NetWork traffic

[Pavlos Parissis]

Geia sas,
Tis teleftaies meres prospathw na vrw ena kalo software gia network traffic monitor alla den vriskw.

Thelw na exw me ena tropo ta posa Kbytes/Sec kathe host pisw apo ton gateway travai apo ton internet
kai dioxnei se afto.
Me liga logia thelw na kserw an sec posa kbytes apo to sinoliko mou bandwidth mesw ths 64ISDN line
pu exw katanalwnei o kathe host.
Dokimasa ta:
mrtg
netsaint
ntop
statnet
kai mono to ntop edeixne kati,nai men kbytes/sec alla kai se afta simperhlamvane kai thn kinish sto
local network.
To mono pou mporousa na kserw htan ana protokollo posa sinolika kbytes exei katevasei 'h exei sthlei
meso tou protokolou aftu.
Prospathisa na tou dwsw na vlepei mono kiniseis apo to local net sto internet kai ntoumpalin mesw to
filtrou
src net 192.168.0.0/24 and dst net ! 192.168.0.0/24 
dst net 192.168.0.0/24 and src  net!  192.168.0.0/24
all tipota afto sinexise na mou deixnei gia to netbios-ip protocol pososta.
Meta tou eipa na kanei monitor mono ta protokola ftp,pop-3,smtp kai http nai men sta grafimata den
elvepa pleon trafic gia to netbios-ip alla stous hosts mou edeinxe gia paradeigma se ena host pou
den etrexe o IE kai den eixe kamia kinisi paketwn me
to internet alla etrexe mono h access database  pou einai ston gateway pou trexei  kai samba na exei
send kai receive ena karw kbytes.
Afto to tsekara kai me to tcpdump pu gia ton sigkekrimeno host evlepa paketa na phgaino erxontai
mono metaksi aftou kai tou samba server.

Exei kanenas dokimash na kanei afto pou thelw?

O apoteros skopos aftou pou thelw na kanw einai na thesw oria sth xrhsh tou bandwidth ana xrhsth.
Na pw gia paradeigma aftos o host den tha katevazei panw apo 3 Kbytes/sec.
Afto akoma na vrw pws ginete alla prwta prepei na kserw pio host kanei thn megalytery xrhsh tou
bandwidth kai meta na thesw oria.
Apo mia matia pou eriksa sta HOWTO den drika kati , mipws iparxei kati allo 'h aplos apo tis polles
ores sto pc kalokairiatika
stravothika:)

Opoia idea einai kalodexoumenh.

FIlika,
Pavlos

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I love having the feeling of being in control
while i have the sensation of speed

The surfer of life
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