Đề tài: Mô hình hệ thống VPN pptx





Trang 1


=≡≡=
Chúng em xin chân thành cảm ơn quí thầy cô đã giúp đỡ chúng em thực hiện đề tài này.
Đặc biệt thầy Trần Đồng Dũng đã tận tình giúp đỡ, chỉ bảo chúng em. Trong quá trình
làm đề tài có gặp nhiều khó khăn cũng nhờ thầy động viên, giúp đỡ . Chúng em xin trân
trọng cảm ơn những tình cảm quí báu mà các thầy cô Trường cao đẳng nghề ISPACE đã
truyền đạt cho chúng em, những kinh nghiệm, kỹ thuật trong quá trình học tập cũng như
cách thức xây dựng đề tài này.
Nhân đây cũng xin gửi lời cảm ơn đến cộng đồng IT trên các diễn đàn cũng như các
website liên quan đã tận tình giúp đỡ.
Tuy nhiên, do thời gian có hạn nên chúng em không thể phát huy hết những ý tưởng.
Trong quá trình làm đề tài, không thể tránh khỏi những sai xót, mong nhận được sự đóng
góp và cảm thông của quí thầy cô và các bạn.
Cao Đẳng Nghề ISPACE
Nhóm Thực hiện đề tài:
Nguyễn Quang Ninh
Hứa Minh Thành
Nguyễn Đăng Trung
TPHCM, ngày…tháng…năm…
Trang 2

 !"#$%&'






































((

 !"#$%"%
Trang 3

&'()*)+,
-./0
12
.34#54/
&'()*)675854/
-9:/!!;<35=
>?@A>?
)B#$5
&9CB#$5
DEFG
.#%3#%
&#%3#%
H,.)=
#.#I)75J<3
)$
$*!+,
Trang 4

1.  /01234535
K5LML@N8O)P!Q/?RBSTUVW+/W+XYXZB$/#([).R
+54/@%3B\5V]B9C.#(J, ^#7) \J<K/+BB9_/
")V`

3J3</K5Lab@,/#^#.*B*);#,B,)=/cd%"%efB\@54/
gB9C/h#.XYXZ
_#Ji;j/k[l67%"%B9CT.=! 3/#c7=!#(LmnJ#k
[J37ho)P/#7?pqr.=!54/.#(J,")/U55V].^ ^#
7)/h#.qrZ#`)W37/#I!BS)V$sXYXZ7/qrZ.
_#Ji;j/k[7# ^#+T)l#I67tttut3".Wt#W%t%;v
2. '()*)+,
Nw/)s58)+,J#558J7/7V58k[53/5)P
\$J,P#58\#I)o)<^#"xy K!Q/]z/o)754/W#I"8/
tX
#ITUVW+/5854/"#(/"(58J) +8#;86758Q7 K!Q/
\$9:/BP#B:/#<@;y# z/V9_/\J#,"f =.{"#(/W3B\7
\$Wx/J,P#54/XB$+#I
9/ #ITUVW+/5854/)/;73/5c/ K!Q/J7)7V
J#,"f"lT77)4#!P7V4#9^#IB\58.+7h
Wx/58J()("#(/u#%"%.%7%W.#%v)(s58)/l!W x54/
)r|/47VW)/c/!9:/#IJ3</T7B$J,P#c/5V
].4# ^#7)
Trang 5

6
c/J,P#B\\9CB#$59[/w `;<l@]5`5W}3
#!]73
=V58 lB`B9CB~"7yBUV..5,3B$J,P#Q7yT7.4# ^#
7)5 gB<5;<3B9C]73Wc.#I)5#!].4#l!@W$o)<.{@W•;<3
0
€#/#^##I)54/"#(/<3uv
Trang 6

3. 78

Jz/!<#.z//I5^#H##I5B*)#( `B9CX•u(
z/V #•z/y?pvB97"7 3J3</)P#=!#(mnB9C;#,B,9
.d54/B9CB/R7;y#!*5`5euq3‚ƒ7"%2%‚#%W%ƒ3"J„q2vq2.
54/tX ^#J3</T7@\B9C#,.=!W"#(/3/9_#Wj/q2W+7
3:yWc.#I)")V=!B$!U.34#")V=! 354/y/*3~sT72+7 3
z/#@/\#Wc.#I)…B9CB)V, B,B]z/o)7:y4*/)V$54
z/8/,I[&67T)l#Ij/ ^#+"7B_#67z//I€&† 
q2 3B*)=!J‡Ln"3/58_#/#7@/#73[€&†o)754/q2B9C
#,.=!9./#73[67@)V#(@ˆ.I7#.‰#"3/o)"")V`Wg
9Co)+3!Š!23B\,I[7#677\/;.S/o)("3/58
_#/#7/wq7),I[&@"9_/;=5.4#3B,J#z//I
r"75%Y%.7V z//IX?"7B_#,I[-67W+7"(&z//IV
c/  z/  /I  V  W+7  "(  J#  #I5  )V$  54  J(  <3 
"3/_#/#7/*BUV@9:/54#B#IBS"y!9:/[9:/54#c)
#I)@c/V()*)67/9_#Wx/54/‹/"Œ"/:/9_#Wj/53/
5)P/#<#!!5\$W•W/B9C+#I@7VWk#@o)<"@\J<K/")V
=!"(3*) \J<K/)/l!;<35=y5[73@sB*))P#B,B*))P#
,I/*BUVu,I[bv67.BSB![/B9Cl<c/
V()*)V;•/[/Wx/z//IB9_/*5
Trang 7

93:.1;<=
.5854/"#(/Wx/IP/54/z/8/u%"%vB$J,P#
B7B#$53~/9_#Wx/sT7 ^#5854/Xy"xy")/U57V 
Wj/J,P#=J![4!9B9_/WUV)(;73P@43"7.#(J,<3
B9C")V`o)7%"%/#c754/"#(/6758k[ ^#B7B#$53~/9_#
Wx/yT7
?854/"#(/<3W+7"(%"%Wj/:y4*/5y !U67
%"%3 #I")V`Wc.#I)/#c7#%`;<lc/z/VWx/%"%
#,.=!J,P#B,B#$5J,P#x;867)/l!W x%"%

qu#%"%q%" #%"3 #W%"v@/h#.Žu3#3‚"%%%v B$3q;<3B<5"•/
Wc.#I)B9C")V`B,B]z/o)7%"%
Trang 8

>?=@ A535B
%"%.5854/z/8/ ^# #I")V`*),Wc.#I)5y;73
/5)/l!:,5S\7Wc.#I)")V`/#c7#%@•5;<35=Wc.#I)
P/.4#)8lz/Kl!Wc.#I)sc//9_#")V=!;lC!!!
Trang 9

)$
CD,$
1. 2.7EFGF
\7#.34#!k;#,#I7V.")V=!sT7uY%53%X%v 
B#$5P#B#$5u#%3#%v
a. 3:.1;<=H# 5//I
")V=!sT7uX%vQB9C/h#.54/2#7.)!"#(/<3u2v@
.58J,P#/9_#Wj/B,X]Wx9z/V5)P#,.=!58.^!<#
*B,58)/l!W x%"%uqvqV43"7585V6")V=!
54/ )/l!3c//9_#Wx/sT758!*5`55VJ35V
]67hq7)B\@/9_#Wx/\$/h#58P5#•!]B$.#(I ^#5V6
")V=!54/ Wj/!*5`55VJB$")V=! 354/"#(/67z/
V34#V3!Š!J,P#73@\5=5S
b. J4GKKJ4GH/5E/5I
+J,P#7#54/"#(/.}z/o)758B9_/*5;<35=B9_/*5;<3
5=V\$Wx//#73[@&@3~%?xB]]67
X3X.J,P#7#54/.4# ^#7)@z/o)7 #I•7#I!]C!@[/
+@+•5=67Wc.#I)\7#.34#J,P#
Trang 10


K3=5,)58z/V\ #B7B#$5sT75)P75/#7 358
54/"#(/W)Vl@h\$43"758#"7%u8#;8vB$P#X ^#
X
KL<3=5H#58z/V\5P#o)7I5=#, ^#58z/VJu ]
Wx9BP#)/l!@J/v@h\$TUVW+/58%T"7%u5y
"8/vJ,P#X ^#XB$#`)k[J7)\$.5 #I"(585z#
"9_/)/
>/5E/5
2. MN.O.P=GQGF
Tính tương thích
Tính khả dụng
An toàn và bảo mật dữ liệu
Trang 11

R75E/5/5E/5
a. !STUS.
]9:/]u35!7#;#.#Vv?‰#z/V@5‰#W37/#I!B`)B9CTUV
W+/IP/54/8#;8 W#I"8/675W+7"(6xJ7) 
Jz/)U%358)•lB67)/l!W xYl#`)IP/
54/Jz/Wx/)•‘  =VJz/$J,P#"+#,! ^#%"%
$\$Wx/B9Cl<IP/54/"#(/B`)!<#B9C)V$
7/58IP/B7ˆ%3)•Wx/"3/%"%‹/9;k)/]
K/ `43J(J,P#<3@#B~k/J,P#%"%\[K/"3/ #I)V$
Bk#6xJ7)7/)•aa’P.9C/J/B9C•#V()*)J#
h58)/l!W x!<#9:/] ^##,;#I\67h
b. !SVW@A
]J<Wx/uX 7#.7;#.#Vv?8/#<#!!*#,!<#)/l!B9C]
;<3B<5 `l.9C/@#I))lWx/W x‹/9W)/.9C/")V`#()
)• `l.9C/W xuO3qv#())•B/#675854/.9^#\J<K/
B<5;<3l.9C/W x)/l!B*))P#B,B*))P#O3q.#(o)7B,J<K/

B<5;<3B8"•W x"3/58!45 #lB3~.#(o)7B,<7# lB`
"(
Trang 12

c. #E@X7
?4/*)/l!b[K//#^#4B$B<5;<3B8;<35=3/#c.#I)
+ Xác thực(Authentication):B<5;<3/#c.#I)B,s/)V()*)
+ Điều khiển truy cập(Access control):7, #IB4B9Co)V`3!Š! 3
54/67c//9_#Wj/;lC!!!
+ Tin cậy(Confidentiality):/KJz/3587B\Bh7V73Š!Wc.#I)J#
Wc.#I)B9C")V`B#o)754/%"%
+ Tính toàn vẹn của dữ liệu(Data integrity):B<5;<3Jz/37#.57VBk#
Wc.#I)J#\")V`B#"(54/%"%
3. 2.1TU121YWEG
a. Tường lửaHZ35[=77I
."3w c/w/#c754/"#(/ %"%N4\$#,.=!9_/.7B$
4,P.9C/k/5y@.34#/\## /#73[B9C)V$o)7
b. <2.\.
-Mật mã truy cập.J#585V]5S\7Wc.#I) /#\^#585V]J
ˆ\5VB\5^#/#<#5SB9C\7#.34#.5=5S"#(/ 5=5S)/
+ Mật mã riêng (Symmetric-Key Encryption):?‰#5V]B`)\585S;]5=
B$5S\7/\##"9^J#/#^#5V]J"3/54/?S"#(/V()*);4!<#
;#,5B7/.#(I ^#c/5V]3B$\$#5S.(B\@B$5V]67
/9_#=\$/#<#5SB9C
+Mật mã chung (Public-Key Encryption):J,C!5S"#(/ 585Sz/8/
?S"#(/Vˆ\5V67;4=;#,@Q5S)/W35V67;4l!3
;lJi5V35)P.#(Iu5873v ^#\$/#<#5S585%7/%@5V
]!<#Wj/5S)/B9C5V]/))/l!@B/_#*B,5S"#(/67
\c7\58[/Wx/.34#VB9CWj/"l!k;#,."%V33W"# 7Vuv@
3!Š!;45S\7*)9;l[[/

Trang 13

- Dựa vào các phương pháp xác thực mật khẩu như:5=J•)")V`P/@5=J•)
58.*uq‘H%Vv7VIP/5=J•)JuX@X@XXq@YX2qv
- Một khóa hay một card token:7"W/#P/9}X?7V}]Wx/
- Đặc tính nhận dạng:#h/\#@o)Š Œ/54@Wl) U7V“
!].W.2.1TU121YWEGJ^JJT_.?=.2.=E`.JTaOG
YWEG.P=GF
K#73[)V$#,!.^!&&ru7V%"&r3"ƒ7"W#/v
K#73[BB9_/*5B#$5B#$5u3#33#)%.#/"333.v
K#73[BB9_/*5.^!&&u7V%"&)%.#/"333.v
K#73[54/;<35=q%
TaOG3EGF
Kb#bLB.!9:/!!5S\7Wc.#I)
K!NJ/wB7ˆ675V/# 5V=
-  X Zq #()B` 2c.#I)
c$^3EJTaOG
Trang 14

)$
),db)ed
1. )J4G
#<5#$)V()*) `#,;57/.4#.C#]++ [_#3z/
V\$Wj/B$B:/#<\7 #I")V=!BP# ^#U #(.5
#I /9_#Wj/.9)B8/@5y"8/"7%B,s/ K!Q/#@=5
]"#$J7#ZT"7%B,=J/ BP#6P B#`)o)7"h/
.c/z/ #I"(B`)\#!]l!:#`)3 ^# #I5)7#,; 
B9_/WUV354/tX"#(/
• Giảm chi phí thường xuyên : 3!Š!#,J#I5#!]3 ^#)(
B9_/")V` /#<5B/J$#`9^/h#B,67U #(.5 #Iy

T7#<5B9C9^!]B9_/W#J#")V=!3U #(W#
B8/ U #(.5 #IyT7_ 3 #Ih")V=! 354/z/
o)7B#$5J,P#Žu3#3‚"%%%vyB7!9:/@4,/h#B9_/
W#B,53W%5=!")/
• Giảm chi phí đầu tưq…Jz/P#!]B*)935V6@;8B)V,
354/B9_/"x ;8)V$54!x x3 #I")V=!;y# 
#,;VW3)/l!W xo)<.{ .56z/V‹/
Jz/!<#5)7@#,.=!l)3~o)<.{\553W%5![4!
• Truy cập mọi lúc, mọi nơi:.#%67‹/\$")V=!l<
W x9ƒƒƒ@%57#.@r“‹/9[/Wx/#,V,)J5
Jz/*o)7U5B,c/!*![4!;(W9^#
• Khả năng mở rộng : 23Wx/5z#"9_/ z//I9:/+
%"%3( ^#58%"%@ K!Q/@\5 BP#9C/
W#B8/\$"y(58!*6754/y;lJi:#35q)/
l!58B#$5J,P#x;8Ž
![/)*)9:/54#3!Š!]C!#`)z//I5^# 354/
Trang 15

2. T_.J4G
^#c/9)B#$59"(B7/..+7hP3W37/#I!
)V#(Jz/!<#Jz/\9CB#$5@5~WjJz//s/B9C<##,@
U/l! ‰"C#`)z/x5^#K/];<35=9/W9_/9B\ g.58
lB$J.^67
”73 lB`;<35=.4#.^9 =VBP# ^#0?8.{W3.B97
z/#\]"#(/9 o)7"h/o)75854/)/\B8;<35="lJŠ5
u9_/.%"%v{W3;lz/67\ #.{W37)+"7B)7/#c7
z/V@+75.755)P#,5/)z/#@+"<j@<5/#54“
”7#z/P54/.B8"• z/.9C/7;#,"•/4V"(5854/
)/%"%?B~j6754/%"%.54/\l)"fB:/#<@.9).9C/#
.^@J\W+B3‹/] ,5 #Io)<.{l.9C/3s/W x."l

J\JK
”H<K/o)<.{‹/. lB`J\JK67‹/ ^#.{W3.4V
/7/o)754/%"%(J<K/o)<.{J,P#%W3%Ws!]758)/
l!B:.}.B#`)Jz/$+#IB9C,)/l!W xuqvJz/$
)/l!l.9C/nn’975J,5ˆ\$P,[‹/\58.P#3.
)/l!J{J, ^#7);<3<)= `z/P54/@B<5;<3l
.9C/W x3J/)V#(75J,V‹/Jz/B<5;<3nn’
Trang 16

)$
f!ghL!K!&KB!LhB!LK!&KB!L
!iY-/0@A
MN.O1O.`
• ?8?3W%5X2q
• *\58B9_/")V`X2qPB873u,).W xX2q ^#B7
ˆR/Pv!x x3o)"J,P# ")V`z//#c7
"3/ /3#z/V/9_#Wj/yT7u.#%v…J,P#B,
5V6)/l!W xq%" %"B$/#7=!IP/54/"#(/<3
67z/V B9Cl!!B7ˆ]C!B$J,P# ^##
/)V(8#;867z/V
• ?85V6#B~t#W3ƒq%" %"&nn-3~t#W3ƒq%" %"&nnn
.55V6uq%" %"v@\7"W54/J,P# ^#IP/
54/8#;8 587"W54/J,P#^#.^!54/4VW x%"%
;(/3#X2q
• 5V6q%" %".55V?7#.%" %"7Vt%;%" %"“ 5V
.#%J,P# ^#7"W54/8#;8z/o)75V%" %"
• P# ^#)%";(/3#\$Wj/5V7V.7!3! J,P#%"%
z/o)7B9_/")V`92#7.)!@X2q“
MN.O1OGG
• ?85V]%" %"Wx/t#W3ƒ%" %"&nn-

• ?85V62Wx/t#W3ƒ%" %"&nn-
• ?85V].#%Wx/t#W3ƒ€@#77Vt#W3ƒa
Trang 17

6j 75E/5
Trang 18

67q#%]
2: k.S l6 l9 l>
 =G5
/=mj=G1lj
.EG
Dj=G1lj.EG 75
#@@35// L&Mmn  L&Mm-†
Trang 19

=3@
L<5357
BY5=/V &††&††&††n  &††&††&††n
D5Z=7=5[=: L&Mm  L&Mm
35Z5335@DB L&Mm  L&Mm
=3@
5357
#@@35// a&Mmn a&Mmn&
BY5=/V &††&††&††n &††&††&††n
D5Z=7=5[=:  a&Mmn
35Z5335@DB a&Mmn& a&Mmn&
XY2ZT%"7.67nP# ^#?3W%5 l!B7ˆR
XY2%"7.67nP# ^#n&
"(5VqX&nnMl!!35V"%53%^#54/8#;8

Trang 20

.#J34.#%7%
Trang 21

"(243)%"")V=!
Trang 22

3!Š!)%" !"V=!
Trang 23

43Y).%.#%3#%
Trang 24

?yl<"7‚‚#
Trang 25