Como ligar as portas abertas aleatórias do IntelliJ IDEA apenas ao localhost?

Quando executo o IntelliJ IDEA 2018.2.4 (edição Ultimate ou Community) no macOS, observo que três portas aleatórias estão abertas em todas as interfaces de rede (eth0, lo, …). Uma porta aleatória é aberta pelo processo de ideia e as outras duas portas são abertas por um processo java diferente lançado pelo IntelliJ IDEA.

Eu removi o único plugin que eu instalei explicitamente, que é o SonarLint.

O depurador que está sendo executado na porta 63342 é vinculado ao host local e isso pode ser configurado no menu Preferências.

Aqui está a parte relevante da saída de lsof -i | grep LISTEN lsof -i | grep LISTEN :

  idea 3328 orto 187u IPv4 0x3c332685aa6872fd 0t0 TCP localhost:6942 (LISTEN) idea 3328 orto 686u IPv4 0x3c332685aa623815 0t0 TCP localhost:63342 (LISTEN) idea 3328 orto 752u IPv4 0x3c332685aa676de5 0t0 TCP *:53212 (LISTEN) java 3341 orto 33u IPv6 0x3c332685aa5f899d 0t0 TCP *:61070 (LISTEN) java 3341 orto 77u IPv6 0x3c332685b9885edd 0t0 TCP *:53210 (LISTEN) 

Como perguntado, aqui está a parte relevante do ps -ef | grep 3341 ps -ef | grep 3341 (é um RemoteMavenServer):

 /Applications/IntelliJ IDEA.app/Contents/jdk/Contents/Home/jre/bin/java -d64 -Djava.awt.headless=true -Didea.version==2017.1.1 -Xmx768m -Didea.maven.embedder.version=3.3.9 -Dfile.encoding=UTF-8 -classpath /Applications/IntelliJ IDEA.app/Contents/lib/resources_en.jar:/Applications/IntelliJ IDEA.app/Contents/lib/log4j.jar:/Applications/IntelliJ IDEA.app/Contents/lib/snappy-in-java-0.5.1.jar:/Applications/IntelliJ IDEA.app/Contents/lib/jna.jar:/Applications/IntelliJ IDEA.app/Contents/lib/jna-platform.jar:/Applications/IntelliJ IDEA.app/Contents/lib/annotations.jar:/Applications/IntelliJ IDEA.app/Contents/lib/oromatcher.jar:/Applications/IntelliJ IDEA.app/Contents/lib/trove4j.jar:/Applications/IntelliJ IDEA.app/Contents/lib/util.jar:/Applications/IntelliJ IDEA.app/Contents/lib/jdom.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/lucene-core-2.4.1.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven-server-api.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-common.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-lib/archetype-catalog-2.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-lib/archetype-common-2.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-lib/maven-dependency-tree-1.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-lib/nexus-indexer-3.0.4.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-lib/nexus-indexer-artifact-1.0.1.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3-server-impl.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aether-api-1.0.2.v20150114.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aether-connector-basic-1.0.2.v20150114.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aether-impl-1.0.2.v20150114.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aether-spi-1.0.2.v20150114.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aether-transport-wagon-1.0.2.v20150114.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aether-util-1.0.2.v20150114.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/aopalliance-1.0.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/cdi-api-1.0.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/commons-cli-1.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/commons-io-2.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/commons-lang-2.6.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/commons-lang3-3.4.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/guava-18.0.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/guice-4.0-no_aop.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/javax.inject-1.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/jsoup-1.7.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/jsr250-api-1.0.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-aether-provider-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-artifact-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-builder-support-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-compat-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-core-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-embedder-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-model-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-model-builder-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-plugin-api-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-repository-metadata-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-settings-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/maven-settings-builder-3.3.9.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/org.eclipse.sisu.inject-0.3.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/org.eclipse.sisu.plexus-0.3.2.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/plexus-cipher-1.7.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/plexus-component-annotations-1.6.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/plexus-interpolation-1.21.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/plexus-sec-dispatcher-1.3.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/plexus-utils-3.0.22.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/slf4j-api-1.7.5.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/slf4j-simple-1.7.5.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/wagon-file-2.10.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/wagon-http-2.10-shaded.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/wagon-http-shared-2.10.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/lib/wagon-provider-api-2.10.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/boot/plexus-classworlds-2.5.2.jar org.jetbrains.idea.maven.server.RemoteMavenServer 

Como ligar essas três portas abertas aleatórias ao localhost?

PS: Estou usando a versão macos.

PS2: Um problema foi criado aqui: https://youtrack.jetbrains.com/issue/IDEA-175889 .