Access through additional addresses to port 22 and public a web page

Hi all,
I have a problem that cannot resolve.

NOTE: My infraestructure is in Amazon AWS, maybe the problem is here. But I don't understand why I can't connect to my webserver.

I have one additional address in my UTM configuration,because I need publish a web page.

I created my additional address in:

Interaces&Routing->additional addresses

Name:            My-public-additional-address
On interface:    external
    
IPv4 address:    56.55.xx.xx
Netmask:    /32
    
Comment:    


Then,I created a virtual webserver an real webserver:

Real web server
Name:    My-real-web-server        
Host:        172.66.77.43
Type:    http
Port: 80

Virtual webserver:

Name:        my-virtual-name-server    
Interface:     My-public-address
Type:    http
Port:     80

    
Domains:My dns domain
Real webserver:My-real-web-server    

I would like acces to port 22 in the web server too, for this I configured  a DNAT in my firewall:

DNAT:

For traffic from:    Any
Using service:    Any
Going to:    External [My-public-additional-address] (Address)
Change the destination to:172.66.77.43

The problem is,when I try access to my web page or my ssh service I can see In a tcpdump the packets go outside  my host by never come back.

13:51:35.427558 IP 192.168.0.8.34529 > 56.55.xx.xx.22: Flags [S], seq 3112542583, win 29200, options [mss 1460,sackOK,TS val 4630208 ecr 0,nop,wscale 7], length 0
E..<.h@.@.......4..[.......w......r............
.F..........


When I checked the firewall log I can see packets allow to my public IP.

14:16:24     Packet filter rule #4     TCP           
172.66.77.43     :     22
    →     
My public IP     :     34709
          
[ACK SYN]     len=60     ttl=63     tos=0x00     srcmac=02:4f:9d:0f:c5:3d     dstmac=02:94:ad:f2:1c:a5

Could anyone help me please?