Ubuntu :: How To Avoid Flood When Using Gparted

May 15, 2010

specs: toshiba lappy
110gb hdd, 1gb ram, core 2 duo 1.6ghz, nvidia 7600
windows xp pro service pack 3
jaunty jackalope

my problem is: i wanted to repartition (shrink xp and create partition for data storage) my hdd using gparted live cd 0.5.2-9. everything went fine until i clicked exit and reboot. after the cd tray automatically ejected i got a flood of "VFS: busy inodes on changed media or resized disk srO". this doesnt stop until i press enter. after that it reboots normally and there is no problem with the os.

my questions: 1) is that flood anything bad, is there a way to avoid this. i read somewhere that the problem is solved when using the terminal sudo eject - then push back the cd tray - then sudo eject -t. i tried that but it said failed because gparted cd is in use.

2) the first time that happened i didnt know what to do, so it flooded like for 15min or more until i pressed enter. my question is if the flood is being saved anywhere on the pc so that i have to delete it?

and a question regarding extended partition: 3) i have 50gb left that i want to use for data storage. i read that you can only have one extended partition. so since there is already one extended partition from ubuntu, i cant have another one for windows? so i can only make the data partition as primary or is there another reason why the "create extended partition" is greyed out?

last question: 4) when i set up the partition for swap i made it 1032gb big but in gparted it shows 980.53mb. is that still enough or why is it like that because somehow the sizes of the partitions seem a bit different than how they originally should be. im actually used in seeing the size shrinking a bit but i found it weird that the ubuntu partition shows 4.76 when it should be 4.5gb. i know its not much different but im just curious to know why..

partitions order: windows - unallocated (-->data partition) - ubuntu (primary) - home folder (extended) - swap

in windows the partitions are shown as: windows xp (31,74gb) - unallocated (50,05gb) - 4,76gb unkown - 24,27gb unkown - 981mb uknown

in gparted: its almost the same, only difference: there is unallocated space (7 or 8mb) between home folder and swap

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Ubuntu Networking :: Generate Syn Flood Attack In Pc?

Aug 3, 2011

I want to test syn flood attack in my pc

but i dnt know how to generate it, can you tell me

how to generate syn flood attack in pc

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General :: Partition Gparted Fdisk / When Reduced The Size Of Some Linux Partitions Using Gparted?

Sep 18, 2009

I have 3 Ubuntu installations & a PCLINUXOS, plus Windows XP installed on one hard disk. I still can boot to each one of them and can mount each one using Ubuntu.

The problem "may" have occurred when I reduced the size of some linux partitions using gparted. I still have plenty of space in each of those partitions.

When I started gparted all of the HD was unallocated. I did that from each ubuntu installation and the PCLINUX installation, plus LIVECDs. All indicated the space was unallocated.

When I did an fdisk -l from a Puppy Linux LiveCD I got a normal start and ends of each partition.

When I tried it from Ubuntu installation or live cd, I received the following types of responses:

ubuntu@ubuntu:~$ sudo fdisk -l /dev/sda5

Disk /dev/sda5: 28.5 GB, 28566397440 bytes
255 heads, 63 sectors/track, 3473 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
ubuntu@ubuntu:~$ sudo fdisk -u /dev/sda5

The number of cylinders for this disk is set to 3473.There is nothing wrong with that, but this is larger than 1024,and could in certain setups cause problems with:

1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Plus the Windows partition seems to go over its limits.

Since all of my OS installations are still working, I don't know how critical this is. From reading another post, I understand this might be able to be fixed by making some changes in fstab.

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Banning the IP is the best way to protect your server but of course, attacker can use another IP and use a lot of your bandwidth until you find and ban the IP. So the only thing we can do to prevent this is, block the packets my iptables length module.

I check the bandwidth usage through "iftop". Incoming traffic is always like 120kb/second and that has to be that way because the traffic enters my server no doubt that it gets dropped by iptables later.

The actual thing what the Ddos ( UDP Flood ) does it that it causes an outbound traffic that eats up like 5mb/second easily and my servers lag. Only if the IP is banned, the outbound traffic comes to an end.

Now I want to use the length module to block it but it just won't work. I've tried the following and shuffled them too but no help.

iptables -I INPUT -p udp -m length --length 15 -j DROP
iptables -A INPUT -p udp -m length --length 15 -j DROP
Packet length is 15 according to tcpdump:

19:49:34.504864 IP fms-02.colt.net.belgamanagement.be.56413 > nyc.v1servers.com.20100: UDP, length 15

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my computer froze solid, and it would not react to anything. X didn't react to Ctrl+Alt+Backspace, not Ctrl+Alt+Del, so I had to turn it off using the power button.

This is the first time my computer freezes like this, the log files did not reveal any HW errors. Is it possible that someone in the channel did not like my level of Java skill, and flooded me to disconnect?

By the way; Im using slackware 13.1 with the default kernel ( and irssi as IRC client.

I know that if you eg. ICMP-flood someone, the traffic will be denied and, but can it provoke other behavior from the computer?

So my question is; can a IRC flood/DDoS attack cause a computer to freeze sub zero?

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# Saved in /etc/init.d, runlevels 2 3 4 5


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It boots for the first time,everything looks great and it asks me to update some programs.After it does that,I restart and I get a grub rescue message while there was a strange clicking sound coming from the hard disk. I reinstall Ubuntu through BIOS with a CD and I bring the system to the original state.

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Truth is that the specific model has this problem with the hard disk that makes that constant clicking. When running Vista I have a program called Notebook Hardware Control which lowers some settings and stops the clicking.When running Ubuntu, there isn't any. So is there a way to know which program can cause such an error and refrain from updating it?

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I installed ubuntu 10.04 desktop edition on 3 pc (there is not a server-client architecture). I installed samba.(and smbfs)

put the strings:
comment = ...
path = /...
guest ok = yes
read only = no
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Computers that access to that directory do (on boot, with root privileges)
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