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xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 15px; margin-left: 421px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">VPN\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/div><\/div><\/div><\/foreignObject><text x=\"490\" y=\"20\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">VPN\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/text><\/switch><\/g><rect x=\"230\" y=\"24\" width=\"120\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 39px; margin-left: 231px;\"><div data-drawio-colors=\"color: #0000FF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 255); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">10.8.0.0\/24<\/div><\/div><\/div><\/foreignObject><text x=\"290\" y=\"44\" fill=\"#0000FF\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">10.8.0.0\/24<\/text><\/switch><\/g><rect x=\"160\" y=\"26\" width=\"30\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 41px; margin-left: 161px;\"><div data-drawio-colors=\"color: #0000FF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 255); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">.1<\/div><\/div><\/div><\/foreignObject><text x=\"175\" y=\"46\" fill=\"#0000FF\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">.1<\/text><\/switch><\/g><rect x=\"380\" y=\"27\" width=\"30\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 42px; margin-left: 381px;\"><div data-drawio-colors=\"color: #0000FF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 255); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">.6<\/div><\/div><\/div><\/foreignObject><text x=\"395\" y=\"47\" fill=\"#0000FF\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">.6<\/text><\/switch><\/g><path d=\"M 274.07 -49.69 C 274.07 -57.97 278.69 -64.69 284.38 -64.69 C 287.11 -64.69 289.74 -63.11 291.67 -60.3 C 293.6 -57.48 294.69 -53.67 294.69 -49.69 L 294.69 176.56 C 294.69 184.84 290.07 191.56 284.38 191.56 C 278.69 191.56 274.07 184.84 274.07 176.56 Z\" fill-opacity=\"0.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" stroke-opacity=\"0.5\" stroke-width=\"2\" stroke-miterlimit=\"10\" transform=\"rotate(90,284.38,63.43)\" pointer-events=\"all\"\/><path d=\"M 294.69 -49.69 C 294.69 -41.41 290.07 -34.69 284.38 -34.69 C 278.69 -34.69 274.07 -41.41 274.07 -49.69\" fill=\"none\" stroke=\"rgb(0, 0, 0)\" stroke-opacity=\"0.5\" stroke-width=\"2\" stroke-miterlimit=\"10\" transform=\"rotate(90,284.38,63.43)\" pointer-events=\"all\"\/><rect x=\"230\" y=\"80\" width=\"120\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 95px; margin-left: 231px;\"><div data-drawio-colors=\"color: #0000FF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 255); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/div><\/div><\/div><\/foreignObject><text x=\"290\" y=\"100\" fill=\"#0000FF\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/text><\/switch><\/g><rect x=\"637\" y=\"30\" width=\"120\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 45px; margin-left: 638px;\"><div data-drawio-colors=\"color: #000000; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">10.1.0.0\/24<\/div><\/div><\/div><\/foreignObject><text x=\"697\" y=\"50\" fill=\"#000000\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">10.1.0.0\/24<\/text><\/switch><\/g><rect x=\"568\" y=\"31\" width=\"30\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 46px; margin-left: 569px;\"><div data-drawio-colors=\"color: #000000; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">.1<\/div><\/div><\/div><\/foreignObject><text x=\"583\" y=\"51\" fill=\"#000000\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">.1<\/text><\/switch><\/g><rect x=\"793\" y=\"31\" width=\"30\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 46px; margin-left: 794px;\"><div data-drawio-colors=\"color: #000000; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">.2<\/div><\/div><\/div><\/foreignObject><text x=\"808\" y=\"51\" fill=\"#000000\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">.2<\/text><\/switch><\/g><path d=\"M 160 130 L 551.29 130\" fill=\"none\" stroke=\"#ff0000\" stroke-width=\"6\" stroke-miterlimit=\"10\" stroke-dasharray=\"6 6\" pointer-events=\"stroke\"\/><path d=\"M 563.29 130 L 551.29 136 L 551.29 124 Z\" fill=\"#ff0000\" stroke=\"#ff0000\" stroke-width=\"6\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><rect x=\"310\" y=\"130\" width=\"120\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 145px; margin-left: 311px;\"><div data-drawio-colors=\"color: #0000FF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 255); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\"><font color=\"#ff0000\">Ping(ICMP)<\/font><\/div><\/div><\/div><\/foreignObject><text x=\"370\" y=\"150\" fill=\"#0000FF\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">Ping(ICMP)<\/text><\/switch><\/g><\/g><switch><g requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\"\/><a transform=\"translate(0,-5)\" xlink:href=\"https:\/\/www.drawio.com\/doc\/faq\/svg-export-text-problems\" target=\"_blank\" rel=\"noopener\"><text text-anchor=\"middle\" font-size=\"10px\" x=\"50%\" y=\"100%\">Text is not SVG &#8211; cannot display<\/text><\/a><\/switch><\/svg><\/center>\n<\/div><\/div>\n\n\n\n<p><strong><span style=\"color:#ff0000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_orange\">\u4ee5\u4e0b\u306e\u8a18\u4e8b\u306e\u8a2d\u5b9a\u3067\u306f\u3001\u4e0a\u8a18\u306e\u56f3\u306e\u3088\u3046\u306a\u901a\u4fe1\u306f\u6210\u7acb\u3057\u307e\u305b\u3093\u3002<\/span><\/span><\/strong><\/p>\n\n\n<div class=\"swell-block-postLink\">\t\t\t<div class=\"p-blogCard -internal\" data-type=\"type2\" data-onclick=\"clickLink\">\n\t\t\t\t<div class=\"p-blogCard__inner\">\n\t\t\t\t\t<span class=\"p-blogCard__caption\">\u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/span>\n\t\t\t\t\t<div class=\"p-blogCard__thumb c-postThumb\"><figure class=\"c-postThumb__figure\"><img decoding=\"async\" src=\"https:\/\/daimaru-tech-blog.com\/wp-content\/uploads\/2022\/12\/wordpress_2-300x157.webp\" alt=\"\" class=\"c-postThumb__img u-obf-cover\" width=\"320\" height=\"180\"><\/figure><\/div>\t\t\t\t\t<div class=\"p-blogCard__body\">\n\t\t\t\t\t\t<a class=\"p-blogCard__title\" href=\"https:\/\/daimaru-tech-blog.com\/?p=239\">\u3010\u306f\u3058\u3081\u3066\u306e\u30d6\u30ed\u30b0\u904b\u7528\u3011\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3068VPN\u74b0\u5883\u306e\u69cb\u7bc9<\/a>\n\t\t\t\t\t\t<span class=\"p-blogCard__excerpt\">\u3010\u306f\u3058\u3081\u306b\u3011 \u3053\u3093\u306b\u3061\u306f\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u300c\u3060\u3044\u307e\u308b\u300d\u3067\u3059\u3002 \u524d\u56de\u306f\u300c\u3010\u306f\u3058\u3081\u3066\u306e\u30d6\u30ed\u30b0\u904b\u7528\u3011\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fb\u81ea\u524d\u74b0\u5883\u3069\u3063\u3061\u304c\u3044\u3044\uff1f\u300d\u3067\u69cb\u6210\u3068\u30b3\u30b9\u30c8\u306b&#8230;<\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n<p>\u30b5\u30fc\u30d01\u3067\u306f\u3001<strong><span style=\"color:#008000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_green\">10.1.0.0\/24\u5411\u3051\u306e\u7d4c\u8def\u3092\u300csudo ip route add 10.1.0.0\/24 via 10.8.0.2 dev tun0 metric 10\u300d\u30b3\u30de\u30f3\u30c9\u3067\u8ffd\u52a0<\/span><\/span><\/strong>\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code><strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">daimaru@Server1:~$ sudo ip route add 10.1.0.0\/24 via 10.8.0.2 dev tun0 metric 10<\/span><\/strong>\ndaimaru@Server1:~$ ip route\ndefault via 192.168.XX.YY dev ens192 proto dhcp metric 100\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">10.1.0.0\/24 via 10.8.0.2 dev tun0 metric 10<\/span><\/strong>\n10.8.0.0\/24 via 10.8.0.2 dev tun0\n10.8.0.2 dev tun0 proto kernel scope link src 10.8.0.1\n192.168.XX.0\/24 dev ens192 proto kernel scope link src 192.168.XX.ZZ metric 100<\/code><\/pre>\n\n\n\n<p>\u305d\u306e\u4e0a\u3067\u3001<strong><span style=\"color:#ff0000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_orange\">\u30b5\u30fc\u30d01\u304b\u3089\u30b5\u30fc\u30d02\u306e\u300c10.1.0.1\u300d\u5b9b\u306bPing\u3092\u98db\u3070\u3057\u305f\u969b\u306f\u3001\u30b5\u30fc\u30d01\u306eTun0\uff08VPN IF\uff09\u304b\u3089\u306f\u51fa\u529b\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u7269\u7406IF\u304b\u3089\u306f\u51fa\u529b\u3055\u308c\u3066\u3044\u306a\u3044<\/span><\/span><\/strong>\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code><strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">daimaru@Server1:~$ ping 10.1.0.1<\/span><\/strong>\nPING 10.1.0.1 (10.1.0.1) 56(84) bytes of data.\n\n--- 10.1.0.1 ping statistics ---\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">5 packets transmitted, 0 received, 100% packet loss, time 4078ms<\/span><\/strong><\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>daimaru@Server2:~$ sudo tcpdump -i tun0 -n\ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on tun0, link-type RAW (Raw IP), snapshot length 262144 bytes\n\ndaimaru@Server1:~$ sudo tcpdump -i tun0 -n\ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on tun0, link-type RAW (Raw IP), snapshot length 262144 bytes\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">20:09:39.669153 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 64732, seq 1, length 64\n20:09:40.675189 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 64732, seq 2, length 64\n20:09:41.699199 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 64732, seq 3, length 64\n20:09:42.723195 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 64732, seq 4, length 64\n20:09:43.747194 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 64732, seq 5, length 64<\/span><\/strong>\n\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">daimaru@Server1:~$ sudo tcpdump -i ens192 -n \ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on ens192, link-type EN10MB (Ethernet), snapshot length 262144 bytes<\/span><\/strong><\/code><\/pre>\n\n\n\n<p>\u4e00\u65b9\u3001<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">10.8.0.6\u5b9b\u306bPing\u3092\u98db\u3070\u3057\u305f\u969b\u306b\u306f\u3001\u30b5\u30fc\u30d01\u306eTun0\uff08VPN IF\uff09\u304b\u3089\u51fa\u529b\u3055\u308c\u3001\u7269\u7406IF\u304b\u3089\u306f\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u305f\u72b6\u614b\u3067\u51fa\u529b<\/span><\/span><\/strong>\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span style=\"color:#0000ff\" class=\"swl-inline-color\">\u4ee5\u4e0b\u30ed\u30b0\u3067\u306fServer1\u304b\u308910.8.0.6\u5411\u3051\u306ePing\u758e\u901a\u304c\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>daimaru@Server1:~$ ping -s 1400 10.8.0.6\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">PING 10.8.0.6 (10.8.0.6) 1400(1428) bytes of data.\n1408 bytes from 10.8.0.6: icmp_seq=1 ttl=64 time=0.294 ms\n1408 bytes from 10.8.0.6: icmp_seq=2 ttl=64 time=0.200 ms\n1408 bytes from 10.8.0.6: icmp_seq=3 ttl=64 time=0.249 ms\n1408 bytes from 10.8.0.6: icmp_seq=4 ttl=64 time=0.383 ms\n1408 bytes from 10.8.0.6: icmp_seq=5 ttl=64 time=0.230 ms\n1408 bytes from 10.8.0.6: icmp_seq=6 ttl=64 time=0.222 ms<\/span><\/strong>\n^C\n--- 10.8.0.6 ping statistics ---\n6 packets transmitted, 6 received, 0% packet loss, time 5118ms\nrtt min\/avg\/max\/mdev = 0.200\/0.263\/0.383\/0.060 ms<\/code><\/pre>\n\n\n\n<p>\u6b21\u306bServer1\u306eIF tun0\u3068ens\u3067\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u307f\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>daimaru@Server1:~$ sudo tcpdump -i tun0 -n\ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on tun0, link-type RAW (Raw IP), snapshot length 262144 bytes\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">20:12:40.581385 IP 10.8.0.1 > 10.8.0.6: ICMP echo request, id 59082, seq 1, length 1408\n20:12:40.581671 IP 10.8.0.6 > 10.8.0.1: ICMP echo reply, id 59082, seq 1, length 1408\n20:12:41.603192 IP 10.8.0.1 > 10.8.0.6: ICMP echo request, id 59082, seq 2, length 1408\n20:12:41.603376 IP 10.8.0.6 > 10.8.0.1: ICMP echo reply, id 59082, seq 2, length 1408<\/span><\/strong>\n\ndaimaru@Server1:~$ sudo tcpdump -i ens192 -n | grep 192.168.1.44\ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on ens192, link-type EN10MB (Ethernet), snapshot length 262144 bytes\n<span style=\"color:#00ff00\" class=\"swl-inline-color\"><strong>20:12:40.581449 IP 192.168.1.43.1194 > 192.168.1.44.51005: UDP, length 1452\n20:12:40.581636 IP 192.168.1.44.51005 > 192.168.1.43.1194: UDP, length 1452\n20:12:41.603227 IP 192.168.1.43.1194 > 192.168.1.44.51005: UDP, length 1452\n20:12:41.603349 IP 192.168.1.44.51005 > 192.168.1.43.1194: UDP, length 1452<\/strong><\/span>\n<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u30ed\u30b0\u304b\u3089\u758e\u901a\u304c\u53d6\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u7269\u7406IF\uff08ens192\uff09\u3088\u308aTun0\u306e\u30d1\u30b1\u30c3\u30c8\u9577\uff081408\uff09\u304b\u3089\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span style=\"color:#ff6347\" class=\"swl-inline-color\"><span class=\"swl-marker mark_yellow\">\u4e0a\u8a18\u3088\u308aOpenVPN\u306e\u30b5\u30fc\u30d0\u5074\u306e\u8a2d\u5b9a\u306b\u4f55\u304b\u554f\u984c\u304c\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"\u30e4\u30de\u30cf\u30eb\u30fc\u30bf\u30fc\u3067\u3064\u304f\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN [\u7b2c5\u7248] [ \u4e95\u4e0a \u5b5d\u53f8 ]\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\",\"p\":[\"\\\/@0_mall\\\/book\\\/cabinet\\\/5402\\\/9784839965402.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/book\\\/15288804\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#fc9823\",\"u_url\":\"https:\\\/\\\/amzn.to\\\/3VIqQyz\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":1},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/book\\\/15288804\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":2}],\"eid\":\"PEqt6\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-PEqt6\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END --><\/center>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6c7a\u65b9\u6cd5\u306f\u610f\u5916\u3068\u7c21\u5358\uff01<\/h2>\n\n\n\n<p><strong><span style=\"color:#008000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_green\">\u3053\u306e\u901a\u4fe1\u3092\u884c\u3046\u305f\u3081\u306b\u5b9f\u65bd\u3059\u308b\u624b\u6bb5\u306f\u4ee5\u5916\u3068\u7c21\u5358\u3067\u4e3b\u306b\uff12\u30b9\u30c6\u30c3\u30d7\u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step1\uff1aVPN\u30b5\u30fc\u30d0\u306e\u8a2d\u5b9a\uff08Server.conf\uff09\u3092\u5909\u66f4<\/h3>\n\n\n\n<p>\u6700\u521d\u306bVPN\u30b5\u30fc\u30d0\u5074\u306e\u8a2d\u5b9a\uff08Server.conf\uff09\u306e\u5185\u5bb9\u3092\u5909\u66f4\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5909\u66f4\u7b87\u6240\u306f\u5168\u90e8\u30672\u70b9\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\uff11\u70b9\u76ee\u306f\u300cServer.conf\u300d\u306e\u4e2d\u306b\u4ee5\u4e0b\uff12\u884c\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code><span style=\"color:#00ff00\" class=\"swl-inline-color\"><strong>client-config-dir \/etc\/openvpn #\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u7cfb\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u5148\nroute 10.1.0.0 255.255.255.0 #\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b\u8f09\u305b\u308b\u7d4c\u8def<\/strong><\/span><\/code><\/pre>\n\n\n\n<p>\uff12\u70b9\u76ee\u306f\u3001\u300cclient-config-dir \/etc\/openvpn\u300d\u3067\u6307\u5b9a\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u914d\u4e0b\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u540d\u3068\u540c\u3058\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u540d\u306f\u4f5c\u6210\u6642\u306b\u6307\u5b9a\u3057\u305f\u9375\u540d\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u4e0d\u660e\u306a\u5834\u5408\u306f\u300c\/var\/log\/openvpn\/openvpn-status.log\u300d\u3092\u78ba\u8a8d\u3059\u308c\u3070\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code><strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">daimaru@Server1:~$ sudo cat \/var\/log\/openvpn\/openvpn-status.log<\/span><\/strong>\nOpenVPN CLIENT LIST\nUpdated,2024-06-28 22:01:58\nCommon Name,Real Address,Bytes Received,Bytes Sent,Connected Since\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">Server2,192.168.1.44:51005,56217,56491,2024-06-28 19:23:46<\/span><\/strong>\nROUTING TABLE\nVirtual Address,Common Name,Real Address,Last Ref\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">10.8.0.6,Server2,192.168.1.44:51005,2024-06-28 20:12:45<\/span><\/strong>\nGLOBAL STATS\nMax bcast\/mcast queue length,1\nEND<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u3067\u78ba\u8a8d\u3057\u305f\u5f8c\u306f\u3001\u300csudo vim \/etc\/openvpn\/Server2\u300d\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001\u4ee5\u4e0b\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>daimaru@Server1:~$ sudo cat \/etc\/openvpn\/test_client\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">iroute 10.1.0.0 255.255.255.0<\/span><\/strong><\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u4f5c\u6210\u5f8c\u3001OpenVPN\u3092\u518d\u8d77\u52d5\u3059\u308b\u3053\u3068\u3067\u300c10.1.0.0\/24\u300d\u5b9b\u306e\u7d4c\u8def\u304c\u30c6\u30fc\u30d6\u30eb\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3Z8ZZN+7MGUNM+54NI+63WO1\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"728\" height=\"90\" alt=\"\" src=\"https:\/\/www20.a8.net\/svt\/bgt?aid=240604979461&#038;wid=001&#038;eno=01&#038;mid=s00000023931001026000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www13.a8.net\/0.gif?a8mat=3Z8ZZN+7MGUNM+54NI+63WO1\" alt=\"\"><\/center>\n\n\n\n<div class=\"swell-block-button green_ is-style-btn_solid\" data-id=\"60277bfc\"><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3Z8ZZN+7MGUNM+54NI+64C3L\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"swell-block-button__link\"><span>JCOM\u306e\u30cd\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u307f\u308b<\/span><\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Step2\uff1aVPN\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u8a2d\u5b9a\u3092\u5909\u66f4<\/h3>\n\n\n\n<p>VPN\u30b5\u30fc\u30d0\u5074\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u305f\u5f8c\u306f\u3001VPN\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f55\u3092\u5909\u66f4\u3059\u308b\u304b\uff1f<\/p>\n\n\n\n<p>\u305d\u308c\u306f<strong><span style=\"color:#008000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_green\">\u300c\/proc\/sys\/net\/ipv4\/ip_forward\u300d\u3092\u300c1\u300d\u306b\u3057\u307e\u3059<\/span><\/span><\/strong>\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u5b9f\u884c\u306b\u3088\u308a\u3001<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">\u30b5\u30fc\u30d0\u306eIF1-IF2\u9593\u306eIPv4\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u53ef\u80fd<\/span><\/span><\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code><strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">#\u4e8b\u524d\u78ba\u8a8d\ndaimaru@Server2:~$ sudo cat \/proc\/sys\/net\/ipv4\/ip_forward\n0\n\n#root\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u4ee5\u4e0b\u5b9f\u884c\necho 0 > \/proc\/sys\/net\/ipv4\/ip_forward\n\n#\u4e8b\u5f8c\u78ba\u8a8d\ndaimaru@Server2:~$ sudo cat \/proc\/sys\/net\/ipv4\/ip_forward\n1<\/span><\/strong><\/code><\/pre>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"\u30a6\u30a4\u30eb\u30b9\u30d0\u30b9\u30bf\u30fc \u30af\u30e9\u30a6\u30c9 \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9 3\u5e74\u7248+ 3\u53f0\u7248\uff5c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30bd\u30d5\u30c8\u30fbpc \u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56 \u30d1\u30bd\u30b3\u30f3 \u30b9\u30de\u30db \u30bf\u30d6\u30ec\u30c3\u30c8\u5bfe\u5fdc \uff0f\u30c8\u30ec\u30f3\u30c9\u30de\u30a4\u30af\u30ed \u3010\u516c\u5f0f\u3011\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\\\/@0_mall\\\/trendmicro\\\/cabinet\\\/img\",\"p\":[\"\\\/2023\\\/pkg\\\/vb03_free_0221.jpg\",\"\\\/2024\\\/square\\\/square_10emblem.jpg\",\"\\\/2023\\\/attention\\\/attention_0124.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/trendmicro\\\/vb_03\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#fc9823\",\"u_url\":\"https:\\\/\\\/amzn.to\\\/3W4qx2B\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":1},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/trendmicro\\\/vb_03\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":2}],\"eid\":\"rVY3I\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-rVY3I\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END --><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">\u52d5\u4f5c\u78ba\u8a8d\uff1aPing\u304c\u901a\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\uff01<\/h3>\n\n\n\n<p>\u307e\u305a\u3001\u300cServer1\u300d\u5074\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306f\u3001\u300c10.1.0.0\/24\u300d\u5411\u3051\u306e\u7d4c\u8def\u304c\u8ffd\u52a0\u3055\u308c\u3001\u60f3\u5b9a\u901a\u308a\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>daimaru@Server1:~$ ip route\ndefault via 192.168.1.1 dev ens192 proto dhcp metric 100\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">10.1.0.0\/24 via 10.8.0.2 dev tun0<\/span><\/strong>\n10.8.0.0\/24 via 10.8.0.2 dev tun0\n10.8.0.2 dev tun0 proto kernel scope link src 10.8.0.1\n192.168.1.0\/24 dev ens192 proto kernel scope link src 192.168.1.43 metric 100<\/code><\/pre>\n\n\n\n<p>\u3067\u306f\u3001\u5404IF\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>daimaru@Server1:~$ ping -s 1400 10.1.0.1\nPING 10.1.0.1 (10.1.0.1) 1400(1428) bytes of data.\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">1408 bytes from 10.1.0.1: icmp_seq=1 ttl=64 time=0.243 ms\n1408 bytes from 10.1.0.1: icmp_seq=2 ttl=64 time=0.811 ms\n1408 bytes from 10.1.0.1: icmp_seq=3 ttl=64 time=0.228 ms<\/span><\/strong>\n\ndaimaru@Server1:~$ sudo tcpdump -i tun0 -n\ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on tun0, link-type RAW (Raw IP), snapshot length 262144 bytes\n2<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">2:15:12.727258 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 9745, seq 1, length 1408\n22:15:12.727490 IP 10.1.0.1 > 10.8.0.1: ICMP echo reply, id 9745, seq 1, length 1408\n22:15:13.731150 IP 10.8.0.1 > 10.1.0.1: ICMP echo request, id 9745, seq 2, length 1408\n22:15:13.731944 IP 10.1.0.1 > 10.8.0.1: ICMP echo reply, id 9745, seq 2, length 1408<\/span><\/strong>\n\ndaimaru@Server1:~$ sudo tcpdump -i ens192 -n | grep 192.168.1.44\ntcpdump: verbose output suppressed, use -v&#91;v]... for full protocol decode\nlistening on ens192, link-type EN10MB (Ethernet), snapshot length 262144 bytes\n<strong><span style=\"color:#00ff00\" class=\"swl-inline-color\">22:15:12.727311 IP 192.168.1.43.1194 > 192.168.1.44.59424: UDP, length 1452\n22:15:12.727470 IP 192.168.1.44.59424 > 192.168.1.43.1194: UDP, length 1452\n22:15:13.731187 IP 192.168.1.43.1194 > 192.168.1.44.59424: UDP, length 1452\n22:15:13.731920 IP 192.168.1.44.59424 > 192.168.1.43.1194: 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