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  1. Replies
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    Ah.. stoopid

    Okay, there's 3Com Network Inspector running on one of the machines in the 196.1.67.0 Network, that every 12 hours discovers/updates the entire network diagram. For the 172.16.0.0/16 Net, it pings...
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    ' Amen. And the number of actuals hosts on...

    '

    Amen.

    And the number of actuals hosts on that is less than 400.. yup, 400 out of 65,534. Of course, there's also the other security issue of using routable, non-private addresses such as...
  3. I've setup MRTG on a W2k box, and it was pretty...

    I've setup MRTG on a W2k box, and it was pretty straightforward, except for the lack of RRDTool [for database] support as provided in Linux. Don't think it'd be any different in WinXP. However,...
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    - back - Sorry, I couldn't get back to this...

    - back -

    Sorry, I couldn't get back to this thread earlier. Needed to give some attention to my academics over the end of the week.

    Regarding the router flooding, its not doing that regularly,...
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    Only have RIPv1 running on the router. Regarding...

    Only have RIPv1 running on the router. Regarding updating its arp tables, it wouldn't go about polling every ip on that net for an arp response would it? I would've thought building the Mac/port...
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    Well, I used Ethereal to capture traffic, and the...

    Well, I used Ethereal to capture traffic, and the router was broadcasting ARP requests incrementally for the entire Network like

    Who has 172.16.131.1 tell 172.16.0.253
    Who has 172.16.131.2 tell...
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    Router and ARP flooding

    Hi Folks,
    I have a Cisco Cat3550 router, and 5 subnets, one of which is a rather large 172.16.0.0/16 subnet. Of late, I've seen this backbone router sending out ARP floods on this 65,000+ hosts...
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    hiya Thread/cacosapo I think you might be...

    hiya Thread/cacosapo

    I think you might be right about that Thread_killer. Anyways, so I telnetted to the switch, and removed all ports.. yes, all ports from VLAN 1. *Poof*, connection gone. Can't...
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    Dabbling with Vlans - ports Vs. subnet

    hello folks,

    My question is about .. obviously.. vlans.

    I have a 3Com 3300 Switch with Vlan support. I added the first 6 ports to one vlan [ID:190], the other 6 to another vlan[ID:191]. Didn't...
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    Hey TS, Yup, all the clients are masked with...

    Hey TS,

    Yup, all the clients are masked with 255.255.0.0. And its all just one happy 65,000+ possible IPs subnet, with around 700 IPs actually in use. As for the third question, yup, we do use...
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    Preventing Sasser's ARP broadcast storm

    Hi folks,
    Regarding the network congestion due to the sassers worm, I've a question:

    Sasser spreads by scanning for machines in its own network, rite? This causes ARP broadcast storms,...
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    Sorry, I hadn't seen this thread earlier....

    Sorry, I hadn't seen this thread earlier. Wouldn't have started a somewhat similar thread

    Another question regarding the sasser worm. It generates a good amount of network traffice by trying to...
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    The Sasser Worm & Symantec's FxSasser.exe..

    Hello Folks,

    Regarding the Sassers worm, many of the machines on the college network were hit, and kept crashing/rebooting with the Error Msg along the lines of ... has exprienced errors with the...
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    Answering me own query earlier: Assigning more...

    Answering me own query earlier:

    Assigning more than one IP address to a single interface such as eth0 on linux can be done as follows:

    > ifconfig eth0:1 192.168.x.1 up
    > ifconfig eth0:2 ...
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    Apologies for not getting back to this thread...

    Apologies for not getting back to this thread earlier. The Saturday earthquake had knocked out some of the uplink lines. Thanks a lot for your responses everyone, am very grateful.

    But regarding...
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    Sorry I couldn't get back to this thread earlier....

    Sorry I couldn't get back to this thread earlier. The end of the week can be wicked. [Thursday and Friday are the weekend here].

    Thanx for the marvellous info Maestro, Ammo and Fyremouse. In a bid...
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    Okay, given that this topic is shifting from...

    Okay, given that this topic is shifting from network management (IP mngmnt) to security [no surprises there given the nature of the site ;) ], I think cgkanchi and ammo did really open a can of...
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    The number of nodes doesn't exceed a thousand and...

    The number of nodes doesn't exceed a thousand and the routers a Layer 3 Cisco Cat 3550 switch, [which I believe is a pretty good workhorse], so I definitly gonna look more into this ACL scenario....
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    Hi Sonic - I think you misunderstood me a bit....

    Hi Sonic - I think you misunderstood me a bit. The present DHCP setup we have is exactly what u suggested. The server has a record of all legal MAC addresses and corresponding IPs, and any outsider...
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    Preventing arbitrary IP address allocation.. HOW!?

    Newbie Question time:

    In my college, we run a DHCP server which maps users MAC addresses to IPs - in other words, the whole setup keeps allocated IPs static - the machine always gets the same IP,...
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    WOOOHOOO!!! Thanx a lot !

    WOOOHOOO!!! Thanx a lot !
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    Thanx a lot rcgreen, the post was just the thing...

    Thanx a lot rcgreen, the post was just the thing I needed...worked just fine! Now, another question.. how did you find that post? Had read it earlier someplace, or googled for it? I'd tried googling...
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    Using minicom to connect over Serial Port

    Hello folks,
    I wanted to use minicom for terminal emulation to connect to a switch over the console port..., the same way I'd do it using hyperterminal under Windows. However, I can't get it to...
  24. Thread: blackcode.com

    by Scimitar
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    Awwww.... F###

    www.netcraft.com is a nifty thing to know whats a site's servers are upto...
    http://uptime.netcraft.com/up/graph/?host=www.blackcode.com

    Ok, what exactly is blackcode about? Its blocked by the...
  25. Weird Network Connectivity Problem on W2k

    One of the graduate students relocated his computer from one lab to another over this weekend and came across a new (new to me at least.. ) connectivity problem. The connection is enabled, but can't...
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