Validate port range issue 24304

Author: edenduong

app/code/Magento/Paypal/etc/adminhtml/system/express_checkout.xml

@@ -124,7 +124,7 @@
                     <depends>
                         <field id="use_proxy">1</field>
                     </depends>
-                    <validate>validate-digits validate-zero-or-greater</validate>
+                    <validate>validate-digits validate-digits-range digits-range-0-65535</validate>
                 </field>
             </group>
             <field id="enable_express_checkout" translate="label" type="select" sortOrder="20" showInDefault="1" showInWebsite="1">

app/code/Magento/Paypal/etc/adminhtml/system/payflow_advanced.xml

@@ -76,7 +76,7 @@
                         <field id="use_proxy">1</field>
                     </depends>
                     <attribute type="shared">1</attribute>
-                    <validate>validate-digits validate-zero-or-greater</validate>
+                    <validate>validate-digits validate-digits-range digits-range-0-65535</validate>
                 </field>
                 <field id="payflow_advanced_info" showInDefault="1" showInWebsite="1" showInStore="1" sortOrder="100">
                     <frontend_model>Magento\Paypal\Block\Adminhtml\System\Config\Payflowlink\Advanced</frontend_model>

app/code/Magento/Paypal/etc/adminhtml/system/payflow_link.xml

@@ -77,7 +77,7 @@
                         <field id="use_proxy">1</field>
                     </depends>
                     <attribute type="shared">1</attribute>
-                    <validate>validate-digits validate-zero-or-greater</validate>
+                    <validate>validate-digits validate-digits-range digits-range-0-65535</validate>
                 </field>
                 <field id="payflowlink_info" showInDefault="1" showInWebsite="1" showInStore="1" sortOrder="90">
                     <frontend_model>Magento\Paypal\Block\Adminhtml\System\Config\Payflowlink\Info</frontend_model>

app/code/Magento/Paypal/etc/adminhtml/system/paypal_payflowpro.xml

@@ -72,7 +72,7 @@
                         <field id="use_proxy">1</field>
                     </depends>
                     <attribute type="shared">1</attribute>
-                    <validate>validate-digits validate-zero-or-greater</validate>
+                    <validate>validate-digits validate-digits-range digits-range-0-65535</validate>
                 </field>
             </group>
             <field id="enable_paypal_payflow" translate="label" type="select" sortOrder="20" showInDefault="1" showInWebsite="1">