Score:0

Cannot access port 9990 wildfly

bm flag

I'm in the next situation. My server is an Ubuntu 22 and I use Plesk to manage it. I installed Wildfly 27 final, and I followed this tutorial. I didn't have any issues installing it, my problem is I need to access the admin console using port 9990, but when I access MyIP:9990 it takes too much and sends the message 'timed out'. I'm not an expert about connections and ports so I need a bit of help, I'm stuck.

Checking wildfly status in my terminal shows:


root@bold-goldwasser:\~# systemctl status wildfly
● wildfly.service - The WildFly Application Server
Loaded: loaded (/etc/systemd/system/wildfly.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2022-12-31 19:14:33 UTC; 3 days ago
Main PID: 889 (launch.sh)
Tasks: 52 (limit: 2196)
Memory: 133.0M
CPU: 7min 18.259s
CGroup: /system.slice/wildfly.service

Last lines in log /opt/wildfly/standalone/log/server.log show:

2022-12-31 19:14:51,270 INFO  \[org.jboss.as\] (Controller Boot Thread) WFLYSRV0025: WildFly Full 27.0.0.Final (WildFly Core 19.0.0.Final) started in 12989ms - Started 290 of 563 services (357 services are lazy, passive or on-demand) - Server configuration file in use: standalone.xml
2022-12-31 19:14:51,274 INFO  \[org.jboss.as\] (Controller Boot Thread) WFLYSRV0060: Http management interface listening on http://0.0.0.0:9990/management
2022-12-31 19:14:51,275 INFO  \[org.jboss.as\] (Controller Boot Thread) WFLYSRV0051: Admin console listening on http://0.0.0.0:9990

My standalone.xml config is:

<?xml version="1.0" ?>

<server xmlns="urn:jboss:domain:20.0">
    <extensions>
        <extension module="org.jboss.as.clustering.infinispan"/>
        ....
    </extensions>
    <management>
        <audit-log>
            <formatters>
                <json-formatter name="json-formatter"/>
            </formatters>
            <handlers>
                <file-handler name="file" formatter="json-formatter" path="audit-log.log" relative-to="jboss.server.data.dir"/>
            </handlers>
            <logger log-boot="true" log-read-only="false" enabled="false">
                <handlers>
                    <handler name="file"/>
                </handlers>
            </logger>
        </audit-log>
        <management-interfaces>
            <http-interface http-authentication-factory="management-http-authentication">
                <http-upgrade enabled="true" sasl-authentication-factory="management-sasl-authentication"/>
                <socket-binding http="management-http"/>
            </http-interface>
        </management-interfaces>
        <access-control provider="simple">
            <role-mapping>
                <role name="SuperUser">
                    <include>
                        <user name="$local"/>
                    </include>
                </role>
            </role-mapping>
        </access-control>
    </management>
    <profile>
        <subsystem xmlns="urn:jboss:domain:logging:8.0">
            <console-handler name="CONSOLE">
                <level name="INFO"/>
                <formatter>
                    <named-formatter name="COLOR-PATTERN"/>
                </formatter>
            </console-handler>
            <periodic-rotating-file-handler name="FILE" autoflush="true">
                <formatter>
                    <named-formatter name="PATTERN"/>
                </formatter>
                <file relative-to="jboss.server.log.dir" path="server.log"/>
                <suffix value=".yyyy-MM-dd"/>
                <append value="true"/>
            </periodic-rotating-file-handler>
            <logger category="com.arjuna">
                <level name="WARN"/>
            </logger>
            <logger category="io.jaegertracing.Configuration">
                <level name="WARN"/>
            </logger>
            <logger category="org.jboss.as.config">
                <level name="DEBUG"/>
            </logger>
            <logger category="sun.rmi">
                <level name="WARN"/>
            </logger>
            <root-logger>
                <level name="INFO"/>
                <handlers>
                    <handler name="CONSOLE"/>
                    <handler name="FILE"/>
                </handlers>
            </root-logger>
            <formatter name="PATTERN">
                <pattern-formatter pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p [%c] (%t) %s%e%n"/>
            </formatter>
            <formatter name="COLOR-PATTERN">
                <pattern-formatter pattern="%K{level}%d{HH:mm:ss,SSS} %-5p [%c] (%t) %s%e%n"/>
            </formatter>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:batch-jberet:3.0">
            <default-job-repository name="in-memory"/>
            <default-thread-pool name="batch"/>
            <job-repository name="in-memory">
                <in-memory/>
            </job-repository>
            <thread-pool name="batch">
                <max-threads count="10"/>
                <keepalive-time time="30" unit="seconds"/>
            </thread-pool>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:bean-validation:1.0"/>
        <subsystem xmlns="urn:jboss:domain:core-management:1.0"/>
        <subsystem xmlns="urn:jboss:domain:datasources:7.0">
            <datasources>
                <datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true" statistics-enabled="${wildfly.datasources.statistics-enabled:${wildfly.statistics-enabled:false}}">
                    <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE;MODE=${wildfly.h2.compatibility.mode:REGULAR}</connection-url>
                    <driver>h2</driver>
                    <security>
                        <user-name>sa</user-name>
                        <password>sa</password>
                    </security>
                </datasource>
                <drivers>
                    <driver name="h2" module="com.h2database.h2">
                        <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
                    </driver>
                </drivers>
            </datasources>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:deployment-scanner:2.0">
            <deployment-scanner path="deployments" relative-to="jboss.server.base.dir" scan-interval="5000" runtime-failure-causes-rollback="${jboss.deployment.scanner.rollback.on.failure:false}"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:discovery:1.0"/>
        <subsystem xmlns="urn:jboss:domain:distributable-ejb:1.0" default-bean-management="default">
            <infinispan-bean-management name="default" cache-container="ejb" cache="passivation" max-active-beans="10000"/>
            <local-client-mappings-registry/>
            <infinispan-timer-management name="persistent" cache-container="ejb" cache="persistent" max-active-timers="10000"/>
            <infinispan-timer-management name="transient" cache-container="ejb" cache="transient" max-active-timers="10000"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:distributable-web:3.0" default-session-management="default" default-single-sign-on-management="default">
            <infinispan-session-management name="default" cache-container="web" granularity="SESSION">
                <local-affinity/>
            </infinispan-session-management>
            <infinispan-single-sign-on-management name="default" cache-container="web" cache="sso"/>
            <local-routing/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:ee:6.0">
            <spec-descriptor-property-replacement>false</spec-descriptor-property-replacement>
            <concurrent>
                <context-services>
                    <context-service name="default" jndi-name="java:jboss/ee/concurrency/context/default" use-transaction-setup-provider="true"/>
                </context-services>
                <managed-thread-factories>
                    <managed-thread-factory name="default" jndi-name="java:jboss/ee/concurrency/factory/default" context-service="default"/>
                </managed-thread-factories>
                <managed-executor-services>
                    <managed-executor-service name="default" jndi-name="java:jboss/ee/concurrency/executor/default" context-service="default" hung-task-termination-period="0" hung-task-threshold="60000" keepalive-time="5000"/>
                </managed-executor-services>
                <managed-scheduled-executor-services>
                    <managed-scheduled-executor-service name="default" jndi-name="java:jboss/ee/concurrency/scheduler/default" context-service="default" hung-task-termination-period="0" hung-task-threshold="60000" keepalive-time="3000"/>
                </managed-scheduled-executor-services>
            </concurrent>
            <default-bindings context-service="java:jboss/ee/concurrency/context/default" datasource="java:jboss/datasources/ExampleDS" managed-executor-service="java:jboss/ee/concurrency/executor/default" managed-scheduled-executor-service="java:jboss/ee/concurrency/scheduler/default" managed-thread-factory="java:jboss/ee/concurrency/factory/default"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:ee-security:1.0"/>
        <subsystem xmlns="urn:jboss:domain:ejb3:10.0">
            <session-bean>
                <stateless>
                    <bean-instance-pool-ref pool-name="slsb-strict-max-pool"/>
                </stateless>
                <stateful default-access-timeout="5000" cache-ref="simple" passivation-disabled-cache-ref="simple"/>
                <singleton default-access-timeout="5000"/>
            </session-bean>
            <pools>
                <bean-instance-pools>
                    <strict-max-pool name="mdb-strict-max-pool" derive-size="from-cpu-count" instance-acquisition-timeout="5" instance-acquisition-timeout-unit="MINUTES"/>
                    <strict-max-pool name="slsb-strict-max-pool" derive-size="from-worker-pools" instance-acquisition-timeout="5" instance-acquisition-timeout-unit="MINUTES"/>
                </bean-instance-pools>
            </pools>
            <caches>
                <simple-cache name="simple"/>
                <distributable-cache name="distributable"/>
            </caches>
            <async thread-pool-name="default"/>
            <timer-service thread-pool-name="default" default-data-store="default-file-store">
                <data-stores>
                    <file-data-store name="default-file-store" path="timer-service-data" relative-to="jboss.server.data.dir"/>
                </data-stores>
            </timer-service>
            <remote cluster="ejb" connectors="http-remoting-connector" thread-pool-name="default">
                <channel-creation-options>
                    <option name="MAX_OUTBOUND_MESSAGES" value="1234" type="remoting"/>
                </channel-creation-options>
            </remote>
            <thread-pools>
                <thread-pool name="default">
                    <max-threads count="10"/>
                    <keepalive-time time="60" unit="seconds"/>
                </thread-pool>
            </thread-pools>
            <default-security-domain value="other"/>
            <application-security-domains>
                <application-security-domain name="other" security-domain="ApplicationDomain"/>
            </application-security-domains>
            <default-missing-method-permissions-deny-access value="true"/>
            <statistics enabled="${wildfly.ejb3.statistics-enabled:${wildfly.statistics-enabled:false}}"/>
            <log-system-exceptions value="true"/>
        </subsystem>
        <subsystem xmlns="urn:wildfly:elytron:16.0" final-providers="combined-providers" disallowed-providers="OracleUcrypto">
            <providers>
                <aggregate-providers name="combined-providers">
                    <providers name="elytron"/>
                    <providers name="openssl"/>
                </aggregate-providers>
                <provider-loader name="elytron" module="org.wildfly.security.elytron"/>
                <provider-loader name="openssl" module="org.wildfly.openssl"/>
            </providers>
            <audit-logging>
                <file-audit-log name="local-audit" path="audit.log" relative-to="jboss.server.log.dir" format="JSON"/>
            </audit-logging>
            <security-domains>
                <security-domain name="ManagementDomain" default-realm="ManagementRealm" permission-mapper="default-permission-mapper">
                    <realm name="ManagementRealm" role-decoder="groups-to-roles"/>
                    <realm name="local" role-mapper="super-user-mapper"/>
                </security-domain>
                <security-domain name="ApplicationDomain" default-realm="ApplicationRealm" permission-mapper="default-permission-mapper">
                    <realm name="ApplicationRealm" role-decoder="groups-to-roles"/>
                    <realm name="local"/>
                </security-domain>
            </security-domains>
            <security-realms>
                <identity-realm name="local" identity="$local"/>
                <properties-realm name="ApplicationRealm">
                    <users-properties path="application-users.properties" relative-to="jboss.server.config.dir" digest-realm-name="ApplicationRealm"/>
                    <groups-properties path="application-roles.properties" relative-to="jboss.server.config.dir"/>
                </properties-realm>
                <properties-realm name="ManagementRealm">
                    <users-properties path="mgmt-users.properties" relative-to="jboss.server.config.dir" digest-realm-name="ManagementRealm"/>
                    <groups-properties path="mgmt-groups.properties" relative-to="jboss.server.config.dir"/>
                </properties-realm>
            </security-realms>
            <mappers>
                <simple-permission-mapper name="default-permission-mapper" mapping-mode="first">
                    <permission-mapping>
                        <principal name="anonymous"/>
                        <permission-set name="default-permissions"/>
                    </permission-mapping>
                    <permission-mapping match-all="true">
                        <permission-set name="login-permission"/>
                        <permission-set name="default-permissions"/>
                    </permission-mapping>
                </simple-permission-mapper>
                <constant-realm-mapper name="local" realm-name="local"/>
                <simple-role-decoder name="groups-to-roles" attribute="groups"/>
                <constant-role-mapper name="super-user-mapper">
                    <role name="SuperUser"/>
                </constant-role-mapper>
            </mappers>
            <permission-sets>
                <permission-set name="login-permission">
                    <permission class-name="org.wildfly.security.auth.permission.LoginPermission"/>
                </permission-set>
                <permission-set name="default-permissions">
                    <permission class-name="org.wildfly.extension.batch.jberet.deployment.BatchPermission" module="org.wildfly.extension.batch.jberet" target-name="*"/>
                    <permission class-name="org.wildfly.transaction.client.RemoteTransactionPermission" module="org.wildfly.transaction.client"/>
                    <permission class-name="org.jboss.ejb.client.RemoteEJBPermission" module="org.jboss.ejb-client"/>
                </permission-set>
            </permission-sets>
            <http>
                <http-authentication-factory name="management-http-authentication" security-domain="ManagementDomain" http-server-mechanism-factory="global">
                    <mechanism-configuration>
                        <mechanism mechanism-name="DIGEST">
                            <mechanism-realm realm-name="ManagementRealm"/>
                        </mechanism>
                    </mechanism-configuration>
                </http-authentication-factory>
                <http-authentication-factory name="application-http-authentication" security-domain="ApplicationDomain" http-server-mechanism-factory="global">
                    <mechanism-configuration>
                        <mechanism mechanism-name="BASIC">
                            <mechanism-realm realm-name="ApplicationRealm"/>
                        </mechanism>
                    </mechanism-configuration>
                </http-authentication-factory>
                <provider-http-server-mechanism-factory name="global"/>
            </http>
            <sasl>
                <sasl-authentication-factory name="management-sasl-authentication" sasl-server-factory="configured" security-domain="ManagementDomain">
                    <mechanism-configuration>
                        <mechanism mechanism-name="JBOSS-LOCAL-USER" realm-mapper="local"/>
                        <mechanism mechanism-name="DIGEST-MD5">
                            <mechanism-realm realm-name="ManagementRealm"/>
                        </mechanism>
                    </mechanism-configuration>
                </sasl-authentication-factory>
                <sasl-authentication-factory name="application-sasl-authentication" sasl-server-factory="configured" security-domain="ApplicationDomain">
                    <mechanism-configuration>
                        <mechanism mechanism-name="JBOSS-LOCAL-USER" realm-mapper="local"/>
                        <mechanism mechanism-name="DIGEST-MD5">
                            <mechanism-realm realm-name="ApplicationRealm"/>
                        </mechanism>
                    </mechanism-configuration>
                </sasl-authentication-factory>
                <configurable-sasl-server-factory name="configured" sasl-server-factory="elytron">
                    <properties>
                        <property name="wildfly.sasl.local-user.default-user" value="$local"/>
                        <property name="wildfly.sasl.local-user.challenge-path" value="${jboss.server.temp.dir}/auth"/>
                    </properties>
                </configurable-sasl-server-factory>
                <mechanism-provider-filtering-sasl-server-factory name="elytron" sasl-server-factory="global">
                    <filters>
                        <filter provider-name="WildFlyElytron"/>
                    </filters>
                </mechanism-provider-filtering-sasl-server-factory>
                <provider-sasl-server-factory name="global"/>
            </sasl>
            <tls>
                <key-stores>
                    <key-store name="applicationKS">
                        <credential-reference clear-text="password"/>
                        <implementation type="JKS"/>
                        <file path="application.keystore" relative-to="jboss.server.config.dir"/>
                    </key-store>
                </key-stores>
                <key-managers>
                    <key-manager name="applicationKM" key-store="applicationKS" generate-self-signed-certificate-host="localhost">
                        <credential-reference clear-text="password"/>
                    </key-manager>
                </key-managers>
                <server-ssl-contexts>
                    <server-ssl-context name="applicationSSC" key-manager="applicationKM"/>
                </server-ssl-contexts>
            </tls>
        </subsystem>
        ...
        <subsystem xmlns="urn:jboss:domain:jdr:1.0"/>
        <subsystem xmlns="urn:jboss:domain:jmx:1.3">
            <expose-resolved-model/>
            <expose-expression-model/>
            <remoting-connector/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:jpa:1.1">
            <jpa default-extended-persistence-inheritance="DEEP"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:jsf:1.1"/>
        <subsystem xmlns="urn:jboss:domain:mail:4.0">
            <mail-session name="default" jndi-name="java:jboss/mail/Default">
                <smtp-server outbound-socket-binding-ref="mail-smtp"/>
            </mail-session>
        </subsystem>
        <subsystem xmlns="urn:wildfly:metrics:1.0" security-enabled="false" exposed-subsystems="*" prefix="${wildfly.metrics.prefix:wildfly}"/>
        <subsystem xmlns="urn:wildfly:microprofile-config-smallrye:2.0"/>
        <subsystem xmlns="urn:wildfly:microprofile-jwt-smallrye:1.0"/>
        <subsystem xmlns="urn:wildfly:microprofile-opentracing-smallrye:3.0" default-tracer="jaeger">
            <jaeger-tracer name="jaeger">
                <sampler-configuration sampler-type="const" sampler-param="1.0"/>
            </jaeger-tracer>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:naming:2.0">
            <remote-naming/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:pojo:1.0"/>
        <subsystem xmlns="urn:jboss:domain:remoting:5.0">
            <http-connector name="http-remoting-connector" connector-ref="default" sasl-authentication-factory="application-sasl-authentication"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:request-controller:1.0"/>
        <subsystem xmlns="urn:jboss:domain:resource-adapters:6.1"/>
        <subsystem xmlns="urn:jboss:domain:sar:1.0"/>
        <subsystem xmlns="urn:jboss:domain:security-manager:1.0">
            <deployment-permissions>
                <maximum-set>
                    <permission class="java.security.AllPermission"/>
                </maximum-set>
            </deployment-permissions>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:transactions:6.0">
            <core-environment node-identifier="${jboss.tx.node.id:1}">
                <process-id>
                    <uuid/>
                </process-id>
            </core-environment>
            <recovery-environment socket-binding="txn-recovery-environment" status-socket-binding="txn-status-manager"/>
            <coordinator-environment statistics-enabled="${wildfly.transactions.statistics-enabled:${wildfly.statistics-enabled:false}}"/>
            <object-store path="tx-object-store" relative-to="jboss.server.data.dir"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:undertow:13.0" default-server="default-server" default-virtual-host="default-host" default-servlet-container="default" default-security-domain="other" statistics-enabled="${wildfly.undertow.statistics-enabled:${wildfly.statistics-enabled:false}}">
            <byte-buffer-pool name="default"/>
            <buffer-cache name="default"/>
            <server name="default-server">
                <http-listener name="default" socket-binding="http" redirect-socket="https" enable-http2="true"/>
                <https-listener name="https" socket-binding="https" ssl-context="applicationSSC" enable-http2="true"/>
                <host name="default-host" alias="localhost">
                    <location name="/" handler="welcome-content"/>
                    <http-invoker http-authentication-factory="application-http-authentication"/>
                </host>
            </server>
            <servlet-container name="default">
                <jsp-config/>
                <websockets/>
            </servlet-container>
            <handlers>
                <file name="welcome-content" path="${jboss.home.dir}/welcome-content"/>
            </handlers>
            <application-security-domains>
                <application-security-domain name="other" security-domain="ApplicationDomain"/>
            </application-security-domains>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:webservices:2.0" statistics-enabled="${wildfly.webservices.statistics-enabled:${wildfly.statistics-enabled:false}}">
            <wsdl-host>${jboss.bind.address:127.0.0.1}</wsdl-host>
            <endpoint-config name="Standard-Endpoint-Config"/>
            <endpoint-config name="Recording-Endpoint-Config">
                <pre-handler-chain name="recording-handlers" protocol-bindings="##SOAP11_HTTP ##SOAP11_HTTP_MTOM ##SOAP12_HTTP ##SOAP12_HTTP_MTOM">
                    <handler name="RecordingHandler" class="org.jboss.ws.common.invocation.RecordingServerHandler"/>
                </pre-handler-chain>
            </endpoint-config>
            <client-config name="Standard-Client-Config"/>
        </subsystem>
        <subsystem xmlns="urn:jboss:domain:weld:5.0"/>
    </profile>
    <interfaces>
        <interface name="management">
            <inet-address value="${jboss.bind.address.management:0.0.0.0}"/>
        </interface>
        <interface name="public">
            <inet-address value="${jboss.bind.address:0.0.0.0}"/>
        </interface>
    </interfaces>
    <socket-binding-group name="standard-sockets" default-interface="public" port-offset="${jboss.socket.binding.port-offset:0}">
        <socket-binding name="ajp" port="${jboss.ajp.port:8009}"/>
        <socket-binding name="http" port="${jboss.http.port:8081}"/>
        <socket-binding name="https" port="${jboss.https.port:8444}"/>
        <socket-binding name="management-http" interface="management" port="${jboss.management.http.port:9990}"/>
        <socket-binding name="management-https" interface="management" port="${jboss.management.https.port:9993}"/>
        <socket-binding name="txn-recovery-environment" port="4712"/>
        <socket-binding name="txn-status-manager" port="4713"/>
        <outbound-socket-binding name="mail-smtp">
            <remote-destination host="${jboss.mail.server.host:localhost}" port="${jboss.mail.server.port:25}"/>
        </outbound-socket-binding>
    </socket-binding-group>
</server>

I think the problem could be that the port 9990 is not open...

I checked if something is listening in 9990 using

netstat -tulpen | grep LISTEN

tcp 0 0 0.0.0.0:9990 0.0.0.0:* LISTEN 1612/java
Port 9990 is listening.

I used Plesk's Firewall tool. I added two rules, thinking maybe the firewall is blocking the port. I add "Allow incoming from all on port 9990/tcp" and "Allow outgoing to all on port 9990/tcp". Nothing happens, still getting 'timeout'.

If I use curl, I get root@bold-goldwasser# curl -i http://localhost:9990/console/index.html

HTTP/1.1 200 OK
Connection: keep-alive
Last-Modified: Tue, 08 Nov 2022 16:36:02 GMT
X-Frame-Options: SAMEORIGIN
Content-Length: 629
Content-Type: text/html
Accept-Ranges: bytes
Date: Wed, 04 Jan 2023 05:13:15 GMT

<!DOCTYPE html><html class="layout-pf layout-pf-fixed" lang="en"><head><title>HAL Management Console</title><meta charset="utf-8"><meta http-equiv="x-ua-compatible" content="ie=edge"><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="icon shortcut" type="image/x-icon" href="favicon.db74b3b0.ico"><link rel="apple-touch-icon" href="apple-touch-icon.fedc4af6.png"><link rel="stylesheet" href="dev.2f075eb1.css" media="screen"><script type="module" src="dev.eb69487b.js"></script><script src="dev.99716cd9.js" nomodule="" defer></script><script src="hal.nocache.js"></script></head><body> </body></html>

Looks like wildfly is running.

Running command nmap -p 9990 MyIP I get:

Starting Nmap 7.80 ( Nmap: the Network Mapper - Free Security Scanner ) at 2022-12-31 20:49 UTC
Nmap scan report for bold-goldwasser.MyIP.plesk.page (MyIP)
Host is up (0.00010s latency).
PORT STATE SERVICE
9990/tcp open osm-appsrvr

Running command iptables -L -n

Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:9990
Chain OUTPUT (policy DROP)
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:9990

Running netstat -tulpen

Proto Recv-Q Send-Q Local Address           Foreign Address         State       User       Inode      PID/Program name 
tcp        0      0 0.0.0.0:9990            0.0.0.0:*               LISTEN      990        38407      1612/java  

If someone had a similar situation I'll be glad if you can help me. Thanks!

I sit in a Tesla and translated this thread with Ai:

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Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.