Site to site VPN between ios routers spoke with one asa possible hub?

Hi people,

I have a couple of series of routers 1841 ios as the rays and a nodal point using an ASA5520 box. Lan to Lan VPN has no problem of communication with nets of void behind the box of the ASA for A rays & speaks B.

Problem with inter communication of talking, talking cannot ping spoke to B and vice versa. I now use GRE tunnels for inter communication speaks. I know that this is not a good way to do it if the VPN L2L must increase in size. Is it better average as the use of DMPVPN or a way to activate any function in the box of the ASA? (Tried to use the command same-security-traffic permit intra-interface on the ASA but did not work). Can advice you here other experts?

Hello

Talk to talk through the Hub of the SAA is possible. And it looks like you were going in the right direction by setting up "permit same-security-traffic intra-interface". Did you get a chance to look at the URL below and configure the Crypto and ACL SHEEP to include remote subnets. Also, did you do the necessary changes to the side talking to reflect the new set upwards.

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

Kind regards

Arul

* Rate pls if it helps *.

Tags: Cisco Security

Similar Questions

Troubleshooting IPSec Site to Site VPN between ASA and 1841

Hi all

in the past I've implemented several VPN connections between the devices of the SAA. So I thought a site link between an ASA site and 1841 would be easier... But it seems I was mistaken.

I configured a VPN Site to Site, as it has been described in the Document ID: SDM 110198: IPsec Site to Site VPN between ASA/PIX and an example of IOS Router Configuration (I have not used SDM but CCP).

I have run the wizards on the ASA with ASDM and the current IOS version 15.1 1841, with CCP.

It seems to Phase 1 and 2 are coming although my ASA in ADSM reports (monitoring > VPN > VPN statistics > Sessions) a tunnel established with some of the Tx traffic but 0 Rx traffic),

On the ASA:

Output of the command: "sh crypto ipsec its peer 217.xx.yy.zz.

address of the peers: 217.86.154.120
Crypto map tag: VPN-OUTSIDE, seq num: 2, local addr: 62.aa.bb.cc

access extensive list ip 192.168.37.0 outside_2_cryptomap_1 allow 255.255.255.0 172.20.2.0 255.255.255.0
local ident (addr, mask, prot, port): (LAN-A/255.255.255.0/0/0)
Remote ident (addr, mask, prot, port): (LAN-G/255.255.255.0/0/0)
current_peer: 217.xx.yy.zz

#pkts program: 400, #pkts encrypt: 400, #pkts digest: 400
#pkts decaps: 0, #pkts decrypt: 0, #pkts check: 0
compressed #pkts: 0, unzipped #pkts: 0
#pkts uncompressed: 400, comp #pkts failed: 0, #pkts Dang failed: 0
success #frag before: 0, failures before #frag: 0, #fragments created: 0
Sent #PMTUs: 0, #PMTUs rcvd: 0, reassembly: 20th century / of frgs #decapsulated: 0
#send errors: 0, #recv errors: 0

local crypto endpt. : 62.aa.bb.cc, remote Start crypto. : 217.xx.yy.zz

Path mtu 1500, fresh ipsec generals 58, media, mtu 1500
current outbound SPI: 39135054
current inbound SPI: B2E9E500

SAS of the esp on arrival:
SPI: 0xB2E9E500 (3001672960)
transform: esp-3des esp-sha-hmac no compression
running parameters = {L2L, Tunnel, PFS 2 group}
slot: 0, id_conn: 100327424, crypto-map: VPN-OUTSIDE
calendar of his: service life remaining (KB/s) key: (4374000/1598)
Size IV: 8 bytes
support for replay detection: Y
Anti-replay bitmap:
0x00000000 0x00000001
outgoing esp sas:
SPI: 0 x 39135054 (957567060)
transform: esp-3des esp-sha-hmac no compression
running parameters = {L2L, Tunnel, PFS 2 group}
slot: 0, id_conn: 100327424, crypto-map: VPN-OUTSIDE
calendar of his: service life remaining (KB/s) key: (4373976/1598)
Size IV: 8 bytes
support for replay detection: Y
Anti-replay bitmap:
0x00000000 0x00000001

Output of the command: "sh crypto isakmp his."

HIS active: 4
Generate a new key SA: 0 (a tunnel report Active 1 and 1 to generate a new key during the generate a new key)
Total SA IKE: 4

IKE Peer: 217.xx.yy.zz
Type: L2L role: initiator
Generate a new key: no State: MM_ACTIVE

On the 1841

1841 crypto isakmp #sh its
IPv4 Crypto ISAKMP Security Association
DST CBC conn-State id
217.86.154.120 62.153.156.163 QM_IDLE 1002 ACTIVE

1841 crypto ipsec #sh its

Interface: Dialer1
Tag crypto map: SDM_CMAP_1, local addr 217.86.154.120

protégé of the vrf: (none)
local ident (addr, mask, prot, port): (172.20.2.0/255.255.255.0/0/0)
Remote ident (addr, mask, prot, port): (192.168.37.0/255.255.255.0/0/0)
current_peer 62.153.156.163 port 500
LICENCE, flags is {origin_is_acl},
#pkts program: encrypt 0, #pkts: 0, #pkts digest: 0
#pkts decaps: 585, #pkts decrypt: 585, #pkts check: 585
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

local crypto endpt. : 217.86.154.120, remote Start crypto. : 62.153.156.163
Path mtu 1452, ip mtu 1452, ip mtu BID Dialer1
current outbound SPI: 0xB2E9E500 (3001672960)
PFS (Y/N): Y, Diffie-Hellman group: group2

SAS of the esp on arrival:
SPI: 0 x 39135054 (957567060)
transform: esp-3des esp-sha-hmac.
running parameters = {Tunnel}
Conn ID: 2003, flow_id: FPGA:3, sibling_flags 80000046, card crypto: SDM_CMAP_1
calendar of his: service life remaining (k/s) key: (4505068/1306)
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: 0xB2E9E500 (3001672960)
transform: esp-3des esp-sha-hmac.
running parameters = {Tunnel}
Conn ID: 2004, flow_id: FPGA:4, sibling_flags 80000046, card crypto: SDM_CMAP_1
calendar of his: service life remaining (k/s) key: (4505118/1306)
Size IV: 8 bytes
support for replay detection: Y
Status: ACTIVE

outgoing ah sas:

outgoing CFP sas:

Interface: virtual Network1
Tag crypto map: SDM_CMAP_1, local addr 217.86.154.120

protégé of the vrf: (none)
local ident (addr, mask, prot, port): (172.20.2.0/255.255.255.0/0/0)
Remote ident (addr, mask, prot, port): (192.168.37.0/255.255.255.0/0/0)
current_peer 62.153.156.163 port 500
LICENCE, flags is {origin_is_acl},
#pkts program: encrypt 0, #pkts: 0, #pkts digest: 0
#pkts decaps: 585, #pkts decrypt: 585, #pkts check: 585
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

local crypto endpt. : 217.86.154.120, remote Start crypto. : 62.153.156.163
Path mtu 1452, ip mtu 1452, ip mtu BID Dialer1
current outbound SPI: 0xB2E9E500 (3001672960)
PFS (Y/N): Y, Diffie-Hellman group: group2

SAS of the esp on arrival:
SPI: 0 x 39135054 (957567060)
transform: esp-3des esp-sha-hmac.
running parameters = {Tunnel}
Conn ID: 2003, flow_id: FPGA:3, sibling_flags 80000046, card crypto: SDM_CMAP_1
calendar of his: service life remaining (k/s) key: (4505068/1306)
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: 0xB2E9E500 (3001672960)
transform: esp-3des esp-sha-hmac.
running parameters = {Tunnel}
Conn ID: 2004, flow_id: FPGA:4, sibling_flags 80000046, card crypto: SDM_CMAP_1
calendar of his: service life remaining (k/s) key: (4505118/1306)
Size IV: 8 bytes
support for replay detection: Y
Status: ACTIVE

outgoing ah sas:

outgoing CFP sas:

It seems that the routing on the 1841 is working properly as I can tear down the tunnel and relaunch in scathing a host on the network of 1841, but not vice versa.

Trounleshoot VPN of the 1841 report shows a message like "the following sources are forwarded through the interface card crypto. (172.20.2.0 1) go to "Configure-> routing" and correct the routing table.

I have not found an error on the 1841 config so if one of the guys reading this thread has an idea I appreciate highly suspicion!

It's the running of the 1841 configuration

!
version 15.1
horodateurs service debug datetime msec
Log service timestamps datetime msec
encryption password service
!
host name 1841
!
boot-start-marker
start the system flash c1841-adventerprisek9 - mz.151 - 1.T.bin
boot-end-marker
!
logging buffered 51200 notifications
!
AAA new-model
!
!
AAA authentication login default local
!
AAA - the id of the joint session
!
iomem 20 memory size
clock timezone PCTime 1
PCTime of summer time clock day March 30, 2003 02:00 October 26, 2003 03:00
dot11 syslog
IP source-route
!
No dhcp use connected vrf ip
!
IP cef
no ip bootp Server
IP domain name test
name of the IP-server 194.25.2.129
name of the IP-server 194.25.2.130
name of the IP-server 194.25.2.131
name of the IP-server 194.25.2.132
name of the IP-server 194.25.2.133
No ipv6 cef
!
Authenticated MultiLink bundle-name Panel
!
!
object-group network phone
VoIP phone description
Home 172.20.2.50
Home 172.20.2.51
!
redundancy
!
!
controller LAN 0/0/0
atm mode
Annex symmetrical shdsl DSL-mode B
!
!
crypto ISAKMP policy 1
BA 3des
preshared authentication
Group 2
isakmp encryption key * address 62.aa.bb.cc
!
!
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
!
map SDM_CMAP_1 1 ipsec-isakmp crypto
Description Tunnel to62.aa.bb.cc
the value of 62.aa.bb.cc peer
game of transformation-ESP-3DES-SHA
PFS group2 Set
match address 100
!
!
!
interface FastEthernet0/0
DMZ description $ FW_OUTSIDE$
10.10.10.254 IP address 255.255.255.0
IP nat inside
IP virtual-reassembly
automatic duplex
automatic speed
!
interface FastEthernet0/1
Description $ETH - LAN$ $FW_INSIDE$
IP 172.20.2.254 255.255.255.0
IP access-group 100 to
IP nat inside
IP virtual-reassembly
IP tcp adjust-mss 1412
automatic duplex
automatic speed
!
ATM0/0/0 interface
no ip address
No atm ilmi-keepalive
!
point-to-point interface ATM0/0/0.1
PVC 1/32
PPPoE-client dial-pool-number 1
!
!
interface Dialer1
Description $FW_OUTSIDE$
the negotiated IP address
IP mtu 1452
NAT outside IP
IP virtual-reassembly
encapsulation ppp
Dialer pool 1
Dialer-Group 2
PPP authentication chap callin pap
PPP chap hostname xxxxxxx
PPP chap password 7 xxxxxxx8
PPP pap sent-name of user password xxxxxxx xxxxxxx 7
map SDM_CMAP_1 crypto
!
IP forward-Protocol ND
IP http server
local IP http authentication
IP http secure server
!
!
The dns server IP
IP nat inside source static tcp 10.10.10.1 808 interface Dialer1 80
IP nat inside source static tcp 10.10.10.1 25 25 Dialer1 interface
IP nat inside source overload map route SDM_RMAP_1 interface Dialer1
IP nat inside source overload map route SDM_RMAP_2 interface Dialer1
IP route 0.0.0.0 0.0.0.0 Dialer1 permanent
!
logging trap notifications
Note category of access list 1 = 2 CCP_ACL
access-list 1 permit 172.20.2.0 0.0.0.255
Note access-list category 2 CCP_ACL = 2
access-list 2 allow 10.10.10.0 0.0.0.255
Note access-list 100 category CCP_ACL = 4
Note access-list 100 IPSec rule
access-list 100 permit ip 172.20.2.0 0.0.0.255 192.168.37.0 0.0.0.255
Note CCP_ACL the access list 101 = 2 category
Note access-list 101 IPSec rule
access-list 101 deny ip 172.20.2.0 0.0.0.255 192.168.37.0 0.0.0.255
access-list 101 permit ip 172.20.2.0 0.0.0.255 any
Note access-list 102 CCP_ACL category = 2
Note access-list 102 IPSec rule
access-list 102 deny ip 172.20.2.0 0.0.0.255 192.168.37.0 0.0.0.255
access-list 102 permit ip 10.10.10.0 0.0.0.255 any
!

!
allowed SDM_RMAP_1 1 route map
corresponds to the IP 101
!
allowed SDM_RMAP_2 1 route map
corresponds to the IP 102
!
!
control plan
!
!
Line con 0
line to 0
line vty 0 4
length 0
transport input telnet ssh
!
Scheduler allocate 20000 1000
NTP-Calendar Update
NTP 172.20.2.250 Server prefer
end

As I mentioned previously: suspicion is much appreciated!

Best regards

Joerg

Joerg,

ASA receives not all VPN packages because IOS does not send anything.

Try to send packets to the 1841 LAN to LAN of the ASA and see is the "sh cry ips its" on the 1841 increments the encrypted packets (there not)

The problem seems so on the side of the router.

I think that is a routing problem, but you only have one default gateway (no other channels on the router).

The ACL 100 is set to encrypt the traffic between the two subnets.

It seems that the ACL 101 is also bypassing NAT for VPN traffic.

Follow these steps:

Try running traffic of LAN router inside IP (source of ping 192.168.37.x 172.20.2.254) and see if the packages are not through the translation and obtaining encrypted.

I would also like to delete 100 ACL from the inside interface on the router because it is used for the VPN. You can create an another ACL to apply to the interface.

Federico.

Configure several IPSec VPN between Cisco routers

I would like to create multiple ipsec VPN between 3 routers. Before applying it, I would like to check on the config I wrote to see if it works. It's just on RouterA configuration for virtual private networks to RouterB, and RouterC.

As you can apply in a cyptomap by interface, I say with the roadmap, that it should be able to manage traffic for both routers. Or is there a better way to do it?

RouterA - 1.1.1.1

RouterB - 2.2.2.2

RouterC - 3.3.3.3

RouterA

crypto ISAKMP policy 10

BA 3des

preshared authentication

Group 2

ISAKMP crypto key RouterB address 2.2.2.2

ISAKMP crypto keys RouterC address 3.3.3.3

invalid-spi-recovery crypto ISAKMP

ISAKMP crypto keepalive 5 10 periodicals

ISAKMP crypto nat keepalive 30

!

life crypto ipsec security association seconds 28800

!

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

!

outsidemap 20 ipsec-isakmp crypto map

defined peer 2.2.2.2

game of transformation-AES-SHA

match address 222

outsidemap 30 ipsec-isakmp crypto map

defined peer 3.3.3.3

game of transformation-AES-SHA

match address 333

!

interface GigabitEthernet0/0

Description * Internet *.

NAT outside IP

outsidemap card crypto

!

interface GigabitEthernet0/1

Description * LAN *.

IP 1.1.1.1 255.255.255.0

IP nat inside

!

IP nat inside source map route RouterA interface GigabitEthernet0/0 overload

!

access-list 222 allow ip 1.1.1.0 0.0.0.255 2.2.2.0 0.0.0.255

access-list 223 deny ip 1.1.1.0 0.0.0.255 2.2.2.0 0.0.0.255

access-list 223 allow ip 1.1.1.0 0.0.0.255 any

access-list 333 allow ip 1.1.1.0 0.0.0.255 3.3.3.0 0.0.0.255

access-list 334 deny ip 1.1.1.0 0.0.0.255 3.3.3.0 0.0.0.255

access-list 334 allow ip 1.1.1.0 0.0.0.255 any

!

!

RouterA route map permit 10

corresponds to the IP 223 334

Hi Chris,

The two will remain active.

The configuration you have is for several ste VPN site is not for the redundant VPN.

The config for the redundant VPN is completely different allows so don't confuse is not with it.

In the redundant VPN configuration both peers are defined in the same card encryption.

Traffic that should be passed through the tunnel still depend on the access list, we call in the card encryption.

This access-lsist is firstly cheked and as a result, the traffic is passed through the correct tunnel

HTH!

Concerning

Regnier

Please note all useful posts

Site to Site VPN Cisco IOS 1941 15.0 (1) M1

Hello

I am currently developing a Site VPN site between an ASA and a router in 1941. Configuring VPN on the SAA seems to be ok, because it works without problem with router 1841 with IOS 12.4 to the other site. The same VPN configuration on the new router in 1941 with M1 IOS 15.0 (1) does not work. It seems that the access to the crypto map list is the problem. The router never start the VPN connection. When the ASA attempts to establish the VPN, the debugging of the router log shows:

...

* 14:37:52.263 may 5: ISAKMP: (1007): proposal of IPSec checking 1
* 14:37:52.263 may 5: ISAKMP: turn 1, ESP_3DES
* 14:37:52.263 may 5: ISAKMP: attributes of transformation:
* 14:37:52.263 may 5: ISAKMP: type of life in seconds
* 14:37:52.263 may 5: ISAKMP: life of HIS (basic) of 28800
* 14:37:52.263 may 5: ISAKMP: type of life in kilobytes
* 14:37:52.263 may 5: ISAKMP: service life of SA (IPV) 0x0 0 x 46 0 50 x 0 x 0
* 14:37:52.263 may 5: ISAKMP: program is 1 (Tunnel)
* 14:37:52.263 may 5: ISAKMP: authenticator is HMAC-SHA
* 14:37:52.263 may 5: ISAKMP: group is 2
* 14:37:52.263 may 5: ISAKMP: (1007): atts are acceptable.
* 5 May 14:37:52.263: ISAKMP: (1007): IPSec policy invalidated proposal with error 32
* 5 May 14:37:52.263: ISAKMP: (1007): politics of ITS phase 2 is not acceptable! (local... remote control...)

...

Any clue?

Concerning

Claudia

The configuration of the router:

version 15.0
horodateurs service debug datetime msec
Log service timestamps datetime msec
no password encryption service
!
hostname Cisco1941
!
No aaa new-model
!
No ipv6 cef
no ip source route
IP cef
!
IP domain name xyz.de
!
Authenticated MultiLink bundle-name Panel
!
Crypto pki trustpoint TP-self-signature-...
!
TP-self-signature-... crypto pki certificate chain
quit smoking
license udi pid CISCO1941/K9 sn...
!
username privilege 15 secret 5 xyz $1$...
!
redundancy
!
session of crypto consignment
!
crypto ISAKMP policy 10
BA 3des
preshared authentication
Group 2
ISAKMP crypto key... address 1.2.3.4
invalid-spi-recovery crypto ISAKMP
!
Crypto ipsec transform-set esp-3des esp-sha-hmac tsAsa
!
ASA 10 ipsec-isakmp crypto map
defined peer 1.2.3.4
Set transform-set tsAsa
PFS group2 Set
match address 100
!
interface GigabitEthernet0/0
Description * inside *.
IP 10.100.100.1 255.255.255.0
automatic duplex
automatic speed
!
!
interface GigabitEthernet0/1
IP 5.6.7.8 255.255.255.240
IP access-group 111 to
no ip-cache cef route
no ip route cache
automatic duplex
automatic speed
card crypto asa
!
!
ATM0/0/0 interface
no ip address
Shutdown
No atm ilmi-keepalive
!
!
IP forward-Protocol ND
!
IP route 0.0.0.0 0.0.0.0 1.2.3.5
!
access-list 100 permit ip 10.100.100.0 0.0.0.255 10.10.10.0 0.0.0.255
access-list 111 allow esp 1.2.3.4 host 5.6.7.8
access-list 111 permit udp host 1.2.3.4 host 5.6.7.8 eq isakmp
access-list 111 allow ahp host 1.2.3.4 5.6.7.8
access-list 111 deny ip any any newspaper

....

end

Try to do this:

IP route 10.10.10.0 255.255.255.0 interface Ge0/1

Route IP 1.2.3.4 255.255.255.255 by default-gateway-to-Ge0/1

The rest of your config looks very good.

Site to Site VPN of IOS - impossible route after VPN + NAT

Hello

I have problems with a VPN on 2 routers access 8xx: I am trying to set up a quick and dirty VPN Site to Site with a source NAT VPN tunnel endpoint. This configuration is only intended to run from one day only inter. I managed to do the work of VPN and I traced the translations of NAT VPN tunnel endpoint, but I couldn't make these translated packages which must move outside the access router, because intended to be VPN traffic network is not directly connected to leave the router. However, I can ping the hosts directly connected to the router for access through the VPN.

Something done routing not to work, I don't think the NATing, because I tried to remove the NAT and I couldn't follow all outgoing packets that must be sent, so I suspect this feature is not included in the IOS of the range of routers Cisco 8xx.

I'm that extends the features VPN + NAT + routing too, or is there a configuration error in my setup?

This is the configuration on the router from Cisco 8xx (I provided only the VPN endpoint, as the works of VPN endpoint)

VPN endpoints: 10.20.1.2 and 10.10.1.2

routing to 192.168.2.0 is necessary to 192.168.1.2 to 192.168.1.254

From 172.31.0.x to 192.168.1.x

!

version 12.4

no service button

horodateurs service debug datetime msec

Log service timestamps datetime msec

encryption password service

!

hostname INSIDEVPN

!

boot-start-marker

boot-end-marker

!

enable secret 5 xxxxxxxxxxxxxxx

!

No aaa new-model

!

!

dot11 syslog

no ip cef

!

!

!

!

IP domain name xxxx.xxxx

!

Authenticated MultiLink bundle-name Panel

!

!

username root password 7 xxxxxxxxxxxxxx

!

!

crypto ISAKMP policy 10

BA 3des

preshared authentication

ISAKMP crypto key address 10.20.1.2 xxxxxxxxxxxxx

!

!

Crypto ipsec transform-set esp-3des esp-sha-hmac VPN-TRANSFORMATIONS

!

CRYPTOMAP 10 ipsec-isakmp crypto map

defined by peer 10.20.1.2

game of transformation-VPN-TRANSFORMATIONS

match address 100

!

Archives

The config log

hidekeys

!

!

LAN controller 0

line-run cpe

!

!

!

!

interface BRI0

no ip address

encapsulation hdlc

Shutdown

!

interface FastEthernet0

switchport access vlan 12

No cdp enable

card crypto CRYPTOMAP

!

interface FastEthernet1

switchport access vlan 2

No cdp enable

!

interface FastEthernet2

switchport access vlan 2

No cdp enable

!

interface FastEthernet3

switchport access vlan 2

No cdp enable

!

interface Vlan1

no ip address

!

interface Vlan2

IP 192.168.1.1 255.255.255.248

NAT outside IP

IP virtual-reassembly

!

interface Vlan12

10.10.1.2 IP address 255.255.255.0

IP nat inside

IP virtual-reassembly

card crypto CRYPTOMAP

!

IP forward-Protocol ND

IP route 192.168.2.0 255.255.255.0 192.168.1.254

IP route 10.20.0.0 255.255.0.0 10.10.1.254

Route IP 172.31.0.0 255.255.0.0 Vlan12

!

!

no ip address of the http server

no ip http secure server

IP nat inside source static 172.31.0.2 192.168.1.11

IP nat inside source 172.31.0.3 static 192.168.1.12

!

access-list 100 permit ip 192.168.1.0 0.0.0.255 172.31.0.0 0.0.255.255

access-list 100 permit ip 192.168.2.0 0.0.0.255 172.31.0.0 0.0.255.255

!

!

control plan

!

!

Line con 0

no activation of the modem

line to 0

line vty 0 4

password 7 xxxxxxxxx

opening of session

!

max-task-time 5000 Planner

end

Hi Jürgen,

First of all, when I went through your config, I saw these lines,

!

interface Vlan2

IP 192.168.1.1 255.255.255.248

!

!

IP route 192.168.2.0 255.255.255.0 192.168.1.254

!

With 255.255.255.248 192.168.1.1 and 192.168.1.254 subnet will fall to different subnets. So I don't think you can join 192.168.2.0/24 subnet to the local router at this point. I think you should fix that first.

Maybe have 192.168.1.2 255.255.255. 248 on the router connected (instead of 192.168.1.254)

Once this has been done. We will have to look at routing.

You are 172.31.0.2-> 192.168.1.11 natting

Now, in order for that to work, make sure that a source addresses (192.168.1.11) NAT is outside the subnet router to router connected (if you go with 192.168.1.0/29 subnet router to router, with 192.168.1.1/29 on the local router and 192.168.1.2/29 on the connected router as suggested, it will be fine). So in this case 192.168.1.8/29 to the subnet that your NAT would be sources fall.

Have a static route on the router connected (192.168.1.2) for the network 192.168.1.8/29 pointing 192.168.1.1,

!

IP route 192.168.1.8 255.255.255.248 192.168.1.1

!

If return packets will be correctly routed toward our local router.

If you have an interface on the connected rotuer which includes the NAT would be source address range, let's say 192.168.1.254/24, even if you do your packages reach somehow 192.168.2.0/24, the package return never goes to the local router (192.168.1.1) because the connected router sees it as a connected subnet, so it will only expire

I hope I understood your scenario. Pleae make changes and let me know how you went with it.

Also, please don't forget to rate this post so useful.

Shamal

2 one-Site VPN between HQ, Site A and Site B

Dear brothers,

Really I need your kindly help on Site 2 Site VPN.

We have a HQ and 2 Sites (Site A Site & B), and we think to set up VPN Site-2-Site between them now.

HQ--> 3845 router (will be the hub)--> a given vlan 11 & vlan voice 21

Site A--> router 2901 (will be the Spoke1)--> a given vlan 12 & vlan voice 22

Site B--> router 1941 (will be the Spoke2)--> a given vlan 13 & vlan voice 23

So my questions are:

1 - when the VPN going up, are only the HQ VLAN data & voice will be able to reach the Site & A B data & Voice VLAN and Vice versa?

2 - when the VPN is going up, are that the Site has data & Voice VLAN will be able to reach the Site B Data & Voice VLAN and Vice versa?

Thank you

Hello

I think this example explains what you need:http://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation...

Kind regards

Averroès.

VPN between 2 routers Cisco 1841 (LAN to LAN)

Hello

I need to connect two offices (two different LAN) using routers cisco 1841 at both ends.

Currently the two cisco router are in working condition and refer the internet LAN clients. (making the NAT).

Can someone please tell us what is the easiest way to set up a VPN between two sites, so that LAN users to an office to access mail servers electronic/request to the office LAN.

I understand that I need IPSec Site to Site VPN (I think).

Anyonce can you please advise.

Kind regards.
```
s.nasheet wrote:
Hi ,
I need to connect two offices ( two different LAN's) together using cisco 1841 routers at both end.
Currently both cisco router are in working order and  acting as a internet gateway to the LAN clients. ( doing NAT).
Can anybody please advise what is the easiest method to configure VPN between two sites so that  LAN users at one office be able to access  the  email/application servers at the other LAN office.
I understand I need IPSec Site to Site VPN  ( i think).
Can anyonce please advise.
Regards.
```
Yes, you need a VPN site-to site. Start with this link which gives a number of examples to set up a VPN S2S between 2 routers Cisco.

http://www.Cisco.com/en/us/Tech/tk583/TK372/tech_configuration_examples_list.html#anchor16

Jon

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

Hi experts,

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

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

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

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

R1:

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

!

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

R3:

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

!

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

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

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

Packets encapsulated in exactly the same way!

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

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

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

Thank you

Difan

Hi Difan,

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

A typical scenario in this mode of transport is used:

-Encryption between two hosts

-GRE tunnels

-L2TP over IPsec

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

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

HTH,

Marcin

Site to Site VPN between ISR4331(Data Center) and 25 branches with RV042 and dynamic public IP address

Hi, we just got router ISR4331. We will use this router to our datacenter as pummel hub. Not to mention that it will be the static IP address. Our goal is to connect 30 small offices to the Datacenter by VPN site-to-site. All of our offices a RV042 router and DSL connection, so dynamic public IP. How to accomplish this task. Before the VPN connection is stable and the need not to configure tunnels frequently.

Thank you

GM

Hello

Please check the config below:

HUBS:

crypto ISAKMP policy 1

BA 3des

md5 hash

preshared authentication

Group 2

life 86400

crypto isakmp secretkey key address 0.0.0.0 0.0.0.0 (Having said that the dynamic router HUB remote routers have public ip address)

Describe your valuable traffic. Note that I have sepcified for both tunnels, but basically, it will be the same for the rest out for the destination. For example, I used 192.168.1.0/24 and 192.168.2.0/24. You will need to replace it with your existing installation.

TUN1 extended IP access list

ip permit 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255

TUN2 extended IP access list

ip permit 192.168.1.0 0.0.0.255 192.168.3.0 0.0.0.255

Create your strategy to Phase 2

Crypto ipsec transform-set esp-3des esp-md5-hmac TS

card crypto S2STUN 1-isakmp dynamic ipsec HUB_TUN

crypto dynamic-map HUB_TUN 10

86400 seconds, life of security association set

game of transformation-TS

match address TUN1

!

crypto dynamic-map HUB_TUN 11

86400 seconds, life of security association set

game of transformation-TS

match address TUN2

Now apply the card encryption to your WAN interface

gi0/1 interface

card crypto S2STUN

Now configure on your remote routers

Remote router 1

crypto ISAKMP policy 1
BA 3des

md5 hash

preshared authentication

Group 2

life 86400

!

ISAKMP crypto secretkey key address x.x.x.x (replace with your public ip address of the HUB)

!

TUNNEL TRAFFIC extended IP access list

permit ip 192.168.2.0 0.0.0.255 192.168.1.0 0.0.0.255

!

Crypto ipsec transform-set esp-3des esp-md5-hmac TS

!

crypto card TUN_TO_HUB 10 ipsec-isakmp

defined peer x.x.x.x (replace with your public ip address of the hub)

game of transformation-TS

match address TRAFFIC TUNNEL
!

gi0/1 interface

card crypto TUN_TO_HUB

Remote router 2

crypto ISAKMP policy 1

BA 3des

md5 hash

preshared authentication

Group 2

life 86400

!

ISAKMP crypto secretkey key address x.x.x.x (replace with your public ip address of the HUB)

!

TUNNEL TRAFFIC extended IP access list

ip licensing 192.168.3.0 0.0.0.255 192.168.1.0 0.0.0.255

!

Crypto ipsec transform-set esp-3des esp-md5-hmac TS

!

crypto card TUN_TO_HUB 10 ipsec-isakmp

defined peer x.x.x.x (replace with your public ip address of the hub)

game of transformation-TS

match address TRAFFIC TUNNEL
!

gi0/1 interface

card crypto TUN_TO_HUB

HTH.

Evaluate the useful ticket.

Kind regards

Terence

Site to Site VPN between 5510 and 5505

Am trying to get a VPN site-to site and the race between a branch office and our main office. I have the settings in place, but I'm trying to determine if it's my settings or the provider DSL, Verizon.

They have a 5505 with a static IP is connected by cable modem. Their 5505 I can ping external IP of my 5510 without problem. All the settings are correct on both sides; they reflect the same settings and yet static VPN is not launched.

Is there some sort of CLI command I must issue to bring it?

Also, I was wondering if maybe my 2821 prevents all VPN traffic because it doesn't have to be re - NAT'ed to the 192.168.250.0/23 and 192.168.252.0/24 subnets.

Simply to traffic of their 192.168.40.0 in our 192.168.250.0/23 VOIP subnet subnet.

Join a basic outline. I can provide the configs for almost everything

Hello

you have two instances of sequence card crypto with parameters similar (except transform set). Get rid of the rest of sequences card crypto:

On the ASA Satellite:

no card crypto outside_map 2 match address outside_cryptomap

no card crypto outside_map 2 set pfs

no card crypto outside_map 2 peers set smivpn.sorensonmedia.com

no card crypto outside_map 2 the transform-set ESP-3DES-MD5 value

No crypto outside_map 2 set security-association life card seconds 28800

No kilobytes of life card crypto outside_map 2 set security-association 4608000

no card crypto outside_map 2 the value reverse-road

About the ASA company:

No crypto outside_map 1 game card address outside_1_cryptomap_1

no card crypto outside_map 1 set pfs

no card crypto outside_map 1 set cda.asa5505 counterpart

no card crypto outside_map 1 the value transform-set ESP-3DES-SHA

no card crypto outside_map 1 lifetime of security association set seconds 28800

No kilobytes of life card crypto outside_map 1 set security-association 4608000

no card crypto outside_map 1 the value reverse-road

Then check and capture debugs.

HTH

Sangaré

Site to Site VPN between Cisco ASA 5505 and Sonicwall TZ170

I'm trying to implement a VPN site-to site between our data center and office. The data center has a Cisco ASA 5505 and the Office has a Sonicwall TZ170. I managed to configure the two so that the vpn connects. Each of the firewall I ping the IP Address of the internet firewall on the other side and a desktop computer I can ping the IP Address of the firewall internal datacenter but I can't carry traffic between private subnets datacenter and desktop. Can anyone help?

The config below has had IPs/passwords has changed.

External Datacenter: 1.1.1.4

External office: 1.1.1.1

Internal data center: 10.5.0.1/24

Internal office: 10.10.0.1/24

: Saved
:
ASA Version 8.2 (1)
!
hostname datacenterfirewall
mydomain.tld domain name
activate the password encrypted
passwd encrypted
names of
name 10.10.0.0 OfficeNetwork
10.5.0.0 DatacenterNetwork name
!
interface Vlan1
nameif inside
security-level 100
10.5.0.1 IP address 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
1.1.1.4 IP address 255.255.255.0
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passive FTP mode
clock timezone IS - 5
clock to summer time EDT recurring
DNS server-group DefaultDNS
buydomains.com domain name
permit same-security-traffic inter-interface
permit same-security-traffic intra-interface
inside_access_in list extended access permit icmp any one
inside_access_in list extended access permitted tcp a whole
inside_access_in list extended access udp allowed a whole
inside_access_in of access allowed any ip an extended list
outside_access_in list extended access permit icmp any one
outside_access_in list extended access udp allowed any any eq isakmp
IP DatacenterNetwork 255.255.255.0 OfficeNetwork 255.255.255.0 allow Access-list extended pixtosw
pixtosw list extended access allow icmp DatacenterNetwork 255.255.255.0 OfficeNetwork 255.255.255.0
IP OfficeNetwork 255.255.255.0 DatacenterNetwork 255.255.255.0 allow Access-list extended pixtosw
pixtosw list extended access allow icmp OfficeNetwork 255.255.255.0 DatacenterNetwork 255.255.255.0
outside_cryptomap_66.1 list of allowed ip extended access all OfficeNetwork 255.255.255.0
outside_cryptomap_66.1 ip OfficeNetwork 255.255.255.0 allowed extended access list all
outside_cryptomap_66.1 list extended access permit icmp any OfficeNetwork 255.255.255.0
outside_cryptomap_66.1 list extended access allowed icmp OfficeNetwork 255.255.255.0 everything
pager lines 24
Enable logging
asdm of logging of information
Within 1500 MTU
Outside 1500 MTU
IP verify reverse path to the outside interface
ICMP unreachable rate-limit 1 burst-size 1
ASDM image disk0: / asdm - 623.bin
don't allow no asdm history
ARP timeout 14400
NAT-control
Global 1 interface (outside)
NAT (inside) 1 0.0.0.0 0.0.0.0
inside_access_in access to the interface inside group
Access-group outside_access_in in interface outside
Route inside 0.0.0.0 0.0.0.0 1.1.1.1 1
Route OfficeNetwork 255.255.255.0 outside 1.1.1.1 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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-registration DfltAccessPolicy
Enable http server
http 10.5.0.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown cold start
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ESP-DES-MD5 esp - esp-md5-hmac
Crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
Crypto ipsec transform-set ESP-3DES-MD5-esp-3des esp-md5-hmac
Crypto ipsec transform-set ESP-AES-128-SHA aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-MD5-esp - aes esp-md5-hmac
Crypto ipsec transform-set esp-aes-256 walthamoffice, esp-sha-hmac
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
Crypto dynamic-map ciscopix 1 corresponds to the address outside_cryptomap_66.1
Crypto dynamic-map ciscopix 1 transform-set walthamoffice
Crypto dynamic-map ciscopix 1 the value reverse-road
map dynmaptosw 66-isakmp ipsec crypto dynamic ciscopix
dynmaptosw interface card crypto outside
crypto isakmp identity address
crypto ISAKMP allow outside
crypto ISAKMP policy 10
preshared authentication
3des encryption
sha hash
Group 2
life 86400
crypto ISAKMP policy 13
preshared authentication
aes-256 encryption
sha hash
Group 2
lifetime 28800
crypto ISAKMP policy 30
preshared authentication
aes-256 encryption
sha hash
Group 2
life 86400
No encryption isakmp nat-traversal
Telnet 10.5.0.0 255.255.255.0 inside
Telnet timeout 5
SSH 10.5.0.0 255.255.255.0 inside
SSH timeout 5
Console timeout 0
management-access inside
dhcpd address 10.5.0.2 - 10.5.0.254 inside
dhcpd allow inside
!

a basic threat threat detection
Statistics-list of access threat detection
no statistical threat detection tcp-interception
NTP server 66.250.45.2 source outdoors
NTP server 72.18.205.157 source outdoors
NTP server 208.53.158.34 source outdoors
WebVPN
attributes of Group Policy DfltGrpPolicy
VPN-idle-timeout no
username admin password encrypted
tunnel-group 1.1.1.1 type ipsec-l2l
tunnel-group 1.1.1.1 ipsec-attributes
pre-shared-key *.
!
!
!
type of policy-card inspect dns preset_dns_map
parameters
message-length maximum 512
!
context of prompt hostname
Cryptochecksum:7f319172e5de9c0e550804a263f8e49e
: end

Mattew, obvious lack of education is the rule exempt from nat for your tunnel, your access list pixtosw is similar on this example, I assume that you have gone through this link, if it does not see the configs on both sides.

Add the statement of rule sheep in asa and try again.

NAT (inside) 0-list of access pixtosw

http://www.Cisco.com/en/us/products/HW/vpndevc/ps2030/products_configuration_example09186a008052c9d4.shtml

Concerning

ASA 5505 site to site VPN between A to site B, then B site MPLS network internal

Hi all

I'll put up the VPN site to site between two site A to site B. Two local site of A and B are connected correctly. However for my site B have an other intern MPLS to another site. The thin connection of LAN has completely to the LAN B MPLS router, but cannot connect to other site MPLS. If I did the SPLM traceroute on another site. Access internal router LAN B. Therefore, I'm confused what part of my setup to trick you and any document for my reference. Thank you very much.

Local area NETWORK a (ASA 5505)---(ASA 5505) Local LAN B - router internal B - B router MPLS - another site.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>xxxxxxxxxxxxxxx

Hello, Alan

After having crossed the configuration that I realized that the problem was with the main campus network was not in the list of nat step in the direction of the ASA. After you have added that, everthing works

Thank you

Please note the useful messages!

Harish

Site to Site VPN between PIX and Linksys RV042

I am trying to create a tunnel between a 506th PIX and a Linksys RV042 vpn . I configured the Phase 1 and Phase 2 as well as the transformation defined and interested traffic and connected to the external interface, but it will not create the tunnel. Configurations are as follows:

506th PIX running IOS 6.3

part of pre authentication ISAKMP policy 40
ISAKMP policy 40 cryptographic 3des
ISAKMP policy 40 sha hash
40 2 ISAKMP policy group
ISAKMP duration strategy of life 40 86400
ISAKMP key * address 96.10.xxx.xxx netmask 255.255.255.255
access-list 101 permit ip 192.168.21.0 255.255.255.0 192.168.1.0 255.255.255.0crypto map Columbia_to_Office 10 ipsec-isakmp
crypto Columbia_to_Office 10 card matches the address 101
card crypto Columbia_to_Office 10 set peer 96.10.xxx.xxx
10 Columbia_to_Office transform-set ESP-3DES-SHA crypto card game
Columbia_to_Office interface card crypto outside

Linksys RV042

Configuration of local groups
IP only
IP address: 96.10.xxx.xxx
Type of local Security group: subnet
IP address: 192.168.1.0
Subnet mask: 255.255.255.0

Configuration of the remote control groups
IP only
IP address: 66.192.xxx.xxx
Security remote control unit Type: subnet
IP address: 192.168.21.0
Subnet mask: 255.255.255.0

IPSec configuration
Input mode: IKE with preshared key
Group Diffie-Hellman phase 1: group2
Phase 1 encryption: 3DES
Authentication of the phase 1: SHA1
Life of ITS phase 1: 86400

Phase2 encryption: 3DES
Phase2 authentication: SHA1
Phase2 life expectancy: 3600 seconds
Pre-shared key *.

I'm a novice on the VPN. Thanks in advance for your expertise.

Yes, version PIX 6.3 does not support HS running nat or sh run crypto.

Please please post the complete config if you don't mind.

Please also try to send traffic between subnets 2 and get the output of:

See the isa scream his

See the ipsec scream his

Site to site VPN - impossible to reach the other side ASA

Hello

Recently, I replaced a Juniper with a Cisco ASA 5505 firewall in a branch. This branch has a VPN site to another seat. Firewall at Headquarters is a Juniper and managed by third parties. I have configured the ASA and replaced Juniper. Everything at the Branch works, and can reach all subnets and servers. As the user is concerned, there is no problem.

But corporate headquarters, I am unable to reach this ASA on the interface of data or management. See the image, I am unable to ping or join a network 192.168.10.0 and 192.168.200.0 or any other subnet 10.15.8.0 to Headquarters. However, I can ping computers from branch office which is in the same subnet as the data interface.

You guys could help me as I need to reach the ASA headquarters branch. I welcome all networks on both sides inside and the external interface. I also created a NAT as below. Am I wrong configured NAT

NAT (inside, outside) static source DM_INLINE_NETWORK_4 DM_INLINE_NETWORK_4 HO_Subnets HO_Subnets non-proxy-arp-search of route static destination
!
NAT Dynamics obj_any interface of source to auto after (indoor, outdoor)

DIWA

This information is useful. You try to SSH to the address inside or management? May I suggest that we focus for now on access to inside? After we get this working, we can watch access via the management.

It does not appear in what you posted, but I'm not sure if it might be something that you have removed before posting. Do you have configured access to the administration? If this is not the case, may I suggest that you add access management inside the config.

HTH

Rick

Why some sites the police change a diamond with one? inside

Only some website and does not occur in Internet Explorer.
only for firefox

Check the coding and make sure that you have not selected Unicode (UTF-8), but this Western (ISO-8859-1) is selected.
```
Firefox > Web Developer > Character Encoding
View > Character Encoding
```

Site to site VPN between ios routers spoke with one asa possible hub?

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