Network Security

HiProblem:MS-Outlook Express (OE) doesn't send messages through MS-Exchange Server (resides on DMZ), when the PIX Firewall MailGuard feature is ON (fixup protocol smtp 25). When MailGuard is turned off, I am able to send messages. It is understood ...

Does anyone know if this can work. I have two Pix 515 firewalls and the setup is as follows:ISP - Router - PIX1 - PIX2 - InternalRemote VPN users will terminate at PIX1 and I need to know how they will get to the internal network and how the internal...

Hi, I don't know whether the pix support the transparent mode to provide the internet service.Somebody can answer me? and give me some URL about this issue. ThanksSincerely

Dear readers,I have ADSL + static single IP.Instead of using linux firewall, I would like to use my PIX 506. My HTTP server is at inside at 10.1.1.100. When configuring static to map outside interface address to port 80 at 10.1.1.100 I receive error ...

I have multiple clients using the Cisco VPN client to connect to a PIX 515. Everything was working fine until one of the ISP's that a couple clients use made a change that will not let them connect anymore. They claim to only be blocking UDP & TCP ...

I have a 3002 tunnel to a 3015. Behind the 3002 is a Cisco router with NTP setup on it. No NTP traffic appears to be traversing the tunnel, there are no filters on the tunnel prevent NTP (123) traffic.Is there something in the 3015 that has to be s...

I do not know much about PIX firewalls so I'm looking for some help.IP's have been changed for the purpose of this posting and security concerns.I have a PIX firewall with the below configuration:PIX Version 6.1(2)nameif ethernet0 outside security0na...

Hi, I caught up in problem , i terminated VPN on PIX between 3 sites , one of the sites is having 4 different internal network of which 3 behind routers , users from different VPN sites need to access this networks .... how shall i add the routes v...

Hey all,I have a bit a stumper (for me at least). I have a 501 behind a broadband cable modem (motorola). The cable modem is acting as a bridge. The 501 gets a public IP from their ISP. To get to the configuration of the cable modem, in a web browser...

Hi There, I was implementing a Pix 506E ver 6.3(3) the other night and ran into a few challenges that I was hoping someone could help me with. To set up the topology: we have two T-1s coming in that land on a Cisco 25XX and then hand off via E0 to ...

PIX can max allow how much icmp-echo ping

I want to force users on a public hotspot to accept a user agreement (web page) before they get access to the internet. I would prefer to have this user agreement come up and respond to any HTTP request their web browser asks for until they accept it...

HiRecently I noticed that my setup with two pix 520 in failover is not functioning. (s/w 5.1(4). cable based failover).Looking at "show ver" on both pix i found that one of the pix (primary at present) has VPN DES-3DES Enabled where as in Standby uni...