On Wed, Nov 17, 2004 at 06:47:51AM +0900, Le Thanh Phong wrote:
The^m 1 die^`u la. trong LAN nu+~a, tre^n ly' thuye^'t em du+o+.c ho.c
thi` ca'c router cu~ng nhu+ ca'c PC mie^~n la` co' card ma.ng. Khi 1
packet to+'i mi`nh, eth card se~ kie^?m tra di.a chi? di'ch de^'n cu?a
packet thi` se~
Subnet cu?a ma'y trong LAN de^`u la` 255.255.240.0 co`n proxy server la` 1
host tre^n Internet co' IP la` 193.167.144.30 ... Ca'c ma'y de^`u co'
chung 1 gateway la` 10.2.0.1 ... (hi`nh nhu+ la` 1 switch)
Traceroute thu+? nhu+ng no' chi? ba'o la` host unreachable, co' ve? nhu+
la` ne^'u de^'n
Sao ko gia su la` ca'c ma'y trong LAN ko co' rule do'? Thu te
thi` chuc nang ipforward default la` OFF. Trong truong hop ca'c ma'y
trong LAN co' ca'i rule ky` qua'i a^'y, nghi~a la` cu+' nha^.n
ddu+o+.c go'i co' di'ch la` 0.0.0.0 thi` send dde^'n gateway thi`
gateway sau khi nhan duoc qua'i
Ba^y gio+` thi` em hie^?u nguye^n nha^n ro^`i vi` ca'i IP cu?a em bi.
banned do da~ send file ra ngoa`i lo+'n ho+n 300MB va` de^'n cu'i tua^`n
se~ co' Internet la.i ... The^' nhu+ng bi gio+` em cu~ng da~ co' Internet
ro^`i la` vi` em do^?i ca'i IP address ro^`i do^?i luo^n ca'i MAC Address
cho
On 2:10:46 pm 11/16/04 Le Thanh Phong [EMAIL PROTECTED] wrote:
Cha`o ca'c ba'c,
Ma'y cu?a em la` na(`m trong LAN va` su+? du.ng Internet tho^ng qua
proxy server. Cha(?ng bi't vi` le~ na`o ma` ca'c ma'y o+? ca'c pho`ng
kha'c de^`u co' the^? ping du+o+.c ca'i proxy server de^? va`o
Internet,
Huhu nhu+ng ma` em co' pha.m to^.i gi` da^u ma` admin la.i la`m the^'
chu+' ...huhuhu :(( ... nhu+ng muh no'i ve^` chuye^.n die^`u chi?nh route
thi` hi`nh nhu+ la impossible. Khi du`ng le^.nh add route nhu+ sau:
# route add -net 0.0.0.0 netmask 0.0.0.0 gw 0.0.0.0
thi Linux la.i ba'o la` invalid,
The^m 1 die^`u la. trong LAN nu+~a, tre^n ly' thuye^'t em du+o+.c ho.c
thi` ca'c router cu~ng nhu+ ca'c PC mie^~n la` co' card ma.ng. Khi 1
packet to+'i mi`nh, eth card se~ kie^?m tra di.a chi? di'ch de^'n cu?a
packet thi` se~ forward no' du+.a theo routing table. Gia? su+? ca'c ma'y
trong LAN
On 3:18:55 pm 11/16/04 Le Thanh Phong [EMAIL PROTECTED] wrote:
Huhu nhu+ng ma` em co' pha.m to^.i gi` da^u ma` admin la.i la`m the^'
chu+' ...huhuhu :(( ... nhu+ng muh no'i ve^` chuye^.n die^`u chi?nh
route thi` hi`nh nhu+ la impossible. Khi du`ng le^.nh add route nhu+
sau:
# route add -net
traceroute thu+? coi bi. la.c ddi dda^u.
ti`m cai problem ta.i sao khong dde^'n dduoc ma'y proxy coi bo^.
interesting ho+n la` ddi ngo~ ta('t qua ma'y cu?a ba.n :)
foobar ddoa'n la` ma'y cua Phong cu`ng subnet cu?a ma'y ma^'y nguoi ba.n.
foobar ddoa'n la` ma'y proxy khong cu`ng subnet cua Phong
