Cisco Firewall :: ASA 5505 / 5520 Dual Gateway From 3750 And 2010
May 17, 2011
I need to move the client machines off of the 3750 (and their DHCP dependency on it) to the SGE2010 and absolutely route their internet traffic out through the outside interface on the 5505. They must also be able to communicate back into the internal environment in order to communicate with the production servers.
The clients currently use .254 addressing through a dumb dell switch to the 3750 but I am trying to migrate them over slowly to the .253. I know that the 2010 will not do DHCP, so I am putting a DHCP server on that switch right now. The 5505 won't let me add an additional nameif statement onto one of the other eth0/x interfaces and I'm not sure if that has anything to do with it's capabilities to act as a DHCP server (it's not an option in the ASDM) or it's ability to serve as the internet gateway for the 2010 clients. (Side notes: The 5505 has a base license and is currently also connecting 1 site to site VPN. As is the 5520, so all of it's interfaces are used as well).
I statically assigned a moved client with a .253 address and plugged it into the 2010. I have tried giving the 2010 both a .4 address and a .253 address but neither will allow me to ping any of the addresses on the 5505. The 2010 shows automatic routes to the two subnets and I set it's default route to 253.1. The link between the 2010 and the 3750 works - clients receive a .254 address from the 3750 and can get out to the internet via the 5505 and reach the production servers as well.
Why won't the 2010 see the 5505 as a gateway and allow clients to get to the internet and also traverse the 3750 when they need access to the production network?
The reason why I dont' just connect the two swtiches and call it a day is because I also need the production servers to ALWAYS go out/receive web requests via the 5520 outbound/outside interface. I'm having such a hard time wrapping my head around why i can't get my clients moved over to the new switch, I haven't even grasped how I'm going to do that yet.
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Apr 4, 2011
i am working on a project with 2 security ASA's 5520 with Microsoft ISA/TMG-2010 Server having 2 DSL's my question is regarding the designing issue where should i connect the 2 DSL's using ISA/TMG-2010..
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Jun 26, 2012
I am trying to port forwarding Exchange 2010 OWA using ASA5505, wherever I used object NAT or Twice NAT it just doesn't work.... here is my config:
access-list outside-access remark "Exchange Server Access Rules"
access-list outside-access extended permit tcp any host <public x.x.x.11> eq smtp
access-list outside-access extended permit tcp any host <public x.x.x.11> eq https
[code]...
note that i use public ip <public x.x.x.9> on the outside interface for PAT, so all hosts in the same private can access internet
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Mar 12, 2011
I have Cisco ASA 5520 . I want to deploy this in the following scenario. Two ISP( for internet) links are connected in the ASA. Three zone ( Outside , DMZ , Inside) specified on the ASA.In DMZ , there are two proxy server ( proxy 1 , proxy 2) . Branch user will use proxy server 1 and Head office will use proxy 2.
In the above scenario management requirements are, Proxy 1 will use ISP 1 and proxy 2 will use ISP 2.If ISP 1 goes down then proxy 1 will use ISP 2 for internet. Please suggest me how I will configure the ASA in the above requirements or if possible send me the configuration.
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May 31, 2013
I would like to knwo if i have dual ISP feature with my ASA 5520 licence? With ASA 5505 i can see Dual ISP feature but with ASA 5520 it's not!
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Aug 3, 2011
We have a 5520 ASA running 8.4(2). We are trying to setup Clientless VPN access to our SharePoint 2010 environment. We have most of it working, however there are a few things that do not function right in SharePoint via the VPN but function fine internally. Are there any special things to configure specific to SharePoint? Some of the things that do not work include the SharePoint ribbon, up level function, opening of documents within SharePoint, etc.
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Dec 14, 2011
I inherited a network redesign project mid implementation and ran across an issue that I was not 100% sure able to be resolved. Implementation is occurring in which the organization is changing over to a different ISP and we have some customers that will not be able to change their settings over to our new addresses from some time. I have seen a lot of posts about fail over and dual ISP configurations, but I could not relate them to this particular scenario.
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Jul 7, 2012
i have asa 5520 configured as VPN Gateway to terminate remote access vpn , i have question , how can i restrict the access to only 1 range of public source IPs to access my corporate via RA ,is this possible?if so how to configure it?
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Oct 9, 2011
We are looking to deploy an ASA 5520, but I need to know if it is possible for it to work in this environment.
We have colo space, with two IP ranges. They provide two network drops, one from each switch connected to different routers. One in which has 4 usable IP's for management purposes. This address range will be used only for remote access to the ASA and VPN into the management VLAN. The management VLAN will have all internal devices such as the switches, etc. The second range is for the servers, of which will be assigned directly to the hosts and the ASA will need to act as just a firewall. I can do this on IOS, but not sure about the ASA.
I need to answer the following questions:
Does the ASA support dual network drops, and would this be a failover port configuration in order for it to work?A management VLAN with outbound internet access only, and VPN/RA capability. NAT will need to be used I'm guessing. Can we have a DMZ VLAN which has defined ports, say 80, 443 and 25 inbound and outbound. I need the hosts to have the public IP assigned to them with no NAT configuration.
I know there are some advantaged to using NAT, but I really can't use it because the applications behind prefer public IP's being assigned to them.
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Oct 9, 2012
My client is transitioning to a new ISP and want to migrate there web servers in stages. therefore they would like to keep some servers running on the old ISP and some servers use the new ISP.
I have set this up in a lab and keep running into routning issues (I am using 5510 for the lab as I do not have a 5505 available). I know that ASA's don't support PBR. Is there any way or trick to get this to work on the ASA?
I have a feeling this is not possible and we would need to get another ASA or a Router to get this to work.
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May 28, 2012
I need to configure my asa as follows: Two active ISP´s, one(ISP1) for outbound traffic (normal internet traffic) and the other one for inbound traffic(ISP2), http to a web server in the inside network. I have two default routes, one pointing to ISP 1 with metric 1 and the other to ISP2 with metric 2. I perform dynamic nat to ISP1 interface with hosts in the inside network and static nat to ISP2 interface with web server.
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Mar 27, 2013
I am attempting to set up failover dual ISP on a 5505 running 8.4(4) with the Sec Plus license. Everything i have been able to reference so far, points to old commands not available or relevant in 8.4
For instance:
global (backup) 1 interface
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
route outside 0.0.0.0 0.0.0.0 20.20.20.1 1
route backup 0.0.0.0 0.0.0.0 30.30.30.1 10
What is the new syntax that should be used to mimic these commands? I have the sla and trach reachability configuration already set up.
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May 7, 2013
I would like to configure a Cisco ASA 5505 with Dual ISP (ISP 1 and ISP2) and two networks (network 1 and network 2). My customer need that clients in the network 1 connect to Internet with ISP1 and clients in the network 2 connect with ISP2. If a failure occurs in ISP1 (just an example) the network 1 clients connect with ISP2.
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Apr 5, 2010
I have an ASA5505 with Security Plus license so I can have many interfaces (not 2 + 1 limited DMZ like in base license)
I have 2 VLANs.Is it possible to use one ISP for VLAN 1 and other for VLAN 2 ? Is it limited to 2 ISP's or can have more ?
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Sep 18, 2012
I have ASA 5505 ver, 8.4(1) I have configured 2 WAN links to
1. Outside1 - distance metric 50
2. Outside2 - distance metric 20
Currentry all traffic is passing thru Outside2 and it's correct, also s2s and ra VPN is also running on Outside2 ?My current case is to use Outside1 for webvpn services only. I can't use Outside2 becouse on 443 port other services are running, also I cant change webvpn port to other.
How can I match packets incoming to interface Internet1 from Interner side nad route them back thru Internet1 interface.
IPSLA is not a good solution becouse I need to have both WAN links used Now in routing table I have only onre record
S* 0.0.0.0 0.0.0.0 [20/0] via x.x.x.x, INTERNET2
for link with lower metric, but after some problems with provider for link Internet2 routing has changed for Internet1 and didn't change it back after resolving problem? how to create it for all traffic incoming for Internet1 interface from outside?
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Dec 5, 2011
We have a cisco ASA 5505 with sec bundle plus
We have two ISP's:
ISP1 (Our IP = 30.100.150.50, gateway 30.100.150.8)
ISP2 (Our IP = dynamic, gateway 20.100.150.9) - ADSL
Our internal LAN IP range is 10.9.8.0/24
We want to configure the ASA 5505 to allow users via ISP2 for http traffic We then want to use ISP1 for strictly VPN and access to internal web resources (eg OWA) as we have public IP's there.
Our idea was to configure two gateways on the ASA (e.g. 10.9.8.5 via ISP2 and 10.9.8.6 via ISP1)
Then give the users gateway 10.9.8.5 for web browsing etc Is this configuration possible on the ASA 5505?
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Feb 27, 2012
I have a 5505 configured with a active/standby dual wan setup using the sla tracked connection settings. Is there a way to configure the ASA to stay on the backup connection after activating? We had a situation where the main T1 was bouncing, so the backup connection was being activated and deactivated very often. The problem is that there is an app being used that does not allow users to reconnect to dropped connections immediately, so every time the asa switches wan connections it causes a significant disruption.I should note that I already set monitor options frequency to 240 seconds. I could set it higher, but then we have a longer delay when the main connection dies.
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Feb 9, 2012
I have a small office with about 20 people. I currently have a T1 line which feeds a Cisco ASA 5505. I would like to replace the T1 line with two (2) ADSL lines. I need a dual WAN switch/load balancer. I researched a bit and found that Cisco RV042 will probably work for me even though I don't need another VPN and would have to disable it.
My question: Is there anothe device from Cisco or others which will give me the dual WAN and load balancing but not the VPN piece. My assumption is that it would be a less expensive device if such an animal exists.
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Feb 27, 2013
I'd like to see some REAL LIFE comparisons of ASA firewall throughput (a bit like this one for ISR G2 Routers - [URL].
The reason I ask is that I recently upgraded a firewall from an ASA5505 to an ASA5520 on a small network where the only outside connectivity was a single 10meg Internet circuit with an IPSEC VPN (not landed on the firewall but on a router) to another site.
When I swapped out the firewall the users noticed a big improvement. The firewall is not doing anything out of the ordinary - no IPS or VPN, just standard state full inspection.
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Jul 31, 2012
I have an ASA 5505 current f/w & the security plus license (to get the 3 nameif interfaces). Can I split traffic between two ISPs, (VPN traffic to one destination on a T-1 on one VLAN, and all other traffic using DSL to another VLAN) and using a different nat policy on both? I know load balacing isn't supported, only failover. I was just wondering if there was a way to make this work.
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Mar 20, 2011
One of my remote sites acquires Internet connectivity via a cable modem service. This goes down intermittently, of course. I would like to purchase DSL service from the local telco and configure the edge ASA (currently a 5505) to use the cable modem path normally ... and fall back to the DSL path if necessary.
These seems hard to do. The edge box would need to evaluate the viability of a WAN path using some set of tests ... perhaps pings to a handful of major Internet sites. If all those pings start failing, it would stall for a minute, to give the WAN service provider time to recover ... then cut over to the second path. Cutting to the second path might mean pushing new DNS server addresses to clients (or perhaps the edge box would hand out both sets of DNS servers all the time and rely on the clients to try them all.) Once the cable modem provider restored service, the edge box would stall for a while (ten minutes? an hour?) and then cut back.
I'm willing to replace the edge box with something fancier (a bigger ASA or something sold as a router or whatever), although I'd like to stay under 10K (list) for such a replacement.
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May 22, 2012
how can I setup that the backup connection will start but after 30s of icmp timeout the default gateway (tracket object - 192.168.1.1)
My configuration:
sla monitor 123
type echo protocol ipIcmpEcho 192.168.1.1 interface outside
num-packets 3
frequency 10
sla monitor schedule 123 life forever start-time now
route outside 0.0.0.0 0.0.0.0 192.168.1.1 1 track 1
route backup 0.0.0.0 0.0.0.0 192.168.2.1 254
track 1 rtr 123 reachability
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Feb 27, 2012
A customer got a new VoIP PBX, and now I have to forward port 443 on the ASA to the PBX for remote administration purposes. The LAN-interface of the PBX is in the same subnet as the ASA but has an external VoIP-router as default gateway and not our ASA. Is it even possible to forward the port to the PBX when there is no route of any sort to our ASA on it?
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Jun 23, 2011
I have an ASA-5510 in a location that loses connectivity to the wan gateway after anywhere from five to fifteen minutes. At first I thought that the unit might be defective, but I replaced it with an ASA-5505 with similar results. A reload of the ASA-5510 will restore connectivity for the next quarter hour.
Here's the version information on the 5510:
Cisco Adaptive Security Appliance Software Version 8.2(1)
Device Manager Version 6.2(1)
Compiled on Tue 05-May-09 22:45 by builders
[Code].....
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Jun 28, 2011
ASA 8.3(2) 5505
I've configured a number of remote access vpns on ASAs, but I don't recall having a default gateway setting assigned after logging in.
Is there a way to disable the assignment of a default gateway upon login?
The value assigned is meaningless. It's just the next available address in the local pool.
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Aug 25, 2011
Cisco ASA 5505 Security Plus 1 link with PPOE dialup for internet access
desirable situation: Primary link with a PPOE dialup Secondary Link with DHCP address Asignment
Problem: i want to configure Dual ISP Failover modus, but the problem exist when i configure the ip sla syntax it looks good in the running config. but after a reload the secondary line becomes primary
It looks like the ppoe client authentication is busy when the ip sla tracking mechanism becomes active. can i tweak the settings that the ip sla tracking mechanism starts later?
What i the correct config for Dual ISP setup with primary PPOE and secondary DHCP
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May 26, 2013
Site A:
ASA5520
VLAN data subnet 172.16.10.x/24
VLAN Voice subnet 10.0.0.x/24
Site B:
ASA5505 Base license
VLAN data subnet 192.168.10.x/24
VLAN Voice (restr) subnet 10.0.1.0/24
The callmanager is located on site A and needs to sent out DHCP-offers to site B through the VPN so the IP-phones can register to the callmanager. I got the VPN up and running for the data-subnet but i can't get traffic through the voice-subnet/VLAN.
Can the ASA's do the job or do I need to route traffic before the ASA's on both sides and sent it through the tunnel, configured both subnets as interesting traffic? Ofcourse the last situation I need to upgrade the license for the 5505 to gain more VLAN's.
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Feb 12, 2013
is it possible to configure a webfiltering on ASA 5505,5510,5520 ? So if its possible can you provide us a configuartion template.
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Feb 26, 2013
We have the following setup on our Cisco ASA version 8.6.1 One to one NAT rule from outside to our Exchange 2010 cluster IP address (DAG group). This is working fine for clients on the internet accessing their emails via Exchange using their phones. The ASA has the MAC address of the active node from the cluster but when the cluster failover it cache the IP address and are not updating the new MAC when the cluster failover. So users from the outside are unable to connect to the new node from outside the ASA as the MAC address from the passive node is in the MAC table. The MAC address on all the switches update within 2 seconds on the internal network and users don't notice any outage.
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Apr 13, 2011
We have got site to site VPN configured between local site with PIX515 6.3(5) and remote site with ASA 5505 7.2(4) . Because of very unreliable internet connection in remote site , we have added new ISP link which we want to use as redundant link .i understand ASA 5505 can be configured with two ISP link with SLA monitor method for redundancy as per this document ,[URL]
my question is how do i set up this pix 515 to have redundant VPN tunnel with remote site (when primiary ISP link fails in remote site and secondary ISP links takes over ) . I was thinking of using PIX 515 with 2 peers in same crypto map used for that sepcific site to site vpn tunnel,not sure that is the right way or not though.But how would i configure ASA 5505 to use backup interface(where secondar isp router conects ) to particitae in Site to site Tunnel .
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Dec 30, 2012
I configured dual ISP on ASA 5520 following cisco doc below. Now I would like to configure SSL VPN to work with this for failover? I tried to find an article regarding this but I could not. [URL]
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Jul 10, 2011
We got 2 ISPs -------> two ASA 5520 Primary / secondary --------> LAN . ASA is configured with ACL and Static NAT for our mail , web & ftp servers .
My question is how to configure the 2nd ISP on the ASA to auto switch to the 2nd ISP when the 1st is down with a backup static NAT and backup ACL for the new ISP , in other words how to configure a active static NAT and Backup Static NAT and ACL only for Exchange/Mail Server.Here is the example of our configuration where PIE is Primary ISP & EMC is Backup ISP.
ASA Version 8.2(1)
hostname Corp-ASA
enable password 2KFQnbNIdI.2KYOU encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
[code]....
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Aug 3, 2010
I have a client that is requesting redundant internet connections using 2 7204 routers to 2 asa 5520 in an active standby configuration. There is no load balancing requirement this is strictly for failover. The issue that I am having is that I have to have 1 of there public IP addresses on the Lan side of the 7204 for the ASA connectivity. Because of this both routers advertise out their public subnet to the respective providers, but the issue is that when the wan link on the primary router fails and traffic traverses the secondary wan the return traffic comes back in the secondary wan and stops because it sees the link to the asa as being up even though the asa is in standby. No matter what route manipulations I do a directly connected route is alway going to be better. How I can get this to work. Below is a rough sketch:
Verizon------Router A (Primary)-----ASA A (Active)--------------Nexus1
| | |
| IBGP | Keepalive | VPC Link
| | |
AT&T---------Router B (Backup)-----ASA B (Standby)------------Nexus2
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