Network Security

we have a router doing nat and vpn to remote through internet.PC can vpn without nat (lan-lan), but, how it can re-direct traffic to internet when ip is not nating ?the router has a default route to internet.The VPN works fine and internet connection...

My customer has 3 public networks and a single Internet connection. The IP address space on their Internet connection is a 30 bit point to point subnet. The other 2 networks are Class C. They want to use these 2 Class C networks for Static nat tra...

Hi! What I need to upgrade a Pix 515 v6.2(2) to make it compatible with IPv6??Thank you!

Our ISP has supplied us a Cisco router which is currently connected to a switch. I am trying to add a PIX 501 into the mix. Below is my current running configuration on the PIX and the router. I am not able get an outside connection when the PIX i...

I'm implementing my first PIX this weekend, and I wanted to post my config for you experts to look at before I start. If anybody notices something that may cause some problems, or if you have any suggestions, I would greatly appreciate it. Thanks.P...

Hello there,It's more question of design, so I'd really appreciate any ideas. Basically we have a leased line connection, it's connected thru serial interface to 1721 router. There are 12 VLANs (subinterfaces) setup on internal router's ethernet inte...

I have the .bin file for 6.3(2) on my tftp server. I need instructions to upgrade my pix from 6.2(2) to 6.3. Please let me know the commands to back up my existing configuration and upgrade to newer version.

Hi,I'm curious to find out what goes on as far as communications between a local host and a router is concerned when the arp cache of a router has two instances of the same MAC address but different IP address. What would happen to local hosts wanti...

Dear All,I have PIX 506E and I want to backup pix images (.bin) to a safe locaation as per overall backup procedures.Please advise exact command to use.Thanks in advance

Can anyone tell me how to tell if I have a restricted or unrestricted liscense on my PIX-515? Here is the show ver.Firewall# sh ver Cisco Secure PIX Firewall Version 5.3(2) Compiled on Tue 03-Jul...

I am currently trying to find out whether or not a static command would be needed to connect to an inside device from the outside w/o any NATs and assuming routing is in place for all. I have always been under the impression that statics were needed...

The VPN works ok normally but when there is a power outage at remote site and after power/communication reusmes, we can ping router on remote site but not server which sends traffic though VPN to HO.Once the server from the remote side send pings to ...

Hi,How can i configure a remote client that can access my pix using telnet? i already issue the command telnet 192.168.1.1 255.255.255.255 insidetelnet timeout 5ssh timeout 5terminal width 80but when asking for the password, i cant get into the pix c...

Hi,I do have some trouble to get my dmz settings working. I have a reverse proxy, located in the dmz, which is supposed to redirect all http traffice to a certain domain to web server that is in the inside network. The PIX does NAT all connections or...