Configuring zentyal routing

[arojer]

Hello.
Could somebody help me to fix trouble?
I'm trying to manage the following configuration:
eth0 external static (provider 1) 178.155.xxx.44
eth1 external static (provider 2) 213.234.xxx.214
eth2 internal local domain 192.168.0.0/24
eth3 internal subnet, contains public IP's (from provider 1) 178.155.yy.8/29, interface has IP adress 178.155.yy.9

From Internet, IP's of eth3 are available through eth0 (provider's DNS server redirect packages to our interface).
But it does not work, in fact
My public IP's are not available from the Internet. I've tried everything. And for that moment i have no ideas how to make my public subnet is available for external users.

[christian]

I would say that standard way, from network standpoint, is to announce route on internet:
"in order to reach 178.155.YY.8/29, then go to 178.155.XXX.44" achieved using specialized protocol like RIPE or, better here, BGP.
Zentyal interface doesn't permit this but router you use to connect to your ISP should be able to handle it.
Or your ISP can d this for you.
I suppose this is what you mean when writing

From Internet, IP's of eth3 are available through eth0 (provider's DNS server redirect packages to our interface)

If you (or your ISP) can't do this, then you could still have a (painful) workaround using port redirection from 178.155.XXX.44 to your /29 network 

In such case, you should be able to see packets reaching eth0 and dropped by Zentyal FW... did you check this already?

Then you may have to change some routing... I need to check this further...

[arojer]

In such case, you should be able to see packets reaching eth0 and dropped by Zentyal FW... did you check this already?

I checked it out, there are no packages.

My ISP says that packages for my public static IP's of /29 subnet are drop somewhere at eth0.
I've tried to create rules for port forwarding from eth0 to /29 subnet, but nothing is changed.
Also, internet and domain resources are present on the /29 subnet's PC. But this PC is not available from domain and internet.
I think that something wrong with my Proxy.