periergo provlhma me telnet

Peter Pissias petrance at di.uoa.gr
Fri Mar 15 13:22:01 EET 2002


>
> Koita ti leei to route table prin kai meta tin syndesi,
> ti lene oi kanones tou firewall, isws kai to netstat -a.
>

To routing table den allazei , telika ginetai to exhs
periergo :

To connection 66:1058 einai established prin to dialup
To connection 66:1082 einai amesws meta to dialup

O client sto connection 66:1082 einai tou lan kai
perimenei - perimenei - perimenei .... Telika to afisa
na perimenei 2-3 lepta kai emfanistike to "login :"

root at plutonas:/home/petrance# netstat -an | grep 23
tcp        0      0 0.0.0.0:23              0.0.0.0:*               LISTEN
tcp        0      2 192.168.0.1:23          192.168.0.66:1058
ESTABLISHED
tcp        3      0 192.168.0.1:23          192.168.0.66:1082
ESTABLISHED

Amesws meta thn emfanish tou "login :"

root at plutonas:/home/petrance# netstat -an | grep 23
tcp        0      0 0.0.0.0:23              0.0.0.0:*               LISTEN
tcp        0      2 192.168.0.1:23          192.168.0.66:1058
ESTABLISHED
tcp        0      0 192.168.0.1:23          192.168.0.66:1082
ESTABLISHED

H monh diafora einai oti to '3' ths 2hs sthlhs (Recv-Q) egine '0' .....

(   Recv-Q  == The count of bytes not copied by the user program connected
to this socket. )

H kathisterhsh afth (toulasixton 60-70 sec) yparxei mono se connections tou
lan
kai mono otan exw kanei dialup....

Ps: Otan h prwth kinhsh meta to dialup einai telnet (kai den exw kanena
connection
sto port 23 apo prin, kai den exw kanei kanena fwd request ) den yparxei
afth h kathisterhsh.

Ypopta pragmata...:-)

Exei apopsh kanas networking guru epi tou thematos ?

Petros Pissias





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