WAN-facing web server inaccessible from LAN - Teh Forum

<body> <div id="header"> <span class="left"> <span class="back"><a href="lthread_list.php?webtag=DEFAULT"><span class="image mobile_back" title="Back"></span></a></span> <span class="image mobile_logo" title="Beehive Forum Logo"></span> </span> <ul> <li> <a class="reply_all" href="lpost.php?webtag=DEFAULT&reply_to=42846.0&return_msg=42846.24"> <span class="image mobile_reply_all"></span><span class="text">Reply to All</span> </a> </li> <li> <a class="navigation" href="#"> <span class="image mobile_navigation"></span><span class="text">Show messages</span> </a> </li> <li> <a class="main" href="#"><span class="image mobile_menu" title="Menu"></span> </a> </li> </ul> </div> <div class="menu main"> <ul> <li><a href="lthread_list.php?webtag=DEFAULT">Messages</a></li> <li><a href="lpm.php?webtag=DEFAULT">Inbox</a></li> <li><a href="lsearch.php?webtag=DEFAULT">Search</a></li> <li><a href="llogon.php?webtag=DEFAULT">Login</a></li> </ul> </div> <div class="menu navigation"><a href="lmessages.php?webtag=DEFAULT&msg=42846.1">1–10</a><a href="lmessages.php?webtag=DEFAULT&msg=42846.11">11–20</a><a href="lmessages.php?webtag=DEFAULT&msg=42846.21">21–24</a></div> <div id="page_content"> <h3 class="thread_title"><a href="index.php?webtag=DEFAULT&amp;msg=42846.24">WAN-facing web server inaccessible from LAN</a> </h3> <div id="messages" data-navigation="42846_24_24_10"> <a name="a42846_24"></a><div class="message" id="message_42846_24"> <div class="message_header"> <div class="message_from"> From: CHYRON (DSMITHHFX)<span class="message_time"> 4 Feb 2022 15:02</span> <div class="clearer"></div> </div><div class="message_to">To: patch <span><span class="image post_read" title="Read: 4 Feb 2022 16:52"></span></span> <span class="message_count">24 of 24</span><div class="clearer"></div> </div> </div> <div class="message_links"> <a href="lmessages.php?webtag=DEFAULT&msg=42846.24">42846.24</a> In reply to <a href="lmessages.php?webtag=DEFAULT&msg=42846.23">42846.23</a></div> <div class="message_body"> The 8081 patch (no relation) worked outta the box [*by LAN IP, not domain] <span class="emoticon e_fail" title="(fail)"><span class="e__">(fail)</span></span> <br /> <br /> I will revisit your sage advice in future!</div> <div class="message_footer"> <div class="message_footer_links"><a href="lpost.php?webtag=DEFAULT&reply_to=42846.24&return_msg=42846.24" class="reply"><span class="image post"></span>Reply</a></div> <div class="message_vote_form" data-msg="42846.24"> <span class="rating">0/0</span> <span class="image vote vote_down vote_down_off" title="Vote Down"></span> <span class="image vote vote_up vote_up_off" title="Vote Up"></span> </div> </div> </div></div> </div> </body>