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September 26th, 2004, 02:51 PM
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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September 25th, 2004, 01:29 PM
'
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...
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September 25th, 2004, 07:07 AM
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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September 25th, 2004, 05:36 AM
- 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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September 22nd, 2004, 06:16 AM
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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September 21st, 2004, 09:07 PM
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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September 21st, 2004, 08:37 PM
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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August 2nd, 2004, 11:55 PM
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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August 2nd, 2004, 01:12 PM
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 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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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. 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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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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December 30th, 2003, 08:43 AM
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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December 30th, 2003, 06:01 AM
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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December 25th, 2003, 03:36 AM
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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December 23rd, 2003, 09:52 PM
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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December 23rd, 2003, 03:56 PM
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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December 23rd, 2003, 02:35 PM
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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December 23rd, 2003, 10:02 AM
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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December 21st, 2003, 07:43 AM
WOOOHOOO!!! Thanx a lot !
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December 20th, 2003, 07:53 PM
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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December 20th, 2003, 01:53 PM
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...
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October 25th, 2003, 08:32 PM
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...
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October 25th, 2003, 07:56 PM
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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