Thu+a chu+ di. tie^`n bo^'i, tui co' ca'i laser printer tro?ng co'
network card dde^? no^'i do^ ma.ng trong nha`. No' cho
option TCP/IP la` auto or manual, tui cho.n manual ro^`i cho
no' so^' 192.168.1.123 . No'i cho ngay tui chi? bie^'t cho.n
pha^`n dduo^i 123 cho de^~ nho+', co`n pha^`n 192.168.1
tui ho^?ng hie^?u a^'t gia'p ta.i sao. Xin ho?i no' la` convention
ba('t buo^.c pha?i nhu+ dza^.y hay co' the^? cho.n so^' kha'c?

Ke^' ddo' no' ho?i subnet mask, mo^.t la^`n nu+~a tui mu`
mo+` dda(.t no' la` 255.255.255.0 thi` no' cha.i okay. Nhu+ng
tui muo^'n ho?i cho ra dda^`u dduo^i ta.i sao 255.255.255.0,
gia? su+? nhu+ dda(.t subnet mask la` combination gi` kha'c
thi` ga^y ra vou+'ng dde^` gi`? Xin chi? da.y giu`m, thanks.

On Nov 4, 8:54 am, "[2Le]" <sir...@gmail.com> wrote:

Ba'c du`ng 192.168.1.x la` thuo^.c trong 1 network cu?a class C
address private addr, co`n subnet
mask 24 bit, network portion, 8 bit for class C hosts  (1-254 hosts -
last octet)

Co`n ne^'u ba'c muo^'n break ra nhie^`u subnets nho? trong Class C
thi` ca'i pha^`n host no' nho? ho+n (tu+` 2 cho to+'i 127 hosts trong
class C)

DDo.c the^m pha^`n subnet cho class C sau:

http://www.web-articles.info/e/a/title/Public-and-Private-IP-Addresses/
http://winhlp.com/node/65

Co`n khi assign IP kho^ng ddu'ng trong subnet cu?a no' thi` no' se~
kho^ng work (bi. routing problem)
hoa`n toa`n, vi` ca'i subnet mask va` broadcast kho^ng thuo^.c trong
ca'i range cu?a no'.

tuna,

tui kho^ng pha?i la` tie^`n bo^'i cu?a Sir nhu+ng tui cu~ng la`m ngon gia?ng
gia?i cho Sir ne`  :-))

Mr Tuna gia?ng -du'ng ro^`i, tui chi? no'i cho ro~ ra`ng ho+n chu't:

IP address no'i chung la` co' chu? he^'t, cu?a ai ngu+o+`i na^'y xa`i cho+'
kho^ng lo^.n xo^.n -du+o+.c . Ngoa.i le^. la` ca'c private addresses -de^?
du`ng no^.i bo^. . La^'y vi' du. home hay office network cu?a Sir co' the^?
du`ng ca'c private addresses na`y trong no^.i bo^., nhu+ng tu+` be^n ngoa`i
do`m vo^ thi` home/office network -do' se~ co' mo^.t -di.a chi? kha'c do ISP
chi? ddi.nh . Cu~ng gio^'ng nhu+ trong 1 building ca'c ca(n co' so^' 1234
la` so^' no^.i bo^., nhu+ng ca'i building pha?i co' ca'i unique street
address thi` thu+ tu+` be^n ngoa`i mo+'i go+?i to+'i -du+o+.c .

Address range tu+` 192.168.0.0 - 192.168.255.0 la` private address cu?a
class C, -du+o+.c du`ng la`m address no^.i bo^. trong 1 home/office network.

Ve^` mask thi` 255.255.255.0 la` thu+o+`ng du`ng (most common) trong network
class C. Ne^'u -do^?i thi` pha?i theo ca'i network design cho+' kho^ng tu+.
tie^.n -du+o+.c, vi` -do^?i ta^`m ba^.y thi` ca'i device -do' se~ tha`nh ra
invisible kho^ng lie^n la.c -du+o+.c vo+'i ca'c device kha'c cu~ng nhu+
vo+'i networks be^n ngoa`i .

news:498a74eb-0bb1-49f7-9712-5e41ea331a46@y32g2000prd.googlegroups.com...

Tui thi` ho*i lu mu nhu*ng cu~ng bie^'t so* sa`i  la` ma^'y ca'i TCP/
IP ddo' la` dynamic address ne^n set no' work
ro^`i la^u la^u no' ddo^?i con so^' cuo^'i vi' du. nhu* 123 tha`nh 124
or 121 ne^'u private network ddo' busy hay
available IP na`o la no' ddo^?i v.v..... cho*' no' kho^ng Auto dynamic
giu`m mi`nh dda^u ngoa.i tru*` co' router na'o no' setup 1 ca'i
port dde^? share ro^`i ga('n ha^`m ba` la(`ng vo^ cho^~ ddo' ddu?
loa.i nhu* printer, USB-HD, USB-SDHC v.v.v.. thi`
OK salem.

Dda.i loa.i setup cu~ng nhu* 1 ca'i Internet webcam va^.y ro^`i ngo^`i
tuo^'t be^n Paris xem hi`nh bedroom o*? Oakland
coai coai co' ai leo vo^ giuo*`ng hong nhu*ng ca^`n 1 software rie^n
control no' stable chu*' kho^ng IP no' cu~Ng ddo^?i  :))))

Ma^'y ca'i IP ai ai no'i cu~ng ngon co*m nhu*ng kho^ng de^~ a(n dda^u
ma` ham

On Wed, 4 Nov 2009 15:13:31 -0500, "jupiterean"

DDu'ng va^.y, nhu*ng IP Address (Gate) dde^? setup ca'i router thi`
thu*o*`ng la` co^' ddi.nh thi' du. nhu* 192.168.1.1...

Co`n ca'i IP Address tha^.t cu?a ha~ng Internet cho mi`nh thi` la`
mo^~i ngu*o*`i kha'ch ha`ng co' rie^ng mo^.c so^'.

On Wed, 4 Nov 2009 12:28:17 -0800 (PST), 3t

Khi mi`nh setup ca'i router thi` dda.i kha'i mi`nh cho ca'i range la`
10 hay 50 ma'y computer cha.y trong home network ddo'.

Ma'y na`o startup windows tru*o*'c thi` ma'y ddo' la^'y con so^' nho?
dda^`u tie^n thi' du. nhu* 192.168.1.2 (sau ca'i ip address
192.168.1.1 cu?a router)...

Cho to*'i khi na`o ma'y ddo' ddu*o*.c ta('t thi` ma'y kha'c co' the^?
se~ taking over ca'i ip address ddo'.

* Co`n xa`i mo^.t ma'y computer directly ga('n vo^ modem thi` la^u
la^u ha~ng Internet cu~ng tu*. ddo^.ng ddo^?i Dynamic IP cho ma'y vi`
va^'n dde^` save bandwidth, etc...co`n commercial IP address thi` ho.
du`ng Static IP Address, mu.c ddi'ch dde^? kha'ch ha`ng kho^ng lo^.n
ddi.a chi?...  :-)))

Tu*o*ng ddo^'i cu~ng de^~ hie^?u thui. Ne^'u nhu* router mi`nh kho^ng
setup pha^`n security thi` la^u la^u vo^ check Status...tha^'y IP na`o
nghi ngo*` ma` xa`i ddu*o*`ng Internet cu?a mi`nh thi` kick no' ra.

:-))))

No'i cho ddu'ng thi` MAC Address chi'nh la` 1 ID rie^ng cho gateway
ro^`i
ca'c IP nho? kha'c la` private cu?a tu*`ng station :)))))))))

Do ddo' MAC address ca^`n pha?i giu*~ ki'n
Co`n no'i chuye^.n ve^` set ddu'ng IP ro^`i ma` no' ho?ng work la` ho?
ng work thi`
co' the^? co' glitch hay bug tu*` FW version na`y vo*'i software
version kia

Ca?m ta. quy' di. dda~ ta^.n ti`nh, mo^~i nguo+`i go'p mo^.t
va`i y' tui ddu'c ke^'t la.i cu~ng hie^?u dduo+.c kha' bo^.n.
Tro+? la.i ca'i printer ma` tui dda(.t cho no' so^' 192.168.1.123
va` subnet mask 255.255.255.0 , cho tui ho?i the^m ma^'y
ca'i na`i cho cha('c a(n:

a) network address la` so^' gi`?
b) IP address la` so^' gi`?
c) gateway la` so^' gi`?
d) host la` so^' gi`? (the printer la` host hay la` client?)

Tui ddo.c va`i ca'i websites dde^? ho.c ho?i ma` tu.i no' xa`i
ma^'y tu+` na`y tu`m lum ta` la, la`m dda^`u o'c lu?ng cu?ng :-)

news:5daa0a62-9838-47b7-89e6-c8a4812f7438@h40g2000prf.googlegroups.com...

IP address co' 2 pha^`n: network address va` host address. Trong ca'i
printer na`y thi`:
192.168.1.0 la` network address
192.168.1.123 la` host address

192.168.1.123 ne^'u no'i ve^` IP address cu?a ca'i printer

kho^ng co' -du? info ve^` gateway address, nhu+ng no' pha?i la` 192.168.1.
xxx trong -do' xxx co' the^? tu+` 1-254, tru+` ra 123 -da~ du`ng cho ca'i
printer (di~ nhie^n pha?i tru+` ra luo^n nhu+~ng so^' -da~ du`ng cho ca'c
device kha'c trong cu`ng ca'i subnet -do')

host la` printer . No'i chung trong networking ngu+o+`i ta du`ng chu+~
host -de^? chi? ca'c end device nhu+ computer, printer, etc. cho+' tui
tha^'y ra^'t i't khi du`ng chu+~ client . In the networking context there
are hosts and switches and routers (sometimes gateways). Clients and servers
are used in the application context.

Gia` ru`i ve^` hu+u ca'i -di, nhu+o+`ng ca'i job -do' cho tui tra? he^'t
mortgage le. le. ca'i -di  :-)))

On Wed, 4 Nov 2009 17:31:48 -0800 (PST), "[2Le]" <sir...@gmail.com>
wrote:

--------------------------------------------------------------------------- -----------------------------------------------------
1. a & b co' le~ y' tu.i no' muo^'n no'i la` ip address va^.y thui.

IP Address = Gio^'ng nhu* ca'i ddi.a chi? cu?a mo^~i ngu*o*`i va^.y
ddo'.

Thi' du.: Omega post ba`i trong SCV, tui coi IP Address ca'i tui co'
the^? ddoa'n ddu*o*.c IP ddo' thuo^.c vu`ng na`o, va^n va^n...

2. Gateway thu*o*`ng la` con so^' dda^`u tie^n dda.i die^.n la` mo^.t
router. -- Cu*?a vo^.

Router #1---->Gateway [192.168.1.1] ---->Trong router na`y nhie^`u khi
tui se~ set dde^? xu*? du.ng cho computers tu*` so^'....

[192.168.1.100]---->[192.168.1.150]

Router#2---->Gateway [192.168.1.2] ----->Trong rounter set cho
computers xa`i tu*` so^' [192.168.1.200]----->[192.168.1.250]

And so forth...

3. Host thu*o*`ng la` chi? ddie^?m ca'i Server cu?a ha~ng Internet
nhu* AOL, Earthlink, SBCGLOBAL.NET, AT&T, etc, etc...

Clients la` mi`nh xu*? du.ng internet cu?a tu.i no' host ne`..

Hmmmmm..... Printer la` client (member cu?a ca'i go.i la` SirLe' Home
Network)

Nhu*ng cu~ng Printer ddo' no' se~ tro*? tha`nh la` Host....ne^'u nhu*
ma^'y computers trong home network cu?a SirLe' muo^'n du`ng no'.

Voila. Gio^'ng nhu* quan ddie^?m ve^` Right Wing hay Left Wing va^.y
thui.  :-))

Cu~ng nhu* dda?ng ba?o thu? o*? U'c thi` la.i he^'t xa^?y la` pho'ng
khoa'ng va^n va^n....????

:-)))))

Cheers !

Mr Pooh kho^ng hie?u ve^` network thi` -du+`ng co' pha'n theo kie^?u kinh
nghie^.m mo`, la`m cho SirLe' bi. confused nhe ho^ng

news:sfc4f5d7b9e9pq1t9i0ng8ik48llem4gv6@4ax.com...

On Wed, 4 Nov 2009 21:11:42 -0500, "jupiterean"

--------------------------------------------------------------------------- ------------------------------------------------------
Heck, tui kho^ng pha/i la` da^n IT nhu*ng network nha` tui cha.y vu`
vu` ddo' thui.

On Wed, 4 Nov 2009 17:31:48 -0800 (PST), "[2Le]" <sir...@gmail.com>
wrote:

--------------------------------------------------------------------------- ---------------------------------------
http://windowsitpro.com/Files/16/39743/natdiagram.gif

http://windowsitpro.com/article/articleid/39743/whats-network-address...

Okie, JoJ no' kho^ng chi.u lo^'i tui gia?i thi'ch dza^.y thi` SirLe'
vo^ dda^y coi NAT la` gi` nhe. -- Co' lie^n he^. vo*'i network address
va^.y thui.

:-)))))

http://en.wikipedia.org/wiki/IP_address

news:l8d4f5dvb1cgis89je66kcumaoou8p91hi@4ax.com...

nhu+~ng con so^' mr pooh -du+a ra -de^`u -du'ng (ne^n network
cha.y -du+o+.c) nhu+ng mr pooh kho^ng gia?i thi'ch -du+o+.c systematically

sergeant ma` da'm ca~i colonel, thie^.t la` loa.n qua'  :-))))

On Nov 5, 10:05 am, "jupiterean" <jupiter...@heaven.net> wrote:

Tui ve^` hu+u ngay gio+` dde^? ma` ddo'i nha(n ra(ng ho+?,
ra'ng cho+` va`i na(m tui mo+'i nhuo+`ng dduo+.c nghen :-)

Okay da^.y host address cha(?ng qua la` host's IP address
vie^'t go.n la.i. Co`n gateway co' necessarily la` first one
cu?a the network's address range hong, thi' du. network la`
192.168.1.0 thi` gateway a('t pha?i la` 192.168.1.1 ??

news:647132fb-fccc-4794-8b87-232cbcb96d15@x25g2000prf.googlegroups.com...

Okay da^.y host address cha(?ng qua la` host's IP address
vie^'t go.n la.i. Co`n gateway co' necessarily la` first one
cu?a the network's address range hong, thi' du. network la`
192.168.1.0 thi` gateway a('t pha?i la` 192.168.1.1 ??
------------------------------

Not necesarily . -Do' chi? la` qui u+o+'c cho de^~ nho+'. Addr cu?a gateway
co' the^? la` ba^'t cu+' addr na`o na(`m trong ca'i subnet -do', vi' du. no'
co' the^? la` 192.168.1.100 mie^~n la` kho^ng bi. tru`ng vo+'i addr cu?a
device kha'c. By the way gateway thu+o+`ng la` router co' nhie^.m vu. no^'i
ca'i subnet -do' vo+'i nhu+~ng subnet hay network kha'c.

On Wed, 4 Nov 2009 18:29:51 -0800 (PST), "[2Le]" <sir...@gmail.com>
wrote:

--------------------------------------------------------------------------- ------------------------
Okie ba^y gio*` mi`nh ddi tu*`ng pha^`n mo^.c nhen.  ;-))

Gateway kho^ng the^? na`o la` 192.168.1.0 ddu*o*.c

(Cho so^' na`y thi` router lo.t ho^' pha?i reset la.i ddo' nghen)

Thi' du. kha'c nu*~a:

Ne^'u Gateway (HOST) cu?a mi`nh tu*. cho.n la` [192.168.1.2] thi`
ta^'t ca? nhu*~ng computers trong home network cu?a mi`nh se~ ba('t
dda^`u ke^' tie^'p ba(`ng ca'c IP Address (**** IP gia? tu*o*?ng trong
Router****) sau con so^' 192.168.1.2.

Thu*o*`ng thi` ho. set dde^? skip 50-100 con so^' va` xa`i so^' ke^'
tie^'p nhu* 192.168.1.200, 201, 202, etc, etc...

:-)))

Anyway, vo*'i la.i pha^`n nhie^`u la` dde^? auto, dde^? tu*. router
no' ddi.nh ddoa.t.

;-)))

(Gia?i thi'ch va^.y ddo'. JoJ co' y' kie^'n gi` hong ne` ?)

http://kb.iu.edu/data/ajfx.html

What is the default gateway, and how can I find out what mine is?

In general, a gateway is a device on a network that acts as an
entrance to another network. In more technical terms, a gateway is a
routing device that knows how to pass traffic between different
subnets and networks.

On Nov 5, 10:33 am, "jupiterean" <jupiter...@heaven.net> wrote:

Ne^'u ma` tui cai tri. ca'i dda'm network terminology tui se~
ca^'m xa`i chu+~ host. Xa`i me. no' chu+~ device address ddi
co' pha?i de^~ hie^?u thu+.c tie^~n ho+n hong.

At the addressing level, gateway xa`i 1 so^' trong range y nhu+
ca'c (non-gateway) devices kia, nhu+ng kha'c o+? cho^~ no'
la` the only one in the range no^'i vo+'i the^' gio+'i be^n ngoa`i
pha?i hong? The^' gio+'i be^n ngoa`i co' ca^`n bie^'t trong range
ddo' tha(`ng na`o la` gateway kho^ng, hay chi? ca^`n bie^'t
network address only ho^?ng care tha(`ng na`o la` gateway?

On Wed, 4 Nov 2009 21:33:40 -0500, "jupiterean"

--------------------------------------------------------------------------- ----------------------------------------------------------
Yeah, I see.

You gia?i thi'ch theo kie^?u nhie^`u router no^'i, lie^n la.c vo*'i
nhau pha?i hong ne` ?

:-))))

SirLe' khi na`o ra?nh vo^ site http://www.dd-wrt.com/site/index

la`m hack ma^'y ca'i router cu~ cu?a mi`nh ro^`i wireless tu.i no'
tha`nh mo^.t home network co' range ro^.ng lo*'n nhen.

Tui co' thu*? hack ca'i router linksys wrt-54gs cu~ cu?a tui ro^`i
ddo'. Cha.y to^'t la('m.

No'i chung ca'c loa.i consumer grade routers thi` co' the^? (bi. tui kho^ng
xa`i) no' -da~ setup sa(~n sao cho tie^.n cho ngu+o+`i xa`i kho^ng ra`nh
ve^` network .

Nhu+ -da~ no'i, ve^` nguye^n ta('c trong network cu?a sir Le' gateway hay
ba^'t ky` device na`o kha'c -de^`u co' the^? du`ng ba^'t ky` addr na`o trong
khoa?ng 192.168.1.1 - 192.168.1.254, mie^~n la` -du+`ng co' tru`ng nhau.

192.168.1.0 kho^ng du`ng -du+o+.c vi` -do' la` addr cu?a ca'i subnet -do',
kho^ng du`ng la`m host addr -du+o+.c

192.168.1.255 kho^ng du`ng -du+o+.c vi` no' la` broadcast addr cho
subnet -do' (nghi~a la` data packet na`o ma` mang addr -do' thi`
se~ -du+o+.c go+?i he^'t cho ta^'t ca? ca'c device trong subnet -do')

so^' addr co`n la.i la` fair game.

vie^.c pha^n chia addr trong mo^.t subnet thi` co' 2 ca'ch: static va`
dynamic. Static la` mi`nh cho ca'i device mo^.t fixed ip addr. Dynamic thi`
no' du`ng 1 protocol (DHCP) -de^? ca'i router tu+. -do^.ng pha^n chia ip
addr cho ca'c device tu+` 1 pool nha^'t -di.nh. No'i chung ca'ch
dynamic -du+o+.c du`ng nhie^`u ho+n, va` ca'c consumer grade routers thi`
xa`i thu+' na`y -de^? ngu+o+`i du`ng kho?i ma^'t co^ng tu+. configure ca'i
addr cho tu+`ng device trong network cu?a mi`nh.

news:cne4f51u3it405ar4lfnlldmq45ekmol0j@4ax.com...

On Wed, 4 Nov 2009 19:00:25 -0800 (PST), "[2Le]" <sir...@gmail.com>
wrote:

DDu'ng nhu* va^.y . Gateway la` #1, cu?a let say, our home network.

Network address tu*` ha~ng Internet no' vo^ modem hay cable cu?a mi`nh
kho^ng care va` cu~ng kho^ng bie^'t luo^n tha(`ng na`o la` gateway.

Mi`nh ga('ng ca'i cable vo^ Router ro^`i tu*` ddo' set up thui.

Coi pha^`n Status trong Router cu?a tui thi` ca'i IP Address thie^.t
cu?a ha~ng AT& no' cho la` nhu* dza^`y ne`...

[71.156.55.72]

Co`n ma'y computer cu?a tui thi` hook up wireless vo^ Router ne^n ip
address la` 192.168.1.Veeveo.69.

:-))))

Next Question Please !  :-)

news:1127e5be-8bab-4e44-802e-f327624ae17d@b36g2000prf.googlegroups.com...

At the addressing level, gateway xa`i 1 so^' trong range y nhu+
ca'c (non-gateway) devices kia, nhu+ng kha'c o+? cho^~ no'
la` the only one in the range no^'i vo+'i the^' gio+'i be^n ngoa`i
pha?i hong? The^' gio+'i be^n ngoa`i co' ca^`n bie^'t trong range
ddo' tha(`ng na`o la` gateway kho^ng, hay chi? ca^`n bie^'t
network address only ho^?ng care tha(`ng na`o la` gateway?
----------------------------------------------------------------

O+? -da^y tui chi? no'i ve^` tru+o+`ng ho+.p cu?a sirLe' -du+a ra (du`ng
private addresses) tho^i nhe .

Trong tru+o+`ng ho+.p na`y the^' gio+'i be^n ngoa`i chi? bie^'t ca'i gateway
tho^i cho+' kho^ng care ca'i -da'm nu'p -da(`ng sau . Ca'c device kha'c
go+?i data ra ngoa`i thi` pha?i qua ca'i gateway -do' . Data tu+` ngoa`i
go+?i vo^ thi` cu~ng qua ca'i gateway -do' .

Tu+. nhie^n ca^u ho?i tie^'p se~ la`: chi? co' 1 ca'i addr cu?a gateway thi`
la`m sao o+? ngoa`i go+?i data vo^ cho tru'ng ca'i computer be^n trong, vi`
ca? -da'm be^n trong share chi? 1 ca'i addr cu?a ca'i gateway ? Tra? lo+`i:
ngu+o+`i ta du`ng kha'i nie^.m port number .

Ca'i ca'ch thu+'c -de^? chuye^?n -do^?i giu+~a private addr va` public addr
(tu+'c ca'i addr cu?a gateway) ke^u la` NAT (network addr translation)

Gio+` tui le^n giu+o+`ng -do.c truye^.n -da^y nhe  :-))))

On Wed, 4 Nov 2009 22:18:35 -0500, "jupiterean"

--------------------------------------------------------------------------- ---------------------------------------------------
Terminology thui.

Hai tha(`ng na`y dde^`u la` IP Address ca?.

DDu'ng hong ???

:-))

Good lite !

news:hctg62$98f$1@aioe.org...

-do.c la.i ca^u ho?i cu?a sirLe' thi` tha^'y Sir chu+a hie^?u cho^~ na`y:

ca'i gateway -du+'ng giu+~a public network va` private netowrk, cho ne^n no'
co' i't nhu+'t la` 2 interface, va` mo^~i interface mang 1 IP addr kha'c
nhau.

ca'i interface xa^y ra public network se~ co' 1 public IP addr. Mo.i giao
di.ch vo+'i be^n ngoa`i se~ qua ca'i interface na`y.

ca'i interface xa^y vo^ private network se~ co' 1 private IP addr -de^? giao
di.ch be^n trong (192.168.1.1 cha(?ng ha.n)

Do -do' be^n ngoa`i chi? bie^'t to+'i ca'i gateway qua ca'i public addr cu?a
no' (71.156.55.72 trong vi' du. cu?a mr pooh)