NASLite Network Attached Storage

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 Post subject: NIC Promiscuous Mode
PostPosted: Sat Dec 30, 2006 3:38 pm 
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Joined: Tue Sep 19, 2006 1:24 pm
Posts: 24
Hello,

Have been running a check for NICs on my network that are set to promiscuous mode (looking for possible packet sniffing evil-doers) and notice that the NIC on my NASLite+ box is set to promiscuous. Before I go and change that setting, does NASLite+ need to have the NIC on its box set promiscuous? If so, why, please?

Thanks very much,

Bill Cole


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 Post subject:
PostPosted: Sat Dec 30, 2006 6:02 pm 
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Joined: Tue Jul 13, 2004 4:01 pm
Posts: 800
Location: ServerElements
Very easy answer, it doesn't run in promiscous mode.

In order for the card to be set promiscous we would have to ifconfig the ethernet card with "ifconfig promisc" etc, check your ifconfig information on your status screen and you will see the card is not set to that.

Here's what you'll see with NASLite :

eth0 Link encap:Ethernet HWaddr 00:0F:1F:69:AA:E4
inet addr:xx.xxx.xxx.xx Bcast:xx.xx.xx.xx Mask: 255.255.255.224
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6323 errors:0 dropped:0 overruns:0 frame:0
TX packets:284 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:440500 (430.1 KiB) TX bytes:113736 (111.0 KiB)
Interrupt:7


After setting the card to promiscous mode :

# ifconfig eth0 promisc
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0F:1F:69:AA:E4
inet addr:xx.xxx.xxx.xx Bcast:xx.xxx.xxx.xx Mask:255.255.255.224
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:6389 errors:0 dropped:0 overruns:0 frame:0
TX packets:318 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:445141 (434.7 KiB) TX bytes:116988 (114.2 KiB)
Interrupt:7


Thanks.


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