Salut,
Computerul respectiv nu face nimic altceva decat routare.
Ce am mai remarcat: primul ping pe care-l dau e ok, raspunde asa cum
trebuie.
Apoi fac un lynx google.com, se conecteaza ok, iata ce vad pe router:
tcpdump: listening on eth1
22:37:54.759861 10.0.2.254.32772 > kiwi.iasi.rdsnet.ro.domain: 15679+ AAAA?
www
.google.ro. (31) (DF)
22:37:55.921216 216.239.59.104.http > 10.0.2.254.32774: . ack 3577784975 win
314
60
22:37:55.921441 216.239.59.104.http > 10.0.2.254.32774: . ack 1 win 31460
22:37:55.921632 216.239.59.104.http > 10.0.2.254.32774: . ack 1 win 31460
22:37:55.921567 10.0.2.254.32774 > 216.239.59.104.http: R
3577784975:3577784975(
0) win 0 (DF)
22:37:55.921743 10.0.2.254.32774 > 216.239.59.104.http: R
3577784975:3577784975(
0) win 0 (DF)
22:37:55.921857 216.239.59.104.http > 10.0.2.254.32774: . ack 1 win 31460
22:37:55.921980 10.0.2.254.32774 > 216.239.59.104.http: R
3577784975:3577784975(
0) win 0 (DF)
10.0.2.254 este ip-ul pe care fac NAT-ul respectiv.
Ok. Repet putin procedura astfel:
Pe computerul cu 10.0.2.254 dau:
[EMAIL PROTECTED] root]# host 82.77.16.65
In timpul asta ma uit pe router sa vad ce se intampla si vad:
tcpdump: listening on eth1
22:51:45.339274 10.0.2.254.32785 > kiwi.iasi.rdsnet.ro.domain: 30674+ PTR?
65.16.77.82.in-addr.arpa. (42) (DF)
22:51:46.346582 10.0.2.254.32786 > mango.iasi.rdsnet.ro.domain: 30674+ PTR?
65.16.77.82.in-addr.arpa. (42) (DF)
22:51:51.355826 10.0.2.254.32785 > kiwi.iasi.rdsnet.ro.domain: 30674+ PTR?
65.16.77.82.in-addr.arpa. (42) (DF)
22:51:52.365364 10.0.2.254.32786 > mango.iasi.rdsnet.ro.domain: 30674+ PTR?
65.16.77.82.in-addr.arpa. (42) (DF)
dupa care-mi vine si raspunsul pe 10.0.2.254:
[EMAIL PROTECTED] root]# host 82.77.16.65
;; connection timed out; no servers could be reached
[EMAIL PROTECTED] root]#
Destul de frumos nu ? :)
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