Cisco Firewall :: ASA 5520 - Users Can't Access Through By Name
Mar 13, 2011
I just configure an ASA 5520, here is the config (the ip address of outside network if going to change from private direccion by reason security).
The problem that I have is the users can access to the web site through the public´s ip address but they do not can access through by name. We review all the config on the server DNS and with the command NSLOOKUP we can see that work fine. The client think that the asa is blocked the connnection.
[code]....
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Dec 13, 2012
Is it possible to deny VPN access to specific AD accounts?
Currently setup with 5520, LDAP authentication for VPN users.
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Jan 17, 2012
I am new at ASA 5520 and CSC module (version 6.3). I would like to know what configurations are possible for my network users if i use the CSC trend micro blocking using IP address or AD users, I know that i could select users/groups from the windows AD or select the IP addresses that i want to use for blocking or permit HTTP traffic (URL, etc).
My question is on the client side, how the CSC knows what AD users is the one that is requesting certain HTTP pages, or if i user a proxy server, i lose the IP/users options on the CSC??..or i could use authentication options on the proxy for example?.
I have been looking information about this but the manuals only explain the configuration options that i could configure on the CSC Trend Micro page, but it doesn't say which network environment i could use or need.
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Feb 10, 2010
I am having ASA firewall 5520. I want to block yahoo mail, gmail using regex for particular users only.
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Apr 5, 2011
I hava Cisco ASA 5520 with AIP-SSM module. I would like to have the below features with ASA installed in Transparent mode.
1. Traffic shapping per user
2. Traffic shapping per IP subnet
3. Traffic shapping per Application
Is it possible with ASA installed in Transparent mode?
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Jul 5, 2012
How many user accounts i can create to a Cisco ASA box? Say for example a Cisco ASA 5510 or Cisco ASA 5520?
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Apr 11, 2012
I have a 5520 ASA using wccp redirection to our IronPorts on the inside and everything works great for inside users. What I'm trying to do is get VPN users off split tunneling and to filter their traffic through the IronPorts as well but I can't figure out how. When they connect they seem to bypass the Ironport completely.
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Jul 1, 2011
We have ASA 5520 with CSC-SSM 20 and we want to block https traffic but when we are blocking https traffic http traffic going to block but user are able to open website.
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Feb 26, 2013
I have some problem with the ASA 5510 ver 7.0(6). My manager wants to keep this as backup. tried lots of things but still users not able to access internet nor can i ping anywhere.For example when i ping 4.2.2.2 i dont get any reply.The runing config is below for ur ref :
HQ-ASA-01# show running-config
: Saved
:
[Code]......
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Feb 24, 2011
I have a normal setup of ASA5505 (without security license) connected behind an internet router. From the ASA5505 console I can ping the Internet. However, users behind the Firewall on the internal LAN, cannot ping the Internet even though NATing is configured. The users can ping the Inside interface of the Firewall so there is no internal reachability problem. In addition, I noticed that the NAT inside access list is not having any hit counts at all when users are trying to reach the internet.
When i replace the ASA5505 with a router with NAT overload configuration on it, the setup works normally and users are able to browse the internet.
The ASA5505 configuration is shown below.
hostname Firewall
interface Ethernet0/0
description Connected To Internet Router
switchport access vlan 10
[Code].....
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Nov 7, 2012
Since we upgraded our ASA from 8.3 to 8.4(4), VPN users cannot access resources. This worked fine until the appliances were upgraded. We get the message:
[code]....
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Dec 9, 2011
I configured one ASA 5510 firewall with CSC-SSM-10 in one of my customer location.
Here i want configure my firewall to send email alerts to particular mail ID, if anybody any access my network from outside( Like VPN users).
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Dec 16, 2012
Pix 515e 6.3.4..A web server on our DMZ is exposed for external access.There is an "A" record (webserver.yyy) on a public DNS for this public IP.This works fine for external users. url..Now I have been asked to allowed our LAN user to access the same link and I CANNOT CREATE AN INTERNAL DNS RECORD TO TAKE CARE OF THIS, which means when our internal users access that link, the request goes out of OUTSIDE interface with a NAT overloaded address(111.111.111.2) that is in the same subnet as the URL is trying to resolve. Once it knows the IP address thru DNS resolution tries to comes back in thru the same Interface(OUTSIDE) to hit the web server in the DMZ and is not able to.
1- Where does the request from an internal user to hit url is dropped?
2- what can be done to allow this type of connectivity in the PIX 515e device?
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Apr 5, 2011
How to designate access-list for the remote access vpn users in order to let them access specific subnet or host,asa 5510 and acs is in the picture
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Jul 26, 2012
I have an auditor wanting a screenshot of all users that have acces to configure our firewall, I am unfamiliar with 5.1. Is there a way of running such a report on a paticular device?
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Nov 28, 2011
I have a issue that i am at a loss as how to solve it. I have an ASA 5505 as my firewall. I have users from other companies who visit from time to time and are unable to use their outlook email to send messages. They can however receive messages without a problem. I also have a situation where users who use windows live to access gmail are unable to send messages.
I have narrowed it down to the fact that these uses are using ssl/tls to send the mails. I did some research and found out about the inspect esmtp setting in the ASA. I have disabled it and i still have to problem. I have also removed all outbound deny statements and still no luck.
Of note is that i can send emails without attachments. They take a long time to go out ( from minutes to hours) but eventually they do. Emails with attachments of even 10k do not go at all.
I was running image 8.2.3 and i downgraded to 8.0.5...still did not work...i upgraded to 8.4.3...still did not work. I am now back at 8.2.3.
My Firewall config is attached. I am at my wits end as to what else to try. The company has not renewed support for the device so i am on my own here!
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Oct 4, 2012
I have an ASA 5520 in my company which does all our NAT and Firewall access control. Currently there is a rule in place to allow an incoming connection on port 2222 from a specific ip address to allow access to a web app our developers created. This is a test before the web app is released live. Now the web app can communicate with the specific address and port but the incoming connection on port 2222 isn't getting through. Everything looks great in the firewall but how can I log any hits this ACL takes to identify any potential problems?
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May 6, 2010
I'm using a Cisco ASA 5520 with IOS 8.2.2. We have many remote users using the Cisco VPN client, but I have been asked can we logout idle users as we do hit our license limit and some users stay conenct for days.
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Dec 13, 2012
How can I access my webserver (on my private LAN) from the internet? INTERNET------------(53.X.X.1 )ASA(192.X.X.X)DMZ-----------(192.X.X.80)HTTP SERVER. I can ping my public address on the ASA outside interface 53.X.X.1 form the internet, but I'm not sure how to do this. I tried to NAT, but I'm failing.
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Mar 13, 2012
I have a cisco asa 5520 ios 8.2. This is my configuration [code] But i can not access from DMZ to INSIDE.
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Sep 13, 2012
We are using Any connect vpn client (v2.5.3055) to an ASA 5520 (v8.4) in a development environment. We use our corporate Radius server to authenticate users. We have certain users which need have the same IP address every time they lo gin. As it is configured now, the IP addresses are assigned sequentially from the pool. Is there a way to allow certain users to get the same IP address each time they log on?
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Dec 16, 2010
I'm trying to set up Windows Server UAG for Direct Access in a Testlab. The UAG Server has two network nics. One in my Testdomain (internal) and the other one in a DMZ of our Cisco ASA (external).Our ASA dmz has subnet 192.168.3.x but UAG Direct Access needs public ip adresses.Is there documentation how to configure an ASA 5520 Firewall so i can use my Windows UAG Server with Direct Access?
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Mar 11, 2013
We have an ASA 5520 in HA. (version 8.X upgraded to 9.1 (1))We used Wizzard to configure VPN clientless and portal. Also, configured manually we have the same issue: We can access to the portal using IP address of Lan interface but not with outsides (2 ISP). The clientless VPN is enable on the public interface and no packets rejected in logs.We try to modify the Crypto map created by default to replace "any" to "any" by "any" to "our public IP" (We see that is recommended by Cisco) It works for 10 minutes.(strange..) but after 10 minutes the active member crashs.. only a reboot with previous configuration was good.We try to investigate but each time we modify Crypto maps, the firewall is going bad.
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Mar 6, 2012
I have been configuring a cisco ASA 5520, everything is working fine but when i create an ACL:
-access-list OUT extended permit ip 172.16.x.x 255.255.255.0 any
-access-group OUT out interface outside
i added ports like www or 443 and it is not working to Internet access a router is before to my firewall connected to my headquater, i can see my private networks but i cannot able to reach Internet access,
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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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Dec 18, 2011
I have successfully been able to allow outbound access from inbound hosts on the appliance; however, I have only one outbound IP address and had to configure outbound access using static PAT. What I need to do is to configure access to certain inbound hosts from outside. What's wrong with my running config? Below are the commands that I believe need to be changed from the configuration. [code]
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Jan 17, 2013
I've got what is probably a very basic question - but i can't figure it out.I have: Internet (ADSL) -> 2851 (ADSL wic) -> 5520 -> internal LAN (192.168.1.x/24)
The asa has just replaced a Checkpoint firewall.I've set up the ASA to the point where all hosts on the internal LAN have internet access (using a dynamic PAT on that network). This all works well.
The problem i have is i am trying to allow access from the internet to an internal host on a specifc TCP port (as i had done on the Checkpoint) but i'm getting:
Asymmetric NAT rules matched for forward and reverse flows; Connection for tcp src outside:111.111.111.11/52135 dst inside:192.168.1.252/5555 denied due to NAT reverse path failure
From what i have read i need to add a NAT exemption for this particular use case - to avoid the dynamic NAT i have setup, but im not sure how to do so.I'm running 9.1 on the ASA, no VPNs yet. Just this basic setup.
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Sep 23, 2012
I am new in ASA, I have the DMZ (10.1.1.0/24) configured on ASA 5520 and I achieve the reach Internet from DMZ (10.1.1.0/24), but now need reach DMZ from inside (172.16.12.0/24) and inside (172.16.12.0/24) from DMZ (10.1.1.0/24), in other words round trip.
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Oct 17, 2011
I have a site to site VPN between SiteA to SiteB which is working fine. SiteA has an ASA5520 and SiteB Pix501. The ASA5520 is running version 804 with split tunneling. Users connect to SiteA using remote access VPN. Is it possible to setup SiteA ASA5520 so that when users connect to SiteA they can access servers located on SiteB through the tunnel? I know i can setup the Pix501 for remote access VPN but it is located in another country and i don't want to take a chance just incase i lose connectivity.
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Sep 1, 2011
I have 2 ASA 5520 (v. 8.21) in a active/standby fail over configuration.
VPN users are autenticated against the MS-AD through LDAP. For the most part this works well. Occasionally I'm having problems with new users in the AD. If I run a test I keep getting "User was not found". This can happen days after the account was created still. In some cases it never seems to work. The accounts I create exists on the same OU level as all the other accounts that are working.
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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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Aug 23, 2011
I am using ASA 5520 with 8.2.4 IOS. I'm new to ASA/Firewall. I need to do access webserver from outside network.From Laptop (192.168.2.51), If I connect to url... it should open page from 10.10.10.50.I also need to ssh to webserver from laptop. If I ssh to 192.168.2.50 from laptop, it should connect to 10. 10. 10.50. [code]I can't get to webserver from outside network, so now, I connected laptop to directly ASA 5520 outside port with crossover cable.ASA Inside port connects to L3 switch. Webserver also connects to L3 switch. But still doesn't work.
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Jul 3, 2011
After upgrading to 8.4(2) and ASDM 6.4(5) I seem to have an extra access rule duplicating an existing rule, this is only visable through the ASDM. When using the CLI you can't see this duplicate rule.
I therfore get the following warning everytime I make a config change using the ASDM [code] If I delete this rule it returns everytime I launch the ASDM!
I also have extra config under Firewall>Configuration>Public Servers that I didn't have before. If I delete it, again it returns.
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