Network Security

My Cisco 891 is randomly dropping tcp sessions which i believe is resulting in web page timeouts and half loads.The error messages look like these. This example includes one local ip, but it happens to lots of internal hosts randomlyAug 15 16:54:46.2...

 Hi!There is a scenario where a Cisco ASA is connected on a LAN with hosts on the LAN having the ASA's inside interface (10.10.10.100) as default gateway.A router (10.10.10.20) is also connected to the LAN and is not in-line with the Cisco ASA (out-o...

The ASA 5510 here is crashing frequently. We have been unable to find out why exactly this is happening, and the device is not under a service contract. The logging that is in place doesn't give any hints as to why this is happening. Since the last t...

Hi We have a ASA5545 with IOS 9.1(1)  we are unable to do Traceroute to any public IP's from the inside host raghu@mon:~$ traceroute 8.8.8.8traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets 1  sw1-core-107 (10.10.4.2)  0.425 ms  0.439 ms ...

I have a simple IP address design question.When I design internal networks, I create /24 networks for all my internal VLANs For example:Servers are 10.1.10.0/24Clients are 10.1.11.0/24Management is 10.1.12.0/24etc...All these networks summarize nicel...

So AT&T has forced me to switch from their standard DSL to the new U-Verse.......  So far things have been less than fun. My set up was this.5505 set up to establich PPOE connection.  This 5505 then created a VPN to different office.  Staff could sur...

Dear All,I have a Nat design question. I would like enhance the communicaton that i have with a partner company.The issue is that we use common ip addressing for several networks.You can see in the attached diagram . I have currently an ASA 8.2.5 whi...

Hi, Iam setting up a DMZ environment to have External customers access my Servers sitting in the DMZ. I have attached the diagram for reference.Proposed Setup1) 2x ISP links (redundant) - IPSEC connections from customer terminating on our Internet Fa...

Hi,We are using a ASA 5512.Inside there are not more than 20 odd hosts. This is lying at remote office and is managed remotely via ssh if required.We are using 9.1(3) firmware. Around 4 months backthere was one incedent  internet stopped working afte...

Cisco ASA 5510 IPS Firewall with ASA-SSM-10 Module.  I am trying to do a manual update of the signature file and get the following error:Error: execUpgradeSoftware : couldn't connect to host  I have confirmed that I can ping the ftp server successful...