Simple balancing doesn't work

Good morning community, I have to configure, for my work, a F5 VE. So, I download F5 VE 13.1.4 in my lab @home and install it on VMWare to make practice and understand the F5 basics. What I did is configure internal and external network VPN and assign related IP. Then Pool/Nodes and a Virtual Server listening on port 5000.

Everything looks good:

From F5 I can reach both nodes, even with a simple telnet on port 5000. From external network I can reach external F5 interface. The problem is that F5 doesn't route connection to the pool.

This is my network topology:

As I wrote, external network can reach VSERVER at 10.3.0.100 on port 5000. Then from F5 I can reach nodes in the pool always on port 5000. The problem here is when from a client (external network) I try to connect to VSERVER, it seems the connection is ESTABLISHED for a while, but not forwarded to internal network.

While I tried to establish a connection from a client from external network (10.3.0.128), this is what happen:

    1   0.000000   10.3.0.128 → 10.3.0.100   TCP 70 61440 → 5000 [SYN] Seq=0 Win=64240 
    2   0.000219   10.3.0.100 → 10.3.0.128   TCP 66 5000 → 61440 [SYN, ACK] Seq=0 Ack=1 
    3   0.002661   10.3.0.128 → 10.3.0.100   TCP 58 61440 → 5000 [ACK] Seq=1 Ack=1 
    4   0.006505   10.3.0.128 → 10.2.0.129   TCP 66 61440 → 5000 [SYN] Seq=0 Win=4380 
    5   0.059742   10.3.0.128 → 10.3.0.100   IPA 115 unknown 0x30 
    6   0.059768   10.3.0.100 → 10.3.0.128   TCP 58 5000 → 61440 [ACK] Seq=1 Ack=58 
    7   3.003461   10.3.0.128 → 10.2.0.129   TCP 66 [TCP Retransmission] 61440 → 5000 [SYN] Seq=0 Win=4380 Len=0 MSS=1460 SACK_PERM=1
   10  12.004963   10.3.0.100 → 10.3.0.128   TCP 113 5000 → 61440 [RST, ACK] Seq=1 Ack=58 
   11  12.004980   10.3.0.128 → 10.2.0.129   TCP 106 61440 → 5000 [RST, ACK] Seq=1 Ack=1

I'm getting crazy since configuration should be ok, could someone help me?

Thank you very much,

Lucas