Re: ADSL e iptables (2x eth)

[LoSpippolo <lospippolo@email.it>]

> 
> L'ultima cosa che vi chiedo, giusto per imparare la teoria: la
> connessione ppp mi assegna un ip con netmask 255.255.255.255, mentre
> le macchine interne hanno come netmask 255.255.255.0 e ip di classe
> 192.168.0.x
> 
> Ci sono problemi?
> 

no, e' cosi che dev'essere

per completezza ti posto l'ifconfig del mio proxy aziendale che usa una
adsl su pppoe di infostrada


blackbox:/# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:10:A7:1A:9B:D2
          inet addr:192.168.22.19  Bcast:192.168.22.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4267360 errors:36851 dropped:0 overruns:0 frame:0
          TX packets:5736291 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:635914401 (606.4 MiB)  TX bytes:987221614 (941.4 MiB)
          Interrupt:10 Base address:0xd000

eth1      Link encap:Ethernet  HWaddr 00:0E:A6:0D:BD:F4
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5294996 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5368184 errors:0 dropped:0 overruns:0 carrier:0
          collisions:6961 txqueuelen:1000
          RX bytes:835170556 (796.4 MiB)  TX bytes:787487684 (751.0 MiB)
          Interrupt:15 Memory:dc000000-dc001080

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1092 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1092 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:65520 (63.9 KiB)  TX bytes:65520 (63.9 KiB)

ppp0      Link encap:Point-to-Point Protocol
          inet addr:151.41.XX.XX  P-t-P:151.6.XX.XX Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:1002239 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1015298 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:961668532 (917.1 MiB)  TX bytes:122186608 (116.5 MiB)

e la tabella di routing 

blackbox:/# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
151.6.XX.XX    0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
192.168.22.0    0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         151.6.XX.XX    0.0.0.0         UG    0      0        0 ppp0

per la cronaca e' una debian woody. :-)

LoSpippolo

Murphy era un ottimista.