{"id":2798,"date":"2024-12-05T00:39:14","date_gmt":"2024-12-04T15:39:14","guid":{"rendered":"https:\/\/yasu2.prosou.nu\/blog\/?p=2798"},"modified":"2024-12-05T00:39:14","modified_gmt":"2024-12-04T15:39:14","slug":"freebsd-%e3%81%a7-pppoe-nat-2024%e5%b9%b4%e7%89%88","status":"publish","type":"post","link":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/2024\/12\/05\/2798\/","title":{"rendered":"FreeBSD \u3067 PPPoE + NAT (2024\u5e74\u7248)"},"content":{"rendered":"\n

\u8077\u5834\u306e\u30eb\u30fc\u30bf\u306f\u305a\u3063\u3068 FreeBSD \u306a\u306e\u3060\u3051\u3069\u3001\u81ea\u5b85\u306b\u65b0\u3057\u304f\u5165\u308c\u305f Wi-Fi \u30eb\u30fc\u30bf\u306e\u30eb\u30fc\u30bf\u3068\u3057\u3066\u306e\u6319\u52d5\u304c\u3069\u3046\u3082\u602a\u3057\u304b\u3063\u305f\u306e\u3067\u3001\u81ea\u5b85\u306e\u30eb\u30fc\u30bf\u3082\u3059\u3054\u304f\u4e45\u3057\u3076\u308a\u306b FreeBSD \u306b\u3059\u308b\u3053\u3068\u306b\u3057\u305f\u3002<\/p>\n\n\n\n

\u3067\u3001\u6614\u53d6\u3063\u305f\u6775\u67c4\u3067 PPPoE \u306e\u8a2d\u5b9a\u3092\u66f8\u3044\u3066\u3001natd \u3092\u8d77\u52d5\u3059\u308b\u3002\u30cf\u30de\u3063\u305f\u306e\u306f\u4ee5\u4e0b\u306e2\u70b9\u3002<\/p>\n\n\n\n

    \n
  1. \u306a\u3093\u304b\u4e00\u90e8\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u3064\u306a\u304c\u3089\u306a\u3044\u3057\u3001\u5916\u90e8\u3078 ssh \u3082\u3067\u304d\u306a\u3044<\/li>\n\n\n\n
  2. natd \u304c\u8d77\u52d5\u3059\u308b\u3068\u304d\u306b tun0 \u304c\u307e\u3060\u306a\u3044 (ppp \u306e\u8a8d\u8a3c\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u304b\u3089?) \u306e\u3067\u3001natd \u304c\u8d77\u52d5\u3057\u306a\u3044 <\/li>\n<\/ol>\n\n\n\n

    1 \u306f\u3084\u3063\u304b\u3044\u3060\u3063\u305f\u3001port 80 \u3078\u306e telnet \u3082\u901a\u308b\u3057\u3001openssl s_client -connect www.somewhere 80 \u307f\u305f\u3044\u306a\u306e\u3082\u901a\u308b\u3068\u3053\u308d\u306f\u901a\u308b\u3051\u3069\u3001\u901a\u3089\u306a\u3044\u3068\u3053\u308d\u306f “CONNECTED(00000005)” \u3068\u51fa\u305f\u3063\u304d\u308a\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3059\u308b\u307e\u3067\u4f55\u3082\u3067\u304d\u306a\u3044\u3002netstat \u3067\u307f\u308b\u3068 ESTABLISHED \u306b\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

    MTU discovery \u306e\u554f\u984c\u304b\u306a\u30fc\u3001\u3068\u304b\u601d\u3063\u305f\u306e\u3060\u304c\u3001FreeBSD \u306e PPPoE \u306b\u306f\u304b\u306a\u308a\u6614\u304b\u3089 TCP \u30d8\u30c3\u30c0\u306e mss \u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8abf\u6574\u3059\u308b\u6a5f\u80fd\u304c\u3064\u3044\u3066\u304a\u308a\u3001\u305d\u3093\u306a\u3053\u3068\u306f\u306a\u3044\u306f\u305a\u306a\u306e\u3060\u3002<\/p>\n\n\n\n

    \u3067\u3001FreeBSD \u30cf\u30f3\u30c9\u30d6\u30c3\u30af\u306e\u5f53\u8a72\u30bb\u30af\u30b7\u30e7\u30f3<\/a>\u3068\u304b\u3092\u773a\u3081\u3066\u3044\u308b\u3068\u3001”set mtu” \u3068\u304b “set mru” \u3068\u304b\u66f8\u3044\u3066\u306a\u3044\u306e\u3002\u3082\u3057\u304b\u3057\u3066\u3044\u307e\u3069\u304d\u81ea\u52d5\uff1f\u3068\u601d\u3063\u3066\u3001\u3053\u306e2\u884c\u3092\u6d88\u3057\u305f\u3089\u3042\u3063\u3055\u308a\u52d5\u3044\u305f\u3002<\/p>\n\n\n\n

    2. \u306f \/etc\/rc.d \u3067 natd_options \u306b “-dynamic” \u3092\u3064\u3051\u305f\u3089\u89e3\u6c7a\u3057\u305f\u3002\u3053\u308c\u3001\u52d5\u7684\u306b\u30a2\u30c9\u30ec\u30b9\u304c\u5909\u308f\u308b\u306e\u306b\u5bfe\u5fdc\u3059\u308b\u3060\u3051\u304b\u3068\u601d\u3063\u305f\u3089\u3001-n \u3067\u6307\u5b9a\u3057\u305f\u30a4\u30f3\u30bf\u30d5\u30a7\u30a4\u30b9\u304c\u52d5\u7684\u306b\u751f\u3048\u3066\u304f\u308b\u5834\u5408\u306b\u3082\u6c17\u9577\u306b\u5f85\u3063\u3066\u304f\u308c\u308b\u306e\u306d\u3002<\/p>\n\n\n\n

    \u3068\u3044\u3046\u308f\u3051\u3067\u89e3\u6c7a\u3067\u3059\u3002Wi-Fi \u30eb\u30fc\u30bf\u306f\u305f\u3060\u306e\u6709\u7dda-\u7121\u7dda\u30d6\u30ea\u30c3\u30b8\u306b\u306a\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u8077\u5834\u306e\u30eb\u30fc\u30bf\u306f\u305a\u3063\u3068 FreeBSD \u306a\u306e\u3060\u3051\u3069\u3001\u81ea\u5b85\u306b\u65b0\u3057\u304f\u5165\u308c\u305f Wi-Fi \u30eb\u30fc\u30bf\u306e\u30eb\u30fc\u30bf\u3068\u3057\u3066\u306e\u6319\u52d5\u304c\u3069\u3046\u3082\u602a\u3057\u304b\u3063\u305f\u306e\u3067\u3001\u81ea\u5b85\u306e\u30eb\u30fc\u30bf\u3082\u3059\u3054\u304f\u4e45\u3057\u3076\u308a\u306b FreeBSD \u306b\u3059\u308b\u3053\u3068\u306b\u3057\u305f\u3002 \u3067\u3001\u6614\u53d6\u3063\u305f\u6775\u67c4\u3067 … “FreeBSD \u3067 PPPoE + NAT (2024\u5e74\u7248)” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"federated","footnotes":""},"categories":[6],"tags":[16],"class_list":["post-2798","post","type-post","status-publish","format-standard","hentry","category-unix-","tag-freebsd"],"_links":{"self":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2798","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=2798"}],"version-history":[{"count":1,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2798\/revisions"}],"predecessor-version":[{"id":2799,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2798\/revisions\/2799"}],"wp:attachment":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=2798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=2798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=2798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}