Cisco Firewall :: 5520 High Memory Usage And Error Creating Access Rules
Feb 13, 2013
I'm having a problem with the memory and also trying to create some rules on the CISCO ASA. The version that I got installed was the 8.2.5.33 on a CISCO 5520 with 512 RAM, the memory usage is on 99% used, 1% free and because of that when I'm trying to create a new rule the firewall brings me the next error..So what I did was a downgrade to the version 8.2 (4) 4 and the memory went down a little (82% used, 18% free) but I still got the error when I'm creating an access rule on the device. One thing and I'm not sure if this could affect on the performance are the number of access list and the object groups that are created.
I already open a case with CISCO TAC and they are checking if the problem is with the memory capacity or maybe a memory leak.Also the doubt that I got is with the memory that I got now available should I can create access rules or 82 is still to hig to create a rule or and object group?
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Aug 2, 2011
Our company has recently upgraded our firewall from a Borderware Steelgate v7.1 platform to a Cisco ASA 5520 platform. Needless to say the interface on the Cisco platform is much more complex and I don't have much experience working with firewalls. Our other IT guy is out of town and this is the first time I have worked on this setup.
I need to create the following access rule
I need to open port 4**0 to be allowed through the firewall from external ip address 10.XXX.XX.XXX only. Then forward port 4**0 to 10.XX.XX.XX port 80 tcp
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Oct 9, 2012
I am currently getting a strange error when trying to use and crypto services on our ASA 5520 (8.0.3)Initially I observed that a connected VPN had dropped.Then when I attempted to use ASDM or SSH I was blocked.
In the end I opened telnet as a test and this was successful. Syslog also shows that traffic is passing as normal.The only obvious error I can see when observing various debug traces is this;
FW02# CTM: rsa session with no priority allocated @ 0xCF1FBBA0
CTM: Session 0xCF1FBBA0 uses a nlite (Nitrox Lite) as its hardware engine
CTM: rsa context allocated for session 0xCF1FBBA0
CTM: rsa session with no priority allocated @ 0xCE7A5EA8
[code]....
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Nov 2, 2011
We are moving from a different vendor to ASA 5520s. So far my "training" for Cisco consists of s Cisco press book, some white papers and guides, this website, and a bunch of mistakes. So, I have what is probably a pretty basic question for most folks.
What is the difference between Firewall Access Rules and ACL/ACE? And when to use which?
for example: on my ASA 5520s I've set up an Interface for my internal LAN: 172.16.x.x., a DMZ 192.168.2.0/24, and an interface for the Internet side. The 5520 is set up as a routing firewall betwen my internal lan, DMZ, and Internet.
If I want to allow my internal users Internet access for http and https would I use a Firewall Access rule?For most of my rules allowing outbound access from my 172 LAN and DMZ and inbound access to devices in my DMZ can I mostly utilize the Firewall Access Rules?
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Nov 4, 2012
This is just a general question... is there a good way to organize the ASA's access rule list to increase its efficiency? Maybe by service or hit count (Top 10). I am using the Cisco ASDM 6.2 to manage our ASA 5520.
Looking at it looks very unappealing and I'm in the process of adding names and descriptions to all the Network Objects.
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Mar 23, 2012
Ive migrated from my lab pix to a lab asa and am trying to open certain ports to my internal network.
in my confg on my pix i had acls to open port 51413 to an inside host along with the static nat rule.
what i am trying to accomplish is same on my asa, however the nat rules seem to be slightly different, and i'm not completely sure how to do it.
My ACL and nat rule is below. I'm pretty certain my acl is correct,but i am not sure as to what to do with my NAT rules to allow a translation for the tcp service.
access-list outside-in extended permit object tcp51413 any object outside nat (inside,outside) source dynamic all-inside-nat interface
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Apr 2, 2012
I am running IOS version 8.0(5) in cisco ASA 5520. This issue i am facing is that when the memory utilzation reaches 49 percent, the web-vpn users are not able to login as they are getting a blank page. The only error which is getting in the output " sh mem webvpn allobjects" is ERROR: Memory allocation failed?
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Jul 3, 2012
Come across pix 525 with 7.2.4 , 256 MB RAM, experienceing high memory utilization ?.show memory was giving used memory = 97%.All I had done was, i did a reboot of the firewall since we were not able to take the control of the f/w.I wonder why only the standby f/w had this issue and not the primary does not have, just to rule out that it was not due to Traffic.I have searched in bugtool kits and support forums and did not find anything relevant except for a similar issue for ASA CSCsg43844.
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Feb 15, 2012
We had two PIXes in our environment and working as a active-failover mode. Its noted in now a days the active PIX memory utilization is 98% and for standby PIX it is 96%. And also in some times we were experiencing packet loss to the ip of active PIX and which reflects in the inside servers access also. During that time the active pix was not accessible via ssh as well as ASDM. We have tried reloading the PIX and changing failover state of the PIX, but it results only a temporary solution. Current memory installed is 128 MB (maximum upgraded), so a upgrade is also not possible. Please see the show command outputs from the PIX. Current Software version is 7.2(4)
sh memory output (PIX 1 - active)
Free memory: 4850944 bytes ( 4%)
Used memory: 129366784 bytes (96%)
[code]....
1) How we can pin point the root cause of this high memory utilization?
2) What might be the reason for the high memory utilization for the standby pix (96%), still the PIX is in idle state?
3) Is it a hardware issue or a memory leak issue, then how can we find out?
4) Is a software upgrade to new version resolves the memory issue?
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Sep 13, 2012
We recently added about 400 users to our network for a total of 1000. Looking at the ASDM we are holding very tight to 75% utilization and we have 256mbs. This is also running IOS 8.2(1). Our firewall recently crashed after a major download was forced through it. This was after only being booted up for about a week. We had reloaded it a week prior after having ran it for about a year without issue. We havent made any changes in the last month other than adding more users to our network.
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Jan 28, 2013
I have configured an ASA 5510 and 2960S 48 port switch in a lab environment. I have two laptops connected to seperate subinterfaces with server 2003 as dhcp server for one network. Everything has been working fine as we have been testing the ASA while also testing the csc smm module. When we came in today we noticed the csc module cpu is running at 100% constantly and http traffic is extremely slow. I have not yet received my smartnet contracts from the vendor or I would open a TAC case and I have read on the net that this is a common problem.
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Aug 26, 2012
When trying to access the asa (8.0(3)) with asdm the console send follwing error message:
vPif_isVpifNumValid: pifNum out of range!
vPif_getVpif: bad vPifNum(0xa6) from 87EBC81 from 83833B4
Have a strong suspicion that it is a hardware failure (since asdm has worked and have tried to restart the box) can not see any errors with any show commands, but could it be a RAM error .
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Jan 20, 2013
I recently reboot my asa 5520, I was trying to remove webvpn listening from my outside nic, even though it wasn't configured. [code]I was planning to do another reload without the fast reload option.
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Feb 26, 2012
I have ASA that just started to reboot through out the day yesterday. It seems to happen every few hours but not in a pattern.Right before it reboots there is a flood of sys log id 305006 messages "portmap translation creation failed for tcp src inside:xxx dst outside:xxx the xlats go from around 2-3k to about 30+k then crash.Memory ussage is already pretty high normally on this device (about %75 used) CPU is around %15-20 I notice that the portmap translation errors are always from 3 inside host.
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Jan 31, 2013
I am in a non-admin context mode in ASA 5520 8.0 (5) and i m trying to add a new interface
GigabitEthernet1/2.4 172.19.4.1 255.255.254.0 manualGigabitEthernet1/2.6 172.19.6.1 255.255.255.0 CONFIGGigabitEthernet1/2.180 172.19.180.1 255.255.252.0 manualGigabitEthernet1/2.190 172.19.190.1 255.255.254.0 manualgvadc-fw/tgf# conf tgvadc-fw/tgf(config)# int ggvadc-fw/tgf(config)# int gigabitEthernet 1/2?
configure mode commands/options:1/2.180 1/2.190 1/2.4 1/2.6gvadc-fw/tgf(config)# int gigabitEthernet 1/2.168 ?ERROR: % Unrecognized commandgvadc-fw/tgf(config)#
what do i do?
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May 28, 2013
We have a pair of ASA running 8.0 (old) version. The way we create outbound rules is done through ASDM and when we need to open outbound connections to a server in the internet, we create named object with IP address configured manually.But practically , this doesnt work, since the server is a server name which can resolve to multiple addresses. Everytime the server chagnes its IP the ASA rule needs to be updated.Is there a difference if we add rules through CMD prompt as against ASDM where we need to enter IP addresses?
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Nov 3, 2011
I am trying to create host objects that I'll then add to network-object groups for use in ACL/ACEs.When I try to create a host I am having trouble adding the IP address.I then get an error saying the host name must start and end with letters or numbers and only contain letters or numbers. What do I need to do to create hosts from CLI?
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May 2, 2013
I was looking at my CISCO ASA 5520 and i found something really strange
ciscoasa/VPN-context# sh mem detail
Used memory: 4259249568 bytes (793%)
------------- ----------------
Total memory: 536870912 bytes (100%)
but when I look at the system context this is what I see
ciscoasa# sh mem
Free memory: 170829000 bytes (32%)
Used memory: 366041912 bytes (68%)
------------- ----------------
Total memory: 536870912 bytes (100%)
As far as I know the ASA is working good.
Info of the device
Hardware: ASA5520, 512 MB RAM, CPU Pentium 4 Celeron 2000 MHz
Internal ATA Compact Flash, 256MB
BIOS Flash M50FW080 @ 0xffe00000, 1024KB
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May 8, 2012
Our company’s Cisco ASA 5520 CPU usage drastically increased up to 93% after installing the antivirus our company purchased. Upon entering the show commands, which I will post the result later, it shows that the “Dispatch Unit is very high. I tried to clear the conn of each IP address that has very high bytes, but nothing happened.
INTFW(config)# show proc cpu-usage sorted non-zero
PC Thread 5Sec 1Min 5Min Process
081aa324 6bdaf870 81.3% 81.5% 81.4% Dispatch Unit
[Code]....
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Mar 10, 2013
Can I use this memory in my 5520 firewall? ASA5510-MEM-1GB=.
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Oct 24, 2012
One of our firewalls - Cisco ASA 5550 8.4.3 - has got a problem. Our monitoring system requests the cpu usage on the box and from time to time we got an error. It was now possible to catch the error message - the output of show cpu usage looks like on the attached picture.We did not found something in the know bugs neither in the "Resolved Caveats in ASA Version 8.4(4.1) ".
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Oct 18, 2011
Im running ASA 8.0(3) on Active/StandBy failover pair.Last night I realized the CPU usage of my production ASA was 99%,,, on the ASDM Firewall Dashboard I can see counters like this:
Dropped Packet Rate (ACL Dropped) = 6000+ (more than 6 thousand)
Scanning Attacks = 18600+ (more than Eighteen thousand)
I went on the ASDM and checked the RealTime Log viewer and I have about 30 entries per second of these:
4Oct 19 201111:35:12401004Shunned packet: 10.64.10.1 ==> 10.64.0.1 on interface NewLAN
[code]...
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Jul 27, 2011
I have an ASA 5520 with a CSC-SSM modul,the problem is when i am logging in to my ASDM, on the content security monitoring, it's showing the CPU and memory are at 100%(CSC) but when i directly connect csc-ssm MODULE it comes down,so is it problem with ASDM , java OR csc.
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Sep 19, 2012
Are the ASA memory DIMMs created for specific models? Would a 1GB 5510 Memory stick work in a 5520?
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Nov 13, 2011
I'm having trouble setting up a wireless internet connection for my computers, I connected the patch cable from my modem to a wireless router, then connected to that network with a usb for my computer.I was able to connect to the network, but couldn't seem to actually get into the internet. Is there any solutions to this?
When doing ipconfig /all, the message I get is:
Windows IP Configuration
Host Name . . . . . . . . . . . . : Victors
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
[code]....
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Jun 24, 2012
I've been looking for a way to create an internet usage agreement page, but have been striking out..looking for users to initiate an http session, get proxied to "user agreement page" upon approval their http session is allowed.
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Dec 22, 2012
we have ASA 5520 with IOS 8.0 , when i am trying to add more static routes on the inside interface the CPU utilization is going up. one faced the same issue. I am configuring through the cisco ASDM 6.1(3)f.
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Sep 25, 2012
I am seeing high cpu utilization on 5520.
fw# sh processes cpu-usage sorted non-zero
PC Thread 5Sec 1Min 5Min Process
0x081e1e11 0x6ddc1528 70.6% 66.5% 66.0% Dispatch Unit
0x08ed170c 0x6ddb9b48 1.6% 1.7% 1.8% Logger
0x08dd5f2c 0x6ddafee0 1.5% 1.5% 1.5% SNMP Notify Thread
0x08e8d045 0x6dd99348 0.1% 0.1% 0.1% ssh
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Aug 20, 2012
What is the average memory usage for a Cisco 5508 with 500 APs (mostly 3502s) running 7.0.116.0 code? I am currently at 450 access points and have 80% memory usage should I be concerned?
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Mar 20, 2011
A customer is currently running a 5520 ASA pair in active/standby HA mode. The devices also have an IPS module, one of them using a temporary (60-day) license. So, right now, licensing is identical on both ASAs and HA is operational.
The question is what exactly will happen after 60 days, once the temporary license expires? Does HA shutdown completely once it's determined that the licensing isn't a 100% match any longer, or does it just cripple one feature (such as the IPS module)?
The customer is balking at purchasing SMARTnet for the 2nd ASA, so I need to explain exactly what is going to happen (if anything) once the license on the 2nd ASA drops off...
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Nov 16, 2011
I'm encountering what I think is an issue on logging system on FW ASA 5520 - Asa Version 8.4(2), ASDM version 6.4(5). When I disabled the logging inside a rule from ASDM, or from console with the "log disable" option inside ACL, If I check in ASDM logging real time window I continue to see all the entry related to disabled rules. This is a correct behaviour about ASA logging ? How I can "hide" the entry related to disabled rules (this is what I need for troubleshooting purposes) ?
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Mar 21, 2012
i have a cisco 837.I need hardening the access and firewall rules. I dont understand ip inspect.
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Nov 1, 2011
I am new to Cisco firewalls. We are moving from a different vendor to Cisco ASA 5520s.I have two ASA 5520s running ASA 8.2(5). I am managing them with ASDM 6.4(5).I am trying to setup Active/Standby using the High Availability Wizard. I have interfaces on each device setup with just an IP address and subnet mask. Primary is 10.1.70.1/24 and secondary is 10.1.70.2/24. The interfaces are connected to a switch and these interfaces are the only nodes on this switch. When I run the Wizard on the primary, configure for Active/Standby, enter the peer IP of 10.1.70.2 and I get an error message saying that the peer test failed, followed by an error saying ASDM is temporarily unable to connect to the firewall.
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