Elasticsearch opening around 200 ports to communicate internally in single node setup beside http and tcp port configured

Elastic Stack Elasticsearch
1

Elasticsearch is opening many ports to communicate with itself, in a single-node setup.
Is this the expected behavior?
If yes kindly mention why around 100 connections established within itself?
I tested with various versions of Elasticsearch, results same.
Below is the output of netstat -ano | findstr PID for ES 6.5.4

  TCP    0.0.0.0:9222           0.0.0.0:0              LISTENING       6824
  TCP    0.0.0.0:9322           0.0.0.0:0              LISTENING       6824
  TCP    127.0.0.1:50085        127.0.0.1:50086        ESTABLISHED     6824
  TCP    127.0.0.1:50086        127.0.0.1:50085        ESTABLISHED     6824
  TCP    127.0.0.1:50087        127.0.0.1:50088        ESTABLISHED     6824
  TCP    127.0.0.1:50088        127.0.0.1:50087        ESTABLISHED     6824
  TCP    127.0.0.1:50089        127.0.0.1:50090        ESTABLISHED     6824
  TCP    127.0.0.1:50090        127.0.0.1:50089        ESTABLISHED     6824
  TCP    127.0.0.1:50091        127.0.0.1:50092        ESTABLISHED     6824
  TCP    127.0.0.1:50092        127.0.0.1:50091        ESTABLISHED     6824
  TCP    127.0.0.1:50093        127.0.0.1:50094        ESTABLISHED     6824
  TCP    127.0.0.1:50094        127.0.0.1:50093        ESTABLISHED     6824
  TCP    127.0.0.1:50095        127.0.0.1:50096        ESTABLISHED     6824
  TCP    127.0.0.1:50096        127.0.0.1:50095        ESTABLISHED     6824
  TCP    127.0.0.1:50097        127.0.0.1:50098        ESTABLISHED     6824
  TCP    127.0.0.1:50098        127.0.0.1:50097        ESTABLISHED     6824
  TCP    127.0.0.1:50099        127.0.0.1:50100        ESTABLISHED     6824
  TCP    127.0.0.1:50100        127.0.0.1:50099        ESTABLISHED     6824
  TCP    127.0.0.1:50101        127.0.0.1:50102        ESTABLISHED     6824
  TCP    127.0.0.1:50102        127.0.0.1:50101        ESTABLISHED     6824
  TCP    127.0.0.1:50103        127.0.0.1:50104        ESTABLISHED     6824
  TCP    127.0.0.1:50104        127.0.0.1:50103        ESTABLISHED     6824
  TCP    127.0.0.1:50105        127.0.0.1:50106        ESTABLISHED     6824
  TCP    127.0.0.1:50106        127.0.0.1:50105        ESTABLISHED     6824
  TCP    127.0.0.1:50107        127.0.0.1:50108        ESTABLISHED     6824
  TCP    127.0.0.1:50108        127.0.0.1:50107        ESTABLISHED     6824
  TCP    127.0.0.1:50109        127.0.0.1:50110        ESTABLISHED     6824
  TCP    127.0.0.1:50110        127.0.0.1:50109        ESTABLISHED     6824
  TCP    127.0.0.1:50111        127.0.0.1:50112        ESTABLISHED     6824
  TCP    127.0.0.1:50112        127.0.0.1:50111        ESTABLISHED     6824
  TCP    127.0.0.1:50113        127.0.0.1:50114        ESTABLISHED     6824
  TCP    127.0.0.1:50114        127.0.0.1:50113        ESTABLISHED     6824
  TCP    127.0.0.1:50115        127.0.0.1:50116        ESTABLISHED     6824
  TCP    127.0.0.1:50116        127.0.0.1:50115        ESTABLISHED     6824
  TCP    127.0.0.1:50117        127.0.0.1:50118        ESTABLISHED     6824
  TCP    127.0.0.1:50118        127.0.0.1:50117        ESTABLISHED     6824
  TCP    127.0.0.1:50119        127.0.0.1:50120        ESTABLISHED     6824
  TCP    127.0.0.1:50120        127.0.0.1:50119        ESTABLISHED     6824
  TCP    127.0.0.1:50121        127.0.0.1:50122        ESTABLISHED     6824
  TCP    127.0.0.1:50122        127.0.0.1:50121        ESTABLISHED     6824
  TCP    127.0.0.1:50123        127.0.0.1:50124        ESTABLISHED     6824
  TCP    127.0.0.1:50124        127.0.0.1:50123        ESTABLISHED     6824
  TCP    127.0.0.1:50125        127.0.0.1:50126        ESTABLISHED     6824
  TCP    127.0.0.1:50126        127.0.0.1:50125        ESTABLISHED     6824
  TCP    127.0.0.1:50127        127.0.0.1:50128        ESTABLISHED     6824
  TCP    127.0.0.1:50128        127.0.0.1:50127        ESTABLISHED     6824
  TCP    127.0.0.1:50129        127.0.0.1:50130        ESTABLISHED     6824
  TCP    127.0.0.1:50130        127.0.0.1:50129        ESTABLISHED     6824
  TCP    127.0.0.1:50131        127.0.0.1:50132        ESTABLISHED     6824
  TCP    127.0.0.1:50132        127.0.0.1:50131        ESTABLISHED     6824
  TCP    127.0.0.1:50133        127.0.0.1:50134        ESTABLISHED     6824
  TCP    127.0.0.1:50134        127.0.0.1:50133        ESTABLISHED     6824
  TCP    127.0.0.1:50135        127.0.0.1:50136        ESTABLISHED     6824
  TCP    127.0.0.1:50136        127.0.0.1:50135        ESTABLISHED     6824
  TCP    127.0.0.1:50137        127.0.0.1:50138        ESTABLISHED     6824
  TCP    127.0.0.1:50138        127.0.0.1:50137        ESTABLISHED     6824
  TCP    127.0.0.1:50139        127.0.0.1:50140        ESTABLISHED     6824
  TCP    127.0.0.1:50140        127.0.0.1:50139        ESTABLISHED     6824
  TCP    127.0.0.1:50141        127.0.0.1:50142        ESTABLISHED     6824
  TCP    127.0.0.1:50142        127.0.0.1:50141        ESTABLISHED     6824
  TCP    127.0.0.1:50143        127.0.0.1:50144        ESTABLISHED     6824
  TCP    127.0.0.1:50144        127.0.0.1:50143        ESTABLISHED     6824
  TCP    127.0.0.1:50145        127.0.0.1:50146        ESTABLISHED     6824
  TCP    127.0.0.1:50146        127.0.0.1:50145        ESTABLISHED     6824
  TCP    127.0.0.1:50147        127.0.0.1:50148        ESTABLISHED     6824
  TCP    127.0.0.1:50148        127.0.0.1:50147        ESTABLISHED     6824
  TCP    127.0.0.1:50149        127.0.0.1:50150        ESTABLISHED     6824
  TCP    127.0.0.1:50150        127.0.0.1:50149        ESTABLISHED     6824
  TCP    127.0.0.1:50151        127.0.0.1:50152        ESTABLISHED     6824
  TCP    127.0.0.1:50152        127.0.0.1:50151        ESTABLISHED     6824
  TCP    127.0.0.1:50153        127.0.0.1:50154        ESTABLISHED     6824
  TCP    127.0.0.1:50154        127.0.0.1:50153        ESTABLISHED     6824
  TCP    127.0.0.1:50155        127.0.0.1:50156        ESTABLISHED     6824
  TCP    127.0.0.1:50156        127.0.0.1:50155        ESTABLISHED     6824
  TCP    127.0.0.1:50157        127.0.0.1:50158        ESTABLISHED     6824
  TCP    127.0.0.1:50158        127.0.0.1:50157        ESTABLISHED     6824
  TCP    127.0.0.1:50159        127.0.0.1:50160        ESTABLISHED     6824
  TCP    127.0.0.1:50160        127.0.0.1:50159        ESTABLISHED     6824
  TCP    127.0.0.1:50161        127.0.0.1:50162        ESTABLISHED     6824
  TCP    127.0.0.1:50162        127.0.0.1:50161        ESTABLISHED     6824
  TCP    127.0.0.1:50163        127.0.0.1:50164        ESTABLISHED     6824
  TCP    127.0.0.1:50164        127.0.0.1:50163        ESTABLISHED     6824
  TCP    127.0.0.1:50165        127.0.0.1:50166        ESTABLISHED     6824
  TCP    127.0.0.1:50166        127.0.0.1:50165        ESTABLISHED     6824
  TCP    127.0.0.1:50167        127.0.0.1:50168        ESTABLISHED     6824
  TCP    127.0.0.1:50168        127.0.0.1:50167        ESTABLISHED     6824
  TCP    127.0.0.1:50169        127.0.0.1:50170        ESTABLISHED     6824
  TCP    127.0.0.1:50170        127.0.0.1:50169        ESTABLISHED     6824
  TCP    127.0.0.1:50171        127.0.0.1:50172        ESTABLISHED     6824
  TCP    127.0.0.1:50172        127.0.0.1:50171        ESTABLISHED     6824
  TCP    127.0.0.1:50173        127.0.0.1:50174        ESTABLISHED     6824
  TCP    127.0.0.1:50174        127.0.0.1:50173        ESTABLISHED     6824
  TCP    127.0.0.1:50175        127.0.0.1:50176        ESTABLISHED     6824
  TCP    127.0.0.1:50176        127.0.0.1:50175        ESTABLISHED     6824
  TCP    127.0.0.1:50177        127.0.0.1:50178        ESTABLISHED     6824
  TCP    127.0.0.1:50178        127.0.0.1:50177        ESTABLISHED     6824
  TCP    127.0.0.1:50179        127.0.0.1:50180        ESTABLISHED     6824
  TCP    127.0.0.1:50180        127.0.0.1:50179        ESTABLISHED     6824
  TCP    127.0.0.1:50181        127.0.0.1:50182        ESTABLISHED     6824
  TCP    127.0.0.1:50182        127.0.0.1:50181        ESTABLISHED     6824
  TCP    127.0.0.1:50183        127.0.0.1:50184        ESTABLISHED     6824
  TCP    127.0.0.1:50184        127.0.0.1:50183        ESTABLISHED     6824
  TCP    127.0.0.1:50185        127.0.0.1:50186        ESTABLISHED     6824
  TCP    127.0.0.1:50186        127.0.0.1:50185        ESTABLISHED     6824
  TCP    127.0.0.1:50187        127.0.0.1:50188        ESTABLISHED     6824
  TCP    127.0.0.1:50188        127.0.0.1:50187        ESTABLISHED     6824
  TCP    127.0.0.1:50189        127.0.0.1:50190        ESTABLISHED     6824
  TCP    127.0.0.1:50190        127.0.0.1:50189        ESTABLISHED     6824
  TCP    127.0.0.1:50191        127.0.0.1:50192        ESTABLISHED     6824
  TCP    127.0.0.1:50192        127.0.0.1:50191        ESTABLISHED     6824
  TCP    127.0.0.1:50193        127.0.0.1:50194        ESTABLISHED     6824
  TCP    127.0.0.1:50194        127.0.0.1:50193        ESTABLISHED     6824
  TCP    127.0.0.1:50195        127.0.0.1:50196        ESTABLISHED     6824
  TCP    127.0.0.1:50196        127.0.0.1:50195        ESTABLISHED     6824
  TCP    127.0.0.1:50197        127.0.0.1:50198        ESTABLISHED     6824
  TCP    127.0.0.1:50198        127.0.0.1:50197        ESTABLISHED     6824
  TCP    127.0.0.1:50199        127.0.0.1:50200        ESTABLISHED     6824
  TCP    127.0.0.1:50200        127.0.0.1:50199        ESTABLISHED     6824
  TCP    127.0.0.1:50201        127.0.0.1:50202        ESTABLISHED     6824
  TCP    127.0.0.1:50202        127.0.0.1:50201        ESTABLISHED     6824
  TCP    127.0.0.1:50203        127.0.0.1:50204        ESTABLISHED     6824
  TCP    127.0.0.1:50204        127.0.0.1:50203        ESTABLISHED     6824
  TCP    127.0.0.1:50205        127.0.0.1:50206        ESTABLISHED     6824
  TCP    127.0.0.1:50206        127.0.0.1:50205        ESTABLISHED     6824
  TCP    127.0.0.1:50207        127.0.0.1:50208        ESTABLISHED     6824
  TCP    127.0.0.1:50208        127.0.0.1:50207        ESTABLISHED     6824
  TCP    127.0.0.1:50209        127.0.0.1:50210        ESTABLISHED     6824
  TCP    127.0.0.1:50210        127.0.0.1:50209        ESTABLISHED     6824
  TCP    127.0.0.1:50211        127.0.0.1:50212        ESTABLISHED     6824
  TCP    127.0.0.1:50212        127.0.0.1:50211        ESTABLISHED     6824
  TCP    127.0.0.1:50216        127.0.0.1:50217        ESTABLISHED     6824
  TCP    127.0.0.1:50217        127.0.0.1:50216        ESTABLISHED     6824
  TCP    127.0.0.1:50218        127.0.0.1:50219        ESTABLISHED     6824
  TCP    127.0.0.1:50219        127.0.0.1:50218        ESTABLISHED     6824
  TCP    127.0.0.1:50220        127.0.0.1:50221        ESTABLISHED     6824
  TCP    127.0.0.1:50221        127.0.0.1:50220        ESTABLISHED     6824
  TCP    127.0.0.1:50222        127.0.0.1:50223        ESTABLISHED     6824
  TCP    127.0.0.1:50223        127.0.0.1:50222        ESTABLISHED     6824
  TCP    127.0.0.1:50224        127.0.0.1:50225        ESTABLISHED     6824
  TCP    127.0.0.1:50225        127.0.0.1:50224        ESTABLISHED     6824
  TCP    127.0.0.1:50226        127.0.0.1:50227        ESTABLISHED     6824
  TCP    127.0.0.1:50227        127.0.0.1:50226        ESTABLISHED     6824
  TCP    127.0.0.1:50228        127.0.0.1:50229        ESTABLISHED     6824
  TCP    127.0.0.1:50229        127.0.0.1:50228        ESTABLISHED     6824
  TCP    127.0.0.1:50230        127.0.0.1:50231        ESTABLISHED     6824
  TCP    127.0.0.1:50231        127.0.0.1:50230        ESTABLISHED     6824
  TCP    127.0.0.1:50232        127.0.0.1:50233        ESTABLISHED     6824
  TCP    127.0.0.1:50233        127.0.0.1:50232        ESTABLISHED     6824
  TCP    127.0.0.1:50234        127.0.0.1:50235        ESTABLISHED     6824
  TCP    127.0.0.1:50235        127.0.0.1:50234        ESTABLISHED     6824
  TCP    127.0.0.1:50236        127.0.0.1:50237        ESTABLISHED     6824
  TCP    127.0.0.1:50237        127.0.0.1:50236        ESTABLISHED     6824
  TCP    127.0.0.1:50238        127.0.0.1:50239        ESTABLISHED     6824
  TCP    127.0.0.1:50239        127.0.0.1:50238        ESTABLISHED     6824
  TCP    127.0.0.1:50240        127.0.0.1:50241        ESTABLISHED     6824
  TCP    127.0.0.1:50241        127.0.0.1:50240        ESTABLISHED     6824
  TCP    127.0.0.1:50242        127.0.0.1:50243        ESTABLISHED     6824
  TCP    127.0.0.1:50243        127.0.0.1:50242        ESTABLISHED     6824
  TCP    127.0.0.1:50244        127.0.0.1:50245        ESTABLISHED     6824
  TCP    127.0.0.1:50245        127.0.0.1:50244        ESTABLISHED     6824
  TCP    127.0.0.1:50246        127.0.0.1:50247        ESTABLISHED     6824
  TCP    127.0.0.1:50247        127.0.0.1:50246        ESTABLISHED     6824
  TCP    127.0.0.1:50248        127.0.0.1:50249        ESTABLISHED     6824
  TCP    127.0.0.1:50249        127.0.0.1:50248        ESTABLISHED     6824
  TCP    127.0.0.1:50250        127.0.0.1:50251        ESTABLISHED     6824
  TCP    127.0.0.1:50251        127.0.0.1:50250        ESTABLISHED     6824
  TCP    127.0.0.1:50252        127.0.0.1:50253        ESTABLISHED     6824
  TCP    127.0.0.1:50253        127.0.0.1:50252        ESTABLISHED     6824
  TCP    127.0.0.1:50254        127.0.0.1:50255        ESTABLISHED     6824
  TCP    127.0.0.1:50255        127.0.0.1:50254        ESTABLISHED     6824
  TCP    127.0.0.1:50256        127.0.0.1:50257        ESTABLISHED     6824
  TCP    127.0.0.1:50257        127.0.0.1:50256        ESTABLISHED     6824
  TCP    127.0.0.1:50258        127.0.0.1:50259        ESTABLISHED     6824
  TCP    127.0.0.1:50259        127.0.0.1:50258        ESTABLISHED     6824
  TCP    127.0.0.1:50260        127.0.0.1:50261        ESTABLISHED     6824
  TCP    127.0.0.1:50261        127.0.0.1:50260        ESTABLISHED     6824
  TCP    127.0.0.1:50262        127.0.0.1:50263        ESTABLISHED     6824
  TCP    127.0.0.1:50263        127.0.0.1:50262        ESTABLISHED     6824
  TCP    127.0.0.1:50264        127.0.0.1:50265        ESTABLISHED     6824
  TCP    127.0.0.1:50265        127.0.0.1:50264        ESTABLISHED     6824
  TCP    127.0.0.1:50266        127.0.0.1:50267        ESTABLISHED     6824
  TCP    127.0.0.1:50267        127.0.0.1:50266        ESTABLISHED     6824
  TCP    127.0.0.1:50268        127.0.0.1:50269        ESTABLISHED     6824
  TCP    127.0.0.1:50269        127.0.0.1:50268        ESTABLISHED     6824
  TCP    127.0.0.1:50270        127.0.0.1:50271        ESTABLISHED     6824
  TCP    127.0.0.1:50271        127.0.0.1:50270        ESTABLISHED     6824
  TCP    127.0.0.1:50272        127.0.0.1:50273        ESTABLISHED     6824
  TCP    127.0.0.1:50273        127.0.0.1:50272        ESTABLISHED     6824
  TCP    127.0.0.1:50274        127.0.0.1:50275        ESTABLISHED     6824
  TCP    127.0.0.1:50275        127.0.0.1:50274        ESTABLISHED     6824
  TCP    127.0.0.1:50276        127.0.0.1:50277        ESTABLISHED     6824
  TCP    127.0.0.1:50277        127.0.0.1:50276        ESTABLISHED     6824
  TCP    127.0.0.1:50278        127.0.0.1:50279        ESTABLISHED     6824
  TCP    127.0.0.1:50279        127.0.0.1:50278        ESTABLISHED     6824
  TCP    [::]:9222              [::]:0                 LISTENING       6824
  TCP    [::]:9322              [::]:0                 LISTENING       6824
2

Oof this is an ancient version, it went EOL several years ago. You need to upgrade as a matter of urgency. If you can reproduce this in a supported version then let us know and we can investigate further.