can't see hosts 'outside' my switch

firewalkswme · 01-22-2009, 04:01 AM

hi!
i'm connected to LAN and, wierd thing, see only hosts 'inside' my switch, i.e. connected directly to switch ports.
run nmap -vsS 10.0.2.0/23 and from 512 hosts i can see only 3.
(which is why i've got no internet - i can't see gateway 10.0.2.1)

what is that? pls help.

thanks in a advance.

acid_kewpie · 01-22-2009, 04:20 AM

No idea without knowing the rest of your network. Could have a layer 2 firewall, could have 802.1x blocking you...

firewalkswme · 01-22-2009, 04:30 AM

well, funny thing, it came from nowhere, right in the middle of file download

in syslog i got - via.rhine.interrupt line
any ideas?

firewalkswme · 01-22-2009, 04:37 AM

i was playing aroung with network cards, asked the sysadmin to turn off MAC auth for my ip.
and like two weeks later i got this problem.

acid_kewpie · 01-22-2009, 04:56 AM

Mac Auth? Is that 802.1x then? stick port security? no idea... sounds like something expired, and I'd assume your sysadmin would know in a flash.