Cisco Firewall :: Management Of ASA5520 From ITsupport Subnet?

Sep 27, 2012

Currently have an ASA5520, management port is set to management only connected to a management vlan, inside, outside and dmz ports also in use for respective traffic, all is working well, the issue i have is that the ITsupport staff on there user vlan have to have access to manage the ASA with ASDM at all times, this all works fine as i have added a route for management to there subnet, problem is that from this vlan they can no longer ping the remote sites which connect via site to site vpn. For troubleshooting and management purposes this is required, is there any way around this?, if we make the management port not management-only how will this effect other traffic or routing?

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Cisco Firewall :: VPN Password Management - ASA5520?

Dec 15, 2012

I have password management configured on our 5520 for VPN users, and it is prompting and allowing me to change passwords.... however it seems the password change seems to not be replicating to AD.  I am able to access network resources using the old and new password.

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Cisco Firewall :: Changing Subnet Mask In An ASA5520 Interface

Aug 8, 2012

We have an ASA 5520, working fine.One of the interfaces is connected to users PCs and printers mainly. Last months the number of devices has grown rapidly, and we would like to make some changes in it in order for it to be able to host new devices.We thought on change subnet mask of actual subnet ( to, so it can hold as many devices.I understand I have to make some changes in the ASA, but my question is:What will happend to the acces rules I have created?Will I need to create them again? There are some objects which carry information about subnet mask, so I suppose I will need to redefine them, but for those without any subnet mask information, will I have to redefine them?

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Cisco Firewall :: ASA5520 Use Management Interface As Regular

Oct 16, 2011

i have a Cisco ASA 5520 8.4(1) with a ASA 5520 VPN Plus license
i want to use the management interface as a regular interface (using the no management-only command)is this interface a Gig interface as well ?

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Cisco Routers :: Cannot Access The Web Management Interface Of SRP521W-U From A Different Subnet

Oct 30, 2012

i cannot access the web managemnet interface of this router from a different subnet.THe WAN interface is a 4G LTE connection,I have disabled both the SPI firewall and NAT and enabled remote management from any ip address but i cannot access the admin web page from a remote subnet.Doing a port scan of the routers WAN or LAN address i cannot see any ports open at all...its as if firewall or NAT is still enabled somehow.

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Cisco Firewall :: ASA5520 To ASA5520 Via L2L Tunnel

May 31, 2011

Our firewall expert has gone off on long term illness leave and I am trying to pick up the pieces :-(
We have an ASA 5520 (local office) talking to another ASA (remote office) via a VPN Tunnel.
My 1st problem is that I cannot ping from my inside network (local) to the outside interface of my remote ASA.
My 2nd is that I have debug enabled on my rules but am not logging anything.

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Cisco VPN :: ASA5520 / Route Subnet Behind Site To Site To Reach Each Other

Jan 14, 2012

I have some VPN site to site ( site B and site C connect to site A ). This subnet is behind site B. Another subnet is behind site C. I would like to route this to reach the subnet Is there any possibility to do this on ASA5520 (site A)?

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Cisco Firewall :: ASA5520 Bypass All Network Through Firewall

Dec 22, 2011

With regarding to the firewall ASA5520, i'm using it in my network, all the confiuration are properly configured and working but with the use of proxy address in internet explorer(e.: all the blocked contents as easily accessible simply it bypass all the network through will u guide me to block the proxy servers.

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Cisco Firewall :: Keep ASA5520 Firewall In Sync

Aug 22, 2011

I have two asa 5520 firewalls. one at my primary data center connected to our production Internet feed, and one at my fail over data center connected to a backup internet feed. I was wondering if there was an easy way to keep the firewall rules in sync between the two firewalls. We have failover with our isp that will move our public facing address block from our primary site to our dr site in the event of a disaster so the ip addresses will not change if we were to have to fail over to the DR site. currently i just have to do any changes that i make on the fail over server but would like a way to at least simi-automat this if not fully automat this so that i can eliminate the possibility of human error of a change happening at primary but never getting don at DR.

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Cisco Firewall :: ASA 5520 - Routed Management Interface On Transparent Firewall?

May 5, 2013

I have an asa 5520.  How would I configure my dedicated management interface to be able to route off subnet while the firewall is in transparent mode?

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Cisco Firewall :: 5520 Firewall Management Port

Nov 29, 2011

we are having a firewall asa 5520 .we have connected the  management port and inside port to internal network and dmz port to dmz we need to configure tacacs and other management tool on dmz devices through management port. The problem is the management devices tacacs and other are placed in internal network.

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Cisco Firewall :: Only One Internet IP Can Be Used In Asa5520?

Sep 25, 2011

I have a asa5520 with five Internet IP.One for the internet interface and the others are static maped to dmz hosts. It runs rightly until yesterday.Now it will lose the connection to the gateway many times everyday and the dmz hosts can not connect to internet any time. configuration(simplified):
interface GigabitEthernet0/0
nameif internet
security-level 0


I called ISP to check,when ISP clear their router's ARP, the asa will lose the connection at the same time and then the ISP's router couldn't learn the ASA's MAC. After I 'clear arp' manually,The ISP's router can learn the ASA's MAC and the connection recovered,but the DMZ's cann't access internet still (of course,There is no problem between DMZ and ASA ,I ping the internet gateway from DMZ host and can not get any reply.).

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Cisco Firewall :: Upgrade 8.2.2 On ASA5520?

Oct 3, 2011

We have 2 x ASA5520 and I upgraded this to 8.2.2 last year, I see 8.2.5 and now 8.4 is out.  If we are having no issues, is it best just to leave it as it is?  I can see a couple of features I may find useful in 8.2.5, but 8.4 seems like a huge jump and a risky one too.

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Cisco :: Firewall ASA5520 Is Very Slow

May 8, 2011

I have one firewall ASA5520, are very slow

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Cisco Firewall :: Cannot Ping ASA5520 From LAN

Mar 7, 2011

I am trying to introduce an ASA5520 to my network based on the following diagram: ISP Internet ------> ASA5520 ------- > Cisco Router ------> LAN. The problem is I cannot ping the ASA from the LAN. I can ping it from  inside the router.  I already allow ICMP within ASA. If i remove the  cisco router and replace it by a swich, I can ping the ASA with NO problem.

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Cisco Firewall :: ASA5520 With Different CPU Type?

May 16, 2011

We want to use ASA5520 but both Firewall have different CPU. One has CPU Pentium 4 2400 MHz and another has Pentium 4 Celeron 2000 MHz. Can it be configured for replica / failover?

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Cisco Firewall :: LAN To LAN Between ASA5520 Version 8.3 And PIX?

Apr 19, 2011

We have 2 firewalls on PIX facing the Internet and connected to interface e1 (behind it) an ASA version 8.3 Both the PIX (Firewall facing) and the ASA are on the same subnet.
By using Routing statements and statics I have been able to reroute specific traffic to the ASA5520 version 8.3 Now I need to inverse the 2 devices. The ASA5520 will be facing the Internet and the PIX will be behind it.Unfortunately the ASA5520 is refusing to route the traffic to the PIX. The access-lists are open accordingly and a NAT on the ASA has been created.

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Cisco Firewall :: Client Uses ISP DNS Under ASA5520?

May 31, 2013

i have my router connected to ISP then my router directly connected to my ASA5520....i use also ASA5520 as my DHCP Server and i was wondering with the DHCP Server function of ASA 5520 because if i use the ASA 5520 LAN ip ...all workstation will not be able to browse anything from the internet unless i use my ISP DNS IP which they gave me?

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Cisco Firewall :: Using CSC SSM 6.6.1125.0 With ASA5520 8.4(4)1?

Sep 4, 2012

Get the following log message on secondary ASA console output when turning on the ASA failover function?
"Mate's service module (CSC SSM 6.6.1125.0) on slot 1 is different from mine (CSC SSM 6.6.1125.0)"
After that the secondary cannot join as a failover unit and shows in disabled status.We have the same model ASA & CSC module and each pair of them are in same firmware (CSC 6.6.1125.0 with ASA5520 8.4(4)1), when I shutdown both the csc modules, the ASA failover works fine.

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Cisco Firewall :: ASA5520 To Act As Web Proxy

Dec 15, 2012

I am using a squid proxy behind an ASA5520 firewall to collect the users to the internet. Squid is just necessary to log what is going on in order to find a quick solution when the internet slows down.
Considering that I have unlimited licenses and I would like to get rid of squid, I wonder if the ASA has some functionalities to track which websites are being used and how much traffic is generated. If there is not, I would like to know if Cisco offers a good product to replace Squid.

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Cisco Firewall :: ASA5520 Upgrade 7.2 To 8.4

Jun 8, 2011

Upgraded an ASA5520 from 7.x to 8.4 in one step? Release notes for 8.4 state that you can "...upgrade from any previous release directly to 8.4..."  I've read the previous version release notes and see the various changes in NAT etc that 8.3 made.

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Cisco :: ASA5520 / Two Firewall Are Unknown On LMS 4.0.1

Jul 5, 2011

My customer had 2 asa5520 version:8.0(5)20 and LMS 4.0.1.Two Firewall are "unknow" on LMS, why ?Normally, LMS manages ASA with version 7 min.

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Cisco Firewall :: ASA5520 VPN Support Over DSL

Jan 5, 2012

Any limits on the number of IPSec sessions an ASA5520 can support over a DSL connection?
Currently, as we increase the number of IPSec VPN tunnels, our LAN switches connected to the DSL/ASA start seeing CRC/input errors.   Tried different LAN ports for both DSL/ASA connections - same reults (CRCs and errors).   Swapped ASA for PC running 1 IPSEC w/HD video and no issues.
VPN connection bandwidth demand 50% of DSL capacity, so not exceeding DSL bandwidth.    Errors get so bad that all VPN sessions drop - sometimes VPN sessions re-establish while other instances a DSL modem reboot is required.
cause of LAN switch connections seeing errors with 4+ VPN sessions established on ASA across a DSL Internet circuit?

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Cisco Firewall :: Cut-Through Proxy Not Working With ASA5520

Jan 16, 2012

I'm trying to configure an ASA 5520 with cut-through proxy feature. The user is required to be authenticated when trying to access an outside resource from the inside. This is a test lab before it is implemented in production. [code]

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Cisco Firewall :: How To Enable Not Used Interfaces On ASA5520

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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Cisco Firewall :: ASA5520 Cannot Ping Outside World

May 22, 2013

I have Cisco ASA5520 with  a 8.4 code in GNS3.  I have a problem pinging to the internet.  On the ASA console, I can ping  to outside world, but on vpc  I cannot ping the outside world.  But I can ping the ASA Inside interface and other VLANs, no problem. [code]

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Cisco Firewall :: Access-list On ASA5520

Feb 23, 2011

I have a question about access-lists on ASA: (5520 running 8.4)Often I want to permit all traffic from networks behind an interface (let's say DMZ in this example) to Internet, but NOT to internal networks. Then I  first configure a Deny from DMZ to all internal network and then a Permit to ANY. If I forget the first Deny I will allow all traffic also to my internal networks. Is it possible to configure an access-list that permit all traffic from a network to all networks that are reachable via a given interface? In this example: Permit all traffic from DMZ to all networks that are reachable via the Outside-interface? This should permit traffic to Internet and deny traffic to internal networks in one statement.If I specify the outside-interface as the destination only traffic to the interface itself will be allowed.

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Cisco Firewall :: ASA5520 Not Allowing Traceroute

Oct 31, 2011

I've got an annoying problem with my ASA 5520.I have traffic going from the inside interface (security level 100) to the outside interface (security level 0) with a global PAT applied to the outside interface address for all inside traffic - and I can't seem to traceroute through the firewall.The ruleset is simple - basically, allow any IP from inside to outside. The NAT is simple - PAT all traffic unless exempted to the IP address of the outside interface.If I do the trace from my internet edge router it works fine - so I know it's not soemthing my uplinks are filtering - but if I do it through the firewall, I get perfect responses until the hop where it hits the firewall interface - then nothing.Is there something I am missing that I need to do to allow traceroute to just work with all the rest of the traffic?

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Cisco Firewall :: How To Verify If CG-NMS Is Enabled On ASA5520

Apr 11, 2013

how do I verify if CG-NMS is enabled on ASA5520. I just need to know if it's enable/install to be enabled and used?Cisco Adaptive Security Appliance Software Version 8.0(5)28..Device Manager Version 6.1(5)51

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Cisco Firewall :: Inspect Not Working In ASA5520?

Aug 15, 2012

I have a cisco ASA5520 box running with IOS version8.2(5)13 where default policy map is applied globally. But I have not seen any traffic being inspected through included protocol defined under policy map.All configuration seems to be ok for me.
service-policy global_policy global
 Global policy:
  Service-policy: global_policy
Class-map: inspection_default
Inspect: ftp, packet 0, drop 0, reset-drop 0


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Cisco Firewall :: SSH Stopped Working On ASA5520?

Mar 27, 2012

I can no longer SSH to a primary active firewall. It had all of a sudden stopped working.  However I am able to SSH to the secondary standby firewall without any problems. I did try to regenerate the RSA key on the primary fw, but still unable to connect. The only way I can connect to it is by using telnet.
I ran the "show asp table socket" command and I'm seeing port 22 listening on the primary IP address (not the standby), foreign address is*. I did a packet capture on port 22 on the inside inside, seeing my request hit the fw and then right away a reset back from the fw.
version 8.2.(5)
model ASA5520
I'm hitting a bug in the software version I'm running? Or what else can I check before rebooting the primary fw?

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Cisco Firewall :: Zero Downtime IOS Upgrade On ASA5520

Jun 5, 2011

We are planning to upgrade IOS on a 5520 pair, from 7.2.4 to 8.2.4, and cause minimum outage. And according to the documentation, we can do the zero downtime IOS upgrade by failing over to the standby ASA and back.
So, can during this process, can we go from 7.2.5 to 8.0.5 (last maintenance release), or do we have to move to 8.0.2 first ?

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Cisco Firewall :: ASA5520 And Public IP Zone

Apr 5, 2011

I'm trying to setup a zone behind my firewall with complete publicly routeable IP addresses for 3 servers. The reason I'm doing this is I am in the network setup stage of an OCS implementation, and OCS connections don't behave well with NAT.
My device is a ASA5520. I have an internal zone, and a dmz zone. These are done via standard NAT configurations.
My question is this:
Is it possible to setup connectivity to the outside with internal servers that have Public IP's directly on their NIC's? Another little detail of interest is that this ip space is seperate than the one that's on current Outside interface facing our ISP. However we own both address space.

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