Cisco VPN :: ASA5510 L2L VPN Tunnel End Point Interface?
Feb 12, 2012
Is this kind of configuration possible? Can the VPN tunnel go thru the Firewall to another interface (DMZ) on it? And not to end “outside” interface.I have DMZ network in ASA5510 interface and I like to end the L2L IPsec VPN tunnel on it. The tunnel mas go thru the ASA from Internet via outside to the end point DMZ interface. The traffic is decrypted to that interface. So the VPN L2L peer interface is the DMZ interface IP address, not the Outside interface IP address.
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Dec 3, 2012
I have two routers on my internal network.
10.10.199.106 is a Cisco ASA5510.
10.10.199.108 is a Sonicwall NSA 3500
The sonicwall handles our site to site VPN tunnels. The Cisco handles our client to site VPN connections.
I have a unit that points to 10.10.199.106 (Cisco) for internet access. All other clients on the network point to 10.10.199.108 (Sonicwall) for internet access.The device in question, a Synology NAS, is using 10.10.199.68 as it's IP address.
I'm trying to hit the web interface on the NAS from a remote site across our VPN tunnel. The IP scheme on the remote end of the VPN tunnel is 192.168.72.0/24.
Going through the VPN, I can hit every object on the network that uses .108 (Sonicwalll) as it's gateway. However, I cannot hit the unit that uses .106 (Cisco) as it's gateway.
I added a route statement (using ASDM) that routes all traffic destined to 192.168.72.0/24 to the Sonicwall so it can send it back down the VPN tunnel. If I'm understanding routing correctly, this should allow responses from NAS destined for 192.168.72.0/24 to go back down the VPN tunnel.
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Sep 23, 2012
I'm in process of purchasing a new Cisco routers for our branches that will be used primary to enable IPSec virtual tunnel interfce with "tunnel mode ipsec ipv4". does the default IOS IP Base supports this feature? or i need to purchase DATA license or SECURITY license?
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Oct 25, 2011
I have problems with a vpn configuration for point to point ipsec tunnel.Communication stops randomly, I have the ability to view any record or log of court?
model cisco router on a 877
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Dec 26, 2011
Our internet connection changed and so did our public IP addresses, I'm trying to re-establish our VPN tunnel with our client, but we haven't be able to get the connection back up even though only 2 IP addresses have changed. Below is my ASA 5510 config file Our WAN from the ISP is: 65.xx.xxx.104/30 and our LAN is: 67.xxx.xxx.128/27, I'm trying to use: 65.xx.xxx.106 as the endpoint and 67.xxx.xxx.130 as the host via the tunnel.
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May 20, 2013
I have an ASA5510 configuration that I'd like to add to.In this configuration there is a site to site IPSEC VPN tunnel to a remote location.It is tunneling a particular subnet for me and everything is working.In the remote subnet, there is an ASA 5525-x connected on the outside interface. Let's say for argument's sake, the outside IP is 210.0.0.1.On the Inside interface, i've configured 10.240.32.0/24 network.The only static route I have configured on the 5510 is the default gateway that goes to the ISP.I assumed that I have to add: route Outside 10.240.32.0 255.255.255.0 210.0.0.1 1.I did this, but i'm not able to reach the destination 10.240.32.0/24 network. I can't see anything hitting the 5525-x and the only thing I see on the 5510 is the building outbound ICMP and the teardown for the ICMP.
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Oct 1, 2011
We've created an ipsec VPN tunnel between our ASA5510 (8.3) and a Pix firewall (not sure of the specific version, etc).
The tunnel works fine, except for timing at times (traffic only goes through a few times a day), and a wierd problem with all traffic being allowed even though I'm only allowing specific ports (SFTP, SQL Server 1433) from a network at the client site to a specific server in our Data center.
I was surprised that I could RDP into the server, as well as telnet any other port exposed on this server from the client site. Now as I write this i realize that I did not check whether any of our other data center servers can be reached via the tunnel.....
Not having set up many VPN tunnels before using ASA (only Checkpoint - Checkpoint before this), I'm wondering whether i need to include another rule in the VPN tunnel cryptomap to deny all other traffic from their network to our network, or whether there's a global config I need to add a rule to.
I am moderately conversant in the command line, but because of my lack of Cisco VPN tunnel experience I did use the ASDM site-to-site VPN tunnel wizard to set the tunnel up. Not sure if there were any defaults i would have to override using that method.
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Apr 26, 2012
I have an asa 5510 that has many(17)ipsec vpn site tunnels on it. One of the tunnels, one running to a c1900isr at the other end, is experiencing 400 to 500ms latency through it. It does appear to be the tunnel only because there is no latency to the internet. I cleared the tunnel group out and readded it to no effect. isp says everything fine. any other known causes for this
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Sep 21, 2011
I have an ASA5510 running in production. I have about 28 site-to-site vpn tunnels that have been working perfectly for the last year or so. I was running 8.0.4 and recently upgraded to 8.2.4. Since the upgrade, I have an issue that I haven't figured out. One of my clients with a tunnel can no longer FTP us. When I do a packet tracer on the ASA, all phases are "ALLOW" but at the very end, the action is "drop" due to "IPSEC spoof detected." None of my crypto config for the tunnel including the crypto ACL has not been changed. This same tunnel had NO issues prior to the 8.2.4 upgrade.
I thought about trying to disable "inspect FTP,. I am running FTP passive mode on the ASA so I don't believe "inspect FTP" is required.
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Feb 7, 2012
For years now we've had an ASA5510 running an old version of ASA/ASDM (7.0/5.0) and couldn't access ASDM through a modern system with a recent JRE, so we didn't bother with this.
However, we've recently upgraded ASA/ASDM for purposes of adding failover and want to be able to access ASDM through our site to site tunnel. The site to site tunnel gives us access to the VLAN that the firewall is the gateway for, but not access to the firewall itself.
This side of the network is the 10.1.55.0 subnet, and that side of the network is the 192.168.1.0 subnet. I can ping devices on the 192.168.1.0 subnet, but not the firewall, (not that I really need to) and devices can ping me back. I can access ASDM through RDP or ssh into a server on the 192.168.1.0 subnet, but not directly from the 10.1.55.0 subnet.
This is the current config relative to the 10.1.55.0 subnet:
access-list trust_nat0_outbound extended permit ip 192.168.0.0 255.255.0.0 10.1.55.0 255.255.255.0
access-list untrust_cryptomap_600 extended permit ip 192.168.0.0 255.255.0.0
[Code]....
As far as I'm aware, the tunnel comes into the firewall through the untrust (public) interface, because that is the destination of the tunnel on the 10.1.55.0 subnet side.
What am I missing here that would allow asdm access through the untrust interface for the 10.1.55.0 subnet?
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Mar 28, 2010
I have successfully setup the AnyConnect VPN (connecting to our ASA5510) and have split tunneling configured. My remote users can access inside LAN servers as well as the Internet from their remote location. What I would like to know is is it possible to change the split tunnel and not allow access to the Internet from the remote location but force the remote client to go through the VPN and out our internal edge firewall to the Internet? Basically I need my remote clients to access the Internet but I would like for their Internet traffic to go through the VPN and out our edge firewall. This will allow the same security as if they were sitting in the office.
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Mar 14, 2013
on the outside interface i cant perform the command ip address dhcp setroute.I get the error: IP and subnetmask form invalid pair indicating broadcast or network address.The commands are there when I do the ? command. It just will not accept the command with or without dhcp.I am trying to test an ASA-5510 as a 4G failover to our ASA-5520. This is Verizon's solution but they did not provide IPs, they use passthru on the 4G modem so I'm trying to set up dhcp. It worked a few days ago. Not sure what Im missing. The IP I got last time from Verizon was 192.168.0.199.
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Apr 2, 2013
I currently have an ASA5510 with 2 interfaces (outside and Inside) running remote VPN for clients and L2L VPN for a couple of sites. I have traffic entering the inside interface, matching interesting traffic, being wrapped up in IKE / IPSEC and sent out via the outside interface. All straightforward so far.Now I have a new VPN which is required to go over another interface and not the outside. The traffic comes in to the inside interface as normal and should be matched via ACL, encrypted and sent out th e new interface however the traffic is simply sent out of the outside interface and doesn't get any IKE headers. If I reconfigure the interface to be be the outside it does at least match the ACL, wrap it up nicely in IKE and try to get to get to the remote peer.My questions are why does this behaviour occur and why isnt the traffic marked interesting and sent out the new interface.I don't have any issues creating a new VPN if I want it to go external, I just add the required information to the outside_map but i need the traffic to be encrypted and sent over another interface. I not a huge fan of the GUI for this but I've tried both CLI and GUI with the same results.
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Jul 23, 2011
i have a strange issue on a link between two ASA5510: both ASAs are interconnected by a P2P Fastethernet link, and the traffic between both ASAs is being secured by a L2L IPsec tunnel. The configured MTUs are 1500, however packets bigger than 1020byte are being dropped. IOS is 8.0(5). I didn't find so far any CAVEAT describing it.
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Nov 2, 2011
We have an ASA 5510 with ~100 vpn lan2lan. Now we need to migrate to a new ISP, so we have connected a new asa interface to the internet. Default gw is still on old connection. We are trying to migrate vpn lan2lan using static routes, pointing ip of remote vpn gateway to new isp gateway. VPNs going up, but when they try to send traffic, I can see Rx counter growing up, but Tx remains 0.. I've tried with different vpn (old and completely new), and problem remains.
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Dec 5, 2011
We have two ASA5510's, running IOS ver. 8.2(4). We setup Load Balancing on two ASA's. Will there be any problems if we change the IP address of the outside interface on one of the ASA's?
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Jul 5, 2012
We have ASA FW 5010 in our organization and we have 4 DMZ's under the DMZ interface on ASA and all DMZ's are created on sub interfaces and assigned different VLANS on each DMZ's.
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Dec 17, 2012
We use filter rules on an ASA5510 firewall to direct clients to a web filtering server which generally works very well. However lately we're finding that despite having more web filtering licenses than users, the web filtering licenses are being consumed up, mainly because of a recent increase in the rollout of ipads, iphones, androids etc. We could deploy a proxy server in the wireless DMZ to make all the wireless devices appear to web filter as a single IP, and apply a single policy, but that brings it's own problems. My question is: Is there a way to hide them all behind the interface IP instead, so that all wireless devices appear to the web filter on the LAN as the wireless dmz interface IP rather than the wireless device IP?
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May 21, 2011
I find that one of the ethernet interface of ASA5510 always display RED light
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Mar 10, 2011
Our ASA 5510 is running 8.0(5). We recently upgraded the license from base to security plus. By doing so the capacity of the the external port Ethernet0/0 and Ethernet0/1 should increase from the original FE to GE. But, we were still seeing 100 Mbps on our Ethernet0/0 interface. We figured that out that the provider switch is only supporting 100 Mbps which is a bottleneck for us.The provider will be upgrading there switches to 1 Gb switch.
We will have to swap the switch connections now from 100 Mbps to 1 Gb switch.What commands should we be familar ourself with?Though this will be doine in our maintenace window.All the transaltions/connections will be dropped in our production environment so we are kind of scared.
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Dec 2, 2012
I have a scenario where there is an ASA5510 configured as follows:
Interface0 = Outside
Interface1 = LAN
Interface2 = DMZ
Interface3 = unused
Running ASA version 8.2[1]
All network operations are fine, as are the IPSEC tunnels to other branch offices, and the incoming SSL VPN accessed via the IP address assigned to the external adapter.
My problem is that I have a device on the DMZ that needs to access the AnyConnect service hosted on the external adapter so that it can access LAN resources. When I try accessing it, I see the following errors appearing in the debug log:
3Dec 03 201212:10:50710003[DMZ client address]51031[AnyConnect ExternalAddress]443TCP access denied by ACL from [DMZ client address]/51031 to DMZ:[AnyConnect ExternalAddress]/443 If you look closely, it suggests an ACL issue from the DMZ client to the external AnyConnect IP address BUT it suggests the Anyconnect IP address is on the DMZ interface.
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Oct 22, 2012
I have been working on figuring out a VPN problem on my companies ASA5510. I was accessing the device via: ASDM, SSH using Putty, and even initially with a console cable (also using Putty) using a computer in the networking closet. All 3 of these access methods worked properly for me.I believe I may have inadvertently changed something as of Friday using ASDM. I am mostly assuming this because, as of yesterday I can no longer connect to the device. I actually cannot even communicate with it (ping the interface I normally use to manage, which I could previously ping). No computer on the same subnet as me is able to ping the interface. The device is still accepting VPN connections, dishing out DHCP addresses and everything else it normally does, but I really need to be able to gain access to it again. I am thinking to reboot the device when there is some downtime, in the hopes that ASDM doesn't save to startup-config and only to running-config.
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Jun 23, 2011
Recently, I've been having significant problems with denial of service on our ASA-5510. Two IP addresses in particular attack my ASA regularly. What kind of rule do I need to create to deny these IP's access to my firewall?
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Aug 4, 2011
I'm currently configuring an ASA5510.I connected a laptop (IP 192.168.96.18/255.255.255.0) to port 0/2 and tried to ping 192.168.100.2 ... impossible to ping outside interface.I resetted the config of the ASA to retest more simple. [code]
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Jan 21, 2013
I try to SSH and get access denied.
I try to ASDM and get "Unable to launch device manager from 172.16.252.100"
I think I am missing something. Software is 8.4(5) and running in Transparent Mode.
Inside/Outside are in bridge-group 1. No BVI is configured as we will be using Management0/0 for access.
login as: test
test@172.16.252.100's password:
Access denied
[Code].....
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May 13, 2013
We have a Cisco ASA 5510 with:
-version: asa845-k8.bin
-ASDM: asdm-711-52.bin
Interface "Outside" is a PPPOE configuration.We currently have 36 site to site VPN connections up and running through the "Outside" interface. Now when we try to add, via ASDM, a new site to site VPN connection, we can not choose the "Outside" interface. The interface is just not available. All other interfaces are, bot those are inside interfaces.
I tried running ASDM on a different computer (thought that ASDM or java got corrupted perhaps), but the same problem appeared.Now when we "shutdown" the outside interface and "no shutdown" it again, the "Outside" interface is available again when you add a new site to site VPN profile.
Sidenote: if we check the current profile of a succesful running site to site VPN, it say's that it's using an inside interface. But that is, ofcourse, not possible.
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Sep 7, 2011
I'm seeing on an IOS VPN Tunnel interface which keeps going down and then back up...
We have a Cisco 2811 acting as a VPN Hub router on the backbone, which connects to various client sites over VPN. Of the 7 VPNs configured so 6 work well and are generally trouble free. The VPN interface on the other VPN keeps going down ,multiple times throughout the day, just recently the client has been noticing loss of connectivity. The remote router is managed over the VPN so there is always some kind of traffic over it.
*Sep 7 06:40:53.631: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel111, changed state to down
*Sep 7 06:41:23.991: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel111, changed state to up
[Code]......
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May 17, 2012
I am currently managing an ASA5510 using ASDM through the management port but I would like to manage the ASA through the internal port.
My concern is that I thought I remembered reading someplace that if you setup an internal port for management that it can't be used for anything else. Is this correct?
I only configured one internal port and it is the path to my LAN. I would hate to configure the port for management only to find that I disconnected my firewall from my internal network in the process. Can I use my one and only configured internal port for both ASA management and route from my LAN thru the ASA firewall?
I currently have the management port set to 192.168.1.1 and my internal interface is 10.1.1.1. If I open ASDM and connect thru the management port and select Configuration/Device Management/Management Access/ASDM/HTTPS/Telnet/SSH
select "ADD"
select access type "ASDM/HTTPS"
select interface "internal"
IP Address "10.1.1.0"
Mask "255.255.255.0"
Will that give me access to ASA management thru my internal network but cripple my network access to the ASA?
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Sep 13, 2011
I've been trying to configure the threat-detection scanning-threat shun feature on my ASA5510 running 8.4(2) for some days now. From searching the support community I can see that I'm not the only one having a problem with this feature. The problem I'm having is that after configuring scanning-threat shun, no outside attacking hosts are being shunned. I'm using nmap to simulate a scanning attack. [code]
Is this the expected behavior of scanning-threat shun? If so this feature is of very little use to me as blocking my inside LAN is not my goal. I'm trying to protect my LAN from Internet attack. I can add the except command and exempt my LAN, but this still doesn't fix the problem of outside hosts not being shunned.
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Mar 27, 2011
We have 2 firewall (ASA5510) pairs. Each pari configured for Active/Stdby mode.
Pair1 : Internet browising, Remote access VPN, Citirx access & L2L VPN access
For this pair , I need to move the 'outside' interface to Gig 1/3 and change the IP addresses. (minimize the downtime)[code] Remove the ip from outside interface and add the new IP and enable to monitor interface outside?
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Mar 10, 2011
we have two Cisco ASA 5510 in failover configuration.We tried to change the public IP address on the Outside interface of the primary device but it didn't works. The new IP is not reachable from Internet nor pingable from device on the same LAN.The new IP address is in the same subnet of the old IP.
From the switch on which the ASA is connected and from another Cisco PIX we can see the ARP entry. In the analysis, on the old public IP address there was a VPN site-to-site and Webvpn defined.We tried also to shut/no shut the interface and reboot the device.
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Jul 31, 2012
I have run out of public facing IP addresses and I need more. Assuming I have been issued 1.1.1.0/24 and my new/additional range/subnet issued is 2.2.2/0/24 - Can I carry on with the same configuration on my ASA5510 and just add static NAT for new services in the 2.2.2.0/24 range.
i.e.existing config
route 0.0.0.0 0.0.0.0 1.1.1.254 (upstream ISP)
Interface outside ip address 1.1.1.1 255.255.255.0
NAT 2.2.2.1 to 10.1.2.3
or, assume my ISP will deliver 2.2.2.1 to my outside interface (1.1.1.1.1/24) and if my NAT is in place it will get delivered to 10.1.2.3 inside.
or, put another way I dont need change my set-up as I just static route to my ISP!
my real public IP is a /27 can I use my broadcast address (its a legit public IP address)?
i.e 1.2.3.0/27 = 1.2.3.1 to 1.2.3.31
Outside interface = 1.2.3.1/27
Can I use 1.2.3.31 and NAT it to an internal server?
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Jun 24, 2011
Do I correctly understand that when two ASA 5510 are in fail over pair, the switchover from primary to secondary if one interface of primary goes down shall happen ONLY if failover link is up? So when the fail over link is down and one interface on primary got down also, interface tests between the two ASAs still are being done , but secondary SHALL NEVER try to become active.
In this case why to make tests on data interfaces ? What is the reason to make them? If the knowledge of that some interfaces of primary became down comes through failover link - no need to make additional interface tests - primary will tell about the failure to secondary. If so should run no monitor-interface if name command to dis load devices and network by foolish tests?
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