Security Basics mailing list archives
Re: DMZ - Question
From: p1g <killfactory () gmail com>
Date: Sat, 27 Oct 2007 10:34:13 -0400
Can't a pix be licensed and support multiple DMZs? I understand what you are trying to do with 2 FWs, but Dan is right. IMO. Take a look at the new ASAs. I'll bet you will be more likely to be approved for redundant Cisco ASAs with all the new security features built in, before 1 PIX + maint. and 1 VendorX + main. + training + added complexity. An ASA is PIX under the hood. Everyone needs are different though. Good luck. - Show quoted text - On 26 Oct 2007 15:41:02 -0000, hol64 () hotmail com <hol64 () hotmail com> wrote:
I have to setup a DMZ on our network. Our current layout is Internet Router <--> Firewall <--> WAN/LAN Router <--> Servers The idea is to setup a back-to-back DMZ or Dual Firewall DMZ. So the topology would be like this.. Internet Router --> FW-1 <--> DMZ <--> FW-2 <--> WAN/LAN router. On the DMZ we will have a Web Server that needs access back to the Mainframe on the LAN, and a Mail server that need access to another mail server on the LAN. One of my questions is the DMZ is in a /24 subnet and the LAN is on a /16 subnet. Is the only way for the web server in the DMZ to communicate with the inside LAN by NATting in the FW-2. Isn't this creating a double subnet from the outside?? I am working with 2 pix firewalls, and I am hoping to change FW-2 to a different brand that has stateful inspection. Please Advice, Thanks, Pablo
-- -p1g SnortCP ,,__ o" )~ oink oink ' ' ' ' If you spend more on coffee than on IT security, you will be hacked. What's more, you deserve to be hacked. -- former White House cybersecurity czar Richard Clarke On 26 Oct 2007 15:41:02 -0000, hol64 () hotmail com <hol64 () hotmail com> wrote:
I have to setup a DMZ on our network. Our current layout is Internet Router <--> Firewall <--> WAN/LAN Router <--> Servers The idea is to setup a back-to-back DMZ or Dual Firewall DMZ. So the topology would be like this.. Internet Router --> FW-1 <--> DMZ <--> FW-2 <--> WAN/LAN router. On the DMZ we will have a Web Server that needs access back to the Mainframe on the LAN, and a Mail server that need access to another mail server on the LAN. One of my questions is the DMZ is in a /24 subnet and the LAN is on a /16 subnet. Is the only way for the web server in the DMZ to communicate with the inside LAN by NATting in the FW-2. Isn't this creating a double subnet from the outside?? I am working with 2 pix firewalls, and I am hoping to change FW-2 to a different brand that has stateful inspection. Please Advice, Thanks, Pablo
-- -p1g SnortCP ,,__ o" )~ oink oink ' ' ' ' If you spend more on coffee than on IT security, you will be hacked. What's more, you deserve to be hacked. -- former White House cybersecurity czar Richard Clarke
Current thread:
- DMZ - Question hol64 (Oct 26)
- Re: DMZ - Question Ansgar -59cobalt- Wiechers (Oct 26)
- Re: DMZ - Question Daniel Anderson (Oct 29)
- Re: DMZ - Question Ansgar -59cobalt- Wiechers (Oct 29)
- Message not available
- Message not available
- Re: DMZ - Question kevin fielder (Oct 31)
- Re: DMZ - Question Daniel Anderson (Oct 29)
- Re: DMZ - Question Ansgar -59cobalt- Wiechers (Oct 26)
- <Possible follow-ups>
- Re: Re: DMZ - Question hol64 (Oct 26)
- Re: DMZ - Question Ansgar -59cobalt- Wiechers (Oct 29)