Cisco Firewall :: 5520 / Does ASA Have Open SSL

Mar 19, 2013

On one of our firewalls we hosting a application/service which impacts clients and we recently conducted a Pen test, the external company doing the Pen test have advised us that there is a vulnerability relating to OpenSSL. We have checked the server and there is no OpenSSL installed so the only place where it could be picking this up is on the ASA, is this correct?Here is the report from the company that conducted the test:4.3 Network Security An outdated OpenSSL package was identified that was vulnerable to a heap corruption bug that may be exploited by an attacker to acquire command execution on the host, or to create denial of service conditions. Table 7   provides an overview of the risk identified per network assessment category,   along with recommendations for resolving the issues identified. Category

Risk
Summary
Recommendations
Patch Management
High

The OpenSSL package installed   on one host was identified as being outdated and subject to a heap corruption   bug. Update the outdated /  vulnerable OpenSSL package to the latest stable version. We have an ASA5520 and running the following version: Cisco Adaptive Security Appliance Software Version 8.2(5)2 How do we check the OpenSSL on the ASA and secondly do we need to update the ASA software version ?

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Cisco Firewall :: Defaults Ports Open On ASA 5520

Jul 10, 2012

what are default ports are open on asa 5520 from outside interface  (Zero level Security ) to inside interface  (Security level 100)

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Cisco Firewall :: ASA 5520 To Block Https Traffic But Users Are Able To Open Website

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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Cisco Firewall :: Open A Port In ASA 5510 Firewall Using ASDM?

Oct 20, 2012

I would just like to to open UDP port 123 in the ASA 5510 Firewall so that our Primary Domain Controller could use this port to sync time with an external time source. We have already added an access rule for this port under the firewall configuration in ASDM 6.4 and this port was also allowed in the inbound and outbound rule of the PDC's Firewall but it seems that it was still blocked.

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Cisco Firewall :: Open Ports On Firewall ASA 5510

Apr 18, 2012

We have setup new ip camera system and as per our vendor to access the camera from outside we need to open,TCP ports and in firewall and forward to our camera server.
 
Let say our public ip address is 207.114.111.22 and our local ip address for the camera is 11.11.1.30. We have cisco asa 5510.

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Cisco Firewall :: Different Between ASA-5520-K9 And ASA-5520-K8

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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Cisco Firewall :: Upgrade From 5505 To 5520 On Network - ASA Firewall Throughput

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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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 Identity Based Firewall Doesn't Work Using Citric Published

Jul 26, 2012

We are using the newest release of AD Agent (1.0.0.32.1, built 598). The ASA Firewalls 5520 are having the software release 8.4(3)8 installed.When somebody tries to connect thru the Identity based firewalls from a citrix published desktop environment (PDI) the connection is not possible. Checking the ip-of-user mapping on the firewalls (show user-identity ip-of-user USERNAME) mostly doesn't show the mapping of the USERNAME and the PDI the user is logged in. The user-of-ip mapping of the PDIs IP-address shows mostly other users, which then are used to authenticate the acces thru the firewalls.
 
What is interesting, that on the AD Agent using "adacfg.exe cache list | find /i "USERNAME"" i can't see the PDIs IP-address neither because it is mapped to another user.Is Citrix Published Desktop environment supported to connect thru Identity based Firewalls? How AD Agent, Domain Controllers and Firewalls are working together? On the firewalls with "show user-identity ad-agent we see, the following:
 
-Authentication Port: udp/1645
-Accounting Port: udp/1646
-ASA Listening Port: udp/3799
 
Why Cisco does use 1645 and 1646 and not 1812 and 1813?The Listening Port is used for what purpose? we tried the AD Agent modes full- download and on-demand with the same effect.

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Cisco Firewall :: Launch LAND Attack Against Firewall ASA 5520

Apr 15, 2013

I try to launch a LAND Attack against my firewall ASA 5520. Everything will work fine. But why, I think it should not work. I use a little tool where I can user a spoofed address, with a cluster shell and attack the firewall interface with the source of 127.0.0.1 ore the ip address of the interface as the source and destination. Then I get a cpu load of 89% with only two host. With IP tables I can use kernel processes to prevent this. But I don´t find anything for ASA.

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Cisco Firewall :: 5520 Single Firewall With 2 Core Switches

Jan 4, 2012

Two different WAN links get connected to the firewall via two routers.(Different ip subnets).I need to get this two wan streams seperatly to the core switches.Core switches sits.Active/Stanby senario. If the Active core goes down Stndby Core will have take over the traffic. My design is correct ,if not what do i need to change. ASA is 5520.

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Cisco Firewall :: ASA 5520 - NTP Server For Firewall Clock Setting

May 22, 2013

I have ASA 5520 installed. I want to use ntp server for firewall clock setting. I found one open-access ntp server (stratum 2) in Los Angeles:
 
[URL] 209.151.225.100
  
Can I use the following command to set ntp server?
 
ntp server 209.151.225.100 source outside.

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Cisco Firewall :: Make Communication Between 2 Vlans On Firewall 5520 ASA 8.2

Jan 1, 2012

communication between 2 vlans.i have 2 vlans
 
Vlan 100
ip add 1.1.1.1
!
!
!
Vlan 200
ip add    2.2.2.2 
 
i want to make communication between 2 vlans on firewall 5520 ASA 8.2.

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Cisco Firewall :: Port TCP/7070 And TCP/554 Always Open On ASA?

Feb 26, 2011

i just ran a NMAP scan on the outside interface of a ASA 5520. It seems that the TCP Ports 7070 and 554 are open on all NAT interfaces and the outside interface of the firewall. I tried telnet on port 554 and 7070 and got connected.

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Cisco Firewall :: Open A Port On 1811?

Sep 8, 2011

This is problably a stupid question but how do I open a prot on a cisco 1811? I have a cisco 1811 and a computer that has VNC installed on it. I want to be able to access that computer from out side the network using the external ip address and port 5950. People outside the network will be able to open vnc viewer and type in *external ip address*:5950 and it will be directed to the computer with a static internal ip address of 10.11.101.10. What commands do I use to do this?

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Cisco Firewall :: ASA 5510 How To Open Port 25

Feb 14, 2012

We have an ASA5510 that we need to open port 25 to allow mail traffic to our internal Exchange server.We have 2 interfaces defined... one named Internal on eth0/3 ip 10.1.x.x and one named Internet on eth 0/0 ip 96.56.x.x.We followed the instructions in ASDM for allowing access to a public server but confusion over definitions have stopped us.ASDM asks for the internal interface and the internal server IP... no problem there because the internal interface and server have two different IP addresses.  The Internal interface is eth 0/3 (10.1.1.1) and the server is 10.1.1.2.
 
However, when we get to the External interface (eth 0/1) there is only a single IP address 96.56.x.x but the ASDM asks for an Interface IP and the IP people would use to get to the mail server from the outside.  Inasmuch as we have only 1 external IP address (which connects to our upstream Cisco router which in turn connects to the ISP modem) we used the same IP for both but the ASDM returns an error indicating they must be different.
 
Apparently we do not have a clear understanding of what the ASDM is actually asking for.  When the ASDM asks for the external interface we assumed it was asking for the named value we gave the interface (which is Internet).  The named value "Internet" has an ip associated with it 96.56.x.x.  But when the ASDM asks for the ip people on the outside would use to get to the mail server (we created a named value called "mail server" and gave it the same ip address as the external named value.  This duplication of ip address causes the ASDM to return the error stating that external Interface to be used and the external ip to be used cannot be the same.Have we made an error when we assumed that when the ASDM asked for the external interface it meant the ip of the external interface or was it asking for the eth number (as in eth 0/0) for the interface? 

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Cisco Firewall :: Open Ports On ASA 5510

Dec 1, 2011

I just finished implementing a VOIP install and I am trying to setup some softphones and in order to allow the softphones to work I need to open some specific ports for outbound.  I am not a Cisco guy, I am a Windows Administrator that also has to maintain my Cisco infrastructure. 

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Cisco Firewall :: ASA 5510 - Cannot Open ASDM

Mar 20, 2011

We are running a Cisco ASA 5510 in our district.  We have been using it for about a year and a half after an upgrade from our PIX.  I have been using the CLI to manage it but I wanted to start using the ASDM.  I installed the ASDM Launcher last Friday but could not access it.  I have enable the http server on the ASA, assigned an IP to the interface, and granted my machine's IP inside access.  On Friday I was unable to launch the ASDM.  I then downgraded Java.  I came in this morning and was able to connect through the launcher.  However I could not make any changes as it would give me an error message and often popped up with "lost connection" type messages.  I then closed the ASDM but could not reconnect after that.  When I try to connect through the launcher I receive the message "Unable to launch ASDM from 172.16.5.1: Connection reset".  When I try https://172.16.5.1/admin/ from a browser I simply receive "page cannot be displayed".  I'm not sure why I can't connect. 

[Code] ........

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Cisco Firewall :: ASA 5505 Open Ports For DVR?

May 9, 2013

I have an ASA 5505 with ASA version 7.2(2) and ASDM version 5.2(2) and I am attempting to open ports 88 and 5445 and forward them to the IP address of my DVR.  This is all new for me.  I see several posts for other software version to do this same thing but my version appears to be older?

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Cisco Firewall :: 5900 Can't Open Port 20 And 549

Jun 30, 2012

I have a static IP address over 100Mbit fiber. I've installed a Mac Mini as a webserver and opened the ports 80, 443 and 5900 and a few others for minor services. Everything works fine: the http server (and https as well) is up and pepole can reach it from wan.Yesterday I tried to setup the FTP service with less success. Into the ACCESS RULES I enabled the FTP service and, as a result the port 21 opened up.

But if I connect via Cyberduck to the server I can navigate through the folders but I can't download anything. So I tryed to open up the port 20 for data transfer with no result. Same issue when I tryed to setup the AFP service to mount remotely server volumes: port 548 opened up but no success with port 549.

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Cisco Firewall :: ASA 5520 - Corporate Firewall Crash

Feb 27, 2011

I have a serious problem with my corporate firewall, witch is an ASA 5520, fv 8.3, with 8 +1 interfaces. It suddenly started to crash every 10/20 minutes and rebooting alone.
 
First of all I checked system resources witch are in a very low usage state. I also checked interfaces errors, but nothing strange come out o from error counters analysis. I tried disabling logging and all the service policy rules configured, but nothing changed.
 
Nothing changed and firewall continue restarting by itself.
 
Last logs I received before crash were:
 
%ASA-4-711004: Task ran for 35 m sec, Process = Dispatch Unit, PC = 84a619e, Call stack =
%ASA-4-711004: Task ran for 35 m sec, Process = Dispatch Unit, PC = 84a619e, Call stack =   0x084A619E  0x084A6512  0x084A70E1  0x084A7987  0x084A7AAA  0x08558B9B  0x08558E8A  0x083D3518  0x083CA145  0x080659D1  0x089196D9  0x08919790  0x089FF711  0x08A27468

Here the sh crash info command on module 0, after last reboot:
[Code] ......

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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 network.now 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 :: ASA 5520 - NAT And Firewall Access Control

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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Cisco Firewall :: ASA 5520 - VPN Traffic Is Getting Dropped Through Firewall

Apr 8, 2011

Our Local Network is behind the CISCO ASA Firewall.Whenever we are accessing to Client VPN server,it is getting connected but after few Minutes (May be 5/10/30 Min),the sessions are terminating. The same traffic through PIX is no issue , only with ASA Firewall. See the following Error and request you give the possible root cause for this.
 
2011-04-09 16:15:09    Local4.Info    172.16.1.68    %ASA-6-302016: Tear down UDP connection 87447908 for OUTSIDE:68.22.26.66/4500 to inside:172.16.9.10/4410 duration 0:27:49 bytes 18653

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Cisco Firewall :: 5520 - Firewall Behind Two GLBP Routers

May 29, 2012

I have problem in the configuration of Cisco ASA 5520, IOS version 8.4. The connection is as follows: LAN network--> Firewall --> Routers with GLBP with virtual ip address. the clients can not ping the virtual interface of the GLBP group, but I can ping it from the firewall, and I can ping the clients from the firewall, I checked the packet tracer it gives :
 
Phase: 7
Type: NAT
Subtype:
Result: DROP
Config:
nat (inside10,outside) source dynamic LAN interface
Additional Information:(code)

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How To Test Whether Port Is Open On Firewall

Nov 23, 2011

I travel a lot and use wifi in a lot of different places (hotels, airports, etc.)My apps don't always work and I suspect that in some instances the broadband provider is blocking some of the ports I need.I don't need a port scanner like NMAP since that scans a target IP for listening ports.What I need is a way to figure out whether some firewall between my PC and the Internet is blocking specific UDP or TCP port ranges.

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Cisco Firewall :: 5500 ADSM 6.3 Can't Open Dialogue Box

Jan 3, 2012

i'm having issues with ASDM 6.3 on my ASA 5500.When i try to add a policy under firewall --> service policy rules (Add Service Policy Rule Wizard - Rule Actions), i'm not able to add a netflow policy as I'm not presented with a dialogue box after I press "add".i've tried this from multiple computers mac os and windows.

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Cisco Firewall :: Open Port 5000 And 5001 On PIX 501?

Mar 13, 2011

I need to open ports 5000 and 5001 on my Cisco PIX 501 to enable some users to be able to connect to our CCTV from outside, how should I open these 2 ports?

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Cisco Firewall :: ASA 5501 - Need To Open Required Ports

Nov 27, 2011

I have an ASA 5501 running latest code. Per the article at [URL], I need to open the below ports. I have 5 Xboxes (when people come over) and they all have a static IP. My network is 192.168.0.x and is a /24 network.Xbox LIVE requires the following ports to be open: Port 88 (UDP)Port 3074 (UDP and TCP)Port 53 (UDP and TCP)Port 80 (TCP)port 1863 (UDP and TCP) (Kinnect)  I defined the various network ports as a service and then created 5 hosts called xbox1, 2, etc with a static IP. I dont have access from the command line (forgot telnet and ssh passwords) , so from the gui, what do I do next?

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Cisco Firewall :: Open Ports On ASA 5505 For VoIP?

May 5, 2013

I'm working on setting up a PBX server in our office, and I'm having trouble getting a port opened for SIP on my ASA 5505.I created static NAT rule for SIP traffic from internal server to the outside IP address.I created access rules on outside interface to forward port 5060 to internal PBX server (192.168.1.8)I also disabled sip packet inspection on the ASA.I'm still receiving a message from the PBX that the firewall is configured incorrectly. 
 
[code]....

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Cisco Firewall :: Open Port 52199 On ASA 5505?

Mar 11, 2011

I am trying to open port 52199 on my ASA 5505 I have gone to firewall, access rules and then add tcpip.Not sure if that is the correct place but cannot get it to work?

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Cisco Firewall :: Open Port On ASA5510 (version 8.3)?

Jan 29, 2013

I configured ASA to open port 21, 3389, 5900 (outside access in) but when i check port just success : 21 and 3389, Error: 5900 If i configured with only one port 5900 or 3389, is't ok, i don't understand what 's the problem?
  
ASA5510>       
 ASA5510> ena           
 Password: ***********************                                
 ASA5510# show run                
 : Saved      

[code]....

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Cisco Firewall :: Email Port Open For ASA 5505?

Jan 16, 2012

when I want to let email to come through the ASA5505 from outside to DMZ and Inside network, are the below command lines correct and good enough?
 
access-list  outside_DMZ extended permit tcp outside-network-ip dmz-network-ip eq imap4
access-list outside_DMZ extended permit tcp outside-network-ip dmz-network-ip eq pop3
access-list outside_DMZ extended permit tcp outside-network-ip dmz-network-ip eq smtp
access-list outside_inside extended permit tcp outside-network-ip inside-network-ip eq imap4
access-list outside_inside extended permit tcp outside-network-ip inside-network-ip eq pop3

[code]....
 
Are there any other TCP ports want to be allowed and other command lines need to be added?

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