Cisco Firewall :: Implement Secondary ISP To ASA 5510?

Aug 27, 2012

We are in the process of implementing secondary ISP to our ASA firewall and We would like to run both ISPs in parallel so we can test until we finally cutover?

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Cisco Firewall :: Integrating Secondary Failover Unit ASA 5510?

Nov 20, 2011

I have a single production 5510 with 2 contexts.  Now I want to integrate the secondary failover unit. My question is: How much configuration needs to be done on the secondary firewall?  How much of the configuration will be sync'd from the primary to the secondary when the secondary is connected?
For example, do I need to add the following on the secondary or will it be sync'd from the primary?
admin-context NAME
context NAME
allocate-interface Ethernet0/0.14


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Cisco Switching/Routing :: Implement ASA 5510 / 5505 For Existing IP Block

Jun 5, 2012

some recommendations for product selection and overall infrastructure setup for our datacenter:  We have an old, legacy setup, and are looking to replace equipment, improve performance, enhance security, and implement hardware redundancy (if cost effective).
1)  We now have (2) IP blocks from our provider, and need to support both (because we have mailers on older IPs with a good reputation rating).
2)  We have (2) aged Sonicwalls, one for each IP block, each connects to multiple internal subnets (some internal subnets need connectivity to eachother, some don't).
3)  We have (mostly) public facing web servers (Linux/Apache), as well as database servers (with no external access).

1)  Should we implement a Cisco ASA 5520 w/ or w/o SSM modules for the new IP block (for webservers)?
1a)  Should we implement a Cisco ASA 5510 or 5505 for the existing IP block (for mailers)?
1b)  Or, can we have multiple public IP blocks connected to a single ASA 5520 (or 2 ASA's w/ failover)?
2)  Can we connect both firewalls (5520 and 5510/5505) to a single Catalyst 3550 (or similar) using VLANs, and have 6 - 10 VLANs for webserver subnets, with ACLs controlling which subnets/servers can connect to eachother?
2a)  Should we implement a second Catalyst 3550 (or similar) for redundancy (webservers have multiple network cards).
3)  From our provider, we only have (1) dmark which both IP blocks connect through.  Currently we have a switch connected to the dmark in order to 'splice' the connection, and have both existing firewalls connected.  Is there a better approach to this?
4)  We would like to implement SSL-VPN, and possibly site to site IPSec VPN, but only if there will not be significant performance degredation.
5)  Other thoughts/recommendations for new features, enhanced security, or redundancy?

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Cisco VPN :: 5510 Unable To Access Secondary Subnet From VPN Client

Jun 5, 2012

I have an ASA 5510 running v8.4(3)9 and have setup a remote user VPN using the Cisco VPN client v5.0.07.0410 which is working appart from the fact that I cannot access resources on a secondary subnet.The setup is as follows:

-ASA inside interface on
-VPN clients on 192.168.254.x
I can access reources on the 192.168.10 subnet but not any other subnets internally, I need to specifically allow access to the 192.168.20 subnet,[code]

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Cisco Firewall :: ASA5510 Secondary Firewall Crashes After Upgrade To 8.4.1

Jun 29, 2011

I have two ASA5510's set up in failover, and the secondary keeps crashing after doing the interface checks when bringing failover up. This only happens if I try to upgrade the image on the secondary to anything newer than 8.4.1 (I've tried with 8.4.1-11 and 8.4.2). The primary one run just fine with new images.
I don't have the exact error right now, as I need to do a screen capture from console. It's just a huge crash dump.Are there anything I might have missed during the upgrade? Should I cold-boot both the firewalls in the correct order?

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Cisco Firewall :: ASR1002 - Implement ZBF On Router?

Jun 3, 2012

We are trying to implement the ZBF on our router to assist us in limiting the intial impact of DDOS attacks.We have configured the below and it appears that it's not working, as when un der attack the statistics don't increae.


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Cisco Firewall :: Secondary ASA 5550 Firewall Getting Down Automatically?

Apr 17, 2011

I am having two ASA 5550 firewall running in active/standby mode. With in last two months our secondary firewall got down automatically 3 times. Firewall is running with IOS version 7.1.2. how to proceed further troubleshooting because there are not any logs on firewall.

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Cisco Firewall :: 2800 / Implement Backup Between Two Sites

Sep 13, 2011

I need to implement the backup between two sites I have router 2800 which is having a point to point connectivity with the far end.At the far end there is no router ,only one firewall is there on that firewall one access-list is there to allow the traffic .To implement the back up link i have created a site to site vpn  .But the problem is as soon as the tunnel is establised .For the time being i have removed by site to site config from both firewall.

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Cisco Firewall :: Can ASA 5505 In Router Mode Implement MAC ACL

Oct 21, 2012

My client is asking can the Cisco ASA 5505 implement MAC ACL in Cisco ASA 5505 which is now running in Router Mode.I have tried to search the document and also tried the ASDM in the Cisco ASA 5505 but could not see any way to do the ACL by MAC address.At the same time how to find out that by using command line the ASA 5505 able to run MAC ACL in router mode?

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Cisco Firewall :: Implement A NAT Configuration After Having Upgraded ASA5510

Aug 17, 2011

I'm having a cow of a time trying to implement a NAT configuration after having upgraded our ASA5510 recently from IOS 8.2 to 8.4. The upgrade went fine, however we now have a need to add a new NAT rule and I'm not sure whether it's possible.
The upgraded NAT rule and access list works fine at allowing external access to a web server.
However we now need to NAT the SOURCE address (either to a pool or single address) of incoming http requests before forwarding the request to the server. Hence the server will see all requests as originating from a pool with a route heading back to the ASA. The basic issue is that the severs default gateway does not return to the ASA, so "tagging" the source address of external requests to an address or interface associated with the ASA should allow the server to return the traffic to the ASA. I know we shouldn't be doing it this way but we can't see any alternative.
Having read a huge amount of examples we can access the server with the above config (or Object NAT), and we can NAT incoming traffic,however we can't combine the two by having all external http requests Source Natted before forwarding to the server.

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Cisco :: 2900 - Implement Zone-Based Firewall?

Dec 25, 2012

I am looking to implement Zone-Based Firewall on some 2900 series routers (2911 and 2921.)  Based on some research I've done it looks like the cisco2911-sec/k9 and cisco2921-sec/k9 bundles should be all I need.  Is this correct, or is there some other licensing component that needs to be enabled for me to implement Zone-Based Firewall?

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Cisco Firewall :: Asa5510 - How To Add Secondary Firewall

May 4, 2012

I have a cisco asa 5510 with security plus license in Live enviroment . I need to add a secondary firewall . I was planning to do in active /standby mode for failover .But i have a doubt , when i do "show version " on live asa output says Active /active failover , does this means that i can only configure failover in active/active mode not in active/standby (which i want to do )?

Maximum Physical Interfaces  : 8
VLANs                        : 20, DMZ Unrestricted
Inside Hosts                 : Unlimited
Failover                   : Active/Active
VPN-DES                      : Enabled
VPN-3DES-AES                 : Enabled
VPN Peers                    : 25
WebVPN Peers                 : 2
Dual ISPs                    : Enabled
VLAN Trunk Ports             : 8
AnyConnect for Mobile        : Disabled
AnyConnect for Linksys phone : Disabled
Advanced Endpoint Assessment : Disabled
UC Proxy Sessions            : 2

This platform has an ASA 5505 Security Plus license...

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Cisco Firewall :: ASA 5520 - How To Implement NAT On Multiple Internal VLANs (DMZ)

Apr 4, 2011

I've got a cisco asa 5520 and setting up the NAT for multiple DMZs on it. 

 I want to use PAT on the outside interface.
internally ive created subinterfaces for the VLANs and connected to a trunk port on a switch.
configure NAT for this scenario. I've got only 1 external public IP address.

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Cisco Firewall :: Secondary IP Address In ASA5510

Feb 7, 2013

Just want to know if there is a way to configure secondary IP address on the outside/public interface of ASA/PIX.One of our clients have used most of their IP on the subnet given by their ISP. They use those IP's for staticallymapping to Servers inside their local LAN. Thus, they requested another block/subnet from their ISP. They will also use this for static mapping/port forwarding to other servers in their network. The current UTM they are using is allowing this but they would like to use ASA/PIX as their main Firewall. Is this even possible or is there a workaround for this kind of scenario?

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Cisco Firewall :: Secondary IP Over 5505 Fastethernet

Jun 13, 2012

I would like to know if is possible to configure a secondary IP address in a 5505 interface ??

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Cisco Firewall :: Assign Secondary ISP-2 Pool IP To DMZ Server?

May 15, 2011

Can we assign Secondary ISP-2 Pool IP to DMZ Server, network design attached for reference.

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Cisco Firewall :: ASA 5520s Secondary FW Sub-Interface Failure

Mar 3, 2013

I have two ASA 5520s in Active/Standby. I try and test this quartely to ensure it is working correctly. Everything works fine, except I have an issue with one interface. When doing a show failover, it shows the interface as failed on the secondary unit, and I am not sure why. It shows it as normal on the primary.
This host: Primary - Active
Active time: 9277305 (sec)
slot 0: ASA5520 hw/sw rev (2.0/8.2(4)) status (Up Sys)
 Interface WaterworksCanopy (192.x.x.x): Normal


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Cisco Firewall :: 5505s - Secondary ASA Active And Primary Is On Standby

Dec 5, 2011

We have 2 ASA 5505s in a data center at a remote site.
Whilst troubleshooting another issue I noticed the below. I don't know much about fail over but this would suggest that the secondary ASA is active and the primary ASA is on standby.
if the primary is "active" then how come the secondary is the active ASA? I would have thought that once the primary ASA became active this would assume the "main" role".

[Code] .....

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Cisco Firewall :: Configure Secondary IP On Inside Interface Of ASA 5520?

Nov 24, 2012

We already have a subnet defined to inside interface and is in produciton. the default gateway is this interface ip. In that setup now I have to add one more subnet and as the first subnet is been defined in ASA indside interface, I have to assign secondary Ip to the inside interface so that new subnet users can easily reach here and go outside.

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Cisco Firewall :: ASA 5505 Cannot Ping Secondary Internal Network?

Jan 15, 2012

Cisco ASA 5505 Cannot Ping Secondary Internal Network.

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Cisco Firewall :: ASA5505 Alias Secondary Subnet / No Communication Between Them?

Aug 17, 2011

As this is an ASA 5505, unlimited users, I must use arp alias to allow a secondary network.
Inside network: inside network:
Clients in both networks can reach internet, but they can't communicate with eachother. Hosts on the additional network can ping the ASA inside network IP, but nothing else. I get incomming hitcount for inside interface when 10.200.12.x tries to ping 10.200.31.x. In the error log, I see: [code]

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Cisco Firewall :: Can ASA 5555 Translate To Secondary IP Address Block

Oct 14, 2012

I just purchased an ASA 5555 and started to configure.  I was successful in natting all the IPs that are on the same subnet as the ASA eth0.  I could not get the nat working for the 2nd address block.
interface GigabitEthernet0/0
nameif outside
security-level 0
ip address

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Cisco Firewall :: Secondary ASA5525 Interface Flap When Write Standby

May 23, 2013

i never see this before, but on newly purchased just configured firewall.when i do wrtie standby.All interfaces on standby unit it some IOS bug? my firewalls are [code] what could be the reason? FYI i am using LAN base failover and not doing any statful fail-over.

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Cisco Firewall :: ASA 5520 - Stand Up Secondary DMVPN Hub At Recovery Site?

Nov 8, 2012

I have a working DMVPN solution. I am trying to stand up a secondary DMVPN hub at our disaster recovery site. We are trying to deply to a Dual HUB SIngle DMVPN solution. The HUB2 DMVPN router has an INSIDE trusted interface and has an OUTSIDE UNTRUSTED interface.

The inside is 10.248.11.X...the Untrust/public is which is connected to our DMZ 3 on the ASA 5520.....then I am trying to NAT the to an outside public IP 199.248.30.X....just not working...have had 2 tickets open with Cisco this week and they still are unable to resolve. I am sure it is the ASA5520 is not configured correctly.

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Cisco Firewall :: 5520 - Procedure To Replace Failed Secondary ASA Unit

Apr 10, 2012

i just received a RMA for failed ASA 5520 that was acting as secondary unit in multicontext configuration. What would be correct procedure to install it back in production? Do i need to restore backed up config of the fallen unit or is it just enough to enable multimode and connect to existing (primary) unit? Any good link for documentation that deal with this issues.

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Cisco Firewall :: 3845 - Open Port Range On Secondary IPs On Router Interface

Feb 12, 2013

I have 4 public IPs on Router 3845 interface FastEthernet 0/0/1. IP as below. secondary secondary secondary
I wan to allow ports 80 to 90 on for my webserver (

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Cisco Firewall :: ASA 5505 - Dual ISP SLA Track With Primary PPOE Secondary DHCP

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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Cisco Firewall :: ASA5550 - Implement Traffic Shaping / Policing Primarily For P2P Traffic?

Mar 10, 2011

We are looking to implement traffic shaping/policing primarily for P2P traffic. As natively the ASA5550 is only capable of p2p inspection if the traffic is tunneled via port 80 is the AIP-SSM the way forward? We have 2 5550s in active/active failover config. As a side note we are also looking to implement an IDS/IPS system so could this module cover all?Is this module going to provide the desired outcome or is there another module/device out there better suited for this? I would prefer to use the ASA5550s as opposed to implementing another product if only that we can make use of the investment we already made on these devices.

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Cisco Firewall :: ASA 5510 - Users Unable To Access Internet Through Firewall

Feb 26, 2013

I have some problem with the ASA 5510 ver 7.0(6). My manager wants to keep this as backup. tried lots of things but still users not able to access internet nor can i ping anywhere.For example when i ping i dont get any reply.The runing config is below for ur ref :
HQ-ASA-01# show  running-config
: Saved


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Cisco Firewall :: ASA 5510 / Multiple VLANs Behind Single Firewall Segment?

Feb 5, 2012

I need to create a firewalled segment that not only separates hosts from general population, but also from each other.  The solitary confinement of firewalled segments.I know that I could create a bunch of sub-interfaces, one for each host or group that needs to be isolated, but I'd really rather not have to do that if possible.  1) It could become a management nightmare between ACLs and sub-interfaces and 2) it's a waste of IP addresses.s there any way that I can create a bunch of separate VLANs behind the firewall and have them all terminate at the firewall, using a single firewall IP address for the gateway?
VLAN 1 - hosts and 2 - hosts
Firewall DMZ Interface - 3 - hosts and 

This way, the hosts are isolated and can't talk to each other unless they're on the same VLAN.I'm working with an ASA 5510 running 8.2.4(4).

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Cisco Firewall :: ASA 5510 / Enabling Firewall To Send Logging Information?

Jun 22, 2011

I have a ASA 5510 firewall with CSC module and Security Plus license for CSC module.Will you tell me how to configure my firewall to send emails to particular mail ID when someone login into the firewall or any virus attacks from outside.

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Cisco Firewall :: IOS Firewall Versus ASA (5505 / 5510) For Smaller Clients (less Than 50)?

Apr 24, 2012

We were having a discussion of ios firewall vs. asa for smaller clients(less than 50). On using ios firewall(zbf or cbac)and an asa 5505/5510.  One of the arguments brought up on using ios firewall on the router is that a router will do an ip sla failover.  I have configured a number of isr's for this and i know it works good. 

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Cisco Firewall :: Open A Port In ASA 5510 Firewall Using ASDM?

Oct 20, 2012

I would just like to to open UDP port 123 in the ASA 5510 Firewall so that our Primary Domain Controller could use this port to sync time with an external time source. We have already added an access rule for this port under the firewall configuration in ASDM 6.4 and this port was also allowed in the inbound and outbound rule of the PDC's Firewall but it seems that it was still blocked.

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