Cisco VPN :: ASA5520 - Site-to-site VPN With ISP Failover
Apr 15, 2013
I am using the Cisco ASA 5520 with Software Version 8.2(3). I have several site-to-site VPN connections and two separate ISP connections. I have set up the SLA tracker for the dual ISP so that if one fails the other one takes over. But I don't know how to do the same for the site-to-site IPSec VPN tunnels. I have read a few discussions on the Cisco Support Community but I am really confused about what to do. I have two outside interfaces: outside and WAN2. I understand you can only apply the crypto to one interface so how would I make the change to allow the VPN to failover when the primary ISP were to fail?
Here is my configuration for the cryptos and SLA tracker:
crypto map outside_map 10 match address ACL_VPN_1
crypto map outside_map 10 set pfs
crypto map outside_map 10 set peer x.x.x.x x x.x.x.x
crypto map outside_map 10 set transform-set NAME_SET
crypto map outside_map 10 set security-association lifetime seconds 28800
crypto map outside_map 10 set security-association lifetime kilobytes 4608000(code)
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Sep 25, 2011
One local site where i have one ASA5520 . I have to create a site to site vpn with the remote site1 and site 2.vpn with site1 is primary and other is backup. local address on ASA is 192.168.10.10 and on the remote site1 and site2 is 10.10.10.1.I have to make sure that if vpn with the site1 is active then the routing for 10.10.10.1 should be towards vpn to site1. and if it goes down then failover to vpn2 to site 2.In case if the vpn1 to site1 comes up, the traffic should shift to VPN1 to site1.Access is from ASA5520 end client to the remote server.
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Dec 1, 2011
How can I NAT the same set of four hosts and give them access to two different networks across an IPSEC site-to-site VPN tunnel? I'm using an ASA5520 running 8.04.
I have four hosts say: 10.240.1.1-10.240.1.4
They need access to two different networks:
205.100.150.0
140.175.200.0
I woud like to NAT them as something like:
7.5.210.1
7.5.210.2
7.5.210.3
7.5.210.4
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Aug 10, 2011
I cannot get it to work : if interesting traffic comes ffrom the IPSO side, the box would not even try to set up the tunnel. and If it comes fomr the ASA side, the box attempts to do so but it with this strange message : AM_WAIT_MSG2
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Jan 14, 2012
I have some VPN site to site ( site B and site C connect to site A ). This subnet 10.0.56.0/28 is behind site B. Another subnet 10.0.56.16/28 is behind site C. I would like to route this 10.0.56.0/28 to reach the subnet 10.0.56.16/28. Is there any possibility to do this on ASA5520 (site A)?
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Jun 14, 2012
I have a site-site VPN tunnel between my location and my remote office. My remote office is changing their ISP, so the VPN GW is getting changed. do i need to create new site-site tunnel again or changing the remote peer VPN GW in my FW is enough? FYI, i have cisco ASA5520 and my remote office has check point UTM-1 edge box.
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Mar 6, 2013
I done some searching and can't come up with a definative answer any where so I'm going to ask the experts.
We have an ASA 5520 in our home office, connected to the Internet via IPV4 and IPV6 and it's all working great, we fully support IPV4 and IPV6 to all home office workstations and servers. We have a branch office connected back to our home office via a IPV4 site to site VPN with IPV4 connectivity thru the Internet. The branch office is using an ASA5505 and only has IPv4 connectivity to the Internet.
We would like to setup the site to site VPN so that it supports both IPV4 and IPV6 traffic, essentially giving our branch office IPV6 connectivity to the Internet (though us) and to our IPV6 services. Most of our home office network is fully IPV6 but some older services remain IPV4 only. I know that the ASA5505 will give us either a IPV4 to IPV4 over IPv4 connection, we are currently using that, and it will give IPV6 to IPV6 over IPV4. But can it be configured to give both IPV4 and IPV6 to IPV4 and IPV6 over IPV4 connectivity?
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Oct 31, 2011
I have an ASA5520 and need to set up multiple VPN's to some vendor sites. All these vendors are using 192.168.1.0 networks. All have public IP's and very little knowledge so are unable to NAT from their end.The idea is to create some /28 blocks of IP's (172.29.0.0/28) and manage this on our end.
How do I get this to work?
example: (all IP's are fictional)
tunnel1
VPN
My side "outside" 10.10.10.10
Their side "outside" 20.20.20.20
Networks
My side "inside" 172.30.30.0
Their side "inside" 192.168.1.0 NAT'ed to 172.29.0.0/28
[code]....
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Apr 16, 2011
I have a ASA 5510 actve/standby and create one site to site VPN with remote peer ip address xx.xx.xx.xx, Our VPN traffic running on 6 mb internet link for video conferancing traffic.Now client give another link 2 mb internet and client told to us our data traffic runnig on 2 mb link but this data traffic running on the same remote peer IP xx.xx.xx.xx.
Secondly request also they need failover over the ISP link.
how we immplement the same on ASA 5510.
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Apr 16, 2011
I have a ASA5510 actve/standby and create one site to site VPN with remote peer ip address xx.xx.xx.xx, Our VPN traffic running on 6 mb internet link for video conferancing traffic.Now client give another link 2 mb internet and client told to us our data traffic runnig on 2 mb link but this data traffic running on the same remote peer IP xx.xx.xx.xx.Secondly request also they need failover over the ISP link.how we implement the same on ASA 5510.
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Jan 23, 2012
I am building a site to site VPN from our headquarters to a customer. I am using an ASA 5520. The customer is using Cisco 3945 routers. The customer has two VPN termination points. The customer requests that we make one of their termination points the primary VPN connection and make the other termination point the backup in the event that the primary VPN fails. How do I configure this on the ASA? Does the below configuration fulfill this goal?
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Apr 8, 2013
We have 3 sites, with a Cisco ASA 5520 at each location.
HQ (Headquarters) internal network: 172.16.110.0/24,
DR (Disaster Recovery) internal network: 172.16.120.0/24
BO (Branch Office) internal network: 172.16.150.0/24
HQ and DR have a 100Mbps permanent MPLS link between each other.Branch Office has a Site 2 Site VPN connection to HQ. If it fails, it establishes a Site 2 Site VPN connection to DR. This works perfectly.Now the routing issue... There is no route to the BO in the routing table at HQ/DR. The default gateway is used to reach the BO and that works for HQ when the VPN is between HQ/BO. If the VPN fails over to DR/BO, HQ can't reach BO anymore.I need to have some kind of conditional route injection from the ASA where the VPN is established. I was considering a tracked static route, but I was wondering if the S2S VPN itself has a functionality to do so. I thought the Reverse Route Injection was it but it's enabled on our crypto map and doesn't seem to work...
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Mar 15, 2011
I configured ASA 5510 using dual ISP( Failover). Now my ASA working fine. Here my problem is My ASA 5510 configured for Site to Site VPN also.How my VPN switch to Secondary ISP automatically when primary ISP fails.
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Nov 24, 2010
I have configured ISP failover on ASA 5510 its working fine, when Primary ISP fails, Traffic is shifting to secondary ISP. On the ASA i have configured Site to Site VPN its working fine on primary ISP, when failover happens to the secondry ISP. Site to Site VPN should work on the secondry ISP.
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May 18, 2012
I have a requirement to create a site to site vpn tunnel on ASA 5510 from a remote site to my HO, ihave already other site-to-site tunnels are up and running on the ASA.The issue is my remote site has got the network address which falls in one of the subnet used in HO(192.168.10.0/24).My requirement is only My remote site need to accees couple of my servers in HO which is in 192.168.200.0/24 subnet.
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Jun 17, 2012
We have ordered a pair of Cisco ASA5520 (ASA5520-BUN-K9).Now there is a requirement to terminate site-to-site VPN from remote site. Do we need VPN plus licence for this and how much it cost?
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Jun 13, 2012
The scenario where a Site to Site VPN tunnel has been established between Site A and Site B. Lan on Site A can ping Lan on Site B. My problem is a Printer behind Site B needs to be accessed by using the WAN IP address of Site A. Also i could not ping the remote lan or printer from the router.
Below are my configure on the Cisco 877 in site A.
Building configuration...
Current configuration : 5425 bytes
!
! Last configuration change at 15:09:21 PCTime Fri Jun 15 2012 by admin01
!
version 12.4
no service pad
[code]....
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Oct 11, 2011
cisco products and am struggling getting a VPN going between an ASA 5505 and 5510. I have a VPN created (using the VPN wizward on both) and it shows the VPN is up, but I can't ping the remote site (from either side).
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Feb 7, 2011
I have ASA 5505, i configured site to site vpn between central site and remote site and is working. Now the problem is we use remote site for troubleshooting purpose, so we need to create a tunnel from remote site to central site. I need to configure such a way that remote site can craete a tunnel to central site, but central site not able to create a tunnel, it just respond to remote site.
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Mar 6, 2011
i have 2 router asa 5505 with base license i wanna make site to site vpn connection and remote site using vpn client to connect first i have hdsl router with 5 public ip i wanna try it by giving 1 public ip to each router and try the vpn but nothing work?
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Jan 27, 2012
i want configure VPN between backoffice which have ASA5510 firewall with static IP and site which have cisco router 1861 with dynamic IP.
how i can configure the site to site between them?
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Jun 8, 2011
I am trying think of a better way to provide redundancy on some internally protected networks. We maintain our own WAN/backbone between our primary site and backup site. Is it possible to have two Cisco ASA 5550s in setup for failover at completely different sites as long the networks connected are available?
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Mar 11, 2012
I have a setup like this:
A central WLC 5508 running code 7.2 with management vlan 10 ( range 10.10.10.0/24), corp-user vlan 100 (10.11.10.0/24) with WPA2 key, guest vlan 200 (192.168.0.0/24, on local dsl modem) with WPA2 key...
A remote WLC 5508 with code 7.2 with management vlan 10 (range 10.20.10.0/24), corp-user vlan 101 (10.21.10.0/24) with WPA2 key and guest vlan 201 ( 192.168.0.0/24, on local dsl modem) with WPA2 key
corp ssid "Corp-user" on both sites
Guest ssid "Guest" on both sites
Intention is that the AP's (3500) on the remote site should fail over to the central WLC in case of any failure on the remote WLC and that the users could remain in their local vlan.
What kind of configuration would make this work?
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Jul 12, 2012
I am trying to set up a site to site ipsec connection. AT site A, I have Vlan's 652-10.55.216.0/24, Vlan653 -10.55.217.0/24, Vlan 654-10.55.217.0/24 and Vlan655-10.55.219.0/24 and at site B, Vlan650-10.55.214.0/24 and Vlan651-10.55.215.0/24.The problem is that I am unable to get any associations when i do a "sh crypto isakmp sa"/"sh crypto ipsec sa" on either router at each site.I am also unable to ping by pluging in a laptop into the site at each site. Laptop at site A is set to access vlan 655 and laptop at site B is set to acess vlan 651. I can ping all the devices from one end to the other.I have turned on debug crypto isakmp, debug crypto ipsec, debug crypto ipsec errors but dont get anything at all as output.I have attached the sh run for each router Cisco (1941/K9) and switch (Catalyst 3750) at each site.
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Nov 21, 2012
I have an ASA 5525 and need to configure site to site ipsec vpn to 3 peers. I currently have an existing /28 public address from my ISP that is used by other services.Is there a way to use this existing ip range to configure IPSEC tunnels to 3 peers ?
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Sep 12, 2011
I configurated Ipsec vpn at asa 5510. my inside ip 192.168.10.156my public ip: 85.x.x.xmy peer ip : 62.x.x.x
the project is that:
the remote site want the interesting traffic like that:
source ip 172.16.1.104 can access destination ip 10.0.154.27
My inside ip is 192.168.10.0/0 and i can not to change it 172.16.1.0/24 and i can not to add this ip at my network.
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May 30, 2013
I would like to know both Cisco 2901 or 2921 router and Cisco 5505 ASA can build site to site VPN.
1) what is the different to build site to site VPN between router and firewall ?
2) which is the best choice if using in site to site VPN connection ?
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Mar 6, 2013
Our Headquarter (asa 5510) is running a site to site vpn connection with a Branch office (router 2811). All remote users are accesing the internet through the VPN and also accesing headquarter file servers.I want to know if there is a way for some remote users to be able to use the vpn for accesing the file servers but to access the internet through the branch office. The rest of the remote users will be still accessing the internet through VPN.
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Nov 27, 2011
We've just deployed a site-to-site VPN using a 5505 ASA on the client's site and a checkpoint Nokia FW on our site. Everything seems to be fine except that the user's connections to their file shares seem to be intermittently dropping. One minute the connection to the shares is there, next thing it's lost. There is no logic to it because no two users are experiencing issues at the same time, as a matter of fact even on the same PC where a user has access to 3 shares on 3 different servers, one could be showing as connected whereas the other two be dropping. [code]
As you can see the Duplex and Speed are set to auto, I've rectified this since then and I'm keeping a close eye on the output errors, and collisions. However, I'm afraid that this did not rectify the issue and the users are still experiencing intermittent connection dropping to their file shares over the VPN!
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Jul 28, 2011
I have a request to establish a site to site VPN with a customer. While collecting the information I give them our local network subnet which is a private subnet (192.168.5.0). They asked me if I could give them a public address instead. They can not work with the 192.168.5 subnet. Is this possible?
My side of the VPN is an ASA 5505 running 8.2(2). The other side i believe is a Checkpoint.
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Apr 22, 2012
I've setup a site to site vpn on an ASA 5510 using ASDM (as I have many times before) and the tunnel appears to be up but I am not able to pass traffic. When I run the packet tracer from my inside network to the remote destination network, it shows that it is blocked by the implicit deny ip any any rule on my inside incoming access list.
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Aug 13, 2012
Got an ASA5505 connected to another endpoint running IPsec and being NAT'd at each end to a 10.0.0.0/24 network. I can pass other types of traffic through the ASA 5505 but not RTP traffic. The moment it is NAT'd and hits the firewall rules it gets denied by the default deny at the bottom of the list.
Currently the rules are as follows
Incoming External
allow ip any any
allow tcp any any
allow udp any any
default deny
[code].....
It wont allow us to setup a voip call...however when the same call manager sets up a voip call NOT using this ipsec tunnel it works just fine.
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Jul 15, 2012
we have two ASA 5510s one in 8.4(4) and one in 8.2(5) in a site-to-site VPN setup. All internal traffic is working smoothly.Site/Subnet A: 192.160.0.0 - local (8.4(4)) Site/Subnet B: 192.260.0.0 - remote (8.2(5)) VPN Users: 192.160.40.0 - assigned by ASA When you VPN into the network, all traffic hits Site A, and everything on subnet A is accessible.
Site B however, is completely inaccessible for VPN users. All machines on subnet B, the firewall itself, etc... is not reachable by ping or otherwise.There are also some weird NAT rules that I am not happy with that were created after I upgraded Site A ASA to 8.4
Site A internal: 192.160.x.x External: 55.55.555.201(main)/202(mail)
Site B (over site-to-site) is 192.260.x.x External: 66.66.666.54(all)
I pretty much just have the basic NAT rules for VPN, Email, Internet and the site-to-site.What do I need to add for the VPN to be able to access the site-to-site network?
Here is my NAT config:
nat (inside,Outside) source static DOMAIN_LOCAL DOMAIN_LOCAL destination static VPN_Network VPN_Network no-proxy-arp route-lookup
nat (inside,Outside) source static DOMAIN_LOCAL DOMAIN_LOCAL destination static DOMAIN_REMOTE DOMAIN_REMOTE no-proxy-arp route-lookup
!
object network DMZ_Network
nat (DMZ,Outside) dynamic interface
object network DOMAIN_LOCAL
[code]....
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