[B! network] cu39ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

cu39 id:cu39

networkã«é–¢ã™ã‚‹cu39ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (136)

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LANã‚±ãƒ¼ãƒ–ãƒ«ã‚’ãƒ‹ãƒƒãƒ‘ãƒ¼ã§åˆ‡æ–ã—ï¼•ç§’ã§ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¸ä¾µå…¥ãƒ»ç›—è´ã§ãã‚‹ã‹å®Ÿé¨“ã—ã¦ã¿ã¾ã—ãŸ
ã‚µã‚¤ãƒãƒ¼ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã«ãŠã„ã¦LANã‚±ãƒ¼ãƒ–ãƒ«(æœ‰ç·šLAN)ã‹ã‚‰ã®ä¾µå…¥ã«ã¤ã„ã¦è€ƒãˆãŸã“ã¨ãŒã‚ã‚‹ã§ã—ã‚‡ã†ã‹ï¼Ÿæœ¬ç¨¿ã§ã¯ã€LANã‚±ãƒ¼ãƒ–ãƒ«ã‚’ãƒ‹ãƒƒãƒ‘ãƒ¼ã§åˆ‡æ–ã—ã¦ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¸ä¾µå…¥ãƒ»ç›—è´ã—ãŸå®Ÿé¨“çµæžœã‚’ç´¹ä»‹ã—ã¾ã™ã€‚åˆ‡æ–ã—ã¦ã‹ã‚‰ä½•ç§’ã§ä¾µå…¥ãƒ»ç›—è´ã§ããŸã®ã§ã—ã‚‡ã†ã‹ï¼Ÿ æœ¬è¨˜äº‹ã¯ã€ã‚±ãƒ¼ãƒ–ãƒ«ã‚’åˆ‡æ–ã—ã¦ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¸ä¾µå…¥ãƒ»ç›—è´ã•ã‚Œã‚‹ãƒªã‚¹ã‚¯ãŒã‚ã‚‹äº‹ã‚’çŸ¥ã£ã¦ã„ãŸã ãäº‹ã‚’ç›®çš„ã¨ã—ã¦ã„ã¾ã™ã€‚ ã”è‡ªèº«ã®ç’°å¢ƒä»¥å¤–ã§ã¯è©¦ã•ãªã„ã‚ˆã†ãŠé¡˜ã„ã—ã¾ã™ã€‚ ãªãœLANã‚±ãƒ¼ãƒ–ãƒ«ã‹ã‚‰ã®ä¾µå…¥ï¼Ÿ æŠ€è¡“éƒ¨ã®å®‰äº•ã§ã™ã€‚é•·å¹´åˆ¶å¾¡ã‚·ã‚¹ãƒ†ãƒ ã‚’é–‹ç™ºã—ã¦ããŸçµŒé¨“ã‹ã‚‰åˆ¶å¾¡ã‚·ã‚¹ãƒ†ãƒ ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£å‘ä¸Šã«å–ã‚Šçµ„ã‚“ã§ã„ã¾ã™ã€‚åˆ¶å¾¡ã‚·ã‚¹ãƒ†ãƒ ã®æ¥ç•Œã§ã¯ã€è¿‘å¹´å¤–éƒ¨ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’çµŒç”±ã—ã¦ã®ä¾µå…¥ã‚„å†…éƒ¨ã«æŒã¡è¾¼ã¾ã‚ŒãŸUSBãƒ¡ãƒ¢ãƒªã‹ã‚‰ã®ä¾µå…¥ãŒæ³¨ç›®ã•ã‚Œã¦ã„ã¾ã™ã€‚ä¸€æ–¹ã§ã€ãªãœã‹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’æ§‹æˆã™ã‚‹å¤§ããªè¦ç´ ã§ã‚ã‚‹LANã‚±ãƒ¼ãƒ–ãƒ«ã‚„å…‰ã‚±ãƒ¼ãƒ–ãƒ«ã‹ã‚‰ã®ä¾µå…¥ã¸ã®æ³¨ç›®åº¦ã¯ä½Žã„ã‚ˆã†ã§ã™ã€‚åˆ¶å¾¡ã‚·ã‚¹ãƒ†ãƒ ã«é–¢ã‚ã‚‰ãš
cu39 2020/04/13
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security

network

hardware
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Revoking certain certificates on March 4 - Help - Let's Encrypt Community Support
[Update 2020-03-05: The most up-to-date summary is at 2020.02.29 CAA Rechecking Bug] Due to the 2020.02.29 CAA Rechecking Bug, we unfortunately need to revoke many Letâ€™s Encrypt TLS/SSL certificates. Weâ€™re e-mailing affected subscribers for whom we have contact information. This post and thread will collect answers to frequently asked questions about this revocation, and how to avoid probl ems by r
cu39 2020/03/04
network

security
ãƒªãƒ³ã‚¯
Linuxã«ãŠã‘ã‚‹æ–°ãŸãªãƒ‘ã‚±ãƒƒãƒˆãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°ãƒ„ãƒ¼ãƒ«ã€Œnftablesã€å…¥é–€ | ã•ãã‚‰ã®ãƒŠãƒ¬ãƒƒã‚¸
ãŸã¨ãˆã°ã€ã‹ã¤ã¦iptablesã§è¨å®šã—ã¦ã„ãŸIPv4ã«é–¢é€£ã™ã‚‹ãƒ‘ã‚±ãƒƒãƒˆãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°è¨å®šã¯ã€nftablesã«ãŠã„ã¦ã¯ã€Œipã€ã¨ã„ã†ã‚¢ãƒ‰ãƒ¬ã‚¹ãƒ•ã‚¡ãƒŸãƒªã«ç´ä»˜ã‘ãŸãƒ†ãƒ¼ãƒ–ãƒ«ã‚’ä½œæˆã™ã‚‹ã“ã¨ã§è¨å®šã§ãã‚‹ã€‚åŒæ§˜ã«ã€ip6tablesã‚„arpta blesã€ebtablesã§è¨å®šã—ã¦ã„ãŸã‚‚ã®ã¯ãã‚Œãžã‚Œã€Œip6ã€ã‚„ã€Œarpã€ã€ã€Œbridgeã€ã¨ã„ã†ã‚¢ãƒ‰ãƒ¬ã‚¹ãƒ•ã‚¡ãƒŸãƒªã«ç´ä»˜ã‘ãŸãƒ†ãƒ¼ãƒ–ãƒ«ã§è¨å®šã™ã‚‹ã€‚ ã€Œinetã€ã€ŒãŠã‚ˆã³ã€Œnetdevã€ã‚¢ãƒ‰ãƒ¬ã‚¹ãƒ•ã‚¡ãƒŸãƒªã¯nftablesã§æ–°ãŸã«å°Žå…¥ã•ã‚ŒãŸã‚‚ã®ã§ã€ã¾ãšã€Œinetã€ã¯IPv4ãŠã‚ˆã³IPv6ã®ä¸¡æ–¹ã‚’å¯¾è±¡ã«ã—ãŸè¨å®šã‚’è¡Œãˆã‚‹ã‚¢ãƒ‰ãƒ¬ã‚¹ãƒ•ã‚¡ãƒŸãƒªã ã€‚å¾“æ¥IPv4ã¨IPv6ã®ä¸¡æ–¹ã«ã¾ãŸãŒã£ãŸãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°ãƒ«ãƒ¼ãƒ«ã‚’è¨å®šã—ãŸã„å ´åˆã¯iptablesã¨ip6tablesã®ä¸¡æ–¹ã§åŒã˜ã‚ˆã†ãªãƒ«ãƒ¼ãƒ«ã‚’è¿½åŠ ã™ã‚‹å¿…è¦ãŒã‚ã£ãŸãŒã€nftablesã§ã¯inetã‚¢ãƒ‰ãƒ¬ã‚¹ãƒ•ã‚¡ãƒŸãƒªã§æŒ‡å®šã™ã‚‹ã“ã¨ã§å˜ä¸€ã®è¨
cu39 2019/09/11
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linux

admin

software

network
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Google to reimplement curl in libcrurl | daniel.haxx.se
Not the entire thing, just â€œa subsetâ€. Itâ€™s not stated very clearly exactly what that subset is but the easy interface is mentioned in the Chrome bug about this project. What? The Chromium bug states that they will create a library of their own (named libcrurl) that will offer (parts of) the libcurl API and be implemented using Cronet. Cronet is the networking stack of Chromium put into a library
cu39 2019/06/20
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coding

network

google
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3.0.0.0/8ãŒAmazonã«:Geekãªãºãƒ¼ã˜
3.0.0.0/8ãŒAmazonã«å‰²ã‚Šå½“ã¦ã•ã‚ŒãŸIPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ã«å¤‰ã‚ã£ã¦ã„ã¾ã™(via Hacker News)ã€‚ è¡¨é¢çš„ã«è¦‹ãˆã¦ã„ã‚‹ã®ã¯ã€IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ã®ç§»è»¢ã§ã™ãŒã€æã‚‰ãã€IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹å£²è²·ã«ã‚ˆã£ã¦Amazonã¸ã¨ç™»éŒ²ãŒç§»è»¢ã•ã‚ŒãŸã‚‚ã®ã ã¨æ€ã‚ã‚Œã¾ã™ã€‚ ã“ã®IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ç§»è»¢ã«ã‚ˆã‚Šã€Amazonã¯IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ç©ºé–“å…¨ä½“ã®1/256ã‚’æ–°ãŸã«ä½¿ãˆã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚ 3.0.0.0/8ã¯ã€ä»¥å‰ã¯ã€GE(General Electric Company)ã«å‰²ã‚Šå½“ã¦ã‚‰ã‚Œã¦ã„ã¾ã—ãŸã€‚ ã—ã‹ã—ã€æœ€è¿‘1å¹´ã»ã©ã§4å›žã«åˆ†ã‘ã¦Amazonã¸ã¨3.0.0.0/8ãŒç§»è»¢ã•ã‚Œã¦ã„ã¾ã™ã€‚ ARINã®whoisã‚’è¦‹ã‚‹ã¨ã€3.0.0.0/8ã¯ã€3.0.0.0/9ã¨3.128.0.0/9ã«åˆ†ã‘ã‚Œã¦ç™»éŒ²ã•ã‚Œã¦ã„ã¾ã™ã€‚ ä¸¡æ–¹ã¨ã‚‚ã€çµ„ç¹”ã¯ã€ŒAmazon Techno logies Inc. (AT-88-Z) ã€ã¨ã‚ã‚Š
cu39 2018/11/17
admin

network

dns
ãƒªãƒ³ã‚¯
tracerouteã§ * (ã‚¢ã‚¹ã‚¿ãƒªã‚¹ã‚¯)ã«ãªã‚‹ç†ç”± - é€†ã•ã¾ã«ã—ãŸ
èƒŒæ™¯ ã€Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãŒã¤ãªãŒã‚‰ãªã„ï¼ã€ã¨ã„ã£ãŸãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚’ã—ã¦ã„ã‚‹ã¨ã€ tracerouteã®çµæžœãŒã€ä»¥ä¸‹ã®ã‚ˆã†ã«çµŒè·¯ã®é€”ä¸ã§*ã«ãªã‚‹äº‹è±¡ã«ã‚ˆãéé‡ã—ã¾ã™ã€‚ ä»Šå›žã¯IPãƒ˜ãƒƒãƒ€ã‚„ãƒ‘ã‚±ãƒƒãƒˆã‚’è¦‹æ¯”ã¹ãªãŒã‚‰ã€ãªãœ*ã«ãªã‚‹ã®ã‹ã‚’è¦‹ã¦ã„ãã¾ã™ã€‚ $ traceroute 8.8.8.8 traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets 1 192.168.43.1 (192.168.43.1) 823.037 ms * 3.936 ms 2 * * * 3 osk004bb01.iij.net (202.32.116.5) 476.654 ms 132.676 ms 120.725 ms 4 osk004ix50.iij.net (58.138.107.218) 119.609 ms osk004ix50.iij.n
cu39 2018/10/26
ICMPãƒ‘ã‚±ãƒƒãƒˆã®TTLãŒåˆ‡ã‚ŒãŸï¼ˆãƒ‘ã‚±ãƒƒãƒˆã‚’ç ´æ£„ã™ã‚‹ï¼‰ã¨ããƒ«ãƒ¼ã‚¿ãƒ¼ãŒTime Exceeded Messageã‚’é€ã£ã¦ã“ãªã„ã¨ã‚¢ã‚¹ã‚¿ãƒªã‚¹ã‚¯ã«ãªã‚‹ã€‚

admin

network
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Network bridge on host - Docker for Mac - Docker Forums
cu39 2018/10/16
admin

network

docker

mac
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The Illustrated TLS Connection: Every Byte Explained
The session begins with the client saying "Hello". The client provides the following: protocol version client random data (used later in the handshake) an optional session id to resume a list of cipher suites a list of compression methods a list of extensions TLS sessions are broken into the sending and receiving of "records", which are blocks of data with a type, a protocol version, and a length.
cu39 2018/10/13
ã‚ã¨ã§èªã‚€

coding

network

security

learn
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2018å¹´4æœˆ23æ—¥ æ—¥æœ¬é›»ä¿¡é›»è©±æ ªå¼ä¼šç¤¾ NTTã‚³ãƒŸãƒ¥ãƒ‹ã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚ºæ ªå¼ä¼šç¤¾ æ ªå¼ä¼šç¤¾NTTãƒ‰ã‚³ãƒ¢ æ ªå¼ä¼šç¤¾NTTã·ã‚‰ã‚‰ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆä¸Šã®æµ·è³Šç‰ˆã‚µã‚¤ãƒˆã«å¯¾ã™ã‚‹ãƒ–ãƒãƒƒã‚ãƒ³ã‚°ã®å®Ÿæ–½ã«ã¤ã„ã¦ NTTã‚°ãƒ«ãƒ¼ãƒ—ã¯ã€ã“ã‚Œã¾ã§ã‚‚å®‰å…¨ãƒ»å®‰å¿ƒãªã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆåˆ©ç”¨ç’°å¢ƒã®æä¾›ã«åŠªã‚ã¦ã¾ã„ã‚Šã¾ã—ãŸã€‚ã“ã®åº¦ã€ã‚³ãƒ³ãƒ†ãƒ³ãƒ„äº‹æ¥è€…å›£ä½“ã‹ã‚‰ã®è¦è«‹ä¸¦ã³ã«2018å¹´4æœˆ13æ—¥ã«é–‹å‚¬ã•ã‚ŒãŸçŸ¥çš„è²¡ç”£æˆ¦ç•¥æœ¬éƒ¨ãƒ»çŠ¯ç½ªå¯¾ç–é–£åƒšä¼šè°ã«ãŠã„ã¦æ±ºå®šã•ã‚ŒãŸã€Œã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆä¸Šã®æµ·è³Šç‰ˆå¯¾ç–ã«é–¢ã™ã‚‹é€²ã‚æ–¹ã«ã¤ã„ã¦ã€ã«åŸºã¥ãã€NTTã‚³ãƒŸãƒ¥ãƒ‹ã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚ºæ ªå¼ä¼šç¤¾ã€æ ªå¼ä¼šç¤¾NTTãƒ‰ã‚³ãƒ¢ã€æ ªå¼ä¼šç¤¾NTTã·ã‚‰ã‚‰ã®3ç¤¾ã¯ã€ã‚µã‚¤ãƒˆãƒ–ãƒãƒƒã‚ãƒ³ã‚°ã«é–¢ã™ã‚‹æ³•åˆ¶åº¦ãŒæ•´å‚™ã•ã‚Œã‚‹ã¾ã§ã®çŸæœŸçš„ãªç·Šæ€¥æŽªç½®ã¨ã—ã¦ã€æµ·è³Šç‰ˆ3ã‚µã‚¤ãƒˆã«å¯¾ã—ã¦ãƒ–ãƒãƒƒã‚ãƒ³ã‚°ã‚’è¡Œã†ã“ã¨ã¨ã—ã€æº–å‚™ãŒæ•´ã„æ¬¡ç¬¬å®Ÿæ–½ã—ã¾ã™ã€‚ ãªãŠã€æ”¿åºœã«ãŠã„ã¦ã€å¯åŠçš„é€Ÿã‚„ã‹ã«æ³•åˆ¶åº¦ã‚’æ•´å‚™ã—ã¦ã„ãŸã ããŸã„ã¨è€ƒãˆã¦ã„ã¾ã™ã€‚
cu39 2018/04/23
network

ethics
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Buffalo WXR-1900DHP
æ ªå¼ä¼šç¤¾ãƒãƒƒãƒ•ã‚¡ãƒãƒ¼ã®WiFiãƒ«ãƒ¼ã‚¿ WXR-1900DHP ã§ã€transix IPv4æŽ¥ç¶šã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒ“ã‚¹ã‚’åˆ©ç”¨ã§ãã‚‹ã“ã¨ã‚’ç¢ºèªã—ã¾ã—ãŸã®ã§ã€æœ¬ãƒšãƒ¼ã‚¸ã«æŽ¥ç¶šã«å¿…è¦ãªè¨å®šã‚’ä¾‹ç¤ºã—ã¾ã™ã€‚ ãƒãƒƒãƒ•ã‚¡ãƒãƒ¼è£½å“ã®å…¬å¼æƒ…å ±ã«ã¤ã„ã¦ã¯ã€ä»¥ä¸‹ã‚’å‚ç…§ãã ã•ã„ã€‚ ãƒãƒƒãƒ•ã‚¡ãƒãƒ¼ IPv6æŽ¥ç¶šå‹•ä½œç¢ºèªæ¸ˆã¿ã‚µãƒ¼ãƒ“ã‚¹/æ©Ÿå™¨ä¸€è¦§ è¨å®šä¾‹ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ã‚ã‚Šã§è‡ªå‹•è¨å®šã™ã‚‹å ´åˆ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ã‚ã‚Šã§æ‰‹å‹•è¨å®šã™ã‚‹å ´åˆ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ãªã—ã®å ´åˆ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ã‚ã‚Šã§è‡ªå‹•è¨å®šã™ã‚‹å ´åˆ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤(ã²ã‹ã‚Šé›»è©±ãƒ«ãƒ¼ã‚¿)ã®IPv4 PPPoEã®æŽ¥ç¶šã‚’ç„¡åŠ¹ã«ã—ã¾ã™ã€‚ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ã®è¨å®šã«ã¤ã„ã¦ã¯ã€ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ã®èª¬æ˜Žæ›¸ã‚’å‚ç…§ãã ã•ã„ã€‚ (IPv4 PPPoEã®æŽ¥ç¶šã‚’ç¶æŒã™ã‚‹å ´åˆã€å¾Œè¿°ã®æ‰‹å‹•è¨å®šã‚’è¡Œã£ã¦ãã ã•ã„) æ©Ÿå™¨åº•é¢ã®ãƒ¢ãƒ¼ãƒ‰ã‚¹ã‚¤ãƒƒãƒã‚’AUTOãŠã‚ˆã³ROUTERã«è¨å®šã—ã¾ã™ã€‚ ãƒ›ãƒ¼ãƒ ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤
cu39 2018/01/16
network

config
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cu39 2017/08/12
hardware

network

IoT

security
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IPv6(IPoE/IPv4 over IPv6)å¯¾å¿œç¢ºèªæ¸ˆã¿ãƒªã‚¹ãƒˆ
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cu39 2017/05/17
hardware

network
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The Shadowserver Foundation
The Shadowserver Foundation is a nonprofit security organization working altruistically behind the scenes to make the Internet more secure for everyone. Our Story We collect vast amounts of threat data, send tens of thousands of free daily remediation reports, and cultivate strong reciprocal relationships with network providers, national governments and law enforcement. We bring malicious activiti
cu39 2017/05/15
network

security
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Linuxã§ãƒ—ãƒã‚»ã‚¹ãŒä½•ã®ãƒãƒ¼ãƒˆä½¿ã£ã¦ã„ã‚‹ã‹ã‚’èª¿ã¹ã‚‹ - Qiita
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cu39 2017/05/05
admin

network
ãƒªãƒ³ã‚¯
https://www.symantec.com/connect/ja/blogs/symantec-backs-its-ca-0
cu39 2017/03/28
æ—¥æœ¬èªžç‰ˆã€‚

admin

network

security

ssl
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Linuxãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ‰ãƒ©ã‚¤ãƒã®é–‹ç™º - Handwriting
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cu39 2016/12/11
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coding

linux

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cu39 2016/11/08
admin

gcp

google

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cu39 2016/10/31
network

ethics

law
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cu39 2016/10/31
security

network
ãƒªãƒ³ã‚¯
2016å¹´8æœˆæœ«ã‚ˆã‚Šç™ºç”Ÿã—ã¦ã„ã‚‹å›½å†…ã‚µã‚¤ãƒˆãƒ»ã‚µãƒ¼ãƒ“ã‚¹ã®æŽ¥ç¶šéšœå®³ã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ãŸ - piyolog
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cu39 2016/09/02
admin

network
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