OPNsense
  • Home
  • Help
  • Search
  • Login
  • Register

  • OPNsense Forum »
  • Archive »
  • 16.1 Legacy Series »
  • NAT / PAT & Firewall rules
« previous next »
  • Print
Pages: [1]

Author Topic: NAT / PAT & Firewall rules  (Read 2699 times)

fredbloggs

  • Newbie
  • *
  • Posts: 7
  • Karma: 0
    • View Profile
NAT / PAT & Firewall rules
« on: May 31, 2016, 07:01:16 am »
bit of a newbie question, but this operates differently to what i'm used to.

It would appear that when passing traffic through the firewall it goes through the following path
  • NAT:  Where it translates the connection to the internal IP address & port
  • Firewall ; Where you have to allow connections to the Internal IP & Port

Is this as expected?  I'm used to it being the Firewall allows connection to the external IP and then gets passed to NAT to redirect.

I have also struggled with PAT, when using PAT what do I enable on the Firewall as the destination IP & port?  Is it the IP/Port pre-NAT or post-NAT?

I'm sure this is noted somewhere but I just can't find it written as a simple flow of how the traffic is processed and am struggling to get a working system in this way?

Thanks for any guidance.

Mark
Logged

  • Print
Pages: [1]
« previous next »
  • OPNsense Forum »
  • Archive »
  • 16.1 Legacy Series »
  • NAT / PAT & Firewall rules
 

OPNsense is an OSS project © Deciso B.V. 2015 - 2023 All rights reserved
  • SMF 2.0.19 | SMF © 2021, Simple Machines
    Privacy Policy
    | XHTML | RSS | WAP2