cmd
|
¸í·É ÇÁ·ÒÇÁÆ®¸¦ °ü¸®ÀÚ ±ÇÇÑÀ¸·Î |
¨ç ³» WIFI »ç¿ë ¿Ü ¸ðµÎ ¾Èº¸ÀÌ°Ô
|
netsh wlan add filter permission=denyall networktype=infrastructur
|
¨è WIFI ƯÁ¤ SSID¸¸ º¸ÀÌ°Ô
|
netsh wlan add filter permission=allow ssid="OldAudiocom" networktype=infrastructure
netsh wlan add filter permission=allow ssid="U+Net9953" networktype=infrastructure
|
¨é WIFI ¸ðµÎ º¸ÀÌ°Ô
|
netsh wlan delete filter permission=denyall networktype=infrastruct
|
Network
PC - Gateway(Server) - Router (¶ó¿ìÅÍ) - {CSU} - ..........- {CSU}
- Router - Gateway(Server) - PC
TCP, IP, SMTP, POP3...... (<<
Protocol)
Network Á¢¼Ó¹æ¹ý ¢Ñ busÇü
: ´Ù¿îÀÌ µÉ ¶§´Â Àüü°¡ ´Ù¿î ringÇü :
starÇü
: ºñ¿ëÀÌ ¸¹ÀÌ µç´Ù. º¸¾È¼ºÀÌ ÁÁ°í ¼Óµµ°¡ ºü¸£´Ù.
mesh(¸Þ½¬)Çü
: ±×¹°¸ð¾çÀ¸·Î ºñ¿ëÀÌ ¸¹ÀÌ µç´Ù
Network ±³È¯¹æ½Ä ; PSTN, Dial-up,
Circuit Swtching(ȸ¼±±³Çѹæ½Ä)
Network Àåºñ - Router (¶ó¿ìÅÍ), CSU, HUB, NIC (Network Interface Card),
Network Á¢¼Ó ¸Åü ; UTP cable ¶Ç´Â Coaxial Cable(µ¿ÃàÄÉÀ̺í), ±¤ÄÉÀ̺í,
À§¼º(¹«¼±)
VPN ; °¡»óȸ¼±
Network Layer
¢Ñ
OSI(Open System Interconnection) 7°èÃþ
Layer |
°èÃþ |
±â
´É |
Application
layer |
ÀÀ¿ë°èÃþ |
»ç¿ëÀÚ¿¡ ´ëÇѼºñ½º
Á¦°ø. ÀüÀÚ¿ìÆí, ftp, telnetµîÀÇ ¼ºñ½ºÁ¦°ø |
Presentation
layer |
Ç¥¸é°èÃþ |
µ¥ÀÌÅÍÀü¼Û¿¡ ÀûÇÕÇÑ ÇüÅ·Î
¸¸µë »óÀ§ °èÃþ¿¡¼ ³»·Á¿Â µ¥ÀÌÅ͸¦ Àü¼º¿¡ ÀûÇÕÇÑ ÇüÅ·Π¹Ù²Þ |
Session
layer |
¿¬°á°èÃþ |
¿¬°á¼³Á¤ ¹× ÇØÁ¦°ü¸®
Åë½Å¿¡ ´ëÇÑ Á¦¾î±¸Á¶¸¦ Á¦°ø |
Transport
layer |
Àü¼Û°èÃþ |
½ºÅ×ÀÌ¼Ç °£ÀÇ ½Å·Ú¼º
º¸Àå ¿¡·¯Á¦¾î¿Í È帧Á¦¾î¼öÁ¤ |
Network
layer |
³×Æ®¿öÅ©°èÃþ |
ÁÖ¼ÒÁöÁ¤°ú °æ·Î¼³Á¤À»
¼öÇà ³×Æ®¿öÅ©»óÀÇ ³ëµåÀÇ ÁÖ¼ÒÁöÁ¤ |
Data-link
layer |
µ¥ÀÌÅ͸µÅ©°èÃþ |
³ëµå°£ÀÇ ½Å·Ú¼ºÀ» º¸Àå
HDLC, ADCCP, LAP-BµîÀÌ ¿©±â¿¡ ¼ÓÇÔ. |
Physical
layer |
¹°¸®°èÃþ |
ÀÏ·ÃÀÇ ºñÆ® ½ºÆ®¸²À»
Àü±â½ÅÈ£·Î Àü¼Û LANÄ«µå µî |
TCP/IP¿Í OSI 7Layer¿¡ ´ëÇÑ ºñ±³
Application |
Presentation |
Session |
Transport |
Network |
Data-link |
Physical |
|
Application |
|
TCP |
UDP |
|
IP |
|
|
Network Interface |
Physical |
|
|
OSI
7Layer |
TCP/IP |
¡Ø TCP(Transmission Control Protocol) IP (Internet
Protocol)
UDP (User Datagram Protocol)
OSI(Open System Interconnection)
Firewall (º¸¾È½Ã½ºÅÛ) ; Screen Routor¹æ½Ä, Dual Home Gate¹æ½Ä
IDS
(Intrusion Detection System) : ¹æȺ® Á¾·ù·Î pattern¼ö°¡ ¸¹À»¼ö·Ï ÁÁÀ½. ; ħÀÔ¿©ºÎ¸¦ È®ÀÎÈ÷´Â
¹æ¹ý¿¡ ÇÑ°¡Áö.
IDC
ProtocolÀÇ ±â´É
´ÜÆíÈ¿Í ÀçÁ¶¸³, ĸ½¶È, ¿¬°áÁ¦¾î, È帧Á¦¾î, µ¿±âÈ,
¼ø¼°áÁ¤, ÁÖ¼Ò±â¹ý, ¸ÖƼÇ÷º½Ì, Àü¼Û ¼ºñ½º
ºí·çÅõ½º PANs(Personal Area Networks)
IEEE 802.15.1 ±Ô°ÝÀ» »ç¿ëÇÏ´Â ÀÇ »ê¾÷ Ç¥ÁØ
• ºí·çÅõ½º ¹öÀü 1.1·Î °úÇÐ & ÀÇ·á(ISM)¹êµåÀÎ 2.45GHz¸¦ »ç¿ë
• 10m(100)Á¤µµÀÇ ¹üÀ§¿¡¼ »ç¿ë°¡´É
• ½ºÆÑÆ®·³ È®»ê¹æ½Ä(SS)À» »ç¿ëÇϹǷΠ°£¼·ÆÄ¿¡ °ÇÏ´Ù.
• ºí·çÅõ½º´Â ºü¸£°í ¾ÈÁ¤ÀûÀÎ µ¥ÀÌÅÍ ¼Óµµ¸¦ Á¦°øÇϱâ À§ÇØ ÁÖÆļöÈ£Çιæ½Ä(FHSS) »ç¿ë
• ¾à 1Mbit(720kbps)ÀÇ µ¥ÀÌÅÍ¿Í À½¼ºÀ» µ¿½Ã¿¡ Àü¼ÛÁö¿ø
• Bluetooth 1.1 specifies a wireless technology in the unlicensed 2.45GHz Industrial, Scientific and Medical (ISM) band.
• Supports a range of 10 (100) meters
• Requires the use of spread spectrum transmission technology resistant to interference.
• Bluetooth deploys fast rate frequency hopping (FHSS) to provide robust data transmission
• Supports simultaneous transmission of both voice and data with approximately 1 Mbit/s (720 kbps) data rate
¹«¼± ·£ (Wireless Local Area Network) IEEE 802.11 (¿ÍÀÌÆÄÀÌ(Wi-Fi))
802.11
|
Speed
|
Freq.
|
Security
|
a
|
54Mbps
|
5GHz
|
º¸Åë
|
b
|
11Mbps
|
2.4GHz
|
Ãë¾à
|
g
|
54Mbps
|
2.4GHz
|
º¸Åë
|
n
|
300Mbps
|
2.4/5GHz
|
º¸Åë
|
LAN (Local Area Network
; ·ÎÄà ¿¡¸®¾î ³×Æ®¿öÅ© ; ±Ù°Å¸®
Á¤º¸ Åë½Å¸Á)
Ethernet
LANÀÇ
´ë¸í»ç·Î 1976³â ¹Ì±¹ÀÇ Á¦·Ï½º»çÀÇ ¿¬±¸¼Ò¿¡¼ °³¹ßÇÏ¿©
3MbpsÀÇ ¼Óµµ·Î ÃÖÃÊ·Î ½Ç¿ëÈ µÇ¾úÀ¸¸ç, DEC,ÀÎÅÚ, Á¦·Ï½º
3»ç °øµ¿À¸·Î EthernetÀÇ Ç¥ÁØÈÀÛ¾÷À» Çϱ⠽ÃÀÛ Çß¾ú´Ù.
ÃÖÃÊÀÇ Ç¥ÁØȱ԰ÝÀº 1980³â °ø°³ÇÑ DIX Ethernet
V1.0 À̸ç À§ 3»çÀÇ ¸Ó¸®±ÛÀÚ¸¦ µû¼ ¸í¸íÇÏ¿´´Ù. µ¥ÀÌÅÍÀÇ
Àü¼Û¼Óµµ´Â 10Mbps¿´À¸¸ç, Àü¼Û¸Åä´Â µ¿ÃàÄÉÀ̺íÀ» »ç¿ëÇÏ¿´´Ù.
Àü¼Û¼Óµµ ¾à 10MbpsÁ¤µµÀÌ°í ³ëµå°¡ Àü¼Û·ÎÀÇ ½ÅÈ£¸¦
°¨½ÃÇÏ¿© ´Ù¸¥ ³ëµå°¡ ¸ðµÎ ½ÅÈ£¸¦ ³»Áö ¾Ê´Â °ÍÀ» È®ÀÎÇÑ
ÈÄ¿¡ µ¥ÀÌÅ͸¦ º¸³»´Â CSMA/CD ¿¢¼¼½º¹æ½ÄÀ» ÀÌ¿ëÇÑ´Ù. |
(»ý·«)
10BASE-T
10Mbps±îÁöÀÇ Àü¼Û¼Óµµ¸¦ Áö¿øÇÏ´Â
´ë¿ªÆøÀ»±îÁö¸ç, Category 5ÄÉÀ̺íÀ» ÀÌ¿ëÇÏ´Â EthernetÀÎÅÍÆäÀ̽º.
RJ45 (8ÇÉ ¸ðµâ¶ó) <¡Ø
8P8C/RJ45, 6P6C/RJ12, 6P4C/RJ11(ÀüȱâéÄ)>
10BASE-T ³ª 100BASE-TX¿¡¼ »ç¿ëÇÏ´Â
8ÇÉ ¸ðµâ¶óÄܳØÅÍÀÌ´Ù. ÇÉÁ¢¼Óµµ´Â ¾Æ·¡ ±×¸²À» ÂüÁ¶ÇÑ´Ù.
ÇɹøÈ£ |
½ÅÈ£ |
1 |
TD+ |
2 |
TD- |
3 |
RD+ |
4 |
N.C |
5 |
N.C |
6 |
RD- |
7 |
N.C |
8 |
N.C |
|
RJ45 |
|
|
10BASE-T¿ë
ÄܳØÅÍÀÇ ½ÅÈ£ |
´Ü¸»(MAU)¿ë
MDIÄܳØÅÍ |
Æ®À§½ºÆ®Æä¾î
¸µÅ©¼¼±×¸àÆ® ÄܳØÅÍ |
UTP CABLE Cat.5 Á¦ÀÛ¹æ¹ý (EIA/TIA 568B±Ô°Ý)
ÇɹøÈ£ |
½ÅÈ£ |
¼±
»ö°¥
|
|
Cross
|
ÇɹøÈ£ |
1 |
TD+ |
|
¡Ü
|
ÁÙ¹«´Ì ÁÖȲ»ö(white orange)
|
|
¡Ü
|
1 |
2 |
TD- |
¡Ü
|
ÁÖȲ»ö (orange)
|
¡Ü
|
2 |
3 |
RD+ |
|
¡Ü
|
ÁÙ¹«´Ì ³ì»ö (white green)
|
|
¡Ü
|
3 |
4 |
N.C |
|
ÆĶõ»ö (blue)
|
|
4 |
5 |
N.C |
|
|
ÁÙ¹«´Ì ÆĶõ»ö(white blue)
|
|
|
5 |
6 |
RD- |
¡Ü
|
³ì»ö (green)
|
¡Ü
|
6 |
7 |
N.C |
|
|
ÁÙ¹«´Ì °¥»ö (white brown)
|
|
|
7 |
8 |
N.C |
|
°¥»ö (brown)
|
|
8 |
|
|
´Ü¸»(LAN
Card)°ú ´Ü¸»(LAN Card)³¢¸®´Â Å©·Î½ºÄÉÀ̺íÀ» »ç¿ë |
Çãºê,
ADSL¿ÜÀå¸ðµ© µî °ú ´Ü¸»»çÀÌ´Â ½ºÆ®·¹ÀÌÆ®ÄÉÀÌºí »ç¿ë
(Çãºê, ADSL¿ÜÀå¸ðµ© µîÀº ³»ºÎ¿¡¼ Å©·Î½ºµÇ¾î ÀÖÀ½.) |
10BASE-T
¿¡¼´Â ½Çµå¾ÈµÈ Æ®À§½ºÆ® Æä¾î¼±(UTPÄÉÀ̺í ; Unshelded
Twisted Pair cable)À» Ŭ·Î½º Á¢¼ÓÇÏ¿© MAU°£ Åë½ÅÀÌ °¡´ÉÇÏ°í,
Çãºê¿Í MAU(´Ü¸»)°£¿¡´Â ½ºÆ®·¹ÀÌÆ® ÄÉÀ̺í(Straight-through
cable)À» »ç¿ëÇÏ¿©¾ß Åë½ÅÀÌ °¡´ÉÇÏ´Ù. |
UTP(UTPÄÉÀ̺í ; Unshelded Twisted Pair cable)ÀÇ Category
TIA/EIA
Category |
Á¤ÀÇ |
¿ëµµ |
Category 1 |
ÀüÈ¿ë°ú µ¥ÀÌÅÍ Àü¼Û°¡´É |
Àüȱâ (À½¼º) |
Category
2 |
4 Mbps±îÁöÀÇ µ¥ÀÌÅÍ Àü¼Û°¡´É |
T-1(1.544Mbps) ISDN |
Category
3 |
10 Mbps±îÁöÀÇ µ¥ÀÌÅÍ Àü¼Û°¡´É (16MHz±îÁöÀÇ
Àü¼ÛƯ¼º, 100§Ù) |
10BASE-T, ISDN, Àüȱâ (À½¼º) 4
Mbps Token-Ring |
Category
4 |
16 Mbps±îÁöÀÇ µ¥ÀÌÅÍ Àü¼Û°¡´É (20MHz±îÁöÀÇ
Àü¼ÛƯ¼º, 100§Ù) |
16 Mbps Token-Ring |
Category
5 |
100 Mbps±îÁöÀÇ µ¥ÀÌÅÍ Àü¼Û°¡´É (100MHz±îÁöÀÇ
Àü¼ÛƯ¼º, 100§Ù) |
100BASE-T,
100BASE-ASE-VG ATM |
Category
6 |
|
|
¡Ú 1 : 1 ³×Æ®¿öÅ©
±¸¼º ¿¹ ; ³×Æ®¿öÅ©±¸¼º - TCP-IPµî·ÏÁ¤º¸¿¡ ¾Æ·¡¿Í °°ÀÌ ¼³Á¤ÇÏ°í
IPX/NetBEUIÇÁ·ÎÅäÄÝ
¼³Ä¡. UTP Cross cable »ç¿ë
¼¹ö :
IP ; 192.168.1.1 ¼ºê³×Æ®¸¶½ºÅ© ; 255.255.255.0 Gateway
; 192.168.1.2
Ŭ¶óÀ̾ðÆ®
: IP ; 192.168.1.2 ¼ºê³×Æ®¸¶½ºÅ© ; 255.255.255.0
Gateway ; 192.168.1.1
°øÀ¯Æú´õ
¸¸µé¾î È®ÀÎÇÑ´Ù.
|
¢Ñ
HUB (Çãºê)
³×Æ®¿öÅ©»ó¿¡¼ ¿©·¯ °³ÀÇ Å͹̳ÎÀ» ¿¬°áÇϱâ À§ÇÏ¿©
»ç¿ëµÇ´Â Åë½Å Á¢¼ÓÀåÄ¡.
Switching Hub : ¿©·¯ ´ëÀÇ ÄÄÇ»Å͸¦ ¿¬°áÇÏ¿©µµ ¿ø·¡
¼Óµµ´ë·Î »ç¿ëÇÒ ¼ö ÀÖ´Â Çãºê
Dummy Hub : ȸ¼±ÀÇ ¼Óµµ°¡ Á¢¼ÓµÇ´Â ÄÄÇ»ÅÍÀÇ °³¼ö´ë·Î ¼Óµµ°¡ ³ª´µ¾î Áø´Ù
Stackable Hub : ´õ¹ÌÇãºê¸¦ ¿©·¯ °³ ½×¾Æ ³õÀ» ¼ö ÀÖ´Â Çãºê
Intelligent Hub : ´õ¹ÌÇãºêÀÇ ±â´ÉÀ» °¡Áø ÄÄÇ»ÅÍ¿¡ ³×Æ®¿öÅ© °ü¸®±â´ÉÀÌ Ãß°¡µÈ
Çãºê
¢Ñ
Router (¶ó¿ìÅÍ)
- ¿©·¯ °³ÀÇ ¼·Î ´Ù¸¥ ³×Æ®¿öÅ©¸¦ »óÈ£ ¿¬°áÇÏ¿©
ÇϳªÀÇ ³×Æ®¿öũó·³ Åë½ÅÀÌ °¡´ÉÇÏ°Ô ÇØÁÖ´Â ³×Æ®¿öÅ© ¿¬°áÀåºñ
- ÁÖ·Î LAN°ú LANÀ» ¿¬°áÇϰųª LAN°ú WANÀ» ¿¬°áÇϱâ À§ÇÑ Internet working Àåºñ
- ³×Æ®¿öÅ© »óÀÇ ¼Û¼ö½ÅÁö¿¡¼ ¼ö½ÅÁö±îÁö
ÃÖÀûÀÇ °æ·Î¸¦ ã¾Æ¼ µ¥ÀÌÅ͸¦ º¸³»´Â °æ·Î
¼³Á¤±â´É(Routing±â´É)À» °¡Áö°í ÀÖ´Ù.{ÃÖ´Ü°æ·Î¼³Á¤}
- ºÒÇÊ¿äÇÑ ¹æ¼ÛÆÐŶ(Broadcasting Packet)À̳ª ¸ÖƼÄɽºÆà ÆÐŶ(Multicasting Packet)µîÀ» ´Ù¸¥ ³×Æ®¿öÅ©·Î
Àü´ÞµÇÁö ¾Êµµ·Ï ÇÏ´Â ÇÊÅ͸µ ±â´É Á¦°ø
- ÀÌ ÇÊÅ͸µ ±â´ÉÀ» ÀÌ¿ëÇÏ¿© ƯÁ¤ »çÀÌÆ®·ÎºÎÅÍ Á¢¼ÓÀ» Â÷´ÜÇϰųª, ƯÁ¤ »çÀÌÆ®¿¡
Á¢¼ÓÇÏ´Â °ÍÀ» Â÷´ÜÇÏ´Â º¸¾È ±â´Éµµ Á¦°ø
- ¶ó¿ìÅÍ »óÈ£°£ÀÇ »óÅÂÁ¤º¸¿Í ¶ó¿ìÆà Á¤º¸¸¦ °øÀ¯ÇÏ¿©, ³×Æ®¿öÅ©°¡ ´À¸®°Å³ª °íÀå³
³×Æ®¿öÅ©´Â ¿ìȸÇÏ¿© Åë½ÅÇÒ ¼ö ÀÖ´Â ±â´ÉÀ» Á¦°ø
- ¶ó¿ìÆà ÇÁ·ÎÅäÄÝ
* RIP (Routing Information Protocol) ; TCP/IP¿Í IPXÇÁ·ÎÅäÄÝÀÌ
Áö¿ø
: °Å¸® ¹éÅÍ ¾Ë°í¸®Áò(Distance
Vector Algorithm)À» »ç¿ëÇÏ¿© °æ·Î¸¦ ¼³Á¤
°¢ ¶ó¿ìÅÍ´Â
ÀÎÁ¢ÇÑ ¶ó¿ìÅÍ¿Í ÀÚ½ÅÀÌ ¾Ë°í ÀÖ´Â ³×Æ®¿öÅ© »óŸ¦ °Å¸® °³³äÀ¸·Î Àü´ÞÇÑ´Ù
* OSPF (Open Shortest Path First) ; TCP/IPÇÁ·ÎÅäÄÝÀÌ Áö¿ø
:
¸µÅ© »óÅÂ(Link-State)¸¦ °¡Áö°í ¶ó¿ìÆÃÇÑ´Ù.
- ¶ó¿ìÅÍ Á¾·ù
³×Æ®¿öÅ© |
¶ó¿ìÅÍ |
±â´É |
ÀÎÅÍ³Ý |
IP Router |
TCP/IP
ÆÐŶÀ» ¿î¿µ |
IPX / SPX
³×Æ®¿÷ |
IPX Router |
IPX / SPX
ÆÐŶÀ» ¿î¿µ |
DECnet |
DECnet
Router |
DECnet
ÆÐŶÀ» ¿î¿µ |
¢Ñ
CSU
(Channel Service Unit)
- ³×Æ®¿öÅ©¸¦ ÅëÇÏ¿© ¿ÜºÎ·Î µ¥ÀÌÅ͸¦ Àü¼ÛÇÏ´Â °æ¿ì ¿ÜºÎÀÇ Àü¿ë¼±À̳ª WAN(wide
area network)¿¡ ¶ó¿ìÅÍ(router)¸¦ ¿¬°áÇϱâ À§ÇÑ Áß°£Àåºñ.
- 1channel = 64Kbps
128Kbps´Â 64*2=128 >> 2°³ ä³Î»ç¿ë
- T1 Æ®··Å© ´ç 64Kbps ×24channel = 1.544Mbps T3 Æ®··Å© ´ç Kbps ×
channel = 45Mbps
E1 Æ®··Å© ´ç 64Kbps ×30channel = 2.048Mbps
¢Ñ
Reapeater
- ³×Æ®¿öÅ© Áß°£ º¸»óÀåÄ¡ (ÁõÆø, ÆÄÇüÁ¤Çü)
¡Ø NetBEUI : Windows NT, Windows for Workgroups ¶Ç´Â LAN Manager ¼¹ö¿¡ ¿¬°áÇϴµ¥
»ç¿ëÇÏ´Â ÇÁ·ÎÅäÄÝ.
¡Ø SMTP (simple mail transfer protocol )
:SMTP¿Í
°ü·ÃµÈ ÇÁ·ÎÅäÄÝ¿¡ ´ëÇÑ Ç¥ÁØÀº STD¿Í RFC¿¡¼ Á¤ÇØÁø °ÍÀÌ´Ù.
¼¹ö¿¡¼
¼¹ö·ÎÀÇ ÇÁ·ÎÅäÄÝÀ̸ç ÀÌ¿ÜÀÇ ´Ù¸¥ ¿©·¯ ÇÁ·ÎÅäÄÝÀº ¸Þ½ÃÁö¸¦ Á¢¼ÓÇϱâ À§Çؼ »ç¿ëÇÑ´Ù.
¡Ø POP3 :
¡Ø FTTH(Fiber To The Home)´Â ±¤ÄÉÀ̺í(optical fiber)À» Áý¾È±îÁö ¿¬°áÇÑ´Ù´Â ¶æÀ¸·Î, ÃÊ°í¼Ó ÀÎÅÍ³Ý ¼³ºñ ¹æ½ÄÀÇ
ÇÑ Á¾·ùÀÌ´Ù. FTTP(Fiber to the premises)¶ó°íµµ ÇÑ´Ù.
¡Ø DHCP (Dynamic Host Configuration Protocol) : DHCP´Â ³×Æ®¿÷ °ü¸®ÀÚµéÀÌ Á¶Á÷ ³»ÀÇ ³×Æ®¿÷ »ó¿¡¼ IP ÁÖ¼Ò¸¦ Áß¾Ó¿¡¼ °ü¸®ÇÏ°í ÇÒ´çÇØÁÙ ¼ö ÀÖµµ·Ï ÇØÁÖ´Â ÇÁ·ÎÅäÄÝ.
|