Port Forwarding issue in the XG 210 Firmware SFOS 17.1.1 MR-1

Question

i have panasonic vc devices i need to port forwarding firewall. 
 i am able telnet local port of panasonic vc device from lan. 
 but when i outside using global ip of firewall which i forwarded it is not telnet. 
 port forwarded 5060 tcp 5060 udp 5100 udp 5135 udp 5200 udp 5235 udp 1719 udp 1720 tcp

LuCar Toni · Accepted Answer

Hi, 
 you have to do a DNAT. 
 https://community.sophos.com/kb/en-us/122976

LuCar Toni · Answer

I will try to understand your request. 
 You have "multiple devices" (VOIP Phones?) behind a XG and want to forward some certain ports to those devices? 
 First of all : Telnet only works for TCP. But this should not be an issue here. 
 Second: You should be take a look into your requirements, because this is not quite possible to do like you explain. 
 You have one IP as WAN. So basically you can port forward for example 5060 UDP to one Device behind XG. But not to all devices because XG does not know how to decide which phone should get connected. 
 At this point we are in the SIP protocol. Check out the SIP KBA: 
 https://community.sophos.com/kb/en-us/123523 
 And the explanation of SIP: https://en.wikipedia.org/wiki/Session_Initiation_Protocol

suhas dorge · Answer

hi, this blocking from the Local ISP. 
 
 now it is solved. 
 
 ok thank you for such time. 
 
 we already configured DNAT in the firewall giving plan rule in firewall.