Network Security

I have SMTP server behind pix with NAT and SMTP permit inside. While mail server working it is ok. When I turn off mail server, i loose mail that i try to send from outside and also i dont get message dilivery failure as reply. where is the ,message ...

Does anyone know whether or how well the PIX (520) supports port mapping and statics when using DHCP on the outside interface?From the docs, it looks like I can configure port mapping via statics when using DHCP by specifying the interface keyword ra...

My organization uses a PIX 506e firewall, and I cannot connect to the PDM. I looked at the firewall configuration via telnet and noticed that the http server is pointing to the correct IP address, however the netmask is 255.255.255.255 whereas the ...

how to resolve the configuration file as the files is not created with 3660 enterprise version.what could be the reason.please help

hi!easy question i'm sure!I have a pix firewall in front of a small network of 10.0.0.X ip'si have set up pix so that people connecting via vpn client are assigned 172.16.1.X addressesI can connect and all seems well, except that I cannot ping on con...

Hi, There is a 10 and 50 user model of the 501. What is a "user" and how does it tell how many there are. I am usng this at a small office with about 5 people and creating a VPN tunnel to a 506 with about 15 people. Will all the people on the other s...

We use GRE tunnel over IPSEC. How can I set priority queue and interleaving on the tunnel interface for the packets what are transported inside the GRE tunnel?If it is not possible how can I set the QoS for the VoIP which trasported over this GRE tun...

normal the device uses for nat and pat function,cpu load is about 20 % with 40M traffic,sometime ago, i discovered the internet speed suddenly down,then i used ping and trace tools.discovered the pix make a large delay.cpu usage was 98 percent.i have...

a pos interface of my 7507, it's line protocol has become "up" and "down" for some minutes.This is the show log text:Apr 14 14:41:17 cst: %RSP-3-ERROR: MD error 0000008000002000-Traceback= 60332754 60332E70 60332FA8 603339A4 6030D3ACApr 14 14:41:17 c...

I need a recommendation on the appropriate routers to use. I have a central/remote office arrangement. The central office uses the ip range of 192.168.16.x/24, remote office A uses 192.168.0.x/24, and remote office B uses 192.168.1.x/24. I want th...

Help! We have a PIX firewall, an HP server running Windows 2000 Terminal server & several PCs connected to a 3Com switch. A router is connected on the PIX¡¯s outside interface.Problem: When users log in from their PCs (Windows XP Service Pack 1) to t...

New user, first time to upgrade. I have downloaded from Cisco two files that reside on my hard drive (C). The files are (pix633.bin) and (pdm-301.bin). I currently have 6.3.1. Do I need to upgrade both files, or will just the (pix633.bin) work. I se...

We're looking at using an Internet VPN as a backup connection between 2 data centers. To handle this dynamically, we'd like to put a router in a DMZ of our PIX 525s and have it share OSPF tables with a router on the inside network from the PIX. Ano...

I have a Pix 525 configured to work with the 2 built-in ethernet interfaces. I bought 2 Gig ethernet interfaces and I want to install them to replace the 100mb interfaces.My question is about what I will have to do to my Pix configuration so all my a...

I am having trouble getting past phase 1 with my PIX501 running 6.3(3). Below is the log from the VPN3060 concentrator (4.04a) showing an error. Unfortunately, I cannot find anything on CCO for what this error and associated flags mean.59586 02/13/20...