{"rewrite":{"id":"r_fb4fceef45898a003bf3fb0a","clusterId":"c_06e3672a790e8604cbf0140e","slug":"free-tool-porthole-lets-steam-friends-join-game-servers-without-port-forwarding","model":"deepseek-v4-flash:free","headline":"Free Tool 'Porthole' Lets Steam Friends Join Game Servers Without Port Forwarding","summary":"SeStudio announced 'Porthole - Local Port Sharing', a free utility for Windows and Linux that lets Steam friends connect to dedicated game servers for 'Terraria' and Java 'Minecraft', or play LAN multiplayer remotely, without port forwarding or a global IP. It uses Steam network sharing and P2P or Valve relay. Release is Q3 2026.","whyItMatters":"The tool removes a common technical barrier for hosting game servers, making LAN-style play accessible to users in NAT or CGNAT environments like apartments or dorms.","webCardHtml":"\u003cp\u003eSeStudio announced \u0026#39;Porthole - Local Port Sharing\u0026#39;, a free PC utility that bypasses the need for router port forwarding or a public IP address when inviting Steam friends to game servers. The tool shares specified TCP/UDP ports over the Steam network, letting the host create a lobby that friends join via a share code or the Steam friends list. Connections run directly via P2P or through Valve\u0026#39;s relay network. It supports \u0026#39;Terraria\u0026#39; dedicated servers and the Java edition of \u0026#39;Minecraft\u0026#39;, as well as LAN multiplayer games. The developer targets users who cannot configure routers in apartments or dormitories. The Steam store page is live, and the release is planned for Q3 2026 on Windows and Linux.\u003c/p\u003e","blueskyPost":"Porthole routes through Steam's own relay, meaning even users behind strict NAT can host. That removes the single biggest friction point for self-hosted game servers.","twitterPost":"Porthole routes through Steam's relay, removing the biggest friction point for self-hosted game servers behind strict NAT.","threadsPost":"Porthole solves the NAT problem by routing through Steam's network sharing and relay. That means users behind strict firewalls can host without touching their router settings. For games like Terraria and Minecraft, this removes the single biggest barrier to self-hosting.","newsletterBlurb":"SeStudio announced 'Porthole - Local Port Sharing', a free utility that lets Steam friends connect to game servers without port forwarding or a public IP. It works for Terraria and Java Minecraft dedicated servers, as well as LAN multiplayer. The tool uses Steam network sharing and P2P or Valve relay. Release is Q3 2026 on Windows and Linux.","attributionJson":"[{\"source\":\"4Gamer.net\",\"url\":\"https://www.4gamer.net/games/026/G102614/20260721017/\",\"title\":\"Invite Steam Friends to Game Servers Like 'Terraria' Without Port Forwarding: Free Tool 'Porthole - Local Port Sharing' Launches in Q3 2026\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":3738,"outputTokens":590,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1784664593,"createdAt":"2026-07-21T20:02:01.000Z","publishedAt":"2026-07-21T20:05:45.000Z","updatedAt":"2026-07-21T20:02:01.000Z"},"cluster":{"id":"c_06e3672a790e8604cbf0140e","canonicalTitle":"ポート開放なしで「テラリア」などのゲームサーバーにSteamフレンドを招待。無料ツール「Porthole - Local Port Sharing」が2026年第3四半期に登場","representativeArticleId":"a_d563c20539247eb952c9e3f1","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Terraria\",\"Porthole - Local Port Sharing\"],\"studios\":[],\"people\":[],\"type\":\"announcement\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-07-21T04:02:48.000Z","lastSeenAt":"2026-07-21T04:02:48.000Z","updatedAt":"2026-07-21T20:05:45.000Z"},"attribution":[{"source":"4Gamer.net","url":"https://www.4gamer.net/games/026/G102614/20260721017/","title":"ポート開放なしで「テラリア」などのゲームサーバーにSteamフレンドを招待。無料ツール「Porthole - Local Port Sharing」が2026年第3四半期に登場"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Terraria","Porthole - Local Port Sharing"],"studios":[],"people":[],"type":"announcement","domain":"games","is_roundup":false},"keyFacts":null}