Sonicwall Firewalls

Hi Guys

 

When installing 4phone on a customer’s network that has a SonicWALL Firewall in place, especially now that we are installing the ISDN box, please make sure the following settings are changed:

 

VOIP => Settings:

• Turn on Consistent NAT
• SIP Transformations sections should be DISABLED (unchecked)
• SIP ALG should be DISABLED (unchecked)

 

Firewall => Advanced => Scroll down to “UDP”:

• Increase UDP timeout to 120

 

Also modify the Global UDP Connection Timeout:

• Advanced tab = Firewall => Access Rules => LAN/WAN

Increase UDP to 120 to override any inherited UDP timeout rules

 

The best way is to email the above to the company’s IT and get them to do it.

 

Any problems let me know.

 

Thanks