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August 13th, 2004, 06:37 PM
Just out of curiosity, wouldn't netcat be run under the same user as the web server itself? If that's the case, surely having the shell for whatever user the web server runs as set to /bin/false...
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July 17th, 2004, 02:13 PM
To make the ntfs partition readable by other users, mount it with a umask of 0222, like this:-
mount /dev/hdXY /mount/point -o umask=0222
Alternatively, you could add the partition to /etc/fstab...
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June 30th, 2004, 04:02 PM
Now for the simple answer. If you're scanning from across the internet and port 80 is showing as open, don't worry about it. Lots of ISP's use transparent caching on port 80, and this is why port 80...
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June 14th, 2004, 03:45 PM
I tested this exploit on a 2.6.5-gentoo-r1 kernel, and can confirm this locks your computer solid. However, when I tried it on a dual-processor box with the same kernel source, it only crashed 1 CPU....
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April 15th, 2004, 03:58 PM
If your clock is correct, you can fix this error by using touch. Type touch Makefile in the same directory as the source for mplayer. If your clock is wrong though, you'll have to touch all the...
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April 15th, 2004, 03:39 PM
How many of these linux bugs that are up to 1.8 years old have had advisories, and have been actively exploited in the wild? Not all bugs are security issues either, some will be annoyances, others...
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April 14th, 2004, 05:43 PM
Yet again they've failed to fix the local zone and CHM bugs that spammers and virii take advantage of. These flaws are at least 4 months old, are being exploited in the wild, and have remained...
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February 17th, 2004, 03:09 PM
Ah, boot sector virii, now there's a blast from the past. :) I'll assume you're running win9x and not NT/2000/XP. Whilst the advice of using fdisk to overwrite the MBR is correct, you still have the...
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February 9th, 2004, 06:02 PM
If the router is UPnP-aware, turn on the UPnP service in windows and in the router configuration to allow programs to automatically open ports in the router firewall. This should cure MSN and other...
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February 3rd, 2004, 06:23 PM
Try www.underground-book.com There's a version of the book available as a free download, and it's full of stories about the sort of activities you want information on. The best part is that all the...
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February 3rd, 2004, 06:14 PM
Formmail.pl is a well-known, but very poorly written CGI script for sending e-mail from a web form. It's so bad that many ISP's and web hosts explicitly forbid it's use. Spammers scan for sites with...
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January 30th, 2004, 04:12 PM
IIRC, you could set a default policy of DROP on the output chain to prevent any packets leaving your PC, but this would be so restrictive it would break things like X. It would be far better to leave...
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January 28th, 2004, 02:30 PM
There's a fortran compiler in the gcc compiler collection, g77. As the name suggests, it only supports fortran 77 though.As for getting started, I'd suggest installing linux, as it comes with at...
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January 27th, 2004, 12:56 PM
It sounds to me like the scanner you used is getting confused. UDP port scanning is very different to TCP scanning, and is pretty unreliable. With a UDP scan, you send a packet to the port, and if...
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December 28th, 2003, 10:13 PM
It does it by setting the TTL field on the UDP packet it sends out. As packets travel to their destination, every router it passes through decrements the TTL field by 1. Once the TTL gets to 0, the...
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December 28th, 2003, 04:45 PM
Nope, traceroute under linux uses UDP by default. To make it use ICMP echo requests instead, you have to use the -I option on the command line. From the man pages:-
-I Use ICMP ECHO instead of...
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December 28th, 2003, 04:01 PM
Oops, you're right, I made a mistake. Was thinking about the traceroute utility using UDP by default. :) Still, traceroute is similar to ping in that it waits for unreachable messages, just a little...
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December 27th, 2003, 05:38 PM
No. UDP port scanning and UDP pings are 2 totally different things. A UDP port scan works like this: A UDP packet is sent to a UDP socket on the remote host. If it doesn't respond, the socket is...
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December 27th, 2003, 05:22 PM
Ah, you're using redhat. In this case, recovery is quite easy. Just boot from your install CD, then type linux rescue at the boot: prompt. Once you've got a prompt, type chroot /mnt/sysimage, and...
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December 27th, 2003, 05:17 PM
Now to answer the question...
The reason nmap is reporting the host is down is probably because of the type of ping it's been told to use. By default, nmap when run through nmapfe will ICMP ping...
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December 26th, 2003, 09:02 PM
My suggestion would be for an SMC barricade. I paid about £70 for an SMC7004BR a couple of years ago. They've been replaced by newer, better, and cheaper models now though, so it's got to be worth...
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December 25th, 2003, 07:09 PM
I see you've lost your root password. In that case, we need a bit of information about how the computer is set up, if you want step-by-step instructions. What distro are you running anyway? Some are...
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December 25th, 2003, 05:30 PM
Why bother with boot CD's when you can just log in as root and do it from there? He only wants to change the grub password. ;)
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December 24th, 2003, 10:27 PM
This is an easy one to fix. Mount your /boot partition, and edit /boot/grub/grub.conf The encrypted password is stored in there. Just create a new password hash and replace the one that's listed in...
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December 12th, 2003, 06:53 PM
The easy way to disable apache proxy functions is to comment out the lines that load mod_proxy, mod_proxy_connect, mod_proxy_ftp, and mod_proxy_http. Here's an extract from my apache.conf file where...
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