addition, please make sure you that you have a static route in place other end of TIV to push "192.168.60.0 0.0.0.255.

  Let me know if it helps.

  Thank you

  Post edited by: Mohamed Rizwan

• Windows XP can get the prefix IPv6 over PPPoE?

  Hi all! We can configure Windows 7 and Ubuntu as they get prefix IPv6 and IPv4 address simultaneously (i.e. double stack), but with Windows XP, we have no chance. Windows XP can get the prefix IPv6 over PPPoE?

  Hello

  I suggest you to visit these links.

  Using IPv6 and Teredo.

  http://TechNet.Microsoft.com/en-us/library/bb457042.aspx

  Windows XP networking features and improvements.

  http://TechNet.Microsoft.com/en-us/library/bb457047.aspx

  In the above document, see PPPoE Client and more information see help online Windows XP or the IEEE RFC 2516.

  http://www.ietf.org/RFC/RFC2516.txt?number=2516

  If you have any question, you can post in the TechNet Windows XP forum.

  http://social.technet.Microsoft.com/forums/en-us/itproxpsp/threads

• Counters of ACL for group VPN indicates zero even if there are traffic

  Hi all

  I use a PIX 515E. I defined a remote user VPN, its pool of addresses and also set several ACLs that apply to traffic originating from this address pool of servers on the inside network.

  Does anyone have ideas why the ACL hitcounts remain at zero, even if my remote users always access the servers?

  Thanks for the wisdom!

  Joe

  Joe,

  Your probably using the command "sysopt connection permit-ipsec.

  As quoted in the PIX guide on cisco.com:

  "Use the sysopt connection permit-ipsec command in IPSec configurations to allow IPSec traffic to pass through the PIX firewall without a verification of statements of led command or access-list"

  The list located on the external interface is bypassed by this feature.

• allow icmpv6 in ipv4-access list in the tunnel

  Hello

  I have a little problem with an access list ipv4 blocking my ipv6 tunnel.

  My tunnel works and is as follows:

  interface Tunnel0

  no ip address

  IPv6 address

  enable IPv6

  source of tunnel

  ipv6ip tunnel mode

  tunnel destination

  So when I apply the below, access list to the WAN interface on the sense IN, IPV6 stops working (everything works on IPV4 when the access list is applied). I mean, I cannot ping ipv6.google.com or ipv6.google.coms IP. I can still ping the IP ipv6 remote tunnel ().

  Access list that I apply is the following:

  allow tcp any a Workbench

  allowed UDP any eq field all

  allowed any EQ 67 udp no matter what eq 68

  allowed UDP any eq 123 everything

  allowed UDP any eq 3740 everything

  allowed UDP any eq 41 everything

  allowed UDP any eq 5072 everything

  allow icmp a whole

  deny ip any any newspaper

  Here are the requirements to the supplier of tunnel, and one of the entries is ICMPv6. Is it possible to allow icmp v6 on a Cisco access list?

  TCP 3874	TIC.sixxs.net	IPv4	ICT (Information Tunnel & Control Protocol)	Used to retrieve the information of tunnel (for instance AICCU)	Uses the TCP protocol and should work without problems
  UDP 3740	PoP	IPv4	Heartbeat Protocol	Used for signalling where is the endpoint current IPv4 of the tunnel and he's alive	the user only to pop out
  Protocol 41	PoP	IPv4	IPv6 over IPv4 (6 in 4 tunnel)	Used for tunneling IPv6 over IPv4 (static tunnels + heartbeat)	We have to appoint the internal host as the DMZ host that leaves usually passes the NAT
  UDP 5072	PoP	IPv4	AYIYA (anything in anything)	Used for tunneling IPv6 over IPv4 (AYIYA tunnels)	Must cross most NAT and even firewalls without any problem
  ICMPv6 echo response.	Tunnel endpoints	IPv6	Internet Control Message Protocol for IPv6	Used to test if a tunnel is alive in scathing tunnel endpoint (tunnel: 2) on the side PoP of the tunnel (tunnel: 1) on the tunnel	No, because it is happening inside the tunnel

  I missed something?

  sidequestion: I added the "deny ip any any newspaper" in the access list, but it adds no registration entry in the log (show log). I'm sure it hits because when I run "display lists access": 110 deny ip any any newspaper (2210 matches).

  Hope someone can help me.

  Hello

  In the ACL above you are atleast specifying source and destination UDP and 41 SOURCE ports

  If you specify IPv6 over an IPv4 ACL I guess that the format would be to "allow 41 a whole" for example.

  Although I have barely touched IPv6 myself yet. Wouldn't it be possible to configure ACL Ipv4 and IPv6 ACL and attach them to the same interface?

  But looking at my own router it does not support these commands so that other devices to make. Maybe something related model/software I guess.

  -Jouni