Port forwarding via Router/Firewall - problem

[zd]

Hi!

I'm using SecureBridge with IBDAC to connect to an FB server over the Internet.

Here is my config:
Client running IBDAC with ScSSHClient
|
Internet
|
Router/Firewall with a Dyndns.org address (myhostname.dyndns.org)
Router is forwarding port 22 to IP address 192.168.1.102
|
Server with IP address 192.168.1.102 running ScSSHServer and Firebird 2.1

Settings:
ScSSHClient hostname: myhostname.dyndns.org
IBDAC server: localhost
Automatic port forwarding for ports 3050 and 5000 using SC port forward components on client's side

Here is the problem:
If I set DestHost of the port forwarding components to myhostname.dyndns.org IBDAC is giving me "Connection rejected by remote interface" error.
If I set DestHost to 192.168.1.102 (local IP of server) the connection is made.

My question is:
Why I do I have to set DestHost to an IP address that I propably won't even know in a real-life environment? Usually, you only know the hostname of the server, port forwarding should be automatic...

Am I doing something wrong? Is there a workaround?

My other question is:
When making a remote connection the system is very slow and there is a great lag. I've tried other similar solutions before (like Zebedee) and there were no such speed decrease. Compression is allowed in both ScSSHClient/Server. Is the lag due to SecureBridge?

Thanks!

[Dimon]

1. If your Firebird and SSH server are located on the same computer, you can specify 'localhost' in ScSSHChannel.DestHost. DestHost is sent to the SSH server and therefore this address is applied relatively to the server.

2. I could not reproduce the problem. SecureBrdige has high performance. Try to set the TScSSHClient.CompressionClient property to the csRequired value.