--- title: Lab Meeting Minutes 2022/5/13 tags: lab_meeting --- > Outline > [TOC] --- # PERAL Lab Meeting - 時間:111 年 5 月 13 日 10:00 - 地點:[Online](https://meet.google.com/hyx-hvtx-kxm) - 出席者:吳坤熹老師、謝萬霖、周以恆、吳騰然、劉怡君、田蕙瑜、洪胤勛、丘世宇、莊才賢 - 會議主題: [Overcoming NAT And Firewall Connectivity Restrictions In Overlay Multicast](https://l.facebook.com/l.php?u=https%3A%2F%2Fdocs.google.com%2Fpresentation%2Fd%2F10hFB-csoiHpSs90CclPwdnIyK9WPhR5QkltuxNBovFM%2Fedit%3Fusp%3Dsharing%26fbclid%3DIwAR14_SR0ZBEUkgO7YnRZjUznkwPKIZ8qAn_ZC9MEYBF49KGwG7I9HI06yTg&h=AT1spSJ0pAgAspkiTGzIJSSvUVbhRUbRs5h2kDmVA-5HWhScwgv92xbdvae4bqus6GBvdlXrg5c8aUbnx616kMx2Gxvzx4T8zgmxv49CTiR9XPG5kuN9_w9kCl4_88VZG-Id9t8f2nElujRLK4Xo&__tn__=-UK-R&c[0]=AT3eXEynra6cWLuImeSrGV_YUoUGeKZMHLsBem9iwMvqsla7JqKocM3aTZAVPHb3YhKPC_W3BFPaFp4mllNSZPCrezxfHJFJ7SuXZmuoJgQ1a5ogBewFIsK7M61bfBVUNKJuwKNtS0OFvSpFSQ37iHJu4dHxu6AiKBHf_Yy4h-_VsYBgn2hjFYXWQpbcwyhz13XsRQZILGDmerpK2dY) - 主講者: 丘世宇 - 主記: 洪胤勛 ## 會議內容 - Background - 在防火牆或NAT後的host,可能無法與其他host聯繫 - solution: UPnP - Universal Plug and Play - 但還是有 NAT 或防火牆後的 hosts 無法直接被連線 - Host - Restricted Hosts - 只能對 Public Hosts 發起連線 - Public Hosts - 可以對兩者發起連線 - Solution - Strawman - Basic Contributor - Enhanc3ed Contributor ### 建議&問題 1. [name=萬霖] Basic Contributor 怎知道兩邊要連線 Ans: [name=] 2. [name=以恆] 架構圖要多一點 3. [name=才賢] TCP 跟 UDP 的 NAT 穿越差別 Ans: [name=世宇] 3. [name=才賢] multicast 不是只傳給 router 而已, 為什麼還需傳給其他成員 3. [name=胤勛] NAT 穿越會降到第幾層 3. [name=蕙瑜] Public Host 差別 ## 待追蹤事項 1. 補充 Overlay Multicast 的資料並與 IP Multicast 做一個簡單比較。[name=Edgar] ## 臨時動議 1. [name=] --- 散會結束時間:10:59
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