Troubleshoot: Port is blocked by the firewall
[Please suggest content for the Short Description, to summarise and introduce this topic.]
Vyatta contains a robust set of Layer 4 firewall features. A quick and simple way to check whether or not a problem relates to the firewall is to temporarily remove the firewall rule set and check whether the problem still exists.
However, in many environments this is not an acceptable first step, for security reasons. So, the network administrator must judge whether this step is: acceptable, acceptable only during a controlled change window, or unacceptable for their environment.