Hardware :: Differences Between Base Adress And I/O Address?
Jul 15, 2010What are the differences between base address and I/O address?
View 1 RepliesWhat are the differences between base address and I/O address?
View 1 RepliesIs there any tool or command where I can track down the IP-ADDRESS of a machine within the subnet using its MAC-ADDRESS .
View 11 Replies View RelatedIm an academic (university networks and security lecturer) studying/teaching network and operating system security, and inspired by the work of Hovav Shacham set about testing ASLR on linux. Principley I did this by performing a brute force buffer overflow attack on Fedora 10 and Ubuntu 9. I did this by writting a little concurrent server daemon which accidently on purpose didnt do bounds checking.
I then wrote a client to send it a malicious string brute forcing guessed addresses which caused a return-to-libc to the function usleep with a parameter of 16m causing a delay of 16 seconds as laid out in [URL] Once I hit the delay I new I had found the function and could calculate delta_mmap allowing me to create a standard chained ret-to-libc attack. All of that works fine. However .... To complete my understanding I am trying establish where I can find the standard base address for ubuntu 9 (and other distros) for the following, taken from Shacham:-
Quote:
[code]....
/proc/uid/maps gives me some information but not the base address ldd also gives me the randomised starting address for sections in the user address space but neither gives me the base address. Intrestingly ... when a run ldd with aslr on for over (about) 100 times and checked the start point of libc I determined that the last 3 (least significant) hex digits were always 0's and the fist 4 (most significant) where between 0xB7D7 and 0xB7F9. To me this indicated that bits 22-31 were fixed and bits 12-21 were randomized with bits 11-0 fixed. Although even that doesnt define the boundaries observed correctly.
Note: I am replicating the attack to provide signatures to detect it using IDS, and for teaching purposes. I am NOT a hacker and if needed to could reply from my .ac.uk email address as verification.
I am interested to know memory layout in linux os.What are the differences between physical address and virtual address?
View 1 Replies View RelatedI am trying to understand working of pci_resource_start function So I browsed code via cscope and searched for string pci_resource_start and got following in pci.h
Code:
#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
I am not able to understand how does this above macro works. How does it above macro gets appropriate base address register in configuration space?
I am using Fedora 14 (64 bit version) Can't start XAWTV. Returns this error: $ xawtv This is xawtv-3.99.rc6, running on Linux/x86_64 (2.6.35.12-90.fc14.x86_64) xinerama 0: 1920x1080+0+0 WARNING: No DGA direct video mode for this display. WARNING: keeping fbuf pitch at: 7680, as no base addr was detected WARNING: couldn't find framebuffer base address, try manual configuration ("v4l-conf -a <addr>") v4l2: WARNING: framebuffer base address mismatch v4l2: me=(nil) v4l=(nil) Warning: Missing charsets in String to FontSet conversion Warning: Missing charsets in String to FontSet conversion Oops: can't load any font
View 1 Replies View Relatedi installed slackware current straight(make iso from it and installed on clean disk) and i installed Multilib current from alien and now when i wanna compile wine source its write
"configure: OpenCL 32-bit development files not found, OpenCL won't be supported.
configure: libsane 32-bit development files not found, scanners won't be supported.
configure: gstreamer-0.10 base plugins 32-bit development files not found, gstreamer support disabled
[code].....
I checked i got that libaries in /lib and /lib64 why it doesent work it was working on slackware 13.1 with multilib
can we find logarithm to base 10 instead of base 2 on shell script??i can do it with bc..like 'l(1000)/l(10)' | bc -l
View 1 Replies View RelatedI am having a small doubt regarding base address.. Base address will be there for register or Hardware pin? or both?
View 1 Replies View RelatedI have a router that is 1000 Base T and two computers each with ethernet cards that support 1000 Base T. All are equipped with Cat 5e cable. Before I had a router that only went up to 100 Base T and I would setup one box with linux running proftpd. On the other box,I would use win xp pro and use firefox to ftp into the other box and download a file. Download speeds went up to 11.2 MB/sec. Now when I switched routers, I expected something like 120 MB/sec but I'm only getting 5.3 MB/sec. What do I need to change?
View 12 Replies View Relatedi installed opensuse 11.2 but the network is still not running. On startup the dhcp client does not recive an adress. Here is the output from the boot.msg
Code:
Setting up (localfs) network interfaces:
lo
lo IP address: 127.0.0.1/8
IP address: 127.0.0.2/8
[Code]...
Okey I have a good start i know there is something I'm missing. After Following this great help tutorial.[URL]..And kinda guestimating and messing around with my Linksys creating a new router assigning a static ip "Lan and wireless" address. configuration for the router looks like this.
[Code]...
I think I might be messing up the interface config file at the "NETWORK" section but i don't know.
it�s been several years since i played with iptables. I have setup like this:eth0 is the only physical device on box and eth0:0 is aliased. Traffic going out of the box to internet uses eth0eth0 116.55.58.1eth0:0 116.55.58.2I have a service listening on port 80 on 116.55.58.2Lets say my client connect to 116.55.58.2:80 through 116.55.58.1 , how do I force (mangle you name it) with iptables that the outgoing source address will be always 116.55.58.2?
View 1 Replies View RelatedI'm not able to set up eth0 with a static ip adress.service network restart and it was okkay but when I try to turn off and turn on, the ip adress is set up with dhcp.
View 7 Replies View Relatedjust installed ubuntu in 1 of my boxes is an old compaq presario v2000. Is running dual boot with XP, the problem is i dont have internet connection(wireless and wired) with Ubuntu but i do with XP. I read like hundreds of posts from diferent forums and i wrote all crazy commands in terminal but aint working. I tried directly trough the modem (motorolla 2210)and with the router(netgear wgr614) via wired and wireless and aint working either. For some reason ubuntu doesnt request an ip adress from the router or the router dont asign an ip adress to my linux box.
View 7 Replies View RelatedI run a local apache server, that has some virtual hosts running. Now I want to be able to locally connect to these virtual hosts, but when I try this, it puts www and .com behind the url and says it can't find it. On Windows I know the equivalent, editing the hosts file. Is there something similar in linux?
View 1 Replies View RelatedI have configured connection properly through mobile phone (SonyEricsson C510) by bluetooth. I get dynamic IP address and can ping everything but can't ping my IP adress which was automaticaly granted, from outside. SuseFirewall is stopped.
View 6 Replies View RelatedSeen as my ATI driver doesn't support Ubuntu 9.10 and neither does LinuxMCE [my two biggest bug bears at the moment] I am considering downgrading to Ubuntu 8.10.
I just wondered if there were any major differences or if I am likely to see any major issues because of things that were fixed or added to 9.10 that weren't available in 8.10.
Anyone knows the differences between UID 0 and GID 0?
View 6 Replies View RelatedI have a proprietary device - something like an iPad screen - which has a front panel display with touchscreen buttons that work internally as a USB keyboard. During testing/debugging I want to connect it to another keyboard via the external USB port.Any application which I open on the device by pressing some characters on the touchscreen accepts input codes from either USB keyboard. I want to limit the touchscreen USB keyboard input only to a specific set of apps.Is there a program which can help me detect which USB port or device the code is coming from? Or someway I can map one keyboard to send a different set of codes? The device is using Linux.
View 2 Replies View RelatedI've seen in the forums people prefer or dislike Gnome/KDE. I looked around and the differences seem to be cosmetic and not that complicated. Are there any differences "under the hood"? What I mean by this is maybe the way programs behave, user options, etc. or is it all cosmetic?
View 2 Replies View RelatedI am not having a problem but I was just wondering, now that 10.10 launch is coming nearer, whether or not to upgrade from 10.04 to 10.10. 10.4 is working fine and the only real reason for me to upgrade would be a better boot time (is there a better boot time with 10.10?) ... or am I missing an other important reason?
View 4 Replies View RelatedI've used two internet services to show me my IP address, and I get different results:1. Whatsmyip.org : ***.**.109.***2. ipchicken.com : ***.**.111.***All the * numbers are same, except 109 and 111. (or link me to explanation) of which one's which?
View 8 Replies View RelatedMy old Intrepid box got old and senile in the hardware, so I had to take it back round the shed and put her down.I buried her next to her favorite tree in the backyard. So yes, I got this new Mini ITX setup with a dual core Atom processor and 4 gigs of ram for my new computer. I'm going to use it as a media center in my living room. However Atom 1.6 ghz is no screamer so I'd like to build a system using a light weight operating environment to leave more power for running programs and playing my media.
I could install the latest version of Kubuntu again but I thought this time I'd try to get a bit deeper into Linux and educate myself. Could someone clarify the differences between XFree86, Window Manager, and a Desktop Environment (KDE/GNOME/etc)? I know it goes like Hardware -> XServer -> XFree86 -> Window Manager (I read the tutorial on linux.org). But where does KDE or a "Desktop Environment" come in? Is KDE a decked out window manager with its own programs that runs on top of XFree86 or what? Or does it totally replace XFree86?
I was wondering what are the main difference with these two languages? I mean besides just the syntax, only recently started looking at pascal. I find the syntax of Pascal nicer than C. So under the hood so to speak what are the differences? Also why do i see many look down at Pascal? Since C and C++ now are in more use than pascal, im guessing it offers something that Pascal and Object Pascal cant?
View 8 Replies View Relatedwhat the actual differences are between the different versions?Is it simply in the interface or does netbook have different services running by default, different hardware detection or anything else that makes the system run any differently? I know netbook doesn't have compiz installed by default but is the rest of the package set the same? I ask because I have been having various problems with boot and audio along with a few other niggles. I was running the desktop edition through the betas and the RC with no problems at all but I installed lucid final from a netbook edition iso and have done two more fresh installs from netbook iso and seem to be having a lot more issues.
View 5 Replies View Relateddifferences between Valgrind and Frama-C. I need tools for debugging my C projects, which are getting too big and complicated to debug.
View 4 Replies View RelatedI've got a slight problem here, and have had it for a while: When I use the "Sharp'N'Clear" .fonts.conf from Here, and set an optimized font like Arial, gtk-based applications render correctly, while Qt-based ones don't As you can see, the top window(Firefox) has it's fonts clean and nice. The bottom one(Dolphin) does not. Both are set to Arial 9. I've tried it with a number of different applications, including some custom PyQt4 stuff, and it's clear that it's -all- Qt-based applications and not just one or two.
For further information, I've had this problem ever since I upgraded from Kubuntu 9.10 a while back - That version worked correctly on both Qt and gtk, but nothing since has.
I'm just wondering if there's a page out there that lists the improvements and other changes to Ubuntu from Maverick to Natty.
View 2 Replies View RelatedI took the simple approach and installed the gnome desktop, but I have read about KDE and Xfce and am curious. There may be a lot more that I just haven't heard about yet too. So the question is: Without doing a reinstall and messing up the downloads and settings I have now, how do I try a new desktop like Xfce or Kde? Also, what are the basic differences between the desktops?
View 9 Replies View Related