What wrong with Debian port open configuration?

Question

I use tomcat 9.0.3 with this configs:

<Connector
       protocol="org.apache.coyote.http11.Http11NioProtocol"
       port="8443" maxThreads="200"
       scheme="https" secure="true" SSLEnabled="true"
       keystoreFile="mystore2" keystorePass="PWD"
       clientAuth="false" sslProtocol="TLS"/>

and this listners:
org.apache.catalina.startup.VersionLoggerListener
org.apache.catalina.core.JreMemoryLeakPreventionListener
org.apache.catalina.mbeans.GlobalResourcesLifecycleListener
org.apache.catalina.core.ThreadLocalLeakPreventionListener

when I try connect from browser it throw ERR_CONNECTION_REFUSED

I try open 8443 port by:

iptables -I INPUT 1 -p tcp --dport 8443 -j ACCEPT
ufw allow https

But when I check remotely port closed even though result of ufw status:

Status: active
To Action From
-- ------ ----
OpenSSH ALLOW Anywhere
8080 ALLOW Anywhere
8443 ALLOW Anywhere
22 ALLOW Anywhere
80/tcp ALLOW Anywhere
443/tcp ALLOW Anywhere
OpenSSH (v6) ALLOW Anywhere (v6)
8080 (v6) ALLOW Anywhere (v6)
8443 (v6) ALLOW Anywhere (v6)
22 (v6) ALLOW Anywhere (v6)
80/tcp (v6) ALLOW Anywhere (v6)
443/tcp (v6) ALLOW Anywhere (v6)

netstat -tulpn | grep LISTEN:

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 622/sshd
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 684/mysqld
tcp6 0 0 :::22 :::* LISTEN 622/sshd
tcp6 0 0 127.0.0.1:8005 :::* LISTEN 618/java
tcp6 0 0 :::8080 :::* LISTEN 618/java

Answer 1

The problem was in wrong configuration of . When I created password, I set it for key and for store. After delete key password, all go well