Cisco VPN :: Forcing ASA5510 To Follow Specific Route?
Jul 11, 2011
My setup has two firewalls to the internet, one is for all internal users who want to access the internet and the other is an ASA5510 acting as VPN terminaton to remote workers accessing using Anyconnect.Each of the firewalls has a public interface on the same network (ex. 196.160.100.192/26).We have a server with a public interface, and all traffic (internal and external) has to access via the public ip (again in the same network as above) and there are different profiles and access levels on that server depending if you are accessing from an internal IP or a public IP.Well, when users are connected thrugh the VPN, although they have an internal IP address, as they are accessing the server on the public IP, the ASA sends the packets through its external interface (direct connected route) instead of sending it to the default internal gateway that is a "trusted" entry point on the server.Any way to force the ASA to send that traffic to the internal default gateway instead of sending it to the external (direct connected) interface?
PS: I have no access to the server (appliance under warranty) so I can't make any changes to it...
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Apr 23, 2012
My setup has two firewalls to the internet, one is for all internal users who want to access the internet and the other is an ASA5510 acting as VPN terminaton to remote workers accessing using Anyconnect.
Each of the firewalls has a public interface on the same network (ex. 196.160.100.192/26).
We have a server with a public interface, and all traffic (internal and external) has to access via the public ip (again in the same network as above) and there are different profiles and access levels on that server depending if you are accessing from an internal IP or a public IP.
Well, when users are connected thrugh the VPN, although they have an internal IP address, as they are accessing the server on the public IP, the ASA sends the packets through its external interface (direct connected route) instead of sending it to the default internal gateway that is a "trusted" entry point on the server.
Any way to force the ASA to send that traffic to the internal default gateway instead of sending it to the external (direct connected) interface?
I have no access to the server (appliance under warranty) so I can't make any changes to it...
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Mar 6, 2012
How to force traffic back out the same interface from whence it entered. Review the following topology.
Internet ---> ASA 5510 ---> Static IP1 ---> F3.1 ---> 1811 F0
|-------> Static IP2 ---> F3.2 ---> 1811 F5 ---> VLAN Int
ASA F3.1 10.1.254.9/30
ASA F3.2 10.1.254.13/30
1811 F0 10.1.254.10/30
1811 F5 10.254.1.14/30
When pinging the public IP of ASA F3.2 from the internet a reply is never received because the default route on the 1811 points to ASA F3.1.
How do I get the replies from the 1811 to go back out the same interface from whence it entered ? I am sure the answer is policy-based routing, but not sure how to write the config.
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force something such as a Telnet client to use a particular outbound port when opening the TCP connection?
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Aug 16, 2012
In case customers buy IP transit(there is a BGP session between ISP and customer), they often ask for default route and for example prefixes from local internet-exchanges. What is the advantage to have default route + certain smaller(for example /17, /18 and /24) prefixes?
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Feb 9, 2012
I have Catalyst C3750G switch
with configured route to subnet 192.168.201.0/24
ip routing
ip route 192.168.201.0 255.255.255.0 192.168.160.13
192.168.160.13 is accessible
[Code].....
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Mar 8, 2011
I Changed my old firewall by an ASA5510, since that change my internet connexion is slower.Some websites takes longer to display.I would like to know if there are some specific configuration about TCP connection or DNS to setup?
I just configured the ISP DNS :
Dns server-group DefaultDNSname-server 194.2.0.20 name-server 194.2.0.50
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Sep 12, 2012
I currently have a site to site VPN running connecting a branch office and the Main office using a ASA5510 and ASA 5505. currently PC's at the branch can access the network in the main office using interface 0/1, but we have added another ip range using interface 0/2 and I can't seem to route the traffic to both interfaces. I currently have 0/1 as inside 192.168.10.1 which works, and have added 0/2 as Inside2 192.168.20.1. I know I am forgetting something, any commands to route incoming VPN traffic so PC's at the branch office can connect to both IP ranges?
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Nov 14, 2011
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Jan 2, 2012
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access-list 101 deny any any neq www
access-list 101 deny tcp host 10.0.2.2 any
access-list 101 permit tcp any any
route-map proxy-redirect permit 101
match ip address 101
set ip next-hop 10.0.2.2
Unfortunately the ASA does not take the "set ip next-hop" command, I get an invalid input error message and if I at the route map config prompt type "?" only the "metric" and "metric-type" commands are listed as available.
This happens both on 8.2 (ASA5510) and 8.4(2) (ASA5505). Since others are able to make this work, I assume there's something else on the ASA that I have to set to enable this command?
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May 12, 2011
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Jul 29, 2011
We have two ASA5510's connected to two different ISP's and both able to initiate a site-site IPsec connection to a remote site. Depending on the state of the ISP's either ASA may initiate this VPN.We use Reverse Route Injection into OSPF for VPN clients and it works fine with the route being distributed when a client connects and disappearing when there are no clients.So we thought we'd try it for our site-site VPN's. Unfortunately when we enable Reverse Route Injection the routes are distributed regardless of whether the VPN is up or not, so if one ASA has initiated a VPN it's reverse route is distributed (which is what we want) but the other ASA also distributes a route for it's non-existent VPN. The result is that our gateway routers see two OSPF routes and can't ascertain which route is actually up.
Is there any way to distribute the route using Reverse Route Injection (or any other method) only when a site-site VPN is actually up? For various reasons we can't use BGP or other gateway routing protocols.Our ASA5510 are currently running IOS 8.2(1)
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Nov 12, 2012
We have a 5510 and I have a second ISP setup for a backup link. We have 4 ports connected to 4 different internal subnets. I want to force one of the ports to use the backup ISP link at all times. I'm having a little problem with where I need to make the changes in my ASA.
Interface "outside" is my main ISP
Interface "building3" is my backup ISP.
I want to force the "Guest" network to use the "building3" link for all traffic. Here's a snippet of my config
global (outside) 10 interface
global (building3) 10 interface
nat (inside) 0 access-list nonat
nat (inside) 10 0.0.0.0 0.0.0.0
nat (Guest) 10 0.0.0.0 0.0.0.0
[URL]
Do I need to change the global pool or create a new one? I have a couple free public IP addresess on the building3 subnet I can use for a pool.
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Here are the current port settings:C3750G:
interface GigabitEthernet1/0/1
switchport trunk encapsulation dot1q
[Code].....
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Feb 25, 2012
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ASDM v.6.1
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The IKE Proposal field has a number of possible options including: pre-share-aes-256-md5, pre-share-3des-md5, pre-share-aes-256-sha, pre-share-aes-192-sha, pre-share-3des-md5, pre-share-aes-sha and pre-share-3des-sha.
I am able to pick a specific IPSec Proposal w/o issue but when I attempt to do the same for the IKE Proposal, and click OK the choice does not "stick" but rather returns to the entire list as defined above.
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!
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!
[code]....
I want to assign a specific IP to a specifig host by MAC .. for example i want the ip 192.168.1.10 to be assign to the host "client1" by mac.I've been creating a new dhcp pool static:
!
ip dhcp pool static
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I have ICMP inspection and icmp-error inspection enabled.
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[Code].....
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