Cisco Firewall :: ACL With Security Levels In ASA 5520
May 6, 2013
I have a DMZ (50) from where I need to allow some protocols to inside zone (level 0). I am doing that with ACL, but after having done that the implicit security level rule to lower level (outsite level 0) is not working anymore, I guess by the implicity deny after the acl. I'd need allow traffic to the outside zone from DMZ, as well as the inspect traffic from the inside one. Is there anyway to have both ACL and Security levels?
If not, what do I need to do to just allow some protocols going to higher level and leave the higher-to-lower traffic inspected allowed, same schema as we have with security levels.
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Jul 7, 2011
different levels of security in networks
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May 25, 2011
*By default, the interface with higher security level can access "interfaces" with lower security level*By default , lower security level interface has no access to higher security level interface (access list needed to permit access
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May 29, 2011
How can I set up a network with different security levels to different groups?
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Mar 7, 2011
Do I need the security plus license to do HA with two 5520's?I was told by our purchasing department that the 5520 was supposed to be able to do HA out of the box, but when I look I see only the VPN + license. Does that mean I can download the security plus license? Or do I even need it on the 5520.
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Jun 17, 2012
I have an ASA 5520 running 8.0(3) with two Subinterfaces configured like this:
=================================
interface GigabitEthernet0/1
nameif inside
security-level 100
no ip address
!
interface GigabitEthernet0/1.72
description VLAN 72
[code]....
(notice that they have the same security-level)I need to control the traffic between them with ACLs so I in ASDM unchecked "enable traffic between two or more interfaces with same security level" and "enable traffic between two or more hosts connected to the same interface"Now I cannot ping from one Vlan to the other, as expected,,, but I tried many different ACLs and I cannot ping or telnet to the other side from either one.
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Nov 10, 2011
On a Cisco ASA 5520. I have 2 interfaces that are the same security level. I need hosts on 1 of these interfaces to be able to get to a specific IP and port on the other but I DON'T want to blanket enable 'same-security-traffic permit inter-interface" I have added an ACL inbound on the interface allowing the desired traffic and inbound on the other for return traffic and it simply doesn't work.
interface GigabitEthernet0/3.175
vlan 175
nameif Test175
security-level 30
ip address 172.30.175.1 255.255.255.0
[code]....
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Mar 27, 2013
I have issue with traffic passing between same security level interfaces. I want to control traffic between same security level interfaces with ACL. Even no restriction, traffic does not go through. [code]
I tried to access server from THREE network to web server at FOUR network I have no response. In sh xlate output it shows "PAT Global 10.124.104.254 (28889) Local 10.124.103.1(2922) " I am not sure what else should I do. I add both same-security-level commands and it is the same.
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Mar 27, 2011
Ive got a virtualised firewall running 3 security contexts in routed mode. What am experiencing is that i cannot connect to an OUTSIDE host through the security contexts. From the firewall itself i cannot ping the directly attached host on the OUTSIDE interface but i can ping the directly attached host on the INSIDE interface. When i reload the firewall box, the first ping to the OUTSIDE host would be successful but subsequent pings fail and thus total connectivity is lost.
I even tried upgrading to ASA version 8.4(1) but still the same.
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Jun 19, 2011
Is it possible to configure the ASA to:
log syslog informational to one host
and
log syslog critical to a different host
It seems that the ASA allows you to only specify 1 logging severity level for all syslog hosts..
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Jul 14, 2011
I have FWSM's in Cat 6513's. I have a need to be able to session from the switch to the FWSM by using default account (not local user), at privilege level 15 I further have a need to allow a user read only access by ssh'n into the FWSM...
I believe I need to setup a local user, at, say privilege level 5, assign the show command only to privilege level 5, then set the authorization command for that user. So, i think my command sets are as follows to accomplish this:
username <username> password <pw> priv 5
priv command level 5 mode exec command show
aaa auth ssh console LOCAL
aaa auth enable console LOCAL
aaa authorization command LOCAL
I think, that this will allow the user at privilege 5 to run only the show command and only by SSH to the FWSM while allow the priv 15 level default login to continue to function properly.
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Oct 16, 2012
What's the difference between VPN Plus license and Security Plus license. I have new 5520 shipped with VPN Plus license.Also does it require a seperate license for Anyconnect for Mobile and AnyConnect Essentials.
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Jan 17, 2013
I have a project to upgrade an ASA 5520 to 9.1.x, then add another ASA for failover. What will be the correct way ?
I had the 2 Gb memory.
I have rewritten all nat statements (during my other 8.2 to 8.3 or 8.4 upgrade project, the nat conversion was catastrophic, so I rewrite all now).
Can I upgrade directly to v9 ? Or 8.2 -> 8.4 -> 9.1 ?
I think to :
- inject actual config in the new ASA in 8.2
- remove nat statement
- upgrade to 8.4
- configure new nat
- upgrade to 9
- connect the new ASA to the network and deconnect the other ASA
- test
- upgrade old ASA to 8.4 or 9 directly ?
- configure failover
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Jun 20, 2011
I have a SSL certificate from a third party that is showing under the Identity in ADSM, howerver the audit scan of the firewall shows that the SSL Certificate Signed with an unknown certification Authority. I have installed the Intermediate Primary and Secondary Certificate from the third party under the CA Certificate of the ADSM however when I verify the SSL certificate it still shows as self-signed. What other steps do I miss. I have attached some screenshots.
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Feb 1, 2007
I'm trying to establish a site to site ipsec tunnel between an ASA 5520 and a Nortel Connectivity box. Despite trying a number of different transform sets and IKE setups it keeps failing at phase 1 with:
Information Exchange processing failed
Received an UN-encrypted INVALID_ID_INFO notify message dropping.
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Sep 22, 2011
We have a ASA 5520 which is configured to send log files to an ftp server. It has been doing that until recently I found out that it stopped sending the logs on August 11. I can't remember what I have changed in the ASA config to make the ftp stop. I changed the ftp config to another server but it won't upload any log file.
What can I do to make the ASA save the log buffer to the ftp server again?
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Mar 18, 2011
I have a customer with an ASA5510. We have an SSL VPN (tunnel-based, or "SVC") that we use for remote access. That works great.They want to be able to use this same functionality, but add users who will not have the full access that the current SSL VPN users have. So in other words we currently have a small group of users who get full access to the LAN. Then they want to have a second group of users who will only have access to certain nodes.I'm wondering if there's some way to do this using LDAP between the firewall and the Radius server? The user gets put in a different tunnel group depending on what the FW learns from the server?We only have the Anyconnect Essentials license, so unfortunately we can't do a clientless SSL VPN, which otherwise might work well here.
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Oct 7, 2010
I recently upgraded our WLC 4404 to release 7.0.98.0. The process was very smooth with no issues. The controller manages access points in two buildings. Prior to the upgrade the access points were maintaining high TX power levels...typically between 1 and 3. After the upgrade the power levels all droped to 6 and 8. I have confirmed that the correct external antenas have been set for each access point. I have not done a site survey to see if the lower power levels are acceptable. But the environment has been very consistent for the past year with regards to TX power levels. For the time being I have manually set a power level of 2 to prevent any service outages. Is there any explanation as to why the power levels have changed so drastically?
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Apr 17, 2011
We have two multilayer switches and only one ASA 5520. I'd like to connect ASA in the way described on the picture: each redundant interface includes two physical ones, which are connected to different switches
My question is what kind of link it is necessary to have between switches to make this idea work? I'd have subinterfaces like Re1.100, Re2.200 and so on for my traffic.
I understand that correct design approach is to have two redundant firewalls with failover but we cannot purchase the second one yet.
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Dec 6, 2012
I recently configured WCCP with a Sophos Web Filter on my network it works good but the problem I am having is I have two 5520s so I am directing the device to look at 2 different IP addresses and since the devices are in an Active/Passive failover. The problem is because the second device is in a passive failover it is not responding which is throwing connection errors to my Sophos device. I know you can have a single management connection for the ASA's but is there a way to have a single IP for the ASAs for the WCCP?
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Mar 10, 2013
I'm trying to make a setup on my Cisco 881 router, but I'm having some trouble.I've managed to configure logging in with a Public-Private key pair over SSH, but it's also still possible to log in over SSH with just a username and password. I'd like to prevent this, if possible. I imagine I might have manually configured this to be allowed at some point, but I can't quite figure out how I did this, as no matter what I've tried to remove, it keeps allowing this option. I still need to be able to log in with a username, because I want users to have different privileges.
Once I've logged in using the Public-Private key, I don't automatically go into privilege mode, even though the user is configured with a privilege level. I'd like to configure that users that I've configured to use a certain privilege mode, automatically go into privilege mode without a password prompt. I know it did this before I started using the Public-Private key (or before I used AAA, which was configured around the same time), so I wondered if it's possible to do this still.
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Nov 2, 2012
We were using ASA-5520-K9 with ASA-SSM-AIP-20-K9 but recently found some hardware problem in our running ASA. Now cisco want to replace with ASA-5520-K8.
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Jun 7, 2012
I've got tons of fibre in my network. However, tbh, my knowledge about correct light levels isn't great. I generally wait until my router complains about a light level before I do anything. I would like to set up SNMP monitoring for light levels, but I need some kind of baseline.Anyone with extensive fibre experience? What light levels should I be looking at for both multimode and singlemode fibre?
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Aug 12, 2011
I purchased a Epson Artisan 835, which I am runnung wireless. When I try to check the ink levels from my laptop they are all greyed out. Epson tech said the Dir-655 was the problem and that I needed to get the router to give permission for the ink levels to go through.
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Dec 16, 2011
I am having some challenges on my DMZ network.My servers and Cisco Switches in the DMZ are picking the mac address of the Firewall(Cisco ASA).I have put some static arp entries on the Firewall and switches but the servers and users on the DMZ are still receiving the mac address of the Firewall.How can i stop the Firewall from changing the mac addresses of the devices on the network.My ASA is a 5520 and i have 2960Switches.
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Jun 22, 2008
I have a ASA 5520 upon which I need to build a WebVPN for the company urls - webmail, intranet portals etc. There will be 2 groups -
a. Confidential Access - For senior management.
b. Public Access - For employee access.
RSA Token & LDAP auth would be used for access to the WebVPN. However, I am unclear on certain aspect.How do I isolate the 2 groups? I mean only Senior management should be able to view & access the first set of links while employees see and access the other set of links only.Both the groups will be available to all users loggin on to the WebVPN. Since the authentication mechanism - LDAP - is the same, anyone would be able to access the groups and in turn, urls.
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Dec 9, 2010
I was unable to access my ASA 5520 using HTTP/HTTPS even on the management interface. I had upgrade the ASA IOS to asa832-k8.bin and ASDM to asdm-634-53.bin. But, the issue still the same.
My browser show the error message as attach image.
PGA-Firewall-02# sh run: Saved:ASA Version 8.3(2)!hostname PGA-Firewall-02enable password 8Ry2YjIyt7RRXU24 encryptedpasswd 2KFQnbNIdI.2KYOU encryptednames!interface GigabitEthernet0/0 nameif public security-level 0 ip
[Code]....
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Jun 6, 2012
I've just completed a port security project at a site on numerous Cisco switches and all works well, however they have 2 Nortel 5520 switches (which I left until the end) which they would like to lock down. I have logged a message on the Nortel forums and I have heard nothing for days. I just need to lock 2 ports down to the Mac address of 2 computers stopping any other computer being plugged in.
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Mar 17, 2011
I´m trying to configure a subinterface named Inside with vlan 1 but the interface stops work with this vlan.My switch is a Cisco and use the lan with vlan 1 too.If I change de vlan for other i.e vlan13 works fine. And all others vlans works fine too.Is there a problem to use the vlan 1?
My configuration is:
Cisco ASA:
interface gig0/3
no ip address
no security
no nameif
Interface gig0/3.1
vlan 1
nameif Inside
Securirity-level 100
ip address 10.x.y.x 255.255.224.0
The giga port of the swtich is configure to trunk model.
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Jun 16, 2012
how many remote user connect using Cisco VPN client on Cisco Firewall ASA5520-BUN-K9? Already i read VPN Client FAQ But their have no information about user limitation.
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Oct 4, 2011
In CLI we have users log in at priv 1 and use "enable" to increase privilege and do configurations. This allows "accounting" of command history. On the AIR-AP1121G-A-K9 (12.3(8)JED1) I cannot duplicate this for http login.
I can log in as a user at priv 1. When I try to go to a privileged link like "Security" I get prompted for a second login/pw. Nothing works here unless I have a second user defined at priv 15 and enter that login/pw. The problem is - that login/pw can be used to log in via http in the first place which bypasses accounting of the actual user. It also allows login to the CLI at priv 15 which I cannot permit.
username test1 secret 5 abcdxxx
username test2 privilege 15 secret 5 efghxxx
enable secret 5 ijklxxx(code)
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Apr 23, 2012
We had a core switch(4503) in our environment and recently we tried to enable syslog in the switch. But the syslog server doesnt receives all the configured level messages from the switch. Following is the only message getting in syslog server after the configuration change in switch.
%SYS-5-CONFIG_I: Configured from console by CWLMS onvty1
(No Traffic related messages like acl deny traffic, spanning tree events etc are getting to syslog server as well as log buffer of the switch)
Following are the logging configuration for the core switch
logging monitor informational
logging facility syslog
logging source-interface Vlan44
[Code]....
1) Is there any more configurations required for getting all traffic related messages, (i mean all possible messages - upto level 7 - debugging)?
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Feb 27, 2013
I'd like to see some REAL LIFE comparisons of ASA firewall throughput (a bit like this one for ISR G2 Routers - [URL].
The reason I ask is that I recently upgraded a firewall from an ASA5505 to an ASA5520 on a small network where the only outside connectivity was a single 10meg Internet circuit with an IPSEC VPN (not landed on the firewall but on a router) to another site.
When I swapped out the firewall the users noticed a big improvement. The firewall is not doing anything out of the ordinary - no IPS or VPN, just standard state full inspection.
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