¼­ºê³Ý ¸¶½ºÅ© Áú¹®ÀÔ´Ï´Ù.

   Á¶È¸ 2153   Ãßõ 0    

[공유기] - ipTIME

192.168.0.1


[컴퓨터1] - Linux

192.168.0.2

255.255.255.0

192.168.0.1


[컴퓨터2] - 192.168.10.* 망 게이트웨이 Linux

(랜카드1)

192.168.0.3

255.255.255.0

192.168.0.1


(랜카드2)

192.168.10.1

255.255.255.0

(게이트 웨이 미지정)


[컴퓨터3] - Linux

192.168.10.2

255.255.255.0

192.168.10.1


이런 상황인데, 컴퓨터1 에서 컴퓨터3 로 SSH 접속을 하려고 합니다.

그런데, 접속이 안되는데 아무래도 서브넷 마스크를 잘못 준거 때문이 아닐까 싶은데

위 각각의 서브넷 마스크를 어떻게 수정해야 이런 형태의 접속이 가능할까요 ?

컴퓨터1, 컴퓨터2-랜카드1, 컴퓨터2-랜카드2, 컴퓨터3 으로 지정해서 알려주시면 쉽게 이해될것 같습니다.

[root@192.168.0.2 ~]# ssh 192.168.10.2 22
ssh: connect to host 192.168.10.2 port 22: Connection timed out

고맙습니다.


ps) 댓글을 보고 공유기에 라우팅 설정하니 ping 은 들어갑니다



ªÀº±Û Àϼö·Ï ½ÅÁßÇÏ°Ô.
¼ÛÁÖȯ 2023-02
1. ÄÄÇ»ÅÍ 2¿¡¼­ net.ipv4.ip_forward=1·Î IP Æ÷¿öµù ±â´É È°¼ºÈ­
2. ÄÄÇ»ÅÍ 2ÀÇ iptables¿¡¼­ forward table default policy¸¦ ACCEPT·Î ¼³Á¤
     
¹Î»çÀå 2023-02
¸»¾¸ÇÏ½Ã´Â°Ô ¹ºÁö Àß ¸ð¸£°Ú´Âµ¥, Æ÷Æ® Æ÷¿öµå ¸»¾¸ÇϽô°ɱî¿ä ? Æ÷Æ® Æ÷¿öµå´Â Á¦°¡ ¿øÇÏ´Â ´äº¯Àº ¾Æ´Ñ°Í °°¾Æ¿ä..
IP ¸¦ ÇØ´ç ÄÄÇ»ÅÍ IP ·Î Á¤È®ÇÏ°Ô ÁöÁ¤ÇÏ°í ½Í¾î¿ä
ÇѸ¶µð·Î ¿ä¾àÇÏÀÚ¸é ÄÄÇ»ÅÍ2°¡ ¶Ç´Ù¸¥ °øÀ¯±â ó·³ µ¿ÀÛÇØ¾ß ÇÕ´Ï´Ù.
²¿¼Ò 2023-02
ÄÄÇ»ÅÍ1ÀÇ ³×Æ®¿öÅ©´Â 24bit À̹ǷΠ192.168.10.0/24  ´ë¿ªÀ¸·Î ³Ñ¾î °¡·Á¸é ÄÄÇ»ÅÍ1ÀÇ default ¶Ç´Â static °ÔÀÌÆ®¿þÀÌ(GW)¸¦ Ÿ°í ³Ñ¾î°¡¾ßÇÕ´Ï´Ù.
ÄÄÇ»ÅÍ1ÀÇ GWÀº 192.168.0.1À̹ǷÎ, 192.168.0.1¿¡¼­ ¶ó¿ìÆÃÀ» ÇØÁà¾ß 192.168.10.0/24 ´ë¿ªÀ¸·Î ³Ñ¾î°¥ ¼ö ÀÖ½À´Ï´Ù.
ÇÏÁö¸¸ iptime °øÀ¯±â¿¡ 192.168.10.0/24 ´ë¿ªÀÇ IPµµ ¾øÀ¸¸ç ¶ó¿ìÆà ¼³Á¤µµ ¾ÈµÇ¾î ÀÖÀ¸¹Ç·Î, ÄÄÇ»ÅÍ 1¿¡¼­ 3À¸·Î ³×Æ®¿öÅ© ´ë¿ªÀº Á¢±ÙÇÒ ¼ö ¾ø´Â °ÍÀÌ ¸Â½À´Ï´Ù.
ÄÄÇ»ÅÍ 1°ú 3À» Åë½ÅÇÏ°í ½ÍÀ¸½Ã´Ù¸é
1. ÄÄÇ»ÅÍ 1¿¡ 192.168.10.0/24 ´ë¿ªÀ» ¸¸µé¾î Áֽðųª (´ÙÁß IP)
2. 192.168.0.0/22 ´ë¿ªÀ¸·Î ³×Æ®¿öÅ© ´ë¿ªÀ» ´Ã·ÁÁֽðųª
3. ÄÄÇ»ÅÍ 2¸¦ GW·Î ¸¸µé¾î¼­ 192.168.10.0/24 ´ë¿ªÀ» ¶ó¿ìÆÃÇϵµ·Ï Çϸé (IPTIME °øÀ¯±â Á¦¿Ü)
°¡´ÉÇϸ®¶ó »ý°¢ÇÕ´Ï´Ù.
À§ÀÇ °¡Á¤µéÀº Àû¾îµµ ¸ðµç ȸ¼±ÀÌ L2·Î ´Ù ¿¬°áµÇ¾î ÀÖ´Ù´Â °ÍÀ» ÀüÁ¦·Î ÇÕ´Ï´Ù.

±×·±µ¥ ¿Ö ÀÌ·± ³×Æ®¿öÅ© ±¸¼ºÀ» ÇÒ·Á°í ÇϽô °Ç°¡¿ä? ÄÄÇ»ÅÍ 3´ë¿¡ ´Ü¼ø ´ë¿ª ³ª´®Àº Å« Àǹ̰¡ ¾øÀ» °Í °°Àºµ¥¿ä..
     
¹Î»çÀå 2023-02
ÀÚ¼¼ÇÑ °ÍÀº ³×Æ®¿öÅ© º¸¾È»çÇ×À̶ó Áú¹®¿¡ ÇÊ¿äÇÑ ³»¿ëµµ ¾Æ´Ï°í Áú¹®¸¸ º¹ÀâÇÏ°Ô µÇ¾î¼­ À§¿¡Ã³·³ ²À ÇÊ¿äÇÑ ³»¿ë¸¸ ¾´°ÍÀÌ°í¿ä
192.168.10.* ´ë¿ªÀº °¡»óÈ­ ¼­¹ö¶ó °Ô½ºÆ®µéÀÌ ¸¹ÀÌ ÀÖ½À´Ï´Ù. 192.168.0.* À¸·Î Àâ¾Æ³õÀ¸¸é ÀÌ ¼­¹ö¸¦ »ç¹«½Ç À̵¿ÇßÀ»¶§ ±×°÷ÀÇ 192.168.0.* ¸Á°ú Ãæµ¹Çϱ⠶§¹®¿¡ ÀÌ·¸°Ô ÇÑ°ÍÀÔ´Ï´Ù.

1. ÄÄÇ»ÅÍ 1¿¡ 192.168.10.0/24 ´ë¿ªÀ» ¸¸µé¾î Áֽðųª (´ÙÁß IP) -> ¼ö½Ê´ëÀÇ ¸ðµç ÄÄÇ»ÅÍ ¸¶´Ù ÀÌ·¸°Ô Ãß°¡ ÇÒ¼ö°¡ ¾øÀ¸´Ï ÀÌ ¹æ¹ýÀº ¾ÈµÉ°Í °°½À´Ï´Ù.
2. 192.168.0.0/22 ´ë¿ªÀ¸·Î ³×Æ®¿öÅ© ´ë¿ªÀ» ´Ã·ÁÁֽðųª -> ÀÌ°Ç ¾î¶»°Ô ÇÒ ¼ö ÀÖ³ª¿ä ? ¼­ºê³Ý ¸¶½ºÅ©¸¦ 255.255.0.0 À¸·Î ÁÖ¸é µÇ´Â°ÍÀΰ¡¿ä ?
3. ÄÄÇ»ÅÍ 2¸¦ GW·Î ¸¸µé¾î¼­ 192.168.10.0/24 ´ë¿ªÀ» ¶ó¿ìÆÃÇϵµ·Ï Çϸé (IPTIME °øÀ¯±â Á¦¿Ü) -> ÄÄÇ»ÅÍ2´Â ÀÌ¹Ì GWÀÔ´Ï´Ù. ÄÄÇ»ÅÍ2¿¡µµ ¶ó¿ìÆà ¼³Á¤À» Ãß°¡Ç϶ó´Â ¾ê±âÀΰ¡¿ä ? ¾î¶²½ÄÀ¸·Î ÇÒ ¼ö ÀÖÀ»±î¿ä ? (±¸Ã¼ÀûÀÎ ¸í·É¾î...)

À§¿¡ Ãß°¡ÇÑ »çÁøó·³ °øÀ¯±â ¶ó¿ìÆà ¼³Á¤À» Ãß°¡ÇÏ´Ï ÄÄÇ»ÅÍ 1¿¡¼­ ÄÄÇ»ÅÍ 3 À¸·Î ping ÀÌ µÇ±â ½ÃÀÛÇϴµ¥, ¾ÆÁ÷ ssh ¿¬°áÀº ¾ÈµË´Ï´Ù. ¹» ´õ ÇØÁà¾ß ÇÒ±î¿ä ?
¹è¶×ÀÌ 2023-02
¼­¹ö ¼³Á¤Àº Àß µÇ¾îÀÖÀ¸½Ç°Í°°°í
IPtime °øÀ¯±â¿¡ ¶ó¿ìÆà ³Ö¾îÁּžßÇÕ´Ï´Ù
192.168.10.0/24 -> 192.168.0.3
     
¹Î»çÀå 2023-02
ipTIME°øÀ¯±â¿¡ ¶ó¿ìÆà ¼³Á¤À» ³ÖÀ¸´Ï (À§ ĸÃÄ Âü°í) ÄÄÇ»ÅÍ1¿¡¼­ ÄÄÇ»ÅÍ3À¸·Î ping ÀÌ µÇ±â ½ÃÀÛÇÕ´Ï´Ù. ÀÌ ¼³Á¤ÀÌ ÇÊ¿äÇÑ °ÍÀ̾ú³×¿ä.
±×¸®°í ¸Þ½ÃÁö°¡ ¾Æ·¡¿Í °°ÀÌ ¹Ù²î¾ú´Âµ¥, ¹º°¡ Çϳª¸¦ ´õ ÇØÁà¾ß ÇÏ´Â °Í °°½À´Ï´Ù. ¹» ´õ ÇØÁà¾ß ÇÒ±î¿ä ?

(ÀÌÀü) - ping ¾ÈµÊ
[root@webcom ~]# ssh user1@192.168.10.2 -p 22
ssh: connect to host 192.168.10.2 port 22: Connection timed out

(ÀÌÈÄ) °øÀ¯±â ¶ó¿ìÆà ¼³Á¤ÈÄ - ping µÊ
[root@webcom ~]# ssh user1@192.168.10.2 -p 22
ssh: connect to host 192.168.10.2 port 22: No route to host
          
¸ð¾îÄð 2023-02
À§¿¡ ¼ÛÁÖȯ´ÔÀÌ ¸»¾¸ÇϽŠÀÛ¾÷À» ÇÏ¼Å¾ß ÇÕ´Ï´Ù.
ÄÄ2¿¡¼­ sysctl -a |grep ip_forward Çϼż­ ÇØ´ç °ªÀÌ 1·Î ¼ÂÆõǾîÀÖ´ÂÁö È®ÀÎÇÏ½Ã°í ¾ÈµÇ¾îÀÖÀ¸¸é

vi /etc/sysctl.conf
net.ipv4.ip_forward=1

³ÖÀ¸½Ã°í
sysctl -p
ÇϽøé Àû¿ë µË´Ï´Ù.
               
¹Î»çÀå 2023-02
# sysctl -a |grep ip_forward
net.ipv4.ip_forward = 1
net.ipv4.ip_forward_usr_pmtu = 0

ÀÌ·¸°Ô Çϸé Àß µÇ¾î ÀÖ´Â °ÍÀΰ¡¿ä ? Àú´Â µû·Î º¯°æÇÑ °ÍÀº ¾ø½À´Ï´Ù...
¿©ÀüÈ÷ ¾ÈµÇ°í Àֳ׿ä

[root@webcom log]# ping 192.168.10.2
PING 192.168.10.2 (192.168.10.2) 56(84) bytes of data.
64 bytes from 192.168.10.2: icmp_seq=1 ttl=63 time=1.24 ms
From 192.168.0.1 icmp_seq=2 Redirect Host(New nexthop: 192.168.0.3)
64 bytes from 192.168.10.2: icmp_seq=2 ttl=63 time=1.03 ms
From 192.168.0.1 icmp_seq=3 Redirect Host(New nexthop: 192.168.0.3)
64 bytes from 192.168.10.2: icmp_seq=3 ttl=63 time=0.998 ms
^C
--- 192.168.10.2 ping statistics ---
3 packets transmitted, 3 received, +2 errors, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 0.998/1.087/1.235/0.105 ms

[root@webcom log]# ssh 192.168.10.2 -p 22
ssh: connect to host 192.168.10.2 port 22: No route to host

ÄÄ1¿¡¼­ ÄÄ3À¸·Î ping Àº µÇ´Âµ¥ ssh°¡ ¾ÈµË´Ï´Ù...
¹Ý¸í, ÄÄ3¿¡¼­ ÄÄ1·Î´Â pingµµ µÇ°í, sshµµ ¿¬°áµË´Ï´Ù.
ÀÌ°Ô Âü ÀÌ»óÇÑ Á¡À̳׿ä...

Ȥ½Ã ¸ô¶ó¼­ ÄÄ3¿¡¼­ vi /etc/hosts.allow
sshd: 192.168.

ÀߵǾî ÀÖ½À´Ï´Ù. ¸·Èù°Íµµ ¾Æ´Õ´Ï´Ù.
±×¸®°í 192.168.10.* ¸ÁÀÇ ´Ù¸¥ ÄÄÇ»ÅÍ¿¡¼­´Â 192.168.10.2 ·Î ssh°¡ Àß ºÙ½À´Ï´Ù.
                    
¹è¶×ÀÌ 2023-02
±×·¸´Ù¸é
¿øÀÎÆľÇÀ» À§Çؼ­ ÆÐŶµ¢ÇÁ¸¦ ¶°º¼ ÇÊ¿ä°¡ ÀÖÀ»°Í°°½À´Ï´Ù

tcpdump ¸í·É¾î¸¦ »ç¿ëÇÏ¿© ÄÄÇ»ÅÍ2°¡ Á߰踦 Àß ÇØÁÖ´ÂÁö, ÄÄÇ»ÅÍ3±îÁö ÆÐŶÀÌ µµ´ÞÇÏ´ÂÁö üũÇغ¸¼¼¿ä

1. ÄÄÇ»ÅÍ2
#tcpdump -nni ·£Ä«µå1ÀÎÅÍÆäÀ̽º¸í host 192.168.0.2
»óÅ¿¡¼­ ÄÄ1 -> ÄÄ3:22 ½ÃµµÇغ¸¼¼¿ä

2. ÄÄÇ»ÅÍ2
#tcpdump -nni ·£Ä«µå2ÀÎÅÍÆäÀ̽º¸í host 192.168.0.2
»óÅ¿¡¼­ ÄÄ1 -> ÄÄ3:22 ½ÃµµÇغ¸¼¼¿ä

3. ÄÄÇ»ÅÍ3
#tcpdump -nni ·£Ä«µåÀÎÅÍÆäÀ̽º¸í host 192.168.0.2
»óÅ¿¡¼­ ÄÄ1 -> ÄÄ3:22 ½ÃµµÇغ¸¼¼¿ä

À§ 3°¡Áö¸¦ Çغ¸½Ã¸é ¾îµð°¡ ¸·È÷´ÂÁö ¾Ë ¼ö ÀÖ½À´Ï´Ù
±× °á°ú¸¦ Åä´ë·Î Á¶Ä¡¸¦ ÇÏ½Ã´Â°Ô ¸ÂÀ» °Í °°½À´Ï´Ù
                         
¹Î»çÀå 2023-02
1. result (ÄÄÇ»ÅÍ2¿¡ ·£Ä«µå1 ¸í·É¾î Ä¡°í, ÄÄ1->ÄÄ3 ssh ½Ãµµ)

# tcpdump -nni ens160 host 192.168.0.2
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ens160, link-type EN10MB (Ethernet), capture size 262144 bytes
03:28:03.490732 IP 192.168.0.2.54946 > 192.168.10.2.10122: Flags [S], seq 2881666181, win 64240, options [mss 1460,sackOK,TS val 509379747 ecr 0,nop,wscale 7], length 0
03:28:03.490787 IP 192.168.0.4 > 192.168.0.2: ICMP host 192.168.10.2 unreachable - admin prohibited, length 68
03:28:08.508213 ARP, Request who-has 192.168.0.2 tell 192.168.0.4, length 28
03:28:08.508621 ARP, Reply 192.168.0.2 is-at 18:c0:4d:46:74:58, length 46
                         
¹Î»çÀå 2023-02
2. result (ÄÄÇ»ÅÍ2¿¡ ·£Ä«µå2 ¸í·É¾î Ä¡°í, ÄÄ1->ÄÄ3 ssh ½Ãµµ)

# tcpdump -nni ens192 host 192.168.0.2
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ens192, link-type EN10MB (Ethernet), capture size 262144 bytes
                         
¹Î»çÀå 2023-02
3. result (ÄÄÇ»ÅÍ3¿¡ ¸í·É¾î Ä¡°í, ÄÄ1->ÄÄ3 ssh ½Ãµµ)

# tcpdump -nni ens160 host 192.168.0.2
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ens160, link-type EN10MB (Ethernet), capture size 262144 bytes
                         
¹Î»çÀå 2023-02
ÄÄÇ»ÅÍ2 ·£Ä«µå1 IP °¡ ½ÇÀº 192.168.0.4 ÀÔ´Ï´Ù. º¸¾È»ó ÀÌ IP¸¸ ´Ù¸£°Ô Àû¾ú´ø°Çµ¥, ·Î±×¿¡¼­ Âü°í ¹Ù¶ø´Ï´Ù.
±×·³ À§ ·Î±×¿¡¼­ ¾îµð°¡ ¹®Á¦Àΰɱî¿ä ?
                    
¸ð¾îÄð 2023-02
±×·¸´Ù¸é ÄÄ2¿¡¼­ ¾Æ·¡ ³»¿ëÀ» Ãß°¡Çغ¸¼¼¿ä

vi /etc/sysctl.conf
net.ipv4.conf.default.rp_filter=2
net.ipv4.conf.all.rp_filter=2


sysctl -p
                         
¹Î»çÀå 2023-02
¸ð¾îÄð´Ô °ÍÀº ÀÌ·¸°Ô ³ª¿À³×¿ä. sysctl -p Çß½À´Ï´Ù. Centos Stream 9 ÀÔ´Ï´Ù.
sysctl: cannot stat /proc/sys/net/ipv4/conf/app/rp_flter: ±×·± ÆÄÀÏÀ̳ª µð·ºÅ͸®°¡ ¾ø½À´Ï´Ù
                         
¸ð¾îÄð 2023-02
¿ÀŸ È®ÀÎÇغ¸¼¼¿ä.. app°¡ ¾Æ´Ï¶ó allÀÔ´Ï´Ù.
                         
¹Î»çÀå 2023-02
ÄÄ2¿¡¼­
# sysctl -p
net.ipv4.conf.default.rp_filter = 2
net.ipv4.conf.all.rp_filter = 2

ÄÄ1¿¡¼­ ÄÄ3 ssh ¿¬°á½Ãµµ
# ssh 192.168.10.2 -p 10122
ssh: connect to host 192.168.10.2 port 10122: No route to host

¿©ÀüÈ÷ ¾ÈµÇ°í Àֳ׿ä. ÀÏ´Ü ¼³Á¤Àº ¹éÇß½À´Ï´Ù...
                    
¹è¶×ÀÌ 2023-02
ÀÏÁ¤ ±íÀÌ ÀÌ»ó ´ñ±ÛÀº ´ë´ñ±ÛÀÌ ¾ÈµÇ´Â°Í°°¾Æ
¿©±â´Ù ´ñ±Û µå¸³´Ï´Ù
ÄÄÇ»ÅÍ2¿¡ ¹æÈ­º®ÀÌ ¿Ã¶ó°¡ÀÖ´Â°Í °°³×¿ä
iptables ÀÏ°Í°°Àºµ¥
iptablesÀ̵ç firewallÀ̵ç È®ÀÎÇϼż­
ÄÄ1 -> ÄÄ3:22 ¹æÈ­º® Á¤Ã¥À»
ÄÄ2¿¡ ³Ö¾îÁּžßÇÕ´Ï´Ù
                         
¹Î»çÀå 2023-02
¸Â³×¿ä. ÄÄ2ÀÇ ¹æÈ­º®À» ³»¸®´Ï±î ÄÄ1¿¡¼­ ÄÄ3À¸·Î ssh°¡ µÇ³×¿ä.
±×·±µ¥ ¹æÈ­º®ÀÌ ÄÑÁ®À־ ÄÄ3¿¡¼­ ÄÄ1·Î ssh´Â µÆ¾ú´Âµ¥ ÀÌ°Ç ¹«°üÇÑ°Ç°¡ º¸³×¿ä?

±×·±µ¥, ÄÄ2´Â ÀÎÅÍ³Ý ¸Á¿¡ ³ëÃâµÉ¼öµµ Àְŵç¿ä. 192.168.0.3(4) °¡ Áö±ÝÀº ¼­ºê³ÝÀÌÁö¸¸ ·ºÀ» À̵¿ÇÏ¸ç °øÀÎIP°¡ ¼³Á¤µÉ¼öµµ ÀÖ½À´Ï´Ù.
±×·¡¼­ ÄÄ2´Â SSH ·Î Á¢±Ù ºÒ°¡´ÉÇÕ´Ï´Ù. ±×·±µ¥, Á¦°¡ ¿øÇÏ´Â°Ç ÄÄ2·Î SSH¸¦ Çã¿ëÇؼ­ ÄÄ2¿¡ SSH¸¦ ºÙ´Â°Ô ¾Æ´Ï¶ó ´ÜÁö °ÔÀÌÆ®¿þÀ̸¦ Åë°úÇؼ­ ÄÄ1->ÄÄ3À¸·Î ssh¸¦ ºÙ´Â°Çµ¥¿ä

±×·³ ÀÌ°æ¿ì ÄÄ2 ¹æÈ­º®¿¡ ¾î¶² ¸í·É¾î¸¦ Áà¾ß ³»ºÎ ¼­ºê³ÝÀ¸·Î ssh Á¢±ÙÀÌ µÉ±î¿ä ? CentOS ÀÔ´Ï´Ù

ps) Æ÷Æ® Æ÷¿öµùÀ» °É¾îÁÖ´Ï±î µÇ±äÇϴµ¥... ±×·±µ¥ Á¦°¡ ¿øÇÏ´Â °ÍÀº ƯÁ¤ Æ÷Æ®¿¡ ´ëÇØ Æ¯Á¤ IP·Î °¡¶ó´Â Æ÷Æ® Æ÷¿öµùÀÌ ¾Æ´Ñ, °¡·É 22¹ø Æ÷Æ®´Â ¾î¶² ÄÄÇ»Å͵çÁö °®À»¼ö Àִµ¥... ƯÁ¤ Æ÷Æ®¸¦ ƯÁ¤ ÄÄÇ»ÅͷΠƯÁ¤ÇÏ°í ½ÍÁö ¾Ê°Åµç¿ä. ±×·³ ÀÌÁ¦ ¾î´ÀÁ¤µµ ¿øÀÎÀ» ¾Ë¾ÒÀ¸´Ï... ÀÌÁ¤µµ¿¡¼­ ¸¶¹«¸®ÇÏ°í ÇÊ¿äÇÏ¸é ´Ù½Ã Áú¹®À» ¿Ã·Á¾ß°Ú³×¿ä. ¸ðµÎ °í¸¿½À´Ï´Ù.
                    
¹è¶×ÀÌ 2023-02
¹æÈ­º®À» ²ô´Â°Ô ¾Æ´Ï¶ó Á¤Ã¥À» ³Ö¾îÁּžßÇÕ´Ï´Ù
iptables¶ó¸é
Forward Á¤Ã¥¿¡
ÄÄ1 -> ÄÄ3:22 tcp Á¤Ã¥À» ³Ö¾îÁÖ¾î¾ß°ÚÁÒ


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