Problem with connect to RDS2012R2 from external network without gateway role.

Hello everybody!

I have some problem with my terminal farm based on rds2012r2 but WITHOUT gateway role.
My environment is described below:
All servers are virtual machines on vmware.
- AD DC - test-ad-01 - 192.168.2.241
- Broker - test-br-01 - 192.168.2.242
- Session Host - test-rdsh-01 - 192.168.2.243

Also below I described rules for port forwarding:
ext.ip:3387 - 192.168.2.242:3389
ext.ip:3389 - 192.168.2.243

And I modifyed the RDP file for change port for brocker:
full address:s:TEST-BR-01.TEST.LOCAL:3387

So, when users connecting from internal network all is OK. But when I try to connect from external network it don't work.
Server with broker role has this record in Event Viewer:

RD Connection Broker successfully processed the connection request for user TEST\user. Redirection info: 
Target Name = TEST-RDSH-01 
Target IP Address = 192.168.2.243 
Target Netbios = TEST-RDSH-01 
Target FQDN = test-rdsh-01.test.local 
Disconnected Session Found = 0x1

Can I change the Target IP Address to external IP, because I think it will solve my problem.