Cisco Firewall :: ASA 5520 - Add Rules Through CMD Prompt As Against ASDM
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 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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Apr 26, 2011
nat global entry not showing up in ASDM but it does via CLI see blow, it's a policy NAT.
nat (inside) 5 access-list inside_nat_outbound_4
global (outside) 5 ************-OUTSIDE netmask 255.0.0.0
Global 5 doesnt show in ASDM 6.1 (5) the globals only go up to 3
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Jan 15, 2012
we replaced our PIX525 firewall with an ASA 5540 firewall, and now we see some strange behavior in ASDM.ASDM does not display all the rules, but i see all all the rules in cli.
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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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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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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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Jun 22, 2011
I have an ASA Firewall 5520 and to add or edit configuration, I use the ASDM interface. For some reason, the admin password that I use is no longer working. The last time I logged on to the firewall was last week and I am the only person with access to it. I used a backup account to login and was able to, but on the menu bar the "Configuration" button is missing.
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Nov 24, 2011
I have 2 ASA5520's in failover pair.After failing over I cannot run ADSM on the secondary (now active device), I get "unable to launch device manager from [primary address]"
I can ASDM to the primary device (now marked as "standby ready") on the failover address. I can SSH to it also.I CANNOT ASDM to the secondary device (now marked as "active") on the primary address. I CAN SSH to it.
When I run "sh asdm image" I get valid output (asdm image disk0:/asdm-645.bin) on both.However when I run "sh ver" on each it appears ASDM is not running on the secondary device :
Cisco Adaptive Security Appliance Software Version xxxx [only]
Compared with :
Cisco Adaptive Security Appliance Software Version xxxx
Device Manager Version 6.4(5)
It appears as though ASDM is only running on the primary device (regardless of the fact it is now in standby mode). Is this normal?
I am having to run in a failover condition due to a intermittent hardware fault on the primary unit but require access to the ASDM for monitoring/diag purposes during this condition.
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May 5, 2010
i have a new ASA 5520 with only factory default settings. I ran the commands below on the CLI as instructed for a Cisco document but i cannot access it via https://192.168.1.1/admin like it says i should be able to.
Step 1 To identify the IP addresses from which the security appliance accepts HTTPS connections, enter the following command for each address or subnet:
#hostname(config)# http source_IP_address mask source_interface
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Jul 11, 2012
I have a ASA 5520 with ASDM641. After I updated my JAVA to v7 update 5 , Build 1.7.0; I cannot launch the ASDM and get this Error: Unable to launch the application.
I have uninstalled and reinstalled the ASDM to no avail.
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Jul 13, 2011
My ASA confi are as follows. i cant to do use ASDM, HTTP, Telnet from my local interface and ip 192.168.0.46 &14.My ASDM is ok as i can connect other ASA. what mismatch here i cant understant.
hostname ciscoasa
enable password DtMryzGjBATmCElZ encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
dns-guard
[code]....
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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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Apr 16, 2013
I have new ASA 5520 from the box and i have configured already int g0/1 with ip 10.15.14.5 255.255.255.0 nameif inside kindly see details below the config
[code]....
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Jun 21, 2011
I have a problem with my ASDM Logging(ASA5520, System image file is "disk0:/asa804-k8.bin").If i generate any traffic, the ASDM do not show the packets correctly. For example, if i generate a icmp traffic from interface inside to outsite, the ASDM does not show the packets, when it shows it apperars just in one direction.
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Feb 27, 2011
We’ve got lot of ASA appliances (around 30, 5505/5510/5520) and we never had this problem since the use of the new image software ASA 8.4(1) and ASDM 6.4(1). So, my problem is located on two ASA 5520 with active/passive failover with ASA image 8.4(1) and ASDM image 6.4(1).
My problem is that our appliance doesn’t show any logs when an ACL deny a packet, even if when I specify a specific “deny ACL” with a specific logging condition, asdm and ssh buffer logging are empty but the counters of the ACL increment.
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Sep 15, 2011
I want to setup NAT with ASDM on ASA for a client and I can not make it work. I have several interface:
Inside: 10.97.0.1 / 24
Outside: 10.0.1.70 /24
Interco: 192.168.6.1 /24
Other Sites: 10.26.0.4 /24
All routing in the network is Ok My customer want to access a server @ ip 10.194.70.1 in https on the interface Interco with his nat address as 10.97.0.11 .This server must be accessible with the address 10.97.0.11:443 from interfaces inside, outside and other sites.And source address must be nated with original destination address 10.97.0.11 to be redirected on 10.194.70.1.
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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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Oct 10, 2011
I want to create a local user in my Cisco ASA 5520 to allow the user to use the ASDM in Read-Only mode. I want the user to view the Dashboard only.
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Feb 23, 2012
We are running ASA5520 with version 8.4(2)8 software and ASDM 6.4(5)205.We have noticed the following problems:When having more than 30 IPSec,sessions connected, the log fills up with errors "System is low on free memory blocks of size...", When filtering by "AnyConnect Client" in "Monitoring > VPN > VPN Statistics > Sessions" the values "Bytes Tx / Bytes Rx" column is presented in one line ie. "8450198968129194". Seems to be missing a <cr><lf>,When uploading a new CSD-image (via ASDM) all configuration för GPO, CP, DAP seems to dissapear, though, the config seems ok when looking at a sh run. Also, the newly updated csd-image doesn't show i ASDM.
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Jan 20, 2013
I have upgraded my ASA 5520 til version 9.1 with ASDM version 7.1. After the upgrade ASDM shows a lot of IPSEC VPN-sessions in the GUI that i cannot see from the ASA. Right now the GUI says that I have 28 IPSEC-sessions while the output from "show vpn-sessiondb l2l" shows the expected 4 tunnels and the output from "show vpn-sessiopndb remote" shows 0 as expected. (I do not use IPSEC from remote users).
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Aug 22, 2012
yesterday I tried to connect to our ASA 5520 using ASDM Launcher, which has alwasy worked before. For some reason ASDM Launcher is no longer working from both my Win XP desktop and Win XP laptop. I can open ASDM through the browser but not the launcher. Both desktop and laptop have Java 7 U 6. I'm not sure if I can back rev my Java.
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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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Jul 5, 2012
I am configuring a 2921 with enhanced security using the CCP. I have found a behavior that seems strange to me and I'm not sure if I'm misunderstanding something or missing a setting. It seems that if I create a firewall rule to "allow" traffic through, that traffic gets dropped, but if I set the action to "Inspect", the traffic comes through fine. I can actually reproduce this at will by setting up a rule from out-zone to self to allow traffic and I cannot telnet into it from an external ip, but if I change that rule to "inspect" i can connect fine (i dont want that rule set up permanently, was just using it to test the firewall).
If I set the allow rule to log, I see the following line in the application security log:
(target:class)-(ccp-zp-out-self:user-fw-ccp) Passing telnet pkt 1.1.1.1:58141 => 2.2.2.2:23 with ip ident 0
(where 1.1.1.1 is the external laptop and 2.2.2.2 is my WAN IP address of the 2921)
So it looks to be passing the traffic, but that traffic is getting dropped somewhere because the connection is unsuccessful.
Is this the expected behavior of "Allow" action? Is there something I can do to make sure "allow" traffic actually gets through?
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Jan 29, 2013
I have a ASA 5520 which is intended to use as a VPN for clients using PDA, I think the PDA is a very old product that the VPN only support CHAP/ MS- CHAP, but seems it cannot connect the VPN, it will prompt "invalid username and password" (but in fact the username and password is valid when using PAP), below is the log i captured from the ASDM when the PDA is connecting the VPN. when i tried to connect it in windows PC, I also have the same issue if the VPN setting is using MS-CHAP, if I choose PAP, it can connect with no problem. But the PDA has no option of PAP. [code]
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Mar 25, 2011
I have a Pix 515, and a question about firewall rules/access lists.I have recently created a new VPN group, and IP Pool.I created a firewall rule that grants access via TCP to a specific IP address from this firewall. However, when I test the VPN from outside the company, I find I can get to whatever server I want to. There is no allow any/any. I do not think there is any other rule before it or after it that would give that kind of access as most of our rules are for specific IP's and protocols.
The only thing I could think of is that we are using the account management in the firewall to authenticate the users. I am giving the VPN users level 3 access.I will probably not post my config as it is my firewall config, and it would be against company policy.
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Dec 5, 2011
Is it possible to provision 3 different public IP addresses to the same DMZ IP (Web server) on an ASA running ver 8.2(4)? Unfortunately, the way the server was provisioned Static or Dynamic PAT will not work. I have read that ver 8.3 and up supports natively one-to-many NAT translations, but at this point the client is not ready for an upgrade. Is there anything else I could do to overcome this challenge?
Outside --------> DMZ
200.1.1.1------> 10.1.1.1
200.1.1.2------> 10.1.1.1
200.1.1.3------> 10.1.1.1
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Jun 24, 2011
I'm having some troubles with NAT, packets does not match nat rule (that i think it should) and is not choosing the right egress interface. So crypto map never starts
this is the relevant config:
interface Port-channel2.4
description Public TESA ADSL internet connection
vlan 7
[Code].....
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May 17, 2012
Boss wants a listing of the firewall rules only. What's a command I can run that will give me a listing of this?If I can get an output of firewall rules only, via GUI, that'll work too. It just needs to end up with a printout on a piece of paper telling me what the firewall is doing.
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Jul 5, 2012
I have a problem with firewall rules. If I set some rules for open communication and some for closed, so I cannot reorder from the end to begin.
Last rules are at the end of all. So I can only reorder in one pages.(I have about 33 rules = 3 pages of rules)
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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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Sep 26, 2011
I have a question about the new nat implementation in an ASA 8.4. when I perform a "show nat" I get the following result:
1 (outside) to (inside) source dynamic any NAT-SSL-VPN_172.30.100.250 destination static 00B_172.30.100.0_24 00B_172.30.100.0_24
translate_hits = 26, untranslate_hits = 0
2 (inside) to (outside) source static LAN-HOST_172.30.100.11_LNX01 WAN-HOST_84.199.44.2_32_LNX01 service TCP-80-HTTP TCP-80-HTTP
translate_hits = 0, untranslate_hits = 0
Is it possible to change the order of the nat rules without removing and reapplying the rule on position 1 ? (both rules have to stay in section 1)
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Nov 7, 2012
I have several working VPNs between ASAs 8.4 and 8.3The way this was set up is with cryptomaps that match whole subnets and ACL on the outside interface to permit from/to the RFC 1918 addresses.I notice that the hit count is zero on these rules and so I wonder if they are actually necessary or doing anything.If they are not where can an acl be applied to restrict the VPN traffic? Outbound on the inside interface?
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