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Home > Success Center > Network Performance Monitor (NPM) > NetPath stops at the firewall

NetPath stops at the firewall

Updated March 10, 2017

Overview

NetPath works for everything just fine on the inside of your network but stops at the firewall.

Environment

  • NPM 12
  • Sonicwall E-Class Firewall

Cause 

If NAT not being turned on, Decrement IP TTL for forwarded traffic is unchecked and port 11 being blocked.

Resolution

  1. Go Firewall Settings > Advanced.  Make sure 'Decrement IP TTL for forwarded traffic' is selected.
  2. Setting a NAT (with reflexive) is a must. 
  3. Set port 11 as allowed is necessary.

 

 

 

 

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