> Opravdu nikdo nevite co presne znamena to TTL u pingu.
> V domaci siti to ma kazda sitovka jiny (128, 64, na 386
> dokonce jen 32). Diky za info,
> Emur
TTL = Time To Live. Ted koukam, ze Windows to prekladaji
jako "doba zivota". Je to maximalni pocet skoku, tedy pocet
stroju pres ktery ten tvuj paket muze jit. Kdyz mas TTL 32 a
cil je az za 33. strojem (routerem), tak se ti nevrati a stroj pro
tebe jakoby nebezi i kdyz ve skutecnosti bezi.
Zde je neco z "man ping":
The TTL value of an IP packet represents the maximum number
of IP routers that the packet can go through before being thrown
away. In current practice you can expect each router in the
Internet to decrement the TTL field by exactly one.
Ve Windows muzes TTL pri pingu zmenit parametrem "-i", v
Linuxu tenhle parametr znamena pro prodlevu mezi pakety, jak
zmenit TTL jsem nenasel, podle nasledujici vety se to zrejme
nenastavuje jako parametr prikazu ale jako soucast konfigurace
systemu:
The TCP/IP specification states that the TTL field for TCP packets
should be set to 60, but many systems use smaller values (4.3 BSD
uses 30, 4.2 used 15).
Vice viz "man ping".
Zdar KAB
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