TELNET
|
RBJ
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Title
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:
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Telnet
|
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Issue Date
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:
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20 Agustus 2016
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|
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Prepare By
|
:
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Yada Aulia
|
|
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Class
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:
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XII TKJ 2
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|
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Teacher
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:
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Suyatno, S.Kom
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SMK AL-BAHRI KOTA BEKASI
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||
Telnet
Topologi
Device
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Interface
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IP Address
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PC-0
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Fa0
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192.168.10.10/24
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Router 0
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Fa0/0
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192.168.10.1/24
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Pasang IP Address
di router interface fa0/0
Router(config)#int
fa0/0
Router(config-if)#ip
address 192.168.10.1 255.255.255.0
Router(config-if)#no
sh
Setting
authentication di line telnet, jika ada PC yang hendak telnet ke router maka akan
diminta password authentication:
Router(config-if)#line
vty 0 4
Router(config-line)#password
ccie
Router(config-line)#login
Router(config-line)#
Outputnya
akan seperti ini:
Packet
Tracer PC Command Line 1.0
PC>telnet
192.168.10.1
Trying 192.168.10.1
...Open
User Access
Verification
Password:
Router>en
% No
password set.
Router>
Artinya kita bisa masuk ke router
tetapi tidak bisa masuk ke mode privilege, Nah agar kita bisa masuk ke
privilege mode maka kita harus setting routernya sbb:
Router(config)#enable
password ccie (password bisa diganti)
PC>telnet
192.168.10.1
Trying
192.168.10.1 ...Open
User Access
Verification
Password:
Router>en
Password:
Router#conf
t
Enter
configuration commands, one per line.
End with CNTL/Z.
Router(config)#
Settingan yang tadi kita buat masih
ada kelemahan yaitu password yang kita buat masih bisa dibaca pada saat
menampilkan “show run”, lebih baiknya dienkripsi terlebih dahulu.
Hasilnya
password dapat dilihat:
Building
configuration...
Current
configuration : 541 bytes
version 12.4
no service
timestamps log datetime msec
no service
timestamps debug datetime msec
no service
password-encryptionhostname Router
enable password ccie
agar
password tidak kelihatan maka kita perlu masukakkan script ini :
PC>telnet
192.168.10.1
Trying
192.168.10.1 ...Open
User Access
Verification
Password:
Router>en
Password:
Router#conf
t
Enter
configuration commands, one per line.
End with CNTL/Z.
Router(config)#do
sh run
Building
configuration...
Current
configuration : 541 bytes
Router(config)#
service password-encryption
Router(config)#do
sh run
Building
configuration...
Current
configuration : 554 bytes
version 12.4
no service
timestamps log datetime msec
no service
timestamps debug datetime msec
service
password-encryption
hostname
Router
enable
password 7 08224F470C
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