Cisco Firewall :: ISP Migration With ASA 5510 And External Router?

Nov 26, 2012

My company (in Healthcare) is going to be changing ISPs for our internet connectivity, and with this change comes a new external IP block.  So I need a scheme to migrate over all of my existing VPN tunnels and other items over to new IP addresses.  We do have an external router which I plan on doing a route-map to handle which traffic the ISP should go to based on IP.  My big concern is for the ASA 5510.  Can I setup a second outside interface on the new IP range?  Then migrate my VPN tunnels over one-by-one?  A drop-dead cutover date is just not possible with all of the external companies that I have to contact to get VPN tunnels updated with.  If it's not possible, we have in our budget to get another 5510 next year as a redundant unit.  I may be able to get that early and just migrate from one firewall to another.

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Cisco Firewall :: ASA 5510 / ASA 8.3 Migration - Expanded Access List

Apr 24, 2011

I have just upgraded a ASA5510 from 8.2 to 8.3 using migration tool.All seemed to go well, still double checking the config as this is a bench test of upgrade prior to filed upgrades.
Anyway one thing that is slightly frustrating is that the migration has expanded all of my access-lists, so we maybe had 10 lines of config relating to access-lists based on access-groups, now we have hundreds of lines.On ASDM this is bad enough but on CLI with show run its a bit of a bind.
Is there any way to un-expand the access list or do I simply delete and start again using my access groups.

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Cisco Firewall :: Allow One External IP To Use NAT On ASA 5510 Sec Plus

May 2, 2012

I keep struggling with Cisco ASA. How I can make a certain NAT (RDP, SSL or whatever) and securing it by allowing just one external client with fixed internet IP to make use of this NAT?

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Cisco Firewall :: ASA 5510 - Two External Subnets On The Same Interface

Oct 21, 2012

I have two ASA 5510 in an active-standby cluster, not that I think that the fact that they are clustered will be of any importance here so feel free to think of it as a single 5510. The internet connection is delivered in a single RJ45 connection. To be able to use it with the cluster there is a simple unmanaged switch connected between the ISP and the ASA's. I have two subnets with public addresses, for simplicity lets call them and Default routers are and respectively.
Can I somehow use both these subnets in the ASA's? Im currently using the first subnet and use PAT to direct traffic to internal servers. But if I want to use adresses from the second subnet wont that mess up the routing, since there is no way I can specify the default router for the second subnet? I have as of yet not tried anything, Im just trying to plan ahead and I cant seem to wrap my head around how this could possibly be done.

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Cisco Firewall :: 5510 - Can’t Access External IP From Within LAN

Oct 20, 2010

Basically we have different customers using the same 5510 firewall. We have created one sub interface for every customer on the inside interface. There are differed NAT rules for every customer all using the same block of public IP addresses on the outside interface. They do not have access to each other’s network so I cannot make any exemption rules between two sub interfaces. The problem is for all our customers that they cannot communicate with each other over Internet, Email, Applications etc. using the external IP address. A work around is to use a proxy server, but they do not agree with that. I cannot make exemption rules between sub interfaces for security reasons.

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Cisco Firewall :: ASA 5510 - Enable External Access To Server On DMZ

Apr 5, 2011

i'' ve one appliance ASA 5510, v8.X and asdm 6X here u have my configuration :
interface Ethernet0/0 description Link To WAN nameif outside security-level 0 ip address!interface Ethernet0/1 description Link to LAN(forefront) nameif inside security-level 100 ip address!interface Ethernet0/2 description Link to CoreSW (DMZ) nameif DMZ security-level 50 ip address
i have on server ssh ( on my DMZ .
I wan to enable my external user, i mean outside user to be able to access to this server which is in my DMZ for this port ( ssh)

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Cisco Firewall :: Assign Several IP Addresses To External Interface ASA 5510?

Oct 13, 2011

How do i tell my firewall to start listen also on another outside ipadress assigned by my ISP? I have it used on other firewall right now. So my steps would be shutting down ip address assignment off old firewall interface. Assign that ip address to ASA5510 outside interface and configure NAT.

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Cisco Firewall :: ASA 5510 - Connecting To External IP Of Internal Server

Sep 25, 2012

I was just wondering if it's possible with an ASA 5510 to connect to the external IP address of an internal server from inside the network.  I have already set up dns doctoring for dns lookups, and everything is working fine there.  We have an application inside the network that tries to connect straight to the external Ip of another internal server.  where to look in the ASDM 6.4?

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Cisco Firewall :: ASA 5510 Preventing External SNMP Response

May 13, 2010

I have the following setup:
R: 3840
F: ASA 5510
H: Hosts 1 and 2
I am trying to get SNMP info from the router to H2 but snmpwalk errors with no response from router. I can get info from H1 and neither interface on router is preventing SNMP traffic from coming or going.Is there something that needs to be configured to allow SNMP traffic (orginating from INSIDE) to reply? (Also note that there is no Inspect Maps blocking and SNMP versions).

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Cisco Firewall :: 5510 - How To Allow Access From LAN To Server Using External FQDN

Feb 20, 2012

I may have phrased the topic not too clearly, but I have an external domain name of , I want my users INSIDE the company be able to also get to url..., currently they cannot (nothing loads, looks to me as if firewall simply drops it) and I'm drawing a blank on how to get this done. Externally this works fine so if you're outside the company you can load up OWA just fine since my NAT rule translates the external IP to internal IP, but something is blocking this from the inside.
I have an ASA 5510. If you can just sent me on the right path with theory I'll figure it out on my own, I don't need exact steps, but I must be thinking of this wrong as I'm not getting anywhere.

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Cisco Firewall :: Statically PAT Multiple Internal Hosts To One External Host 5510

Feb 20, 2012

I am working on replacing our Checkpoint Firewalls with ASA's, and am running into the following NAT problem. On some of our Checkpoints, there are external NAT's that are mapped to multiple internal hosts based on ports.Is there any way to translate that to the ASA? I'm not sure the ASA will let you have multiple internal hosts mapped to one external IP using static NATs. The main issue, is these are alarm panels that receive data from external hosts (the traffic is initiated externally on the Internet) so I can't use dynamic PAT with this.

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Cisco Firewall :: 5510 Security Plus To Terminate Client VPN Access For External Support Team

Aug 7, 2012

I have a customer that wants to purchase an ASA 5510 security plus to terminate client VPN access for an external support team. The customer claims to want URL content filtering/proxy which leads me to suggest a CSC SSM 20 plus module. But upon further conversation, he mentioned wanting IPS. In this case, the customer does not seem to know the difference between the URL content filter/proxy and the IPS and uses both terms interchangably.
1. What would you suggest in your expert opinion would be the best module to get for this customer? IPS or CSC
2. If I go with the CSC module, where can I find good documentation on how to configure it and get it up to date?
3. does the CSC module provide any web proxy functionality?

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Cisco VPN :: Migration From ASA 5505 To 5510

Jun 27, 2012

my company has the asa 5505 working as the remote access vpn server. my company needs more licenses for vpn than the asa 5505 give it. because of my company purchased the asa 5510. i must migrate configuration from the asa 5505 to the asa 5510. i exported configuration file from asa 5505. i made the changes on them and imported them in the asa 5510. my asa5510 doesn't work. i putted configuration files from asa 5505 and 5510.

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Cisco Firewall :: PIX To ASA 8.3 Migration?

Mar 8, 2011

As we are all aware that the ASA8.3 has quite some changes interms of configuration method.
I would like to know if it is possible to use the pix to Asa conversion tool for 8.3 purpose.

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Cisco Firewall :: ASA 8.0 Configuration Migration To 8.6

Feb 12, 2013

I have old ASA with 8.0 configuration that includes huge number of ACL, NAT , VPNs , we got a new ASA with 8.6 , and we are planning to move the configuration to the new box , I'm wondering what is the best approach to do this , I'm thinking of one of the following scenarios1- downgrade the new ASA to 8.3 , the apply the config , remove the identity nat commands and names then upgrade to 8.6 and after that reconfigure the NAT rules and object groups .2- convert the old config manually to 8.6 code including NAT , object-group ,ACL and apply it to the new ASA ( this is going to be huge task). What are the commands that I have to look at when I convert to 8.6 and will the VPN configuration be affected ?

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Cisco Firewall :: Migration PIX 515 8.0(3) To ASA 5525-X

May 28, 2012

I have a PIX 515 with version 8.0(3). We buy a ASA 5525-X for replace the PIX.
The question is, what is the better method to migrade the configurations? Manually?

What is the better version for 5525-X? 8.6.1?

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Cisco Firewall :: Migration Error Upgrading To ASA 8.4.4

Oct 25, 2012

I was trying to upgrade an ASA to from 8.2.4 to 8.4.4, and I began receiving the following migration errors (the IP addresses have been changed to protect the innocent):
ERROR: MIGRATION: The following ACE is partially/not migrated to Real IP, as it could result in more permissive policy. Please manually migrate this ACE. permit esp host host    
I got a TON of these, in fact the migration, and these errors ran for over 24 hours before I gave up, powercycled the unit and forced 8.2.4 to boot through ROMMON.  This was a secondary unit, that's why I let it go this long.
What I don't understand is that we do not have anything in the configuration for ESP.

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Cisco Firewall :: Migration Utility For PIX 515 8.0 To ASA5525 8.6

Oct 3, 2012

I don't seem to be able to find a migration utility  for PIX rel 8.0.4 to ASA    8.6 is there one available will save a lot of time

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Cisco Firewall :: PIX 515E To ASA5515 Migration?

Aug 26, 2012

Looking at migrating from the following:
PIX-515EPIX Security Appliance Software Version 8.0(4)Device Manager Version 6.1(5)51
ASA5515Cisco Adaptive Security Appliance Software Version 8.6(1)Device Manager Version 6.6(1)
Is this migration directly supported, or do I need to downgrade first?

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Cisco Firewall :: ASA-AC-M-5520 Migration To ASA-AC-M-5585?

Jan 23, 2013

I have ASA-AC-M-5520, can we migrate the license to ASA-AC-M-5585

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Cisco Firewall :: ASA 8.3 - Migration Changes Hosts To Objects?

Sep 24, 2012

I'm testing upgrading an ASA from 8.2.5 to 8.4.4.  During the the upgrade, it change all of my ACL host entries to objects.  But I noticed that the keyword "host" is still a valid option when creating an ACL.
I'm trying to understand why this change is made during the migration.

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Cisco Firewall :: ASA 5550 To ASA 5555-X Migration

Apr 23, 2013

I am about to carry out a migration from ASA 5550 to ASA 5555-X, however I cannot find any detailed document or reliable tool for this migration.

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Cisco Firewall :: PIX515 To ASA5510 8.4(5) Migration?

Dec 18, 2012

We're migrating as mentioned in the subject and this new format is quite a departure from previous iOS versions so I thought I'd post the configs of the PIX and the ASA and ask if someone is willing to compare them and verify that it is correct and should be basically plug and play. The are outside IP addresses and the yyy.yyy.yyy are inside addresses. .
Existing PIX config
PIX Version 6.3(4)
interface ethernet0 100full


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Cisco Firewall :: Config Migration From ASA5540 To An ASA5545-X?

Jan 22, 2013

Customer has a ASA5540 at their main location and need a new ASA5500 for a DR site.
Can I simply take a config file from an ASA5540 and easily drop it on an ASA5545-X or what ever?
They are going to be using it as a VPN concentrator primarily.
Or are there going to be issues since the 5540 is running 8.4(5) and the 5545-X? Or if they upgrade to 9,0(1) or higher, then they should be the same?

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Cisco Firewall :: ASA 8.3 Real Ip Address Automatic Migration?

Mar 23, 2011

in the ASA Migration Guide for Version 8.3 says about real ip address: "All of the access-listcommands used for these features are automatically migrated unless otherwise noted"
But my ACL's have not been migrated to real ip address. In my migration log:
INFO: NAT migration completed. Real IP migration logs: No ACL was changed as part of Real-ip migrationWhy?So, do I have to migrate them manually?

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Cisco Firewall :: Recreate Objects In Groups After Migration To 8.3?

Feb 22, 2012

when I migrated the ASA config from 8.2 to 8.3, in all groups the group members has been replaced by the IP address object. However, the "name" for this object has been migrated, but there is the "object network name" configuration missing.
What I can do now is that I can open the new created object in the ASDM, search for the object with this IP address and then enter the object name I had before. When I apply the config, ASDM then creates the object and replaces all affected objects in all groups, by replacing the object group memeber "network-object host hostname" with "network-object object hostname".
Do you know if there exists an automated way, which checks all the groups for members "network-object host", creates the "object network" and replaces the "network-object hosts" with "network-object object" within the group? As long we have a lot of groups which contains partially > 50 members?

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Cisco Firewall :: ASA 1000V And ASA 5500 Migration Between Firewalls

Jul 8, 2012

We currently have redundant FWSM's and are planning a migration to standalone ASA 5500 series firewalls. However, we have a complete VMWare environment and are looking at the Nexus 1000V. I understand the Nexus 1000V and VSG architecture and implementation, and I do understand that the ASA 1000V is designed for cloud environments. But I do have one question about the ASA 1000V.
Is it possible for an ASA 5500 series firewall to be replaced by an ASA 1000V? Basically, can an ASA 1000V be a sole firewall solution, or are ASA 5500's still needed? Is there a datasheet anywhere that compares the ASA 1000V and ASA 5500 series?

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Cisco VPN :: ASA 5510 / VPN Behind Another External Interface

Dec 23, 2012

i have an ASA 5510 My ISP provides for me 2 separate public networks. One is routable from outside of the world and one is not (and is used as a gateway for the THAT routable network)

Assume that non routable network is a.a.a.a and routable is b.b.b.b so we have 2 interfaces on asa - a.a.a.1 and b.b.b.1 Physically this  network b.b.b.b is behind network a.a.a.a one cable comes to me and plugged to ASA As i said all traffic from/to external(routable) network is going through network a.a.a.a (and a default gateway at ISP) So the problem:For my international partners i need to provide  VPN.So the traffic flow is the following:for exaple a client with public ip using cisco VPN client trying to connect to b.b.b.1 The packet arrives to interface a.a.a.1 and............. Being  discarded.7Dec 24 201211:09:477100051.1.1.162548b.b.b.110000TCP request discarded from to internet:b.b.b.1/10000 I assume that the ASA discards the packet BECAUSE IT COMES FROM a WRONG interface.Am i right?Also i tried to setup a bypas policy, but no effect?

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Cisco Firewall :: 8023 / External Access To Internal Router Via ASA

Dec 31, 2012

I am aware that we can allow external admins to telnet over a custom port to the internal router. Even i was allowed to connect to a remote router via the remote firewall. The way i was accessing the router is by telnet to the remote ASA address on port 8023.I am not sure how exactly we can configure this on a ASA.

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Cisco Firewall :: PIX To ASA5520 Migration Some Services Aren't Working

May 20, 2013

I've recently migrated a PIX 525 to ASA 5520, but for some reason (through ASA) the users from OUTSIDE aren't able access services published in DMZ as well as some DMZ servers aren't able to communicate to some OUTSIDE services.
-INSIDE to DMZ is working fine. (through ASA)

-INSIDE to OUTSIDE is working fine. (through ASA)
Below is the configuration from my PIX (where everything works just fine) as well as the one on the ASA (where there is a problem), what could be the cause?In the below case the DMZ hosts from aren't able to access SMTP services (through ASA) and the OUTSIDE users aren't able to access DMZ web server ( through ASA, this all just works fine with PIX.
object-group network inside_subnet_all   network-object object inside_subnet_a   network-object object inside_subnet_b   network-object object inside_subnet_c   network-object object inside_subnet_d   network-object object inside_subnet_e   network-object object inside_subnet_f   network-object object inside_subnet_g   network-object object inside_subnet_.access-list OUTSIDE extended permit tcp any object host- object- group WWW-HTTPS access-list DMZ extended permit object SMTP object dmz_subnet any access-list INSIDE extended permit ip

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Cisco VPN :: 5510 External IP Address Not Controlled

Aug 19, 2012

We have a strange issue for one of our customers that recently migrated to our internet service.They are trying to vpn to an external ip address not controlled by ourselves. The issue is only on one subnet and isolated to Mac’s, PCs in the same subnet also work fine. They were able to vpn from the MACs before they migrated to our INET solution. They previously used a checkpoint FW for their outside NAT and firewall and now are using a failover pair of asa 5510s. I have packet traced out the firewall and there should be nothing blocked. UDP ports 500 and 4500 are open to the destination ips from the correct subnets. All other subnets with Windows PCs can vpn out to external ip without issue. The users in that subnet with the MACs can also browse internet fine so the routing and nat overloading is also ok
When they try to initiate a connection from the macs i can see the connection/xlate coming in from a source port of  udp 4500/500 and also a destination of udp 4500/500 instead of a random source port. Just this evening we managed to get one device connected but no others. Would the fact that the source port is claiming 500 and 4500 stop the other macs using the same source ports at the same time to connect out? They are using the onboard mac vpn client, he can’t get the Cisco one working at the minute. [code]

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Cisco VPN :: ASA 5510 ASDM - Routing Over Different External Interface

Sep 18, 2012

I have an ASA 5510.   (ASA 8.0(4)  ASDM 6.1(3) I have 2 internet connections (only 1 is currently active) Currently all internet and VPN traffic go over 1 interface. What I want , is to move general internet onto the new internet connection but keep VPN traffic on the old internet connection. I can get the internet working but as soon as i do the VPNs go down. VPNs are site to site vpns.

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Cisco Firewall :: ASA 5505 Logs All Traffic Shows Up As Router External Address

Nov 10, 2011

I have a cable modem internet connection and my cable modem is connected to an ASA 5505.  The inside interface of the ASA has an IP address of and is connected to a Linksys router's internet port which has an IP address of  The Linksys router then has a local area network of and all my clients are on that network.  Everything is working fine except in my ASA logs all the traffic shows up as the router's external address which is  I would like to see the 192.168.1.x address of the clients in the ASA firewall.  I've tried making some changes to the Linksys router but that hasn't resolved it.  Is there any changes I can make on the ASA to get this to work?  

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