Network Security

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I'm working on implementing a PIX515 into our organization. Right now, all we have is a router performing PAT so one IP is used for Internet for all internal users. Everyone is assigned (throught the NAT Table) there own ports so they can log in to t...

abruso by Level 2
  • 638 Views
  • 2 replies
  • 0 Helpful votes

Hello,I have a Pix 515e as my firewall. We had a power failure last night and when I checked the config trough the PDM, I noticed that on my external ethernet card, I had lost my adresses, even tho it was saved to flash. I put them back since, and I ...

m_burutzis by Community Member
  • 436 Views
  • 1 replies
  • 0 Helpful votes

Our ISP has supplied us with a Cisco router that is configured to forward email messages to the exchange server on our network. I called and told them that I am adding a firewall and they told me that they need to disable NAT on their router and that...

jerryfreeman by Community Member
  • 1029 Views
  • 2 replies
  • 0 Helpful votes

Hi,I have one question that as to do with the way that vlans work with PIX, that is, when it’s configured in PIX.I have a PIX that, beside other things, as two (2) vlans configured on it, in the same interface (inside).But the problem is that these t...

rcapao by Level 3
  • 1295 Views
  • 9 replies
  • 0 Helpful votes

I'm trying to get access for a server (Webserv3) in a DMZ from the internet. This is the first server I'm trying to get to from the outside. Also I'm trying to limit some of the PC's on inside networks from the internet. I think the problem is with t...

We are attempting to build a new distribution block for our WAN backbone. We are having a problem in establishing ICMP and Telnet through the PIX. The following is known:1. Ping and telnet from the 6509 and internal network works fine to the PIX.2. P...

markneil by Community Member
  • 798 Views
  • 2 replies
  • 0 Helpful votes

Dear all,Can anybody give me some advise/links on configuring 2 PIX 515's in a load balanced configuration ?The plan (maybe) is to have 2 PIX 515's connected via a LAN connection and located in seperate parts of the building, that connect to the Inte...

If I have a cable modem/DSL box that has a single static on the outside of it, and it does NAT and DHCP, can I host an SMTP server inside a Pix?Example, outside device is at 65.102.241.209/29. It delivers 192.168.1.0/24 DHCP Addresses. The Pix picks ...

pmonfile by Community Member
  • 545 Views
  • 1 replies
  • 0 Helpful votes

Some firewalls (like Raptor) have a feature that will check incoming mail IP/Domain to make sure that the sender's domain name can be reached (reverse path) via the sender's IP address. This prevents spammers from sending mail to your mail server wit...