å®éã®èšäºã¯ Tucha ãã¯ãã«ã« ãµããŒããžã®æçŽããçãŸããŸãã ããšãã°ãæè¿ã¯ã©ã€ã¢ã³ãããããŠãŒã¶ãŒã®ãªãã£ã¹ãšã¯ã©ãŠãç°å¢ã®éã® VPN ãã³ãã«å ã§ã®æ¥ç¶äžãããã³ VPN ãã³ãã«å€ã§ã®æ¥ç¶äžã«äœãèµ·ããããæ確ã«ããŠã»ãããšããèŠæãå¯ããããŸããã ãããã£ãŠã以äžã®å šæã¯ãããã¯ã©ã€ã¢ã³ãã®è³ªåã«å¿ããŠåœç€Ÿããã®ã¯ã©ã€ã¢ã³ãã«éã£ãå®éã®æçŽã§ãã ãã¡ãããã¯ã©ã€ã¢ã³ãã®å¿åæ§ãæãªãããªãããã«ãIP ã¢ãã¬ã¹ã¯å€æŽãããŸããã ããããã¯ããTucha ãã¯ãã«ã« ãµããŒãã¯ã詳现ãªåçãšæçãªé»åã¡ãŒã«ã§éåžžã«æåã§ãã ð
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ã¯ã©ã€ã¢ã³ãããµãŒããŒã«äœãæãã§ããã®ããããã«èª¬æããŸããã 192.168.A.1 RDP çµç±ã§ã©ãããã§ãæ¥ç¶ã§ãã AAA2:13389ããã®ä»ã®ãµãŒãã¹ã«ã¯ãªãã£ã¹ããã®ã¿ã¢ã¯ã»ã¹ã§ããŸã (192.168.B.0/24)VPNçµç±ã§æ¥ç¶ãããŠããŸãã ãŸããã¯ã©ã€ã¢ã³ãã¯åœåãè»ã 192.168.B.2 ãªãã£ã¹ã§ã¯ãã©ãããã§ã RDP ã䜿çšããŠã BBB1:11111ã ç§ãã¡ã¯ãã¯ã©ãŠããšãªãã£ã¹éã® IPSec æ¥ç¶ã®æŽçãæ¯æŽããŸããããããŠã顧客㮠IT ã¹ãã·ã£ãªã¹ãã¯ããã®å ŽåããŸãã¯ãã®å Žåã«äœãèµ·ãããã«ã€ããŠè³ªåããå§ããŸããã ããããã¹ãŠã®è³ªåã«çããããã«ãç§ãã¡ã¯å®éã以äžã«èªãããšãã§ãããã¹ãŠã®ããšã圌ã«æžããŸããã
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ããžã·ã§ã³ XNUMX
ããäœããéä¿¡ããããšã 192.168.B.0/24 в 192.168.A.0/24 ãŸãã¯ãã 192.168.A.0/24 в 192.168.B.0/24ãVPNã«å ¥ããŸãã ã€ãŸãããã®ãã±ããã¯ããã«æå·åãããŠã次ã®éã§éä¿¡ãããŸãã BBB1 О AAA1ããã 192.168.A.1 ããã±ãŒãžãæ£ç¢ºã«åç §ããŸã 192.168.B.1ã ãããã¯ãä»»æã®ãããã³ã«ã䜿çšããŠçžäºã«éä¿¡ã§ããŸãã è¿ä¿¡ãããå¿çã¯ãVPN çµç±ã§åæ§ã«éä¿¡ãããŸããã€ãŸããããã®ãã±ããã¯ã 192.168.A.1 ã®ããã« 192.168.B.1 ãã ESP ããŒã¿ã°ã©ã ãšããŠéä¿¡ãããŸã AAA1 Ма BBB1ãã«ãŒã¿ãŒããã®åŽã§å±éãããããããã±ãããåãåºããŠéä¿¡ããŸã 192.168.B.1 ããã®ããã±ãŒãžãšã㊠192.168.A.1.
å ·äœäŸïŒ
1) 192.168.B.1 ã«èšŽãã 192.168.A.1ããšã® TCP æ¥ç¶ã確ç«ããããšèããŠããŸãã 192.168.A.1:3389;
2) 192.168.B.1 ïœããæ¥ç¶ãªã¯ãšã¹ããéä¿¡ããŸã 192.168.B.1:55555 (ãã£ãŒãããã¯çšã®ããŒãçªå·ãèªåã§éžæããŸãã以äžãTCP æ¥ç¶ã圢æãããšãã«ã·ã¹ãã ãéžæããããŒãçªå·ã®äŸãšã㊠55555 ãšããçªå·ã䜿çšããŸã) 192.168.A.1:3389;
3) ãã®ã¢ãã¬ã¹ãæã€ã³ã³ãã¥ãŒã¿äžã§å®è¡ããããªãã¬ãŒãã£ã³ã° ã·ã¹ãã 192.168.B.1ããã®ãã±ãããã«ãŒã¿ãŒã®ã²ãŒããŠã§ã€ ã¢ãã¬ã¹ã«è»¢éããããšã決å®ããŸã (192.168.B.254 ç§ãã¡ã®å ŽåïŒãä»ã®ããå ·äœçãªã«ãŒããããããã 192.168.A.1ããªããããããã©ã«ã ã«ãŒã (0.0.0.0/0) çµç±ã§ãã±ãããéä¿¡ããŸãã
4) ãã®ããã«ãIP ã¢ãã¬ã¹ã® MAC ã¢ãã¬ã¹ãèŠã€ããããšããŸãã 192.168.B.254 ARP ãããã³ã« ãã£ãã·ã¥ ããŒãã«å ã æ€åºãããªãå Žåã¯ãã®ã¢ãã¬ã¹ããéä¿¡ 192.168.B.1 誰ããªã¯ãšã¹ããæã£ãŠãããããããã¯ãŒã¯ã«ãããŒããã£ã¹ããã 192.168.B.0/24ã ã〠192.168.B.254 å¿çãšããŠãã·ã¹ãã ã¯ãã® MAC ã¢ãã¬ã¹ãéä¿¡ããã·ã¹ãã ã¯ãã®ããã«ã€ãŒãµããã ãã±ãããéä¿¡ãããã®æ å ±ããã£ãã·ã¥ ããŒãã«ã«å ¥åããŸãã
5) ã«ãŒã¿ãŒã¯ãã®ãã±ãããåä¿¡ããã©ãã«è»¢éãããã決å®ããŸããã«ãŒã¿ãŒã«ã¯ããã¹ãŠã®ãã±ãããéä¿¡ããå¿ èŠããããšããæžé¢åãããããªã·ãŒããããŸãã 192.168.B.0/24 О 192.168.A.0/24 éã§ã® VPN æ¥ç¶ãä»ãã転é BBB1 О AAA1;
6) ã«ãŒã¿ãŒã¯ãESP ããŒã¿ã°ã©ã ãçæããŸãã BBB1 Ма AAA1;
7) ã«ãŒã¿ãŒã¯ããã®ãã±ããã®éä¿¡å ã決å®ããŸããããšãã°ã次ã®å®å ã«éä¿¡ããŸãã BBB254 (ISP ã²ãŒããŠã§ã€) ãžã®ããå ·äœçãªã«ãŒããããããã AAA1ã0.0.0.0/0 ããããããã¯ãããŸããã
8) ãã§ã«è¿°ã¹ãããã«ãMAC ã¢ãã¬ã¹ãèŠã€ããŸãã BBB254 ãããŠãã±ããã ISP ã²ãŒããŠã§ã€ã«éä¿¡ããŸãã
9) ã€ã³ã¿ãŒããããããã€ããŒã¯ãESP ããŒã¿ã°ã©ã ãéä¿¡ããŸãã BBB1 Ма AAA1;
10) ä»®æ³ã«ãŒã¿ãŒäžã® AAA1 ãã®ããŒã¿ã°ã©ã ãåä¿¡ãã埩å·åããŠãããã±ãããåä¿¡ããŸãã 192.168.B.1:55555 ã®ããã« 192.168.A.1:3389;
11) ä»®æ³ã«ãŒã¿ãŒã¯ã誰ã«æž¡ããã確èªããã«ãŒãã£ã³ã° ããŒãã«ã§ãããã¯ãŒã¯ãèŠã€ããŸãã 192.168.A.0/24 ã«çŽæ¥éä¿¡ããŸã 192.168.A.1ãã€ã³ã¿ãŒãã§ã€ã¹ããããã 192.168.A.254/24;
12) ãã®ããã«ãä»®æ³ã«ãŒã¿ãŒã¯ MAC ã¢ãã¬ã¹ãèŠã€ããŸãã 192.168.A.1 ãããŠããã®ãã±ãããä»®æ³ã€ãŒãµããã ãããã¯ãŒã¯çµç±ã§éä¿¡ããŸãã
13ïŒ 192.168.A.1 ã¯ãã®ãã±ãããããŒã 3389 ã§åä¿¡ããæ¥ç¶ã®ç¢ºç«ã«åæããããã®å¿çãšããŠãã±ãããçæããŸãã 192.168.A.1:3389 Ма 192.168.B.1:55555;
14) 圌ã®ã·ã¹ãã ã¯ãã®ãã±ãããä»®æ³ã«ãŒã¿ãŒã®ã²ãŒããŠã§ã€ ã¢ãã¬ã¹ã«éä¿¡ããŸã (192.168.A.254 ç§ãã¡ã®å ŽåïŒãä»ã®ããå ·äœçãªã«ãŒããããããã 192.168.B.1ããªããããããã©ã«ã ã«ãŒã (0.0.0.0/0) ãä»ããŠãã±ãããéä¿¡ããå¿ èŠããããŸãã
15) åã®ã±ãŒã¹ãšåæ§ã«ã次ã®ã¢ãã¬ã¹ãæã€ãµãŒããŒäžã§å®è¡ãããã·ã¹ãã 192.168.A.1ãMACã¢ãã¬ã¹ãèŠã€ããŸã 192.168.A.254ããã®ã€ã³ã¿ãŒãã§ã€ã¹ãšåããããã¯ãŒã¯äžã«ããããã 192.168.A.1/24;
16) ä»®æ³ã«ãŒã¿ãŒã¯ãã®ãã±ãããåä¿¡ããã©ãã«è»¢éãããã決å®ããŸããä»®æ³ã«ãŒã¿ãŒã«ã¯ããã¹ãŠã®ãã±ãããéä¿¡ããå¿ èŠããããšããæžé¢åãããããªã·ãŒããããŸãã 192.168.A.0/24 О 192.168.B.0/24 éã§ã® VPN æ¥ç¶ãä»ãã転é AAA1 О BBB1;
17) ä»®æ³ã«ãŒã¿ãŒã¯ãESP ããŒã¿ã°ã©ã ãçæããŸãã AAA1 ã®ããã« BBB1;
18) ä»®æ³ã«ãŒã¿ãŒã¯ãã®ãã±ããã®éä¿¡å ã決å®ãããã±ãããéä¿¡ããŸãã AAA254 (ISP ã²ãŒããŠã§ã€ããã®å Žåã¯ç§ãã¡ãæããŸã)ãããå ·äœçãªã«ãŒããããããã§ãã BBB1ã0.0.0.0/0 ããããããã¯ãããŸããã
19) ã€ã³ã¿ãŒããããããã€ããŒã¯ããããã¯ãŒã¯äžã§ ESP ããŒã¿ã°ã©ã ãéä¿¡ããŸãã AAA1 Ма BBB1;
20) ã«ãŒã¿ãŒããªã³ã«ãªã£ãŠãã BBB1 ãã®ããŒã¿ã°ã©ã ãåä¿¡ãã埩å·åããŠãããã±ãããåä¿¡ããŸãã 192.168.A.1:3389 ã®ããã« 192.168.B.1:55555;
21) 圌ã¯ããããç¹ã«æ¬¡ã®å®å ã«è»¢éãããã¹ãã§ããããšãç解ããŠããŸãã 192.168.B.1ã圌ã¯åããããã¯ãŒã¯äžã«ãããããã«ãŒãã£ã³ã° ããŒãã«ã«å¯Ÿå¿ãããšã³ããªãããããã®ããã圌ã¯å šäœã®ãã±ãããéä¿¡ããå¿ èŠããããŸãã 192.168.B.0/24 çŽæ¥;
22) ã«ãŒã¿ãŒã¯ã次㮠MAC ã¢ãã¬ã¹ãèŠã€ããŸãã 192.168.B.1 ãããŠåœŒã«ãã®å ã¿ãææž¡ããŸãã
23) ãã®ã¢ãã¬ã¹ãæã€ã³ã³ãã¥ãŒã¿äžã®ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã 192.168.B.1 ïœããè·ç©ãåãåããŸã 192.168.A.1:3389 ã®ããã« 192.168.B.1:55555 ãããŠãTCP æ¥ç¶ã確ç«ããããã®æ¬¡ã®ã¹ããããéå§ããŸãã
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ãšã®å Žå 192.168.B.0/24 äœããå ·äœçã«éä¿¡ããã AAA2ãVPN ã«ã¯æ¥ç¶ããããçŽæ¥æ¥ç¶ãããŸãã ã€ãŸãããŠãŒã¶ãŒãã¢ãã¬ã¹ãã 192.168.B.1 ã«èšŽãã AAA2:13389ããã®ãã±ããã¯æ¬¡ã®ã¢ãã¬ã¹ããéä¿¡ãããŸãã BBB1ãäŒãã AAA2ãã«ãŒã¿ãŒããããåä¿¡ããŠââéä¿¡ããŸãã 192.168.A.1. 192.168.A.1 ã«ã€ããŠã¯äœãç¥ããŸãã 192.168.B.1ã圌ã¯ããã®ããã±ãŒãžãèŠãŸã BBB1ã圌ã圌ãæã«å ¥ããããã§ãã ãããã£ãŠããã®ãªã¯ãšã¹ãã«å¯Ÿããå¿çã¯äžè¬çãªã«ãŒãã«åŸããåãæ¹æ³ã§ã¢ãã¬ã¹ããéä¿¡ãããŸãã AAA2 ãããŠè¡ããŸã BBB1ããããŠãã®ã«ãŒã¿ãŒã¯ãã®å¿çãã«éä¿¡ããŸã 192.168.B.1ã圌ã¯ããã®çããèŠãŸã AAA2ã圌ã¯èª°ã«å®ãŠãã
å ·äœäŸïŒ
1) 192.168.B.1 ã«èšŽãã AAA2ããšã® TCP æ¥ç¶ã確ç«ããããšèããŠããŸãã AAA2:13389;
2) 192.168.B.1 ïœããæ¥ç¶ãªã¯ãšã¹ããéä¿¡ããŸã 192.168.B.1:55555 (åã®äŸãšåæ§ããã®çªå·ã¯ç°ãªãå ŽåããããŸã) AAA2:13389;
3) ãã®ã¢ãã¬ã¹ãæã€ã³ã³ãã¥ãŒã¿äžã§å®è¡ããããªãã¬ãŒãã£ã³ã° ã·ã¹ãã 192.168.B.1ããã®ãã±ãããã«ãŒã¿ãŒã®ã²ãŒããŠã§ã€ ã¢ãã¬ã¹ã«è»¢éããããšã決å®ããŸã (192.168.B.254 ç§ãã¡ã®å ŽåïŒãä»ã®ããå ·äœçãªã«ãŒããããããã AAA2ãããã¯ãããŸãããããã¯ãããã©ã«ã ã«ãŒã (0.0.0.0/0) çµç±ã§ãã±ãããéä¿¡ããããšãæå³ããŸãã
4) ãã®ãããåã®äŸã§è¿°ã¹ãããã«ãIP ã¢ãã¬ã¹ã® MAC ã¢ãã¬ã¹ãèŠã€ããããšããŸãã 192.168.B.254 ARP ãããã³ã« ãã£ãã·ã¥ ããŒãã«å ã æ€åºãããªãå Žåã¯ãã®ã¢ãã¬ã¹ããéä¿¡ 192.168.B.1 誰ããªã¯ãšã¹ããæã£ãŠãããããããã¯ãŒã¯ã«ãããŒããã£ã¹ããã 192.168.B.0/24ã ã〠192.168.B.254 å¿çãšããŠãã·ã¹ãã ã¯ãã® MAC ã¢ãã¬ã¹ãéä¿¡ããã·ã¹ãã ã¯ãã®ããã«ã€ãŒãµããã ãã±ãããéä¿¡ãããã®æ å ±ããã£ãã·ã¥ ããŒãã«ã«å ¥åããŸãã
5) ã«ãŒã¿ã¯ãã®ãã±ãããåä¿¡ããã©ãã«è»¢éãããã決å®ããŸããã«ãŒã¿ã«ã¯ã次ããã®ãã¹ãŠã®ãã±ããã転éãã (ãªã¿ãŒã³ ã¢ãã¬ã¹ã眮ãæãã) å¿ èŠããããšããæžé¢åãããããªã·ãŒããããŸãã 192.168.B.0/24 ä»ã®ã€ã³ã¿ãŒãããããŒããžã
6) ãã®ããªã·ãŒã¯ãæ»ãã¢ãã¬ã¹ããã®ãã±ããã®éä¿¡ã«äœ¿çšãããã€ã³ã¿ãŒãã§ã€ã¹äžã®äžäœââã¢ãã¬ã¹ãšäžèŽããå¿ èŠãããããšãæ瀺ããŠãããããã«ãŒã¿ãŒã¯æåã«ãã®ãã±ããã®æ£ç¢ºãªéä¿¡å ã決å®ããåã®äŸãšåæ§ã«ãã«ãŒã¿ãŒã¯ãã±ãããéä¿¡ããå¿ èŠããããŸããã« BBB254 (ISP ã²ãŒããŠã§ã€) ãžã®ããå ·äœçãªã«ãŒããããããã AAA2ã0.0.0.0/0 ããããããã¯ãããŸããã
7) ãããã£ãŠãã«ãŒã¿ãŒã¯ãã±ããã®è¿ä¿¡ã¢ãã¬ã¹ã眮ãæããŸãããã以éããã±ãã㯠BBB1:44444 (ããŒãçªå·ã¯ããã¡ããç°ãªãå ŽåããããŸã) AAA2:13389;
8) ã«ãŒã¿ãŒã¯èªåãäœãããããã€ãŸããã€ããããèšæ¶ããŸãã AAA2:13389 к BBB1:44444 å¿çãå°çãããšãå®å ã¢ãã¬ã¹ãšããŒãã次ã®ããã«å€æŽããå¿ èŠãããããšãããããŸãã 192.168.B.1:55555.
9) ããã§ãã«ãŒã¿ãŒã¯ãããçµç±ã㊠ISP ãããã¯ãŒã¯ã«æž¡ãå¿ èŠããããŸãã BBB254ãããã£ãŠããã§ã«è¿°ã¹ãããã«ã次㮠MAC ã¢ãã¬ã¹ãèŠã€ããŸãã BBB254 ãããŠãã±ããã ISP ã²ãŒããŠã§ã€ã«éä¿¡ããŸãã
10) ã€ã³ã¿ãŒããããããã€ããŒã¯ãã±ãããéä¿¡ããŸãã BBB1 Ма AAA2;
11) ä»®æ³ã«ãŒã¿ãŒäžã® AAA2 ãã®ãã±ãããããŒã 13389 ã§åä¿¡ããŸãã
12) ä»®æ³ã«ãŒã¿ãŒã«ã¯ããã®ããŒãäžã®éä¿¡è ããåä¿¡ãããã±ããã次ã®å®å ã«éä¿¡ããããšãèŠå®ããã«ãŒã«ããããŸãã 192.168.A.1:3389;
13) ä»®æ³ã«ãŒã¿ãŒã¯ã«ãŒãã£ã³ã° ããŒãã«ã§ãããã¯ãŒã¯ãèŠã€ããŸãã 192.168.A.0/24 ãããŠãããçŽæ¥éããŸã 192.168.A1 ã€ã³ã¿ãŒãã§ã€ã¹ããããã 192.168.A.254/24;
14) ãã®ããã«ãä»®æ³ã«ãŒã¿ãŒã¯ MAC ã¢ãã¬ã¹ãèŠã€ããŸãã 192.168.A.1 ãããŠããã®ãã±ãããä»®æ³ã€ãŒãµããã ãããã¯ãŒã¯çµç±ã§éä¿¡ããŸãã
15ïŒ 192.168.A.1 ã¯ãã®ãã±ãããããŒã 3389 ã§åä¿¡ããæ¥ç¶ã®ç¢ºç«ã«åæããããã®å¿çãšããŠãã±ãããçæããŸãã 192.168.A.1:3389 Ма BBB1:44444;
16) 圌ã®ã·ã¹ãã ã¯ãã®ãã±ãããä»®æ³ã«ãŒã¿ãŒã®ã²ãŒããŠã§ã€ ã¢ãã¬ã¹ã«éä¿¡ããŸã (192.168.A.254 ç§ãã¡ã®å ŽåïŒãä»ã®ããå ·äœçãªã«ãŒããããããã BBB1ããªããããããã©ã«ã ã«ãŒã (0.0.0.0/0) ãä»ããŠãã±ãããéä¿¡ããå¿ èŠããããŸãã
17) åã®ã±ãŒã¹ãšãŸã£ããåãã次ã®ã¢ãã¬ã¹ãæã€ãµãŒããŒäžã§å®è¡ãããã·ã¹ãã 192.168.A.1ãMACã¢ãã¬ã¹ãèŠã€ããŸã 192.168.A.254ããã®ã€ã³ã¿ãŒãã§ã€ã¹ãšåããããã¯ãŒã¯äžã«ããããã 192.168.A.1/24;
18) ä»®æ³ã«ãŒã¿ããã®ãã±ãããåä¿¡ããŸãã 圌ã¯èªåãåãåã£ããã®ãèŠããŠããããšã«æ³šæããå¿ èŠããããŸã AAA2:13389 ããã®ããã±ãŒãž BBB1:44444 ãããŠåä¿¡è ã®ã¢ãã¬ã¹ãšããŒãã次ã®ããã«å€æŽããŸãã 192.168.A.1:3389ãããã£ãŠãããã®ããã±ãŒãžã¯ 192.168.A.1:3389 ã®ããã« BBB1:44444 éä¿¡è ã¢ãã¬ã¹ã次ã®ããã«å€æŽããŸã AAA2:13389;
19) ä»®æ³ã«ãŒã¿ãŒã¯ãã®ãã±ããã®éä¿¡å ã決å®ãããã±ãããéä¿¡ããŸãã AAA254 (ISP ã²ãŒããŠã§ã€ããã®å Žåã¯ç§ãã¡ãæããŸã)ãããå ·äœçãªã«ãŒããããããã§ãã BBB1ã0.0.0.0/0 ããããããã¯ãããŸããã
20) ã€ã³ã¿ãŒããããããã€ããŒã¯ã次ã®ãã±ãããéä¿¡ããŸãã AAA2 Ма BBB1;
21) ã«ãŒã¿ãŒããªã³ã«ãªã£ãŠãã BBB1 ãã®ãã±ãããåä¿¡ãããšããã±ãããéä¿¡ãããšãã®ããšãæãåºããŸãã 192.168.B.1:55555 ã®ããã« AAA2:13389ã圌ã¯èªåã®ã¢ãã¬ã¹ãšéä¿¡è ããŒãã次ã®ããã«å€æŽããŸããã BBB1:44444ããã®å Žåãããã¯ã«éä¿¡ããå¿ èŠãããå¿çã§ã 192.168.B.1:55555 (å®éã«ã¯ãããã«ããã€ãã®ãã§ãã¯ããããŸãããããã«ã€ããŠã¯è©³ãã説æããŸãã)ã
22) 圌ã¯ããããçŽæ¥ã«äŒããããã¹ãã§ããããšãç解ããŠããŸãã 192.168.B.1ã圌ã¯åããããã¯ãŒã¯äžã«ãããããã«ãŒãã£ã³ã° ããŒãã«ã«å¯Ÿå¿ãããšã³ããªãããããã®ããã圌ã¯å šäœã®ãã±ãããéä¿¡ããå¿ èŠããããŸãã 192.168.B.0/24 çŽæ¥;
23) ã«ãŒã¿ãŒã¯ã次㮠MAC ã¢ãã¬ã¹ãèŠã€ããŸãã 192.168.B.1 ãããŠåœŒã«ãã®å ã¿ãææž¡ããŸãã
24) ãã®ã¢ãã¬ã¹ãæã€ã³ã³ãã¥ãŒã¿äžã®ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã 192.168.B.1 ïœããè·ç©ãåãåããŸã AAA2:13389 ã®ããã« 192.168.B.1:55555 ãããŠãTCP æ¥ç¶ã確ç«ããããã®æ¬¡ã®ã¹ããããéå§ããŸãã
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ãããŠãéã«ã 192.168.A.1 BBB1 (ããšãã°ã11111) ã«å åãã«è»¢éããããã«èšå®ãããããŒãã«äœããéä¿¡ãããŸããããããæçµçã«ã¯ VPN ã«å°éãããåçŽã« VPN ããæµããŸãã AAA1 ãããŠå ¥ããŸã BBB1ãããŠåœŒã¯ãã§ã«ãããã©ããã«éä¿¡ããŠããŸããããšãã°ã 192.168.B.2:3389ã 圌ã¯ãã®ããã±ãŒãžãã©ãããã®ãã®ã§ã¯ãªãããšã«æ°ã¥ããŸãã 192.168.A.1ã ããã AAA1ã ãããŠã〠192.168.B.2 è¿ä¿¡ãããšãè·ç©ã¯ã©ãããæ¥ãŠããŸãã BBB1 Ма AAA1ã ãã®åŸãæ¥ç¶ã€ãã·ãšãŒã¿ãŒã«å°éããŸã - 192.168.A.1.
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1) 192.168.A.1 ã«èšŽãã BBB1ããšã® TCP æ¥ç¶ã確ç«ããããšèããŠããŸãã BBB1:11111;
2) 192.168.A.1 ïœããæ¥ç¶ãªã¯ãšã¹ããéä¿¡ããŸã 192.168.A.1:55555 (åã®äŸãšåæ§ããã®çªå·ã¯ç°ãªãå ŽåããããŸã) BBB1:11111;
3) ã¢ãã¬ã¹ãæã€ãµãŒããŒäžã§å®è¡ããããªãã¬ãŒãã£ã³ã° ã·ã¹ãã 192.168.A.1ããã®ãã±ãããã«ãŒã¿ãŒã®ã²ãŒããŠã§ã€ ã¢ãã¬ã¹ã«è»¢éããããšã決å®ããŸã (192.168.A.254 ç§ãã¡ã®å ŽåïŒãä»ã®ããå ·äœçãªã«ãŒããããããã BBB1ããªããããããã©ã«ã ã«ãŒã (0.0.0.0/0) çµç±ã§ãã±ãããéä¿¡ããŸãã
4) ãã®ãããåã®äŸã§è¿°ã¹ãããã«ãIP ã¢ãã¬ã¹ã® MAC ã¢ãã¬ã¹ãèŠã€ããããšããŸãã 192.168.A.254 ARP ãããã³ã« ãã£ãã·ã¥ ããŒãã«å ã æ€åºãããªãå Žåã¯ãã®ã¢ãã¬ã¹ããéä¿¡ 192.168.A.1 誰ããªã¯ãšã¹ããæã£ãŠãããããããã¯ãŒã¯ã«ãããŒããã£ã¹ããã 192.168.A.0/24ã ã〠192.168.A.254 ããã«å¿ããŠã圌ã¯åœŒå¥³ã«èªåã® MAC ã¢ãã¬ã¹ãéä¿¡ããã·ã¹ãã ã¯ãã®ã€ãŒãµããã ãã±ãããéä¿¡ãããã®æ å ±ããã£ãã·ã¥ ããŒãã«ã«å ¥åããŸãã
5) ä»®æ³ã«ãŒã¿ã¯ãã®ãã±ãããåä¿¡ããã©ãã«è»¢éãããã決å®ããŸããä»®æ³ã«ãŒã¿ã«ã¯ã次ããã®ãã¹ãŠã®ãã±ããã転éãã (æ»ãã¢ãã¬ã¹ã眮ãæãã) å¿ èŠããããšããæžé¢åãããããªã·ãŒããããŸãã 192.168.A.0/24 ä»ã®ã€ã³ã¿ãŒãããããŒããžã
6) ãã®ããªã·ãŒã§ã¯ãæ»ãã¢ãã¬ã¹ããã®ãã±ããã®éä¿¡ã«äœ¿çšãããã€ã³ã¿ãŒãã§ã€ã¹äžã®äžäœââã¢ãã¬ã¹ãšäžèŽããå¿ èŠããããšæ³å®ããŠãããããä»®æ³ã«ãŒã¿ãŒã¯æåã«ãã®ãã±ããã®æ£ç¢ºãªéä¿¡å ã決å®ããåã®äŸãšåæ§ã«ãä»®æ³ã«ãŒã¿ãŒã¯æ¬¡ã®ãã±ãããéä¿¡ããå¿ èŠããããŸããããã AAA254 (ISP ã²ãŒããŠã§ã€ããã®å Žåã¯ç§ãã¡ãæããŸã)ãããå ·äœçãªã«ãŒããããããã§ãã BBB1ã0.0.0.0/0 ããããããã¯ãããŸããã
7) ããã¯ãä»®æ³ã«ãŒã¿ãŒããã±ããã®æ»ãã¢ãã¬ã¹ã眮ãæããããšãæå³ããŸãããã以éããã±ããã¯ããã®ãã±ããã«ãªããŸãã AAA1:44444 (ããŒãçªå·ã¯ããã¡ããç°ãªãå ŽåããããŸã) BBB1:11111;
8) ä»®æ³ã«ãŒã¿ãŒã¯èªåãè¡ã£ãããšãèšæ¶ããŠãããããã〠BBB1:11111 ã®ããã« AAA1:44444 å¿çãå°çãããšãå®å ã¢ãã¬ã¹ãšããŒãã次ã®ããã«å€æŽããå¿ èŠãããããšãããããŸãã 192.168.A.1:55555.
9) ããã§ãä»®æ³ã«ãŒã¿ãŒã¯ãããçµç±ã㊠ISP ãããã¯ãŒã¯ã«æž¡ãå¿ èŠããããŸãã AAA254ãããã£ãŠããã§ã«è¿°ã¹ãããã«ã次㮠MAC ã¢ãã¬ã¹ãèŠã€ãããŸãã AAA254 ãããŠãã±ããã ISP ã²ãŒããŠã§ã€ã«éä¿¡ããŸãã
10) ã€ã³ã¿ãŒããããããã€ããŒã¯ãã±ãããéä¿¡ããŸãã AAA1 ïœ BBB1;
11) ã«ãŒã¿ãŒããªã³ã«ãªã£ãŠãã BBB1 ãã®ãã±ãããããŒã 11111 ã§åä¿¡ããŸãã
12) ä»®æ³ã«ãŒã¿ãŒã«ã¯ããã®ããŒãã®éä¿¡è ããå°çãããã±ããã次ã®å®å ã«éä¿¡ããããšãèŠå®ããã«ãŒã«ããããŸãã 192.168.B.2:3389;
13) ã«ãŒã¿ãŒã¯ã«ãŒãã£ã³ã° ããŒãã«ã§ãããã¯ãŒã¯ãèŠã€ããŸãã 192.168.B.0/24 ã«çŽæ¥éä¿¡ããŸã 192.168.B.2ãã€ã³ã¿ãŒãã§ã€ã¹ããããã 192.168.B.254/24;
14) ãã®ããã«ãä»®æ³ã«ãŒã¿ãŒã¯ MAC ã¢ãã¬ã¹ãèŠã€ããŸãã 192.168.B.2 ãããŠããã®ãã±ãããä»®æ³ã€ãŒãµããã ãããã¯ãŒã¯çµç±ã§éä¿¡ããŸãã
15ïŒ 192.168.B.2 ã¯ãã®ãã±ãããããŒã 3389 ã§åä¿¡ããæ¥ç¶ã®ç¢ºç«ã«åæããããã®å¿çãšããŠãã±ãããçæããŸãã 192.168.B.2:3389 Ма AAA1:44444;
16) 圌ã®ã·ã¹ãã ã¯ãã®ãã±ãããã«ãŒã¿ãŒã®ã²ãŒããŠã§ã€ ã¢ãã¬ã¹ (192.168.B.254 ç§ãã¡ã®å ŽåïŒãä»ã®ããå ·äœçãªã«ãŒããããããã AAA1ããªããããããã©ã«ã ã«ãŒã (0.0.0.0/0) ãä»ããŠãã±ãããéä¿¡ããå¿ èŠããããŸãã
17) åã®å Žåãšåæ§ã«ã次ã®ã¢ãã¬ã¹ãæã€ã³ã³ãã¥ãŒã¿äžã§å®è¡ãããã·ã¹ãã 192.168.B.2ãMACã¢ãã¬ã¹ãèŠã€ããŸã 192.168.B.254ããã®ã€ã³ã¿ãŒãã§ã€ã¹ãšåããããã¯ãŒã¯äžã«ããããã 192.168.B.2/24;
18) ã«ãŒã¿ãŒã¯ãã®ãã±ãããåä¿¡ããŸãã 圌ã¯èªåãåãåã£ããã®ãèŠããŠããããšã«æ³šæããå¿ èŠããããŸã BBB1:11111 ããã®ããã±ãŒãž AAA1 ãããŠåä¿¡è ã®ã¢ãã¬ã¹ãšããŒãã次ã®ããã«å€æŽããŸãã 192.168.B.2:3389ãããã£ãŠãããã®ããã±ãŒãžã¯ 192.168.B.2:3389 ã®ããã« AAA1:44444 éä¿¡è ã¢ãã¬ã¹ã次ã®ããã«å€æŽããŸã BBB1:11111;
19) ã«ãŒã¿ãŒã¯ããã®ãã±ããã®éä¿¡å ã決å®ããŸãã 圌ã¯ããããããšãã°ã次ã®å®å ã«éä¿¡ããŸãã BBB254 (ISP ã²ãŒããŠã§ã€ãæ£ç¢ºãªã¢ãã¬ã¹ã¯äžæ)ããã以äžå ·äœçãªã«ãŒãããªããã AAA1ã0.0.0.0/0 ããããããã¯ãããŸããã
20) ã€ã³ã¿ãŒããããããã€ããŒã¯ã次ã®ãã±ãããéä¿¡ããŸãã BBB1 Ма AAA1;
21) ä»®æ³ã«ãŒã¿ãŒäžã® AAA1 ãã®ãã±ãããåä¿¡ãããšããã±ãããéä¿¡ãããšãã®ããšãæãåºããŸãã 192.168.A.1:55555 ã®ããã« BBB1:11111ã圌ã¯èªåã®ã¢ãã¬ã¹ãšéä¿¡è ããŒãã次ã®ããã«å€æŽããŸããã AAA1:44444ã ããã¯ããããéä¿¡ããå¿ èŠãããåçã§ããããšãæå³ããŸã 192.168.A.1:55555 (å®éãåã®äŸã§è¿°ã¹ãããã«ãããã«ããã€ãã®ãã§ãã¯ããããŸãããä»åã¯ãããã«ã€ããŠã¯è©³ãã説æããŸãã)ã
22) 圌ã¯ããããçŽæ¥ã«äŒããããã¹ãã§ããããšãç解ããŠããŸãã 192.168.A.1ã圌ã¯åããããã¯ãŒã¯äžã«ãããããã«ãŒãã£ã³ã° ããŒãã«ã«å¯Ÿå¿ãããšã³ããªãããããã®ãšã³ããªã圌ã«ãã±ãããå šäœã«éä¿¡ããããšã匷å¶ããããšãæå³ããŸãã 192.168.A.0/24 çŽæ¥;
23) ã«ãŒã¿ãŒã¯ã次㮠MAC ã¢ãã¬ã¹ãèŠã€ããŸãã 192.168.A.1 ãããŠåœŒã«ãã®å ã¿ãææž¡ããŸãã
24) ã¢ãã¬ã¹ãæã€ãµãŒããŒäžã®ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã 192.168.A.1 ïœããè·ç©ãåãåããŸã BBB1:11111ã®å Žå 192.168.A.1:55555 ãããŠãTCP æ¥ç¶ã確ç«ããããã®æ¬¡ã®ã¹ããããéå§ããŸãã
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