{"id":443,"date":"2018-10-17T16:52:55","date_gmt":"2018-10-17T07:52:55","guid":{"rendered":"http:\/\/shinke1987.net\/?p=443"},"modified":"2019-08-17T13:13:00","modified_gmt":"2019-08-17T04:13:00","slug":"post-443","status":"publish","type":"post","link":"https:\/\/shinke1987.net\/?p=443","title":{"rendered":"VPN\u304c\u9045\u3044\u306e\u3067\u3001MTU\u3092\u8a2d\u5b9a\u3057\u3066\u6539\u5584\u3059\u308b\u3002"},"content":{"rendered":"\n

\u72b6\u6cc1<\/h2>\n\n\n\n

VPN\u3092\u4f7f\u3044\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u305f\u308a\u306e\u64cd\u4f5c\u304c\u3068\u306b\u304b\u304f\u9045\u3044\u3002
1\u3064\u306e\u8efd\u3044PDF\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u306e\u306b\u300130\u79d2\uff5e5\u5206\u307b\u3069\u304b\u304b\u308b\u3002<\/p>\n\n\n\n

OS\uff1aWindows10 Pro<\/p>\n\n\n\n

\u6700\u9069\u306aMTU\u3092\u8abf\u3079\u308b\u3002<\/h2>\n\n\n\n
ping -f -l 1372 -n 1 \u9069\u5f53\u306aLAN\u5185\u30c7\u30d0\u30a4\u30b9\u306eIP\u30a2\u30c9\u30ec\u30b9<\/pre><\/pre>\n\n\n\n
-f \uff1a\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u4e0d\u53ef\u306b\u8a2d\u5b9a\u3002
-l \uff1a\u9001\u4fe1\u3059\u308b\u30c7\u30fc\u30bf\u306e\u30b5\u30a4\u30ba\u3092\u8a2d\u5b9a\u3002\uff08\u4eca\u56de\u306f1372\uff09
-n \uff1aping\u3092\u9001\u4fe1\u3059\u308b\u56de\u6570\u3092\u8a2d\u5b9a\uff08\u4eca\u56de\u306f1\u56de\uff09<\/p>\n\n\n\n
\u4e0a\u306e\u30b3\u30de\u30f3\u30c9\u3067MTU\u3092\u8abf\u3079\u308b\u3002
\u8abf\u3079\u65b9\u306f-l\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u6307\u5b9a\u3059\u308b\u5024\u3092\u5897\u6e1b\u3055\u305b\u3066\u8abf\u3079\u308b\u3002<\/p>\n\n\n\n
\u4f8b\u3048\u3070\u3001MTU\u306e\u5024\u306b1500\u304c\u6700\u9069\u306a\u5834\u5408\u306f\u3001<\/p>\n\n\n\n
ping -f -l 1472 -n 1 \u9069\u5f53\u306aLAN\u5185\u30c7\u30d0\u30a4\u30b9\u306eIP\u30a2\u30c9\u30ec\u30b9<\/pre><\/pre>\n\n\n\n
\u304c\u6b63\u5e38\u306b\u901a\u308b\u3002<\/p>\n\n\n\n
\u8a08\u7b97\u5f0f\u306f
1500 = 8(byte)(ICMP\u30d8\u30c3\u30c0) + 20(byte)(IP\u30d8\u30c3\u30c0)
+ 1472(byte)(ping\u3067\u9001\u308b\u30c7\u30fc\u30bf\u306e\u30b5\u30a4\u30ba)
\u3068\u306a\u308b\u3002
\u5408\u8a0828byte\u306fping\u3092\u3084\u308b\u3068\u5fc5\u305a\u3064\u3044\u3066\u304f\u308b\u30d8\u30c3\u30c0\u306a\u306e\u3067\u3001
\u305d\u308c\u3092\u898b\u8d8a\u3057\u3066\u30b5\u30a4\u30ba\u3092\u6c7a\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n\n\n\n
\u901a\u5e38\u306a\u3089MTU\u306e\u5024\u304c1500\u306e\u305f\u3081\u3001<\/p>\n\n\n\n
ping -f -l 1472 -n 1 \u9069\u5f53\u306aLAN\u5185\u30c7\u30d0\u30a4\u30b9\u306eIP\u30a2\u30c9\u30ec\u30b9<\/pre><\/pre>\n\n\n\n
\u306f\u901a\u308b\u304c\u3001VPN\u7b49\u3067\u306fMTU\u304c\u3088\u308a\u5c0f\u3055\u3044\u5024\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n\n\n\n
\u305d\u306e\u969b\u306b\u3001-l\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u5024\u3092\u5c11\u3057\u305a\u3064\u5c0f\u3055\u304f\u3057\u3066\u3044\u304d\u3001
\u6700\u9069\u306aMTU\u306e\u5024\u3092\u8abf\u3079\u308b\u3002<\/p>\n\n\n\n
\u6700\u9069\u306aMTU\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/h2>\n\n\n\n
\u6700\u9069\u306aMTU\u5024\u304c\u308f\u304b\u3063\u305f\u3089\u3001
\n
netsh interface ipv4 show interface<\/pre>\n\u3067\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u4e00\u89a7\u3092\u8868\u793a\u3057\u3066\u3001Idx\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/p>\n\n\n\n
\u78ba\u8a8d\u5f8c\u3001<\/span>\n<\/p>\n\n\n
netsh interface ipv4 set interface \u78ba\u8a8d\u3057\u305fIdx mtu=\u8a2d\u5b9a\u3057\u305f\u3044MTU\u5024<\/pre>\n\n\n\n
\n\u3068\u3084\u3063\u3066\u3001MTU\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/p>\n\n\n\n
\u53c2\u8003\u753b\u50cf<\/h2>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n
\u3053\u306e\u753b\u50cf\u306f\u6307\u5b9a\u3057\u305f\u30b5\u30a4\u30ba\u306eping\u304c\u901a\u3089\u306a\u3044\u6642\u306e\u753b\u9762\u3002
<\/p>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n
\u3053\u306e\u753b\u50cf\u306f\u6307\u5b9a\u3057\u305f\u30b5\u30a4\u30ba\u306eping\u304c\u6b63\u5e38\u306b\u901a\u3063\u305f\u6642\u306e\u753b\u9762\u3002
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u72b6\u6cc1 VPN\u3092\u4f7f\u3044\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u305f\u308a\u306e\u64cd\u4f5c\u304c\u3068\u306b\u304b\u304f\u9045\u3044\u30021\u3064\u306e\u8efd\u3044PDF\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u306e\u306b\u300130\u79d2\uff5e5\u5206\u307b\u3069\u304b\u304b\u308b\u3002 OS\uff1aWindows10 Pro \u6700\u9069\u306aMTU\u3092\u8abf\u3079\u308b\u3002 ping -f -l 1372 -n 1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[65,64,17],"class_list":["post-443","post","type-post","status-publish","format-standard","hentry","category-windows","tag-mtu","tag-vpn","tag-windows"],"_links":{"self":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts\/443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=443"}],"version-history":[{"count":5,"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts\/443\/revisions"}],"predecessor-version":[{"id":540,"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts\/443\/revisions\/540"}],"wp:attachment":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}