Server : Apache System : Linux profile 3.10.0-1160.88.1.el7.x86_64 #1 SMP Tue Mar 7 15:41:52 UTC 2023 x86_64 User : apache ( 48) PHP Version : 8.0.28 Disable Function : NONE Directory :  /lib/firewalld/services/

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<?xml version="1.0" encoding="utf-8"?>
<service>
    <protocol value="gre"/>
    <module name="nf_conntrack_proto_gre"/>
</service>