Cisco Firewall :: How To NAT To Multiple Interfaces In 8.3
Jan 15, 2013
Having upgraded to 8.3 from 8.2 I and read much about the differences , it seems that 8.3 deals with NAT in a much more managed method.However I am confused on how one would NAT a network object to multiple interfaces? i.e I know you can specficy a NAT adddress within the network object howeveer this only allows you to specific a single IP address.What if I want to talk accross multiple interfaces how would I specify this?
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Jun 16, 2011
We have an ASA 5510 firewall. There are 4 ports on it configured as 2 outside, one inside, and one DMZ. We have two cable modems attached to the outside ports. Our plan is to have the "inside" port directed to one outside port/cable modem, and the DMZ port directed to the other outside port/cable modem.
We have been able to get the "inside-to-outside" setup to work but not the "DMZ-to-outside" setup (at least at the same time).First off, is this possible? If so, what are we likely missing - some way to have a second default route for the DMZ?(My manager is the "Cisco person" here, not me, so I may not have enough info.
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Sep 23, 2011
I have an ASA 5505 running 8.2(1), that is configured with three interfaces as follows:
Inside (security 100) 10.0.0.0 /24
Inside 2 (security 100) 192.168.0.0 /24
Outside (security 0) internet
Inside is connected to my internal network, inside 2 is connected to the network of a sister organization, outside is outside.
I'd like to be able to route between from inside to inside 2, and have NAT translate me to inside2's address.
I have inter-interface traffic configured, and when I use a NAT exemption, I can route fine. But the resources on network 2 must see my request as coming from the inside2 interface IP.
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Feb 12, 2013
This is for an ASA 5505 with the base license...I have a situation where I will not have one interface in my outside VLAN, but instead I want to have interfaces 1-7 in my outside VLAN and interface0/0 in my inside VLAN.
Is this supported with the Base license, and if so how would I do this? Do I still just need to assign one IP address to the outside VLAN?
Or will I need to upgrade to the Security Plus license and put each interface in a separate outside VLAN, so in essence I would have 7 outside VLANs each with the same security level (0)?
My situation is that I have several partner networks that i want to "aggregate" thru my one ASA 5505. So each outside interface represents a separate partner (outside) network, each of which I want to get to from my inside network. Hence the many outside to one inside.
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Oct 10, 2011
I've been trying to figure this one out for quite a while. I currently have 2 inside interfaces (data, phone) and I am moving to 3 inside interfaces (servers, workstations, phones). I have not been able to get any traffic between the interfaces. With the current setup it was not a major problem. With the new setup it will be a major problem.
Below is a sanitized version of the config.
ASA Version 8.2(1)
!
hostname BOB
[Code].....
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May 13, 2013
I am trying to build a new network from scratch, I have the WLC 5508 w/ Aironet 3600e APs connected to my Netgear Smart Switches and a Linksys RV082 router that I'm using as my DHCP server with several VLANs for several stuff on my Switches.
I have 2 questions:
1. Can I have 5 Interfaces configured on 5 different VLANs, each SSID on each a different Port:
Port 1: Controller management only=> 192.168.x.x /24
Port 2: SSID 1: WiFi Internal=> 172.16.x.x/12 (Radius Auth with no sharing)
Port 3: SSID 2: WiFi Internal w/ sharing=> 192.168.x.x/24 (Radius Auth with sharing)
Port 4 :SSID 3: WiFi Guest=> 10.0.x.x/8 (Web Auth)
Port 5: SSID 4: WiFi IT=> 192.168.x.x/24 ( Radius or certificate Auth with access to the controller management interface)
2. How can I use the Controller as the DHCP server for all the WiFi traffic, and how should that be configured to work with my other DHCP server?
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Mar 7, 2013
I have an ASA connected to 2 ISPs.I am using object tracking for the default route so only 1 path is used at a time. I have a L2L VPN setup going out interface A. I would like to configure a 2nd VPN going out interface B with identical parameters.
(ASA software 8.2)
crypto map PATH_A 1 match address outside_1_cryptomap
crypto map PATH_A 1 set peer 10.1.1.1
crypto map PATH_A 1 set transform-set ESP-AES-128-SHA
crypto map PATH_A 1 set security-association lifetime seconds 28800
crypto map PATH_A 1 set security-association lifetime kilobytes 4608000
crypto map PATH_A 1 set reverse-route
[code]....
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Apr 1, 2013
If I have a PI 1.2 system that has multiple interfaces configured I can upgrade to PI 1.3 and both interfaces remain and I can see both under the admin webpage under appliance interfaces. But if I do a fresh install of PI 1.3 I can only configure one interface. The commands fail from the cli to configure anything but gigabitethernet 0. Are multiple interfaces not supported in PI?
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Aug 20, 2012
I am trying to enable a second WAN interface on our ASA.the end goal is to move all internet traffic to the new connection, but first i want to test it working.I have setup my computer as an object in the ASDM and the interface is configured correctly (same settings on a different router and that was working)I setup a route with a lower metric ( 1 lower than the default route which routes everything through current main internet interface) to route traffic from my computer out through the new interface but i am still connected on the old interface.I duplicated some of th NAT rules (but i would have thought if these werent working then i would have no internet connection anyway)
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Feb 24, 2011
I am trying not to run before i can walk,.. so first thing I'm trying to do is ping out to a DNS server in the internet: 212.135.1.36 from my internal network.
- If I put a default gateway on my router, and set to 172.16.32.254 (Firewall Vlan100 interface) and ping,.. it works fine from my router.
- If put a default gateway on my switch below the router as 172.16.32.252 (VLAN100 interface of the router) and ping from the switch it doesnt work.
I assume its getting to the switch as I can ping the 172.16.32.252 from the switch so the router is dropping the packets... my question is why!?
Once this bit works,.. the intention is to route any external bound traffic that comes from VLAN100 to 172.16.32.254, external bound traffice from VLAN200 to 172.16.64.254 etc etc
[Code] .....
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May 12, 2013
I have c3725 router that have two WAN interfaces, both of which I want to serve VPN clients. However, I have only one default route, say for WAN1, so how can I accept client requests on WAN2.
ps: I use vpdn and pptp, and I'm a newbie to Cisco router and IOS.
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Apr 2, 2012
we use LMS 3.2 in our network. We have a couple of 6509-V-E Switches with mutiple interfaces (VLAN interfaces and Layer 3 interfaces) The problem is, campus manager discovers the switch by a interface randomly...one time its a lay3 Interface and another one its a vlan interface which none of them are in DNS hence no name resolution can be made.
Is there a way to "tell" CM to us for instance the VLAN Management IP of the switch?
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Jan 24, 2011
I have 2 routers ( Cisco 3845's) both running identical IOS's. Each router has identical 5 networks on it with one network each being different.I have HSRP set up on the identical 5 networks.Your standard Fail over senario.ON one of the routers one network is not seeing the other router in the same network, Will not Ping or traceroute.And HSRP stopped working ( both were thinking they were active. which of course brought the network to a halt. Non of the interfaces has any ACL on them, They are plugged into a Brand new Cisco 3560v2 switch. I have switches out the cables to eliminate that as an issues.
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Jan 3, 2012
I have a 5508-WLC appliance and configured multiple ap-manager interfaces to balance the join request from LAPs and the load.I went to console port from some LAPs and saw that there was that balance among multiple ap manager interfaces (Dynamic AP Management Interfaces). Then we torn down one of the ap manager interfaces and confirmed that the LAPs were moved to next ap manager interface automatically.But the question here is, how can I verify which ap-manager interface was used for a LAP from the WLC via GUI or CLI ?? or how can I see the amount of APs joined using that ap manager interface from WLC ?
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Apr 10, 2013
I am trying to lab something up and I believe I am doing something incorrectly. My management VLAN works fine, the AP on port 7 finds the controller fine, but my VLAN 80 doesn't seem to be mapped to port 2. I mapped a test WLAN to the VLAN, and setup a DHCP scope, and a client can get on the WLAN, acquire an IP address, etc. I thought I coudl then map that VLAN (80) to port 2 and have it go out a cable modem. Doesn't seem to be working that way, however.
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Nov 21, 2012
I have a virtualization server with 4 network interfaces and connected it to a SAN. There are few virtual machines which writes data to the SAN.
I want to connect to the SAN with multiple interfaces to speed up the network.
Is it possible to send data on multiple interfaces? How can I configure it?
Computers are connected to san through switch.
SAN: Equallogic PS 4100 E
Switch: Dell Power Connect
Computer: Dell T610
OS: Centos 5
Virtualization: Kvm
NIC: 8
I am not sure about network card brand now.
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Jan 14, 2012
I am having big problems trying to get what should be a rather simple configuration to work.I have a Cisco 2901 Router and have setup Zone Based Firewall on this.Traffic from the 192.168.223.x network does not pass through to the 192.168.1.x network.my traffic appears to disappear down the big bucket...Interesting I can ping machine on 192.168.223.0/24 network from the 192.168.1.0/24,So the static routes setup on the router on the 192.168.1.0/24 appear to be routing ok.
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Mar 20, 2012
I've got a question concerning the configuration of multiple AP manager interfaces on -for example- a cisco WLC 2504. I've read the configuration guide but I'm not sure whether this is the way the protocol works. Say I want to distribute AP's (and traffic) across various AP Manager interfaces on the WLC. I would configure the following:
Create one management interface (which will automatically also be an AP-Manager interface)Configure 1 (or more) Seperate ap-manager interfaces, assign them to a port number, and select "Enable dynamic AP Management". VLAN ID's will be the same.Create a WLAN and configure it's interface to "management" Is it correct if I state that the LWAPP protocol takes care of the discovery from the Access Point and sends information about the available AP-manager interfaces back to the AP and the AP knows which ap-manager interfaces are available, connecting to the least loaded one?
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Oct 18, 2012
Due to special circumstances we have 2 ISP links on an ASA5510. I am trying to terminate some L2L VPN tunnels on one link and others on the second ISP Link, eg below:
LOCAL FIREWALL
crypto map outside-map_isp1 20 match address VPN_ACL_Acrypto map outside-map_isp1 20 set peer 1.1.1.1crypto map outside-map_isp1 20 set transform-set TS-Generic
crypto map outside-map_isp2 30 match address VPN_ACL_Bcrypto map outside-map_isp2 30 set peer 3.3.3.3crypto map outside-map_isp2 30 set transform-set TS-Generic
crypto map outside-map-isp1 interface ISP_1crypto map outside-map-isp2 interface ISP_2
crypto isakmp enable ISP_1crypto isakmp enable ISP_2
route ISP_1 0.0.0.0 0.0.0.0 1.1.1.254route ISP_2 3.3.3.3 255.255.255.255 2.2.2.254
Establising the VPN tunnels in either direction when using ISP_1 works fine establishing in either direction from remote access users and multiple L2L tunnels (only showing one for example).
On ISP_2
1. Peer 3.3.3.3 device establishes a VPN tunnel, but the return traffic does NOT get back to devices on 3.3.3.3 tunnel.
2. The local firewall does NOT establish a VPN tunnel going to 3.3.3.3
It would seem to indicate that the problems lies with this multihomed firewall not directing the traffic correctly to either return down and establised VPN tunnel (point1) or to intiate a tunnel if none exists (point 2).
Reconfiguring the VPN tunnel peer for 3.3.3.3 to be on ISP_1 of the local firewall, all springs into life! There are sufficient license etc...
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Jun 26, 2012
The PC I'm using right now was built almost six years ago (ASUS A8N-SLI Premium), but it has dual Gbit NICs. My home file server was built four years ago using an entry level server board (Tyan S5211G2NR) and it also has two Gbit NICs.
I never quite understood how to take advantage of the multiple network interfaces. Can it be done through a standard unmanaged Gbit switch?
I'm building a new desktop, probably using the ASUS P8Z77-V mobo, which has just one NIC.
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Sep 17, 2011
I am wondering if xconnect L2TPV3 feature could be done on multiple SVI interfaces on 871 router and 2911 router with built in 8 port switch?Like I need to extend two ethernet interfaces and can I use two SVIs on router built-in switch module on each side?
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Feb 24, 2013
i have a question about multiple TACACS Groups. I want to archive the following:
A Cisco 888 is managed by me and a Provider Support Team. Since we both want to access our own TACACS Server, i want to create two TACACS Groups. Is it possible to me, to bind a Tacacs Group to one Interface, and the second TACACS Group to another ? Means that our stuff is connecting to the LAN Interface FastEthernet0 that is applied to the SVI in V LAN 1.
The service technicians from the Provider are connecting to the external Interface or through a possible Lo. (another IP). I do not want to mix our 2 TACACS+ Server and theirs together in one Group. So have anybody tried this before ?
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Mar 31, 2013
I have 2821 router at headquarters with 3 DSL WICs and Static IP's. There are 14 remote sites. All sites are equipped with 876 ADSL Routers and Static IP. I also have an application server at headquarters. Is it possible to split my VPN's in two groups each containing seven sites, one for the first DSL line and the second for the second DSL line. I am planning to use the third DSL line for internet surfing.
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Aug 3, 2009
In ASA 8.0,I have following queries related to redundant interfaces
a)While configuring redundant interface can the redundant interface again be divided into logical interface like red1.1 , red1.2 ?
b)Is Redundant interface supported in the Multiple context mode
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Sep 7, 2011
i have an ASA 5520 running ver 8.4(1). have attached my interface config below and need to do the following, NAT traffic coming on GigabitEthernet0/2.101 to GigabitEthernet0/1, i.e. packets with destination 10.21.110.25 will be forwarded to 10.11.21.25, will a nat (Production,Advocate_MPLS) static ... statement work ?
------------------------------------------------------------------------
interface GigabitEthernet0/1
description Production
nameif Production
security-level 100(code)
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May 17, 2012
I have put 2 physicl interfaces (te0/8 & 9) on the ASA-5585 into a PO and am assigning ips/vlans to the sub-interfaces. I have 2 issues: - Why am I not able to ping the other sub-interface from the ASA itself? (I can ping the 1st one), Secondly, why the IPs are not visible in "sh int ip brief" ?Although I can see them in "sh ip" ..
/actNoFailover(config-if)# int po17.100
/actNoFailover(config-subif)# vlan 100
/actNoFailover(config-subif)# ip add
[Code]....
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Apr 10, 2011
Do i need to create 2 objects for nating a server to 2 different interfaces?That is an inside server published in two different dmzsAutomatic migration to 8.3 creates 2 objects (one for each nat)Can I do the same with only one object? like this or I need an object for each nat?
object network server
host 192.168.128.10
nat (inside,dmz) static 172.24.1.10
nat (inside,dmzguests) static 10.10.0.10
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Jun 20, 2012
Can ASA sub-interfaces run separate IP Sec VPN tunnels eg
There are 02 sub-interfaces of 01 physical interface of Cisco ASA5510 [ASA Version 8.2(5)] and I need to run 01 IP Sec VPN tunnel on each of these
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May 12, 2011
I have a pair of brand new 5520s I am in the middle of commission. After carving out all the DMZs etc I needed I realized that I really neede another physical NIC, not just another VLAN off a configured nic. [code]I am running 8.3(2). How can I turn these "Not used" interfaces into useable ones?
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Mar 12, 2011
I configured ASA 5510 ...
Totally it had 5 ports..
How to provide communication between two different interfaces which had configured as same security level?
How many trunks will support ASA 5510 with base-license?
How to configure trunk to an interface with different VLNs( Router on a stick).
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Jun 14, 2012
I have a problem on allowing ssh traffic between 2 different INTERNAL interfaces. Both the interfaces have the same security level (100).What I have to do is to allow a ssh command from 172.16.0.2 to 172.17.1.200. The firewall is configured but I am experiencing issues on the NAT.The error I get is as follows:#%ASA-5-305013: Asymmetric NAT rules matched for forward and reverse
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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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Jul 10, 2012
We have an ASA 5520 which is in multiple context mode. We are trying to pass traffic from the outside interface to the dmz interface. We have a /27 public ip range. We need a small amount of those addresses to be in the DMZ for SIP servers specifically. The rest of the addresses are NAT'd to the inside interface.So i created the outside interface GigabitEthernet0/0 with 1.2.3.192/28 Inside Interface GigabitEthernet0/2 with 192.168.20.0/24 DMZ interface on GigabitEthernet0/2.1 with 1.2.3.208/29 So all i want to do is route traffic that comes in the outside interface and out to the DMZ interface for the 1.2.3.208/29 subnet. I set the gateway address as 1.2.3.214 which is the DMZ interface address on the ASA.
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