How to determine if ASA is blocking port or not?

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  Joel S
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  Visit our Microsoft answers feedback Forum and let us know what you think.

• How can I stop the firewall blocking ports of gaming?

  Original title: port blocking of firewall, that can not unlock & failure audit

  I had a very annoying problem with my ports lately. I don't think I did something to change my settings, but I had a little virus at the time, it began to happen, I get removed (at least for the most part...)

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  Hello

  Thanks for posting the question in the Microsoft Community forums.

  I would recommend posting your query in the TechNet Forums. The community of IT professionals in the following TechNet forum will be able to help you the best.

  http://social.technet.Microsoft.com/forums/en/category/w7itpro/

  In the future, you face problems related to Windows, if you post the question on this forum.

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• Internet service provider blocks Port 80 # & 1024

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• How many interfaces in asa 5510

  can someone pls tell me how many interfaces in asa 5510.and we can add more interfaces to it.

  concerning

  Assane

  Hi assane,.

  When you order the ASA5510, you can choose between (option Setup/Noo-Noo fixed to add more ports interface):

  1 ASA5510 device comes with 3 x FastEthernet, more 1xmanagement port (FastEthernet)

  ASA5510-BUN-K9: Cisco ASA 5510 Firewall Edition includes 3 Fast Ethernet interfaces, 250 peers IPSec VPN, SSL VPN 2 peers 3DES/AES license, or

  2 ASA5510 comes with 5xFastEthernet, most 1xmanagement port (FastEthernet).

  Cisco ASA 5510 Security Plus Firewall Edition includes 5 interfaces Fast Ethernet, 250 VPN IPSec peers, 2 peers of SSL VPN, high availability active / standby, 3DES/AES license

  http://www.Cisco.com/en/us/products/ps6120/products_data_sheet0900aecd802930c5.html

  Rgds,

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• blocked ports affecting http

  On recommendation of Cisco, I have blocked ports TCP 3127-3199 out my interface "inside". Seems that these are commonly used for mydoom ports. Now, when the user's browser uses these ports as source ports they don't have until it exceeds this window. Has anyone seen elsewhere this problem and how do you work around it?

  Roland,

  A MyDoom attack can be launched from the outside (entering your local network) or inside (out to your local network).

  IF YOU WANT TO BLOCK INCOMING OF MYDOOM ATTACKS:

  If this traffic passes through a firewall, then by default, the sessions opened from the outside are blocked unless explicitly allowed entering. If you use a router with ACL, then you must configure an ACL in the INCOMING direction and apply it to the interface from the OUTSIDE as such:

  --------------------------

  For routers:

  access-list 111 tcp refuse any any 3127 3199 Beach

  interface

  IP access-group 111 to

  --------------------------

  In this case, you'll experience the question that you're already because when a web server returns a bunch of session to the client (browser), then the destination ports match the ACL and the router will drop the session. To remedy this, we can apply an IOS Firewall to the external interface of the router. The ACL to block incoming attacks of MyDoom cannot while the router will maintain session state information in its table.

  IF YOU WANT TO BLOCK OUTBOUND MYDOOM ATTACKS:

  Then the ACL must be applied 'in' on the 'inside' interface

  --------------------------

  For the PIX Firewall:

  access-list 111 tcp refuse any any 3127 3199 Beach

  access ip-list 111 allow a whole

  Access-group 111 in the interface inside

  --------------------------

  --------------------------

  For the router:

  access-list 111 tcp refuse any any 3127 3199 Beach

  interface

  IP access-group 111 to

  --------------------------

  This should provide you with enough information to work on your issue.

  Paragraphs

• HOW connection NAT on ASA 5505

  Hello guys

  first of all, thank fully any community of cisco, they helped me a lot withouth expert and University...

  Today, I have some question on NAT

  We HAVE site-to-site VPN, his job very well.  our company demand of patern to use the public Ip address instead of the ip address private field of encryption. and they said, you have to NAT for you the private to the PUblic ip address. really, we don't know how NAT for cisco ASA 5505.

  THIS IS THE CASE

  OUR COMPANY = USES CISCO ASA 5505

  OUR PUBLIC IP ADDRESS: 155.155.1555.20

  PRIVATE IP: 192.168.7.2 SOUND LINUX SERVER, THEN HOW WE CAN NAT THIS IP PRIVATE AND CHANGE IN PUBLIC

  Thank you very much

  If you have 1 public IP address and it is assigned to your ASA outside interface, then you need to configure static PAT (you will need to know what exactly they want to access and configure the specific port they need).

  However, if you have a free public IP address, then you need not to know exactly what they need to get to and you can configure the linux server using the public IP to spare.

  Also, they need access to the linux server using public IP via the VPN tunnel (encrypted)? or they are happy to access only via the internet (clear text)?