Network Security

We have a Cisco secure VPN site to site tunnel between the 2 locations.Which ports are need to open on tunnel so that users can successfully use OCS over the site to site VPN tunnel.All the users are havning the main brach AD account.Using Wireshark ...

Hi All,What exactly you mean by dual nat ,I have seen most of them using these concept in point to point concept.

This is a simple problem, yet I cannot get this to work properly and I've even had a Cisco engineer from TAC set-this up... and it literally broke my inside network.  I have a VPN range of addresses..x.x.x.x on the Outside that needs access to a serv...

I'm having slow performance thru a Site to Site VPN. I have an ASA 5520 in each site with the version 8.2(4) in both ASA's.I have a 20Mb internet service in one side and in the other side I have 50Mb.When I transfer a file from the Sita A to Site B I...

Hi all,We use cisco router 2911 as corporate gateway - there is Zone Based Firewall implemented - I upgraded IOS to last version (15.2(2)T1) - originaly version 15.1(4)M1 - to solve issue with Anyconnect connections (bug CSCtx38806) but I found that ...

I've been trying to get my WRVS4400N connected to my ASA5505 on the internet through a Cox connection, but it isn't working.  I cannot get the ASA to be the DHCP server for the wireless router.  I've configured the wireless router as a gateway and po...

We are running a FWSM and have created ACL's for a new Lync install.  One of the rules needs to have port 5061 access from any source to our front edge server for communication.  When looking at the logs I see a hit on the ACL but nothing ever actual...

Hi ALLi have to install an ASA 5505 and i need DHCP for more than 1000 ip addressesi faced a problem when i am configuring a DHCP pool that i con not get more than 256 ip addresss from the dhcp pooldo i have to buy a license or upgrading new firware ...

I hope this is in the right forum.How do I monitor connections to the DMZ port on our ASA 5505 (via ASDM 5.2)? We have a WAP connected to it and it's intermittently dropping connections. Thanks!

We have an ASA 5505 running version 8.4. We are having problems allowing external traffic to access computers behind the firewall. Our current config is:ASA Version 8.4(3)!hostname ciscoasadomain-name default.domain.invalidnames!interface Ethernet0/0...

Hi there,I meet a problem now.  I need to setup static NAT for an inside address behind a router, the config on ASA seems correct, but the connection cannot be established. Topology:   ASA -- 3825 -- 3750 -- serverLet's say the outside address of ASA...

Hi all, Having a CUCM beind the firewall, traffic will traverse public internet and private cloud for voice services.What's the best practice to protect the CUCM and entire voice network to avoid being intrude?thanksNoelp.s : http://www.cisco.com/en/...

Sorry if this is not the right forum.I have attached a config for my cisco 877w which i have now setup and have most things working.I followed the following website (http://http://www.sans.org/reading_room/whitepapers/firewalls/secure-configuration-c...

Hi All,Is there any methods to reserve the bandwith for each VPN Tunnels. ( IPSec Site-to-Site)Thanks in advance.Shijo.