ASA NATing For An IPSEC Endpoint?
Mar 18, 2011
Our ISP gave us a /30 for our external connection (with one IP being their side, and the other our firewall's outside int) and they then route a /28 down to us to give us 14 public IP addresses. Usually we use static NATs to give internal servers a public IP, and it works fine.
However, now I need to setup another VPN device with a public IP from our /28 pool. How the heck do I nat that? Should I give it's external int a private IP, and then NAT it at the first firewall? The 2nd firewall will be a VPN end point, and I'm afraid the NAT will break that.
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Mar 29, 2012
I have an ipsec tunnel IP is changing from mythical 200.200.200.182 to 200.200.200.254. Is it possible to change the .182 ip in below config via the CLI to .254 and have the site-to-site vpn continue to work? [code]
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Jan 5, 2013
I am trying to connect my RV110W from my home office to our office IPSec router. I have a dynamic IP address and am using DDNS, therefore the RV110W local endpoint needs to be configured with my FQDN, not the IP address as this will change.
On page 100 the manual states
Step 4 -
• Local WAN (Internet) IP Address—Enter the public IP address or domain name of the local endpoint (Cisco RV110W).
This option is not available in my router - I am running firmware 1.2.0.9
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Oct 19, 2011
I have just received 4 static ip's from my isp, i want to be able to point these ip's at different services on my internal servers, for example: [code]. The firewall I have is Cisco PIX 515, how to set the NATing up or commands?
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Apr 9, 2013
I have a client with an ASA 5505 who has several networks he's trying to get communicating over a VPN tunnel with a remote office. One of the networks is not working because it's also in use on the management interface of the other side of the tunnel and neither side seems willing to re-IP their internal space.
Their proposed solution is to NAT the conflicting network on the firewall on this side to a different subnet before passing it across the tunnel. How do I implement a NAT that only the VPN tunnel uses while keeping the rest of the traffic that comes across this device un-NATted?The network in question is 192.168.0.0/24. Their desired NAT target is 172.16.0.0/24. ASA config is attached.
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Jul 29, 2012
I am currently trying to apply a reverse NAT on asa 8.2 and not sure how to do this. I have done this on asdm 6.2 for asa 8.3 but the options are not simiar on 8.2. Is there a CLI equivelant?
I am trying to Achieve the object below for any traffic coming from outside interface to the inside interface with any source address to destination 10.X.X.58 then translate it so that it become 192.X.X.X to address 192.X.X.58. This is so that communications can traverse internal network as the server is not ona DMZ.
I have done this on 8.3 (shown below) but do not know if it is possible for 8.2, I have tried replicating the same command on 8.2 but commands are not recognised.
nat (outside,any) source static any 192.X.X.X destination static 10.X.X.X 192.X.X.58
Should I just upgrade to 8.3? never done it before so not sure of the consequences.
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Jan 28, 2011
Problem with the PIX 525e while "NATING ".
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Jan 9, 2012
I just migrated our office network router to a RV082. While configuring it, I came across three problems:
(1) From our ISP we have four public IP addresses which I want to make use of for outbound traffic. With the previous router we used we could configure LAN IPs(ranges) to map to static public IPs. Does RV082 support this? I could not find an option for that at the web-interface. From what I understand the 1-1 NATing only goes both incoming and outgoign ways and actually is 1-1 and not the many-to-one I am looking for.
(2) How is it possible to configure incoming port forwards to use a specific WAN interface? Will it always be the primary WAN interface?
(3) Does the telnet access provide more configuration options? I could not log in to it with the same user credentials as with the web-interface.
Serial Number : NKS1532xxxxFirmware Version : v4.0.4.02-tm (Jul 4 2011 13:30:56)PID VID : RV082 V03Firmware MD5 Checksum : 1f84d8d0a2a8b99f9bfa4409e64547aaLANWorking Mode : Gateway
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Feb 28, 2011
I am facing problem in my setup which includes cisco 3560 and cisco 2811 router.Actully I am ruuning BGP in 3560 l-3 switch.Some of the customers are connect to 3560 switch via 2811 router,all of those customer having same rate-limit.Some of the customers are directly terminated in 3560 switch where i configure vlans,all vlans has different rate-limitsPROBLEM:I need to do nating to surf some of the ips only for one customer on the 3560 switch.so i m using route-map using acl on switch and doing natting on router.Using route-map i m redirecting traffic to my routers loop back interface, where i m doing natting and send it back to the switch.
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Feb 19, 2011
We have a RA Vpn split_tunnel setup in one of our locations which is working fine in all areas except for traffic destinged for one specific website using https. This vendor only allows the HTTPS connections to them to come from certain outside IP addresses. ssentially it should work like this:RAVPN_client (10.4.4.0/27) --> https request to vendor_ip (208.x.x.x) ---> ASA55XX --> NAT_to_outside_ip --> https request to vendor_ip (208.x.x.x) need to understand how you would go about NATing ONLY this specific https traffic from the RA VPN while not having to alter the setup otherwise. Internal hosts (aka behind the ASA physically) do not have any issue getting to this site, as its nat'd to the outside ip address as we expect.Here is what we are using for the NAT Exemption list he 10.2.2.x, 192.168.100.x and 172.23.2.x are other remote sites that we have. RA VPN users are using the 10.4.4.0/27 do not have any issues connecting to them, no matter the protocol.
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Oct 12, 2011
I have the following network connected and configured to a single Cisco 1800 router.
VLAN 2 (10.1.20.0/24)
|
int vlan2, ip address 10.1.20.1
|
Cisco 1800 ----- int fa0, public ip address ---- Internet
|
int vlan3, ip address 10.1.30.1
|
VLAN 3 (10.1.30.0/24)
VLAN 2 is server vlan with a webserver.
VLAN 3 is clients.
NAT configuration:
VLAN 2 and VLAN 3 is using NAT to access the internet, and both is configured as inside interfaces.fa0 is configured as outside interface. Now I don't know if this is about NAT, but I've tried several things without luck.
Problem:
A client in VLAN 3 tries to access a domain on the webserver in VLAN 2.It starts by sending a DNS query to a DNS server located at the ISP, and gets the ip address for the domain, which is of course a public ip address. Then nothing happens because the client tries to access the domain on the webserver using the public ip address, and the webserver have a local ip address 10.1.20.20 which is on the local LAN (VLAN 2).
I've tried NAT because I have to change the destination ip address, but I can't seem to get it right.
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Dec 22, 2012
i have asa901-k8.bin" in my asa firewall and downlaod liecnce from cisco,now i dont know how to allow internet to my user.?
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Jan 17, 2011
I have a Cisco 881 VPN Router (TX) which connects to the Concentrator at our corporate office (NY). The TX subnet is 10.16.x.x. The corporate subnet is 10.1.x.x, 10.2.x.x, 10.9.x.x.Right now, the 881 router is only used for VPN to corporate, but, I would like to use it our primary router. We have to ISP's, and I would like to allow traffic to come in on either interface to our internal LAN to a few servers.
LAN - 10.16.1.3 / 255.255.0.0 ISP1 - 175.15.110.242 / 255.255.255.240: Gateway: 175.15.110.254ISP2 - 211.106.234.114 255.255.255.240, Gateway: 211.106.234.113Required NAT / port forwarding:211.106.234.115 -> 10.16.9.104 /
[Code]....
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Aug 15, 2011
CISCO ASA 5505
Interfaces:
OUTSIDE - 194.50.90.221 255.255.255.0 / security level 0
DMZ - 192.168.12.254 255.255.255.0 / security level 25
INSIDE - 192.168.0.6 255.255.255.0 / security level 50
Now, if I want to ping from the DMZ to INSIDE, I get an error message "no translation group found for icmp src DMZ: ...... dst: INSIDE...."
I fixed is by adding "NAT 0" onto the INSIDE interface so that packets originating from "INSIDE" that are destined for "DMZ" do not get NAT'd.
Now my question is, becasue these are all directly connected networks, how come the firewall does not route the packets, but tries to NAT them instead.
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Apr 27, 2013
I have a doubt on how do nat 2 internal ip addresses to 1 public ip for FTP uses.
As I know Cisco ASA cannot use to nat 2 internal ips to 1 public ip as the ASA cannot read the host header. It there anyway to control it by using acl or network object group?
My current configuration for nat 1 internal ip to 1 public ip:
static (firewall-dmz,firewall-outside) tcp 210.19.xx.xx 21 172.16.101.11 21 netmask 255.255.255.255 dns
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Sep 25, 2012
I have a DVR installed inside my network with local ip address 10.0.0.117/24 and i need to access it from the internet. there is a pix 515e (ios ver. 6.2) between the internet and my internal network. I've configured NAT from inside to outside to allow my internal clients to access the internet. but i need to allow external clients from the internet to access the DVR. I've tried to configure it on my pix but i found it doesn't have more options for nating like ASA.
is there any way to do that on pix and if so what the correct commands to do that.
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Feb 12, 2011
My network is set up in the following way..
DSL-320B | Linksys E3000 192.168.0.0/24 Subnet A Static Route 192.168.1.0 255.255.255.0 192.168.0.100 | Wan Port 192.168.0.100 DIR-655 | DIR-655 192.168.1.0/24 Subnet B
I am unable to browse by IP any machines on Subnet B from Subnet A and suspect this is due to the NAT and the Endpoint filtering within the DIR-655.
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Dec 26, 2011
I have a new customer that I installed an ASA 5505 to replace a Linksys VPN router. They have a main office with a static IP address, 3 branch offices with static IP addresses and 2 branches that are doing DHCP from the ISP for their router address. I have no problem getting the static VPNs up and running. My problem is with the VPN connections that are doing DHCP. I can go in and determine what IP they are currently using and setup a connection and it works fine. The problem is of course when their IP address from the ISP changes, which seems to happen at least daily. What is the proper way to setup a connection that is using DHCP? Also, can you setup multiple connections this way? Currently the 2 locations have different passwords setup in their routers.
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Aug 13, 2012
We have a switch in our IT office, Cisco 2960G. It plugs into the wall and goes to the server room and connects somewhere. This weekend we redid almost the whole server room and now this switch can connect to the rest of the network. The uplink has a link light but can get anything.
I have rebooted the switch, used scanning on our other switches to try and find the MAC of the switch but for the life of me I cant see it. Is there a command I can run from the command line of the switch to see where its pointing?
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Nov 2, 2012
In my organization we have 2 sites. These 2 sites have ASA 5520s, and the l2l between each ASA. The interface that is forming the VPN tunnel is on the ASA, NATed on the router. These ASAs sit behind the router, which are then connected to the ISPs. Recently, we had to change the ISP that we were creating the tunnel on, from Comcast to Sprint on our remote site. I re NATed the interface, and the l2l tunnel came back up after editing the tunnel-group, crypto maps, and reapplying the crypto map to the interface. However, our remote access VPN no longer works on the ASA that we changed the IP on. The other side was never changed, and still works fine. When I tried using debug cry isa and debug cry ip sec on the firewall, nothing shows when we attempt to connect. We are using IPsec over TCP. On the ASDM log, it says: Deny TCP (no connection) from xx.xx.xx.xx/49907 to xx.xx.xx.xx/10000 flags RST on interface WAN.
The VPN worked fine before, could it be an ACL thing? All we changed was the IP so that's what I'm inclined to believe, but on the router none of the interfaces have an ACL that's applied to them. It can't be on the ASA, because I believe we have the option to ignore the ACL enabled, but I might be incorrect about this. I'm new at ASA/VPNs in general.
I would upload the configs, but is there a pertinent output that would work, or just a general sh run?
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Aug 2, 2011
trying to TS a VPN device that is behind an ASA basic set up is IOS VPN<firewall/nat<internet>ASA/nat>IOS VPN
I do not have a lot of insight into the other side of the connection, although the tech on the other side claims all is good. so to the point.
Is the asa capable of allowing this tunnel to work? The configs and debug follow.
1.1.1.1 = my public ip
2.2.2.2 = peer public ip
The asa -
[Code]......
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May 22, 2013
I have Router 2800 series Global nating is configured on it.
ip nat inside source list 111 interface Dialer1 overload
!
access-list 111 deny ip 192.168.1.0 0.0.0.255 192.168.0.0 0.0.0.255
access-list 111 permit ip 192.168.1.0 0.0.0.255 any
My object is that i want give internet access only for few users ip E.g IPs addresses from range 192.168.1.0-10 can acess intenet access other all are deny.How i do this with ACL .
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Jan 13, 2012
I have configured cisco 6509 to do nating and its not working. Static nat is perfectly working fine below is the config.
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Jul 9, 2012
I have a Cisco ASA 5520 (Ver 8.2(4)) with all four interfaces in use (Public, Private, DMZ, Local offices) and an IPS module, so there are no spare interfaces. I have used all of Public IP's on the current interface for various services (these need one to one mapping, so I can't port map mainly due to SSL certificate issues) and I need to add another Public IP range. The secondary option on ASA interfaces does not exist as on routers/switches and I need to use an additional non contiguous IP address range for additional services advertised on the Public interface that are NAT'd to be servers in my DMZ.
I have seen an example of adding a static arp on the Private interface to allow a secondary gateway to be used for outbound traffic, but I need to allow 14 new IP addresses to be NAT'd from the Public to DMZ and possibly also for outbound NAT'ing (from either Private or DMZ to the Public). I have a L2 switch between the ISP router and the firewall, so using VLAN's is not an option unless the ISP can be persuaded (highly unlikey) to add the seondary IP's as a sub interface with tagging. Anyway if this was actioned then we would have a massive outage on our current IP range during the transistion.
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Apr 4, 2012
I'm pondering this new client's topology. He has: (internet) >> router >> switch >> Windows server with a VPN enabled.
Right now I access his network remotely by just RDP directly into the server with a public IP address.Now doesn't this mean that I'm already sailing through his router and switch? Doesn't that mean that all (broadcast, routing, etc) communication hitting this IP is sucking CPU cycles and bandwidth on his router, switch, and server? Wouldn't it be best if he had his VPN endpoint set on his gateway?
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Jul 10, 2011
I would like to know how to configure my DIR-600s firewall UDP Endpoint Filtering. I ve read some guides and I ve got to configure this to Endpoint Independent in order to play League of Legends. The problem is that I can see the option Firewall & DMZ but then I don't see the UDP or TCP Endpoint Filtering options.
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Oct 31, 2011
Cisco 2651xm router
IOS: c2600-ipvoicek9-mz.124-15.T7.bin
Can a 2651XM router be configured as a PPTP VPN endpoint (client)? I ask because I want to connect this router to a professional vpn (privacy) service such as proxpn or mullvad or similar. If it can't, any vpn privacy services that cater for cisco-based vpn connection?
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Apr 16, 2013
We have about 160 users setup using the Anyconnect client connecting to a ASA 5510. We are using split tunneling and also using the Websense endpoint client. Every now and again after installing the endpoint client we are unable to connect the AnyConnect. It asks for credentials waits for a while and then fails with the error "AnyConnect was not able to establish a connection to the specified secure gateway.Please try again later."
If we uninstall the endpoint client it works again and normally after reinstall it fails again ( I know). Eventually it just works and then its fine.
We have logged a call with websense and sent packet traces of working and none working . Then only thing they came back with is if we filtered the non working trace with port 80 you could see a few RST,ACK coming from the ASA to the client so they blamed the Cisco components.
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Nov 16, 2011
I have a Snapgear 560U VPN Gateway at the main office with VPN connections to several branch offices also using Snapgear 560U. Those are no longer manufactured though, so I bought a Cisco WRVS4400N for our new office. The main office has a fixed IP but the branch office ha a dynamic one. On the Snapgear's it is very clear where I need to enter the Mandatory endpoint name on the dynamic side of the tunnel, but I can't find anything on this on the Cisco WRVS4400N. So where do I enter this information so that I can make a VPN connection between the Snapgear & Cisco boxes?
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Apr 2, 2012
With firmware 1.2.0.9 - can the RV110W be used as a VPN endpoint? The VPN capabilities have been expanded in this version - but from the docs this isn't quite clear to me.
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Jun 3, 2012
I have an ASA5510 running version 8.2(5) I am having an issue with routing/natting from an internal network to the outside interface IP on port 443 which has a nat back in to another internal address. i works externally in from a public address. i also see log messages to do with IP Spoofing
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Nov 10, 2012
I purchased the RV180 to replace a dead Linksys BEFVP41 to connect a home office to HQ. The Linksys was configured with three IPSEC tunnels to connect to three different subnets all through the main HQ gateway. Note that each tunnel is independent with its own pre-shared key. I can configure the same tunnels on the RV180, and each one works correctly, but I can only get one to run at a time. I have to disable the other two. Enabling a second tunnel results in the No phase2 handle found error. I could not use the Basic VPN setup as it complains that the remote endpoint is already in use. I had to use the Advanced VPN Setup to create the IKE and IPSEC policies. In a different discussion [URL]
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Apr 30, 2012
I try to connect a Router as an Endpoint (Because I just want to use a SERVICE from it).Well, the issue is this: I have a SW L3 that have too much VLANS, It is routing traffic and it provides internet connection. VLAN 182 has been created at this point and in this SW L3 has configured an interface vlan 182 with an IP 10.0.82.1/28.
To this Switch L3 is connected another switch L2 with an interface vlan 182 with an IP 10.0.82.2/28. Finally I have the last switch with the same features of configuration just that this has an IP 10.0.82.3/28. In this last switch is connected the router in the Gi1/0/24 as Switch port access, this port belongs to VLAN 182. At the router, the port is gi0/0 and it has an IP 10.0.82.4/28 and is UP.
The Switch where the router is connected is reachable from this router but not by the other switches. Router can reach all the network but not in the reverse way.Router has configured an ip default gateway 10.0.82.1.
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