IPSEC + GRE at Cisco 3925

Similar Questions

• DMVPN/IPSEC, GRE and IPSEC Multi Point

  Hi all

  I have a project of construction of 50 locations connectivity to my data center 2. Each location has Internet with router 877 with image dry.

  my DC has 1900 router. Now I want what tunnel I go with. DMVPN IPSEC or IPSEC GRE.

  The data will come from DC locations only. No inter connections location. I want to know the pros and cons as well as any change of required equipment.

  Kind regards

  Satya.M

  Given your criteria, I would say THAT DMVPN would be best suited

  Cisco - Configuration dynamic Multipoint Virtual Private Networks DMVPN

  Implementation in DMVPN GDOI

  Pete

• basic configuration question IPSec GRE

  

  the Sub test config has been entered at R1 (router left mostly). R4 has a similar to the inverse IP address config. R1 is able to ping R4 loopback at the present time.

  crypto ISAKMP policy 10
  BA aes
  preshared authentication
  Group 2
  life 120
  address of cisco crypto isakmp 203.115.34.4 keys
  !
  !
  Crypto ipsec transform-set MY_TRANSFORM ah-sha-hmac esp - aes
  !
  MY_MAP 10 ipsec-isakmp crypto map
  defined by peer 203.115.34.4
  game of transformation-MY_TRANSFORM
  match address 100
  !
  !
  !
  !
  interface Loopback0
  192.168.10.1 IP address 255.255.255.255
  !
  interface Tunnel0
  IP 192.168.14.1 255.255.255.0
  source of tunnel Serial1/2
  tunnel destination 203.115.34.4
  card crypto MY_MAP

  !

  !
  interface Serial1/2
  IP 203.115.12.1 255.255.255.0
  series 0 restart delay
  !
  !
  Router eigrp 100
  network 192.168.0.0 0.0.255.255
  Auto-resume
  !
  router ospf 100
  router ID 1.1.1.1
  Log-adjacency-changes
  network 203.115.0.0 0.0.255.255 area 0
  !

  !

  access-list 100 permit ip 192.168.0.0 0.0.255.255 192.168.0.0 0.0.255.255 connect

  !

  !

  I see cisco samples configurations include an access list entry as follows...

  access-list 100 permit gre 203.115.12.1 host 203.115.34.4

  I understand the purpose of the ACL above regarding the test configuration that I posted here.

  Let me explain.

  LAN - router - WAN - router - LAN

  Communication between the two LANs can be on a GRE tunnel to an IPsec tunnel or IPsec/GRE tunnel.

  If you simply want to communicate between them unicast IP traffic, IPsec is recommended because it will encrypt the traffic.

  If you need non-unicast or non - IP traffic through, then you can create a GRE tunnel.

  If you want IPsec encryption for the GRE tunnel and then configure IPsec/GRE.

  The ACL you mention will not work because the GRE traffic is only between tunnel endpoints.

  The traffic that flows between local networks is the IP (not the GRE traffic) traffic where a permit GRE ACL will not work.

  It will be useful.

  Federico.

• GRE tunnels will not come on VPN IPsec/GRE

  Hi all

  We have 400 + remote sites that connect to our central location (and a backup site) using Cisco routers with vpn IPSec/GRE tunnels.  We use a basic model for the creation of tunnels, so there is very little chance of a bad configuration on each router.  Remote sites use Cisco 831 s, central sites use Cisco 2821 s.  There is a site where the tunnels WILL refuse just to come.

  Routers are able to ping their public IP addresses, so it is not a routing problem, but gre endpoints cannot ping.  There is no NATing involved, two routers directly accessing the Internet.  The assorded display orders seem to indicate that the SAs are properly built, but newspapers, it seems that last part just don't is finished, and the GRE tunnels come not only upward.

  The attached log file, it seems that both its IPSEC & ISAKMP are created @ 00:25:14, then QM_PHASE2 end @ 00:25:15.

  00:25:15: ISAKMP: (0:10:HW:2): node error 1891573546 FALSE reason for deletion "(wait) QM.
  00:25:15: ISAKMP: (0:10:HW:2): entrance, node 1891573546 = IKE_MESG_FROM_PEER, IKE_QM_EXCH
  00:25:15: ISAKMP: (0:10:HW:2): former State = new State IKE_QM_R_QM2 = IKE_QM_PHASE2_COMPLETE
  00:25:15: ISAKMP (0:268435467): received 208.XX packet. Dport 500 sport Global 500 (I) QM_IDLE yy.11
     
  00:25:15: IPSEC (key_engine): had an event of the queue with 1 kei messages
  00:25:15: IPSEC (key_engine_enable_outbound): rec would prevent ISAKMP
  00:25:15: IPSEC (key_engine_enable_outbound): select SA with spinnaker 1572231461/50
  00:25:15: ISAKMP: (0:11:HW:2): error in node-1931380074 FALSE reason for deletion "(wait) QM.
  00:25:15: ISAKMP: (0:11:HW:2): entrance, node-1931380074 = IKE_MESG_FROM_PEER, IKE_QM_EXCH
  00:25:15: ISAKMP: (0:11:HW:2): former State = new State IKE_QM_R_QM2 = IKE_QM_PHASE2_COMPLETE
  00:25:15: IPSEC (key_engine): had an event of the queue with 1 kei messages
  00:25:15: IPSEC (key_engine_enable_outbound): rec would prevent ISAKMP
  00:25:15: IPSEC (key_engine_enable_outbound): select SA with spinnaker 310818168/50

  I don't have the remote router log file, and is very long, so I joined her.  Before that I captured the log file, I enabled debugging ipsec & isakmp and immediately authorized the SAs.

  Assorted useful details and matching orders of show results:

  Cisco IOS Software, C831 (C831-K9O3SY6-M), Version 12.4 (25), RELEASE SOFTWARE (fc1)

  There are 2 connections of IPSEC/GRE tunnel:

  Tunnel101: KC (208.YY. ZZ.11) - remote control (74.WW. XX.35)
  Tunnel201: Dallas (208.XX. YY.11) - remote control (74.WW. XX.35)

  Site-382-831 #sho ip int br
  Interface IP-Address OK? Method State Protocol
  FastEthernet1 unassigned YES unset down down
  FastEthernet2 unassigned YES unset upward, upward
  FastEthernet3 unassigned YES unset upward, upward
  FastEthernet4 unassigned YES unset upward, upward
  Ethernet0 10.3.82.10 YES NVRAM up up
  Ethernet1 74.WW. XX.35 YES NVRAM up up
  Ethernet2 172.16.1.10 YES NVRAM up up
  Tunnel101 1.3.82.46 YES NVRAM up toward the bottom<>
  Tunnel201 1.3.82.62 YES NVRAM up toward the bottom<====  ="">
  NVI0 unassigned don't unset upward upwards

  Site-382-831 #.
  Site-382-831 #sho run int tunnel101
  Building configuration...

  Current configuration: 277 bytes
  !
  interface Tunnel101
  Description % connected to the 2nd KC BGP 2821 - PRI - B
  IP 1.3.82.46 255.255.255.252
  IP mtu 1500
  IP virtual-reassembly
  IP tcp adjust-mss 1360
  KeepAlive 3 3
  source of tunnel Ethernet1
  destination of the 208.YY tunnel. ZZ.11
  end

  Site-382-831 #.

  Site-382-831 #show isakmp crypto his
  status of DST CBC State conn-id slot
  208.XX. YY.11 74.WW. XX.35 QM_IDLE ASSETS 0 11
  208.YY. ZZ.11 74.WW. XX.35 QM_IDLE 10 0 ACTIVE
  Site-382-831 #.

  Site-382-831 #.
  Site-382-831 #show detail of the crypto isakmp
  Code: C - IKE configuration mode, D - Dead Peer Detection
  NAT-traversal - KeepAlive, N - K
  X - IKE extended authentication
  PSK - GIPR pre-shared key - RSA signature
  renc - RSA encryption

  C - id Local Remote I have VRF status BA hash Auth DH lifetime limit.
  11 74.WW. XX.35 208.XX. YY.11 ACTIVE 3des sha psk 1 23:56:09
  Connection-id: motor-id = 11:2 (hardware)
  74.WW 10. XX.35 208.YY. ZZ.11 ACTIVE 3des sha psk 1 23:56:09
  Connection-id: motor-id = 10:2 (hardware)
  Site-382-831 #.

  Site-382-831 #.
  Site-382-831 #show crypto ipsec his

  Interface: Ethernet1
  Tag crypto map: IPVPN_MAP, local addr 74.WW. XX.35

  protégé of the vrf: (none)
  ident (addr, mask, prot, port) local: (74.WW. XX.35/255.255.255.255/47/0)
  Remote ident (addr, mask, prot, port): (208.YY. ZZ.11/255.255.255.255/47/0)
  current_peer 208.YY. ZZ.11 port 500
  LICENCE, flags is {origin_is_acl},
  #pkts program: 2333, #pkts encrypt: 2333, #pkts digest: 2333
  #pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  #send 21, #recv errors 0

  local crypto endpt. : 74.WW. XX.35, remote Start crypto. : 208.YY. ZZ.11
  Path mtu 1500, mtu 1500 ip, ip mtu IDB Ethernet1
  current outbound SPI: 0x45047D1D (1157922077)

  SAS of the esp on arrival:
  SPI: 0x15B97AEA (364477162)
  transform: esp-3des esp-sha-hmac.
  running parameters = {Tunnel}
  Conn ID: 2004, flow_id: C83X_MBRD:4, crypto card: IPVPN_MAP
  calendar of his: service life remaining (k/s) key: (4486831/1056)
  Size IV: 8 bytes
  support for replay detection: Y
  Status: ACTIVE

  the arrival ah sas:

  SAS of the CFP on arrival:

  outgoing esp sas:
  SPI: 0x45047D1D (1157922077)
  transform: esp-3des esp-sha-hmac.
  running parameters = {Tunnel}
  Conn ID: 2003, flow_id: C83X_MBRD:3, crypto card: IPVPN_MAP
  calendar of his: service life remaining (k/s) key: (4486744/1056)
  Size IV: 8 bytes
  support for replay detection: Y
  Status: ACTIVE

  outgoing ah sas:

  outgoing CFP sas:

  protégé of the vrf: (none)
  ident (addr, mask, prot, port) local: (74.WW. XX.35/255.255.255.255/47/0)
  Remote ident (addr, mask, prot, port): (208.XX. YY.11/255.255.255.255/47/0)
  current_peer 208.XX. YY.11 port 500
  LICENCE, flags is {origin_is_acl},
  #pkts program: 2333, #pkts encrypt: 2333, #pkts digest: 2333
  #pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  #send 21, #recv errors 0

  local crypto endpt. : 74.WW. XX.35, remote Start crypto. : 208.XX. YY.11
  Path mtu 1500, mtu 1500 ip, ip mtu IDB Ethernet1
  current outbound SPI: 0xE82A86BC (3895101116)

  SAS of the esp on arrival:
  SPI: 0x539697CA (1402378186)
  transform: esp-3des esp-sha-hmac.
  running parameters = {Tunnel}
  Conn ID: 2008, flow_id: C83X_MBRD:8, crypto card: IPVPN_MAP
  calendar of his: service life remaining (k/s) key: (4432595/1039)
  Size IV: 8 bytes
  support for replay detection: Y
  Status: ACTIVE

  the arrival ah sas:

  SAS of the CFP on arrival:

  outgoing esp sas:
  SPI: 0xE82A86BC (3895101116)
  transform: esp-3des esp-sha-hmac.
  running parameters = {Tunnel}
  Conn ID: 2001, flow_id: C83X_MBRD:1, crypto card: IPVPN_MAP
  calendar of his: service life remaining (k/s) key: (4432508/1039)
  Size IV: 8 bytes
  support for replay detection: Y
  Status: ACTIVE

  outgoing ah sas:

  outgoing CFP sas:
  Site-382-831 #.

  Site-382-831 #.
  Site-382-831 #show crypto ipsec his | Pkts Inc. | life
  #pkts program: 2397, #pkts encrypt: 2397, #pkts digest: 2397
  #pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  calendar of his: service life remaining (k/s) key: (4486831/862)
  calendar of his: service life remaining (k/s) key: (4486738/862)
  #pkts program: 2397, #pkts encrypt: 2397, #pkts digest: 2397
  #pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  calendar of his: service life remaining (k/s) key: (4432595/846)
  calendar of his: service life remaining (k/s) key: (4432501/846)
  Site-382-831 #.

  Site-382-831 #.
  Site-382-831 #show crypto isakmp policy

  World IKE policy
  Priority protection Suite 10
  encryption algorithm: three key triple a
  hash algorithm: Secure Hash Standard
  authentication method: pre-shared Key
  Diffie-Hellman group: #1 (768 bits)
  lifetime: 86400 seconds, no volume limit
  Default protection suite
  encryption algorithm: - Data Encryption STANDARD (56-bit keys).
  hash algorithm: Secure Hash Standard
  authentication method: Rivest-Shamir-Adleman Signature
  Diffie-Hellman group: #1 (768 bits)
  lifetime: 86400 seconds, no volume limit
  Site-382-831 #.

  Site-382-831 #show crypto card
  "IPVPN_MAP" 101-isakmp ipsec crypto map
  Description: at the 2nd KC BGP 2821 - PRI - B
  Peer = 208.YY. ZZ.11
  Extend the PRI - B IP access list
  access list PRI - B allowed will host 74.WW. XX.35 the host 208.YY. ZZ.11
  Current counterpart: 208.YY. ZZ.11
  Life safety association: 4608000 Kbytes / 3600 seconds
  PFS (Y/N): N
  Transform sets = {}
  IPVPN,
  }

  "IPVPN_MAP" 201-isakmp ipsec crypto map
  Description: 2nd Dallas BGP 2821 - s-B
  Peer = 208.XX. YY.11
  Expand the list of IP SEC-B access
  s - B allowed will host 74.WW access list. XX.35 the host 208.XX. YY.11
  Current counterpart: 208.XX. YY.11
  Life safety association: 4608000 Kbytes / 3600 seconds
  PFS (Y/N): N
  Transform sets = {}
  IPVPN,
  }
  Interfaces using crypto card IPVPN_MAP:
  Ethernet1
  Site-382-831 #.

  Tunnel between KC & the remote site configuration is:

  Distance c831 - KC

  crypto ISAKMP policy 10
  BA 3des
  preshared authentication
  !
  PRI-B-382 address 208.YY isakmp encryption key. ZZ.11
  !
  Crypto ipsec transform-set esp-3des esp-sha-hmac IPVPN
  transport mode
  !
  IPVPN_MAP 101 ipsec-isakmp crypto map
  Description of 2nd KC BGP 2821 - PRI - B
  set of peer 208.YY. ZZ.11
  game of transformation-IPVPN
  match address PRI - B
  !
  interface Tunnel101
  Description % connected to the 2nd KC BGP 2821 - PRI - B
  IP 1.3.82.46 255.255.255.252
  IP mtu 1500
  KeepAlive 3 3
  IP virtual-reassembly
  IP tcp adjust-mss 1360
  source of tunnel Ethernet1
  destination of the 208.YY tunnel. ZZ.11
  !
  interface Ethernet0
  private network Description
  IP 10.3.82.10 255.255.255.0
  IP mtu 1500
  no downtime
  !
  interface Ethernet1
  IP 74.WW. XX.35 255.255.255.248
  IP mtu 1500
  automatic duplex
  IP virtual-reassembly
  card crypto IPVPN_MAP
  no downtime
  !
  PRI - B extended IP access list
  allow accord 74.WW the host. XX.35 the host 208.YY. ZZ.11
  !

  KC-2821 *.

  PRI-B-382 address 74.WW isakmp encryption key. XX.35
  !
  PRI-B-382 extended IP access list
  allow accord 208.YY the host. ZZ.11 the host 74.WW. XX.35
  !
  IPVPN_MAP 382 ipsec-isakmp crypto map
  Description % connected to the 2nd KC BGP 2821
  set of peer 74.WW. XX.35
  game of transformation-IPVPN
  match address PRI-B-382
  !
  interface Tunnel382
  Description %.
  IP 1.3.82.45 255.255.255.252
  KeepAlive 3 3
  IP virtual-reassembly
  IP tcp adjust-mss 1360
  IP 1400 MTU
  delay of 40000
  tunnel of 208.YY origin. ZZ.11
  destination of the 74.WW tunnel. XX.35
  !
  end

  Any help would be much appreciated!

  Mark

  Hello

  logs on Site-382-831, only see the crypt but none decrypts, could you check a corresponding entry on the peer and see if has any questions send return traffic?

  Site-382-831 #show crypto ipsec his | Pkts Inc. | life
  #pkts program: 2397, #pkts encrypt: 2397, #pkts digest: 2397
  #pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  calendar of his: service life remaining (k/s) key: (4486831/862)
  calendar of his: service life remaining (k/s) key: (4486738/862)
  #pkts program: 2397, #pkts encrypt: 2397, #pkts digest: 2397
  #pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
  compressed #pkts: 0, unzipped #pkts: 0
  #pkts uncompressed: 0, #pkts compr. has failed: 0
  #pkts not unpacked: 0, #pkts decompress failed: 0
  calendar of his: service life remaining (k/s) key: (4432595/846)
  calendar of his: service life remaining (k/s) key: (4432501/846)
  Site-382-831 #.

  Kind regards

  Averroès.

• question of LAN IPSec/gre

  Hi guys,.

  I'm trying to connect 2 1841 routers using ipsec/gre.

  the situation is as below:

  router a router - Internet - b

  router config:

  crypto ISAKMP policy 1
  BA 3des
  preshared authentication
  Group 2
  ISAKMP crypto key cisco address bb.bb.bb.bb

  Crypto ipsec transform-set esp-3des esp-md5-hmac TFMset
  !
  Profile of crypto ipsec ToB
  game of transformation-TFMset

  !

  interface Tunnel0
  Description * to B *.
  IP 100.100.100.1 255.255.255.252
  tunnel source aa.aa.aa.aa
  destination bb.bb.bb.bb tunnel
  ipv4 ipsec tunnel mode
  Profile of tunnel ToB ipsec protection

  interface FastEthernet0/0
  IP address aa.aa.aa.aa 255.255.255.252
  NAT outside IP
  !
  interface FastEthernet0/1
  11.11.11.11 IP address 255.255.255.0
  IP nat inside

  IP route 0.0.0.0 0.0.0.0 FastEthernet0/0

  IP nat inside source map route SHEEP interface FastEthernet0/0 overload

  IPNAT extended IP access list
  deny ip 11.11.11.0 0.0.0.255 22.22.22.0 0.0.0.255
  IP 11.11.11.0 allow 0.0.0.255 any
  !
  SHEEP allowed 10 route map
  corresponds to the IP IPNAT

  Config router B:

  crypto ISAKMP policy 1
  BA 3des
  preshared authentication
  Group 2
  ISAKMP crypto key cisco address aa.aa.aa.aa

  Crypto ipsec transform-set esp-3des esp-md5-hmac TFMset
  !
  Profile of crypto ipsec ToA
  game of transformation-TFMset

  !

  interface Tunnel0
  Description * to A *.
  IP 100.100.100.1 255.255.255.252
  tunnel source bb.bb.bb.bb
  destination aa.aa.aa.aa tunnel
  ipv4 ipsec tunnel mode
  Profile of tunnel ToA ipsec protection

  interface FastEthernet0/0
  IP address bb.bb.bb.bb 255.255.255.252
  NAT outside IP
  !
  interface FastEthernet0/1
  IP 22.22.22.22 255.255.255.0
  IP nat inside

  IP route 0.0.0.0 0.0.0.0 FastEthernet0/0

  IP nat inside source map route SHEEP interface FastEthernet0/0 overload

  IPNAT extended IP access list

  deny ip 22.22.22.0 0.0.0.255 11.11.11.0 0.0.0.255

  IP 22.22.22.0 allow 0.0.0.255 any

  !

  SHEEP allowed 10 route map

  corresponds to the IP IPNAT

  I managed to see the crypto isakmp and tunnel upward, but I'm not able to ping to the Remote LAN ip...

  have you guys any idea on this?

  Thank you...

  Hello

  Try to create a static route on a router for remote network pointing to the source of the tunnel as its front door.

  Here is a useful link: -.

  https://learningnetwork.Cisco.com/docs/doc-2457

  Thank you

  Shilpa

• IPSec VPN between Cisco ASA and Fortigate1000

  Hello

  I find a useful document on how to create a tunnel VPN IPSec with ASA 5510 firewall Fortigate 1000...

  the configuration of the coast FG is done without any problem, BUT the document (. doc FG) said I must configure the ASA with a GRE interface and assign an internal IP address in order to communicate with the FG...

  The question is: How do I configure the interface on the SAA ACCORD?

  Thanks in advance, Experts...

  Kind regards...

  ASA firewall does not support the interface/GRE GRE tunnel.

  If you need to have GRE configured, you will need to complete the GRE tunnel on router IOS.

  If you want to configure just pure tunnel VPN IPSec (lan-to-lan), here is an example of configuration on the side of the ASA:

  http://www.Cisco.com/en/us/products/ps6120/products_configuration_example09186a0080950890.shtml

  Hope that helps.

• How to disable a particular IPSec tunnel on Cisco router

  Hi guys,.

  Someone knows a way to termporarily disable an IPSec tunnel on a Cisco router provided individual:

  -No configuration changes

  -Without affecting the other IPSec tunnels running

  -GRE is not used, so there is no tunnel interface to close

  Or in any event nearest to you to meet the requirement above?

  Thank you

  Andrew

  Andrew,

  There is no way to 'turn off' the tunnel without changing the config.

  I think the easiest would be to get the card crypto for this particular tunnel and remove the peer or the ACL:

  for example:

  labmap 10 ipsec-isakmp crypto map

  no counterpart set 10.0.0.1

  labmap 10 ipsec-isakmp crypto map

  no correspondence address 100

  or you can remove the key isakmp for this tunnel, that would, for example:

  No cisco123 key crypto isakmp 10.0.0.1 address

  That would prevent the tunnel to come without affecting the other tunnels.

  I hope this helps.

  Raga

• ISA500 site by site ipsec VPN with Cisco IGR

  Hello

  I tried a VPN site by site work with Openswan and Cisco 2821 router configuration an Ipsec tunnel to site by site with Cisco 2821 and ISA550.

  But without success.

  my config for openswan, just FYI, maybe not importand for this problem

  installation of config

  protostack = netkey

  nat_traversal = yes

  virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%4:!$RIGHT_SUBNET

  nhelpers = 0

  Conn rz1

  IKEv2 = no

  type = tunnel

  left = % all

  leftsubnet=192.168.5.0/24

  right =.

  rightsourceip = 192.168.1.2

  rightsubnet=192.168.1.0/24

  Keylife 28800 = s

  ikelifetime 28800 = s

  keyingtries = 3

  AUTH = esp

  ESP = aes128-sha1

  KeyExchange = ike

  authby secret =

  start = auto

  IKE = aes128-sha1; modp1536

  dpdaction = redΘmarrer

  dpddelay = 30

  dpdtimeout = 60

  PFS = No.

  aggrmode = no

  Config Cisco 2821 for dynamic dialin:

  crypto ISAKMP policy 1

  BA aes

  sha hash

  preshared authentication

  Group 5

  lifetime 28800

  !

  card crypto CMAP_1 1-isakmp dynamic ipsec DYNMAP_1

  !

  access-list 102 permit ip 192.168.1.0 0.0.0.255 192.168.5.0 0.0.0.255

  !

  Crypto ipsec transform-set ESP-AES-SHA1 esp - aes esp-sha-hmac

  crypto dynamic-map DYNMAP_1 1

  game of transformation-ESP-AES-SHA1

  match address 102

  !

  ISAKMP crypto key address 0.0.0.0 0.0.0.0

  ISAKMP crypto keepalive 30 periodicals

  !

  life crypto ipsec security association seconds 28800

  !

  interface GigabitEthernet0/0.4002

  card crypto CMAP_1

  !

  I tried ISA550 a config with the same constelations, but without suggesting.

  Anyone has the same problem?

  And had anyone has a tip for me, or has someone expirense with a site-by-site with ISA550 and Cisco 2821 ipsec tunnel?

  I can successfully establish a tunnel between openswan linux server and the isa550.

  Patrick,

  as you can see on newspapers, the software behind ISA is also OpenSWAN

  I have a facility with a 892 SRI running which should be the same as your 29erxx.

  Use your IOS Config dynmap, penny, you are on the average nomad. If you don't have any RW customer you shoul go on IOS "No.-xauth" after the isakmp encryption key.

  Here is my setup, with roardwarrior AND 2, site 2 site.

  session of crypto consignment

  logging crypto ezvpn

  !

  crypto ISAKMP policy 1

  BA 3des

  preshared authentication

  Group 2

  lifetime 28800

  !

  crypto ISAKMP policy 2

  BA 3des

  md5 hash

  preshared authentication

  Group 2

  lifetime 28800

  !

  crypto ISAKMP policy 3

  BA 3des

  preshared authentication

  Group 2

  !

  crypto ISAKMP policy 4

  BA 3des

  md5 hash

  preshared authentication

  Group 2

  !

  crypto ISAKMP policy 5

  BA 3des

  preshared authentication

  Group 2

  life 7200

  ISAKMP crypto address XXXX XXXXX No.-xauth key

  XXXX XXXX No.-xauth address isakmp encryption key

  !

  ISAKMP crypto client configuration group by default

  key XXXX

  DNS XXXX

  default pool

  ACL easyvpn_client_routes

  PFS

  !

  !

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

  !

  dynamic-map crypto VPN 20

  game of transformation-FEAT

  market arriere-route

  !

  !

  card crypto client VPN authentication list by default

  card crypto VPN isakmp authorization list by default

  crypto map VPN client configuration address respond

  10 VPN ipsec-isakmp crypto map

  Description of VPN - 1

  defined peer XXX

  game of transformation-FEAT

  match the address internal_networks_ipsec

  11 VPN ipsec-isakmp crypto map

  VPN-2 description

  defined peer XXX

  game of transformation-FEAT

  PFS group2 Set

  match the address internal_networks_ipsec2

  card crypto 20-isakmp dynamic VPN ipsec VPN

  !

  !

  Michael

  Please note all useful posts

• IPSec Tunnel between Cisco 2801 and Netscren 50 with NAT and static

  Hello

  My problem isn't really the IPSec connection between two devices (it is already done...) But my problem is that I have a mail server on the site of Cisco, who have a static NAT from inside to outside. Due to the static NAT, I do not see the server in the VPN tunnel. I found a document that almost describes the problem:

  "Configuration of a router IPSEC Tunnel private-to-private network with NAT and static" (Document ID 14144)

  NAT takes place before the encryption verification!

  In this document, the solution is 'routing policy' using the loopback interface. But, how can I handle this with the Netscreen firewall. Someone has an idea?

  Thanks for any help

  Best regards

  Heiko

  Hello

  Try to change your static NAT with static NAT based policy.

  That is to say the static NAT should not be applicable for VPN traffic

  permissible static route map 1

  corresponds to the IP 104

  access-list 104 refuse host ip 10.1.110.10 10.1.0.0 255.255.0.0

  access-list 104 allow the host ip 10.1.110.10 all

  IP nat inside source static 10.1.110.10 81.222.33.90 map of static route

  HTH

  Kind regards

  GE.

• IPsec VPN with Cisco AnyConnect and 1921 ISR G2 router

  Hello

  Is it possible to establish a remote access VPN IPSec using Cisco Anyconnect client with router Cisco ISR G2 1921.

  If someone does share it please the sample configuration. as I've been on this topic since last week a.

  My Cisco rep recommended I have not try AnyConnect a router ISR or ASR.  So I used an Open Source client.  Don't say that AnyConnect won't work, just the route I took on my project.  I work good known configuration for a 1921 with strongSwan as a Client.  It is with IPSEC and IKEV2 using certificates for authentication.

• IPsec tunnel on cisco 3750 Switch

  Guys... I just wanted to know, is - it possible to configure/close the tunnel vpn ipsec on cisco switch 3750.

  Thanks in advance.

  NO u cant, you can on CAT 6500 with VPN module!

• PIX IPSec VPN with Cisco 877W

  Hi all

  I am trying to create a VPN between a PIX and a Cisco 877W tunnel but can't seem to get the tunnel. When I do a 'sho crypto session"on the Cisco 877, I get, he said session state is declining, then changed to NEGOTIATE DOWN, but it is now down again... Please find attached the configs for both ends... Are there commands to confirm that the tunnel is up other than to try to ping the remote end? I would greatly appreciate any help lift this tunnel.

  Kind regards

  REDA

  Hello

  Based on the configurations of joined, to do some changes. For example:

  1. the isakmp policies do not match on the router and the pix. Make sure the hash group Diffie-Hellman and life correspond on the 877 and pix.

  2. the access list for the ipsec traffic must be images of mirror of the other.

  3. make sure life of ipsec on the two peers.

  I hope it helps.

  Kind regards

  Arul

  Rate if this can help.

• The IOS IPSec VPN configuration Cisco router

  Hi experts,

  I have not configured the VPN for a long time on the routers so I want your recommendation on best practices.

  I need to run OSPF over it, so it must be GRE over IPSec

  I googled and I see the old type of config that I used to do with the use of the crypto map. Then I see config with profile Ipsec that is applied to the interface of tunnel (tunnel protection). I also see on the manual on isakmp profile...

  Is there an example of configuration that you can provide? This is site to site VPN with PAT most basic on the interface for the remote desktop for surfing the Internet. My routers are fairly recent. One is 2821 with new 12.4 T code and another 2921 router.

  Thank you

  Hello!

  I didn't have a corresponding exactly to your needs, but I did a. I set it up by hand while there might be errors in config.

• IPSec VPN between Cisco and ScreenOS

  Hello

  I'm trying to set up a simple IPSec VPN between a Cisco 2911 router and a Juniper Netscreen ScreenOS (not exactly now the model) device. Initially the debbuging seems good (QM_IDLE), but the ISAKMP Security Association is deleted.

  The guy managing the Juniper device send me an extract from his diary:

  ###########################################################################

  2012-08-28 10:24:16 info 00536 IKE Phase 2 msg ID System

  9b 839579: negotiations failed.

  2012-08-28 10:24:16 info system 00536 rejected a package of IKE loopback.11

  of : 500 to

  217.150.152.45:500 with cookies

  87960e39d074ca49 and 9302d26c7ce324a5

  because there is no acceptable Phase

  2 proposals...

  It has defined the following phase 2 proposals:

  IKE the value p2-proposal "G2_esp_aes256_sha_1800s" group2 esp aes256-sha-1, 1800 second

  ###########################################################################

  And I use these:

  ###########################################################################

  crypto ISAKMP policy 1

  BA aes 256

  preshared authentication

  Group 2

  !

  ISAKMP crypto key address 217.150.152.45

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

  card crypto ipsec vpn 2 isakmp

  Description * VPN Anbindung nach PKI in Magdeburg *.

  defined by peer 217.150.152.45

  define security-association life seconds 1800

  the value of the transform-set esp - aes

  match address PKI-TRAFFIC

  !

  ###########################################################################

  Here is my Log:

  #################################################################################################################

  28 August 08:23:46.416: ISAKMP: (0): profile of THE request is (NULL)

  28 August 08:23:46.416: ISAKMP: created a struct peer 217.150.152.45, peer port 500

  28 August 08:23:46.416: ISAKMP: new position created post = 0x2A2D7150 peer_handle = 0x8000003A

  28 August 08:23:46.416: ISAKMP: lock struct 0x2A2D7150, refcount 1 to peer isakmp_initiator

  28 August 08:23:46.416: ISAKMP: 500 local port, remote port 500

  28 August 08:23:46.416: ISAKMP: set new node 0 to QM_IDLE

  28 August 08:23:46.416: ISAKMP: (0): insert his with his 31627E04 = success

  28 August 08:23:46.416: ISAKMP: (0): cannot start aggressive mode, try the main mode.

  28 August 08:23:46.416: ISAKMP: (0): pair found pre-shared key matching 217.150.152.45

  28 August 08:23:46.416: ISAKMP: (0): built of NAT - T of the seller-rfc3947 ID

  28 August 08:23:46.416: ISAKMP: (0): built the seller-07 ID NAT - t

  28 August 08:23:46.416: ISAKMP: (0): built of NAT - T of the seller-03 ID

  28 August 08:23:46.416: ISAKMP: (0): built the seller-02 ID NAT - t

  28 August 08:23:46.416: ISAKMP: (0): entry = IKE_MESG_FROM_IPSEC, IKE_SA_REQ_MM

  28 August 08:23:46.416: ISAKMP: (0): former State = new State IKE_READY = IKE_I_MM1

  28 August 08:23:46.416: ISAKMP: (0): Beginner Main Mode Exchange

  28 August 08:23:46.416: ISAKMP: (0): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) MM_NO_STATE

  28 August 08:23:46.416: ISAKMP: (0): sending a packet IPv4 IKE.

  28 August 08:23:46.448: ISAKMP (0): received 217.150.152.45 packet dport 500 sport Global 500 (I) MM_NO_STATE

  28 August 08:23:46.448: ISAKMP: (0): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

  28 August 08:23:46.448: ISAKMP: (0): former State = new State IKE_I_MM1 = IKE_I_MM2

  28 August 08:23:46.448: ISAKMP: (0): treatment ITS payload. Message ID = 0

  28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

  28 August 08:23:46.448: ISAKMP: (0): provider ID seems the unit/DPD but major incompatibility of 239

  28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

  28 August 08:23:46.448: ISAKMP: (0): provider ID is DPD

  28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

  28 August 08:23:46.448: ISAKMP: (0): IKE frag vendor processing id payload

  28 August 08:23:46.448: ISAKMP: (0): IKE Fragmentation support not enabled

  28 August 08:23:46.448: ISAKMP: (0): pair found pre-shared key matching 217.150.152.45

  28 August 08:23:46.448: ISAKMP: (0): pre-shared key local found

  28 August 08:23:46.448: ISAKMP: analysis of the profiles for xauth...

  28 August 08:23:46.448: ISAKMP: (0): audit ISAKMP transform 1 against the policy of priority 1

  28 August 08:23:46.448: ISAKMP: AES - CBC encryption

  28 August 08:23:46.448: ISAKMP: SHA hash

  28 August 08:23:46.448: ISAKMP: group by default 2

  28 August 08:23:46.448: ISAKMP: pre-shared key auth

  28 August 08:23:46.448: ISAKMP: keylength 256

  28 August 08:23:46.448: ISAKMP: type of life in seconds

  28 August 08:23:46.448: ISAKMP: life (IPV) 0 x 0 0 x 1 0 x 51 0x80

  28 August 08:23:46.448: ISAKMP: (0): atts are acceptable. Next payload is 0

  28 August 08:23:46.448: ISAKMP: (0): Acceptable atts: real life: 0

  28 August 08:23:46.448: ISAKMP: (0): Acceptable atts:life: 0

  28 August 08:23:46.448: ISAKMP: (0): fill atts in his vpi_length:4

  28 August 08:23:46.448: ISAKMP: (0): fill atts in his life_in_seconds:86400

  28 August 08:23:46.448: ISAKMP: (0): return real life: 86400

  28 August 08:23:46.448: ISAKMP: (0): timer life Started: 86400.

  28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

  28 August 08:23:46.448: ISAKMP: (0): provider ID seems the unit/DPD but major incompatibility of 239

  28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

  28 August 08:23:46.448: ISAKMP: (0): provider ID is DPD

  28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

  28 August 08:23:46.448: ISAKMP: (0): IKE frag vendor processing id payload

  28 August 08:23:46.448: ISAKMP: (0): IKE Fragmentation support not enabled

  28 August 08:23:46.448: ISAKMP: (0): entry = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

  28 August 08:23:46.448: ISAKMP: (0): former State = new State IKE_I_MM2 = IKE_I_MM2

  28 August 08:23:46.448: ISAKMP: (0): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) MM_SA_SETUP

  28 August 08:23:46.448: ISAKMP: (0): sending a packet IPv4 IKE.

  28 August 08:23:46.452: ISAKMP: (0): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

  28 August 08:23:46.452: ISAKMP: (0): former State = new State IKE_I_MM2 = IKE_I_MM3

  28 August 08:23:46.484: ISAKMP (0): received 217.150.152.45 packet dport 500 sport Global 500 (I) MM_SA_SETUP

  28 August 08:23:46.484: ISAKMP: (0): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

  28 August 08:23:46.484: ISAKMP: (0): former State = new State IKE_I_MM3 = IKE_I_MM4

  28 August 08:23:46.484: ISAKMP: (0): processing KE payload. Message ID = 0

  28 August 08:23:46.508: ISAKMP: (0): processing NONCE payload. Message ID = 0

  28 August 08:23:46.508: ISAKMP: (0): pair found pre-shared key matching 217.150.152.45

  28 August 08:23:46.508: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

  28 August 08:23:46.508: ISAKMP: (1049): former State = new State IKE_I_MM4 = IKE_I_MM4

  28 August 08:23:46.508: ISAKMP: (1049): send initial contact

  28 August 08:23:46.508: ISAKMP: (1049): ITS been pre-shared key, using id ID_IPV4_ADDR type authentication

  28 August 08:23:46.508: ISAKMP (1049): payload ID

  next payload: 8

  type: 1

  address: 92.67.80.237

  Protocol: 17

  Port: 500

  Length: 12

  28 August 08:23:46.508: ISAKMP: (1049): the total payload length: 12

  28 August 08:23:46.508: ISAKMP: (1049): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) MM_KEY_EXCH

  28 August 08:23:46.508: ISAKMP: (1049): sending a packet IPv4 IKE.

  28 August 08:23:46.508: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

  28 August 08:23:46.508: ISAKMP: (1049): former State = new State IKE_I_MM4 = IKE_I_MM5

  28 August 08:23:46.540: ISAKMP (1049): received 217.150.152.45 packet dport 500 sport Global 500 (I) MM_KEY_EXCH

  28 August 08:23:46.540: ISAKMP: (1049): payload ID for treatment. Message ID = 0

  28 August 08:23:46.540: ISAKMP (1049): payload ID

  next payload: 8

  type: 1

  address: 217.150.152.45

  Protocol: 17

  Port: 500

  Length: 12

  28 August 08:23:46.540: ISAKMP: (0): peer games * no * profiles

  28 August 08:23:46.540: ISAKMP: (1049): HASH payload processing. Message ID = 0

  28 August 08:23:46.540: ISAKMP: (1049): SA authentication status:

  authenticated

  28 August 08:23:46.540: ISAKMP: (1049): SA has been authenticated with 217.150.152.45

  28 August 08:23:46.540: ISAKMP: try inserting a peer /217.150.152.45/500/ and inserted 2A2D7150 successfully.

  28 August 08:23:46.540: ISAKMP: (1049): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

  28 August 08:23:46.540: ISAKMP: (1049): former State = new State IKE_I_MM5 = IKE_I_MM6

  28 August 08:23:46.540: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

  28 August 08:23:46.540: ISAKMP: (1049): former State = new State IKE_I_MM6 = IKE_I_MM6

  28 August 08:23:46.540: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

  28 August 08:23:46.540: ISAKMP: (1049): former State = new State IKE_I_MM6 = IKE_P1_COMPLETE

  28 August 08:23:46.540: ISAKMP: (1049): start Quick Mode Exchange, M - ID of 1582159006

  28 August 08:23:46.552: ISAKMP: (1049): initiator QM gets spi

  28 August 08:23:46.552: ISAKMP: (1049): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) QM_IDLE

  28 August 08:23:46.552: ISAKMP: (1049): sending a packet IPv4 IKE.

  28 August 08:23:46.552: ISAKMP: (1049): entrance, node-1582159006 = IKE_MESG_INTERNAL, IKE_INIT_QM

  28 August 08:23:46.552: ISAKMP: (1049): former State = new State IKE_QM_READY = IKE_QM_I_QM1

  28 August 08:23:46.552: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

  28 August 08:23:46.552: ISAKMP: (1049): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

  28 August 08:23:46.584: ISAKMP (1049): received 217.150.152.45 packet dport 500 sport Global 500 (I) QM_IDLE

  28 August 08:23:46.584: ISAKMP: node set-452721455 to QM_IDLE

  28 August 08:23:46.584: ISAKMP: (1049): HASH payload processing. Message ID =-452721455

  28 August 08:23:46.584: ISAKMP: (1049): treatment protocol NOTIFIER PROPOSAL_NOT_CHOSEN 1

  SPI 0, message ID =-452721455, his 0x31627E04 =

  28 August 08:23:46.584: ISAKMP: (1049): peer does not paranoid KeepAlive.

  28 August 08:23:46.584: ISAKMP: (1049): remove the reason for HIS "fatal Recevied of information' State (I) QM_IDLE (post 217.150.152.45)

  28 August 08:23:46.584: ISAKMP: (1049): node-452721455 error suppression FALSE reason 'informational (en) State 1.

  28 August 08:23:46.584: ISAKMP: (1049): entry = IKE_MESG_FROM_PEER, IKE_INFO_NOTIFY

  28 August 08:23:46.584: ISAKMP: (1049): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

  28 August 08:23:46.584: ISAKMP: node set 494253780 to QM_IDLE

  28 August 08:23:46.584: ISAKMP: (1049): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) QM_IDLE

  28 August 08:23:46.584: ISAKMP: (1049): sending a packet IPv4 IKE.

  28 August 08:23:46.584: ISAKMP: (1049): purge the node 494253780

  28 August 08:23:46.584: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PHASE1_DEL

  28 August 08:23:46.584: ISAKMP: (1049): former State = new State IKE_P1_COMPLETE = IKE_DEST_SA

  28 August 08:23:46.584: ISAKMP: (1049): remove the reason for HIS "fatal Recevied of information' State (I) QM_IDLE (post 217.150.152.45)

  Intertoys_Zentrale_Waddinxveen_01 #.

  28 August 08:23:46.584: ISAKMP: Unlocking counterpart struct 0x2A2D7150 for isadb_mark_sa_deleted(), count 0

  28 August 08:23:46.584: ISAKMP: delete peer node by peer_reap for 217.150.152.45: 2A2D7150

  28 August 08:23:46.584: ISAKMP: (1049): node-1582159006 error suppression FALSE reason 'IKE deleted.

  28 August 08:23:46.584: ISAKMP: (1049): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

  28 August 08:23:46.584: ISAKMP: (1049): former State = new State IKE_DEST_SA = IKE_DEST_SA

  #################################################################################################################

  Is there something special that needs to be addressed when creating a VPN for Juniper devices?

  Greetings

  Thomas

  The peer IPSec a PFS enabled, do the same in your crypto-map:

  card crypto ipsec vpn 2 isakmp

  PFS group2 Set

  --
  Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
  http://www.Kiva.org/invitedBy/karsteni

• Problem with IPSec GRE tunnel

  Hello, I have a radio link with a branch, but the link to the provider is not approved to set up a Tunnel GRE + IPSec, but I get that this log in my router.

  % CRYPTO-4-PKT_REPLAY_ERR: decrypt: re-read the verification failed

  The topology is:

  Router 1 C3825 IOS 12.4 (25f) Fa0/2/2 - link radio - router 2 C3825 IOS 15.1 (4) M4 Gi0/1

  I get the logs into the Router 1 only.

  Configurations are:

  Router 1:

  crypto ISAKMP policy 1

  BA aes

  md5 hash

  preshared authentication

  Group 2

  ISAKMP crypto key Andina12 address 172.20.127.114

  invalid-spi-recovery crypto ISAKMP

  !

  !

  Crypto ipsec transform-set TS aes - esp esp-md5-hmac

  !

  Profile of crypto ipsec protected-gre

  86400 seconds, life of security association set

  game of transformation-TS

  interface Tunnel0

  Description IPSec Tunnel of GRE a Víbora

  bandwidth 2000

  IP 172.20.127.117 255.255.255.252

  IP 1400 MTU

  IP tcp adjust-mss 1360

  tunnel source 172.20.127.113

  tunnel destination 172.20.127.114

  protection ipsec profile protected-gre tunnel

  interface FastEthernet0/2/2

  Description RadioEnlace a Víbora

  switchport access vlan 74

  bandwidth 2000

  No cdp enable

  interface Vlan74

  bandwidth 2000

  IP 172.20.127.113 255.255.255.252

  Router eigrp 1

  network 172.20.127.116 0.0.0.3

  Router 2:

  crypto ISAKMP policy 1

  BA aes

  md5 hash

  preshared authentication

  Group 2

  ISAKMP crypto key Andina12 address 172.20.127.113

  !

  !

  Crypto ipsec transform-set TS aes - esp esp-md5-hmac

  !

  Profile of crypto ipsec protected-gre

  86400 seconds, life of security association set

  game of transformation-TS

  interface Tunnel0

  Description IPSec Tunnel of GRE a CSZ

  bandwidth 2000

  IP 172.20.127.118 255.255.255.252

  IP 1400 MTU

  IP tcp adjust-mss 1360

  tunnel source 172.20.127.114

  tunnel destination 172.20.127.113

  protection ipsec profile protected-gre tunnel

  interface GigabitEthernet0/1

  Description Radio Enlace a CSZ

  bandwidth 2000

  IP 172.20.127.114 255.255.255.252

  automatic duplex

  automatic speed

  media type rj45

  No cdp enable

  Router eigrp 1

  network 172.20.127.116 0.0.0.3

  Thanks for the help.

  Yes, you can have just as configured:

  Crypto ipsec transform-set esp - aes TS

  transport mode

  Be sure to change it on both routers.