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niels

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  1. niels

    Iptables

    Yes it is, I'm using a ruby script to deploy several firewalls on different servers and a git repo to keep up with the changes. But I also tried this one manually and I wasn't able to get it working. Anybody a clue, seems that older servers can't handle the syntax.
  2. niels

    Iptables

    I'm using this version of debian: Linux version 2.6.26-2-xen-amd64 (Debian 2.6.26-24) (dannf@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-25)) #1 SMP Sun Jun 20 20:51:58 UTC 2010
  3. niels

    Iptables

    Hey everybody, I'm having some issue on an older version of Iptables version 1.4.2 I'm using this command : iptables-restore < /etc/network/iptables.config And the content of the iptables.config file is : *filter -P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT -A INPUT -i lo -j ACCEPT -A OUTPUT -o lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT --src x.x.x.x -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT --src x.x.x.x -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT --src x.x.x.x -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j DROP -A INPUT -j REJECT -A FORWARD -j REJECT COMMIT I've used this exactly the same config for another server and there I did't got any troubles. But now I got this output: iptables-restore v1.4.2: no command specified Error occurred at line: 16 Try `iptables-restore -h' or 'iptables-restore --help' for more information. I already truncated the file line endings, commenting out some rules but still didn't work. And it always throws the error/exception. Strange part is I use the exact same file for another server and it doesn't complain about any errors or exceptions and it works fine. Anybody had the same experience or anybody some advise ? Thanks a lot in advance!
  4. Hey everybody, I'm looking to setup a nice rig to run ESXi. Run it smoothly with 20 virtual instances max 30 instances running. Could anybody tell we what I need of system requirements ? I was thinking on 16 Ram, 500 - 1000gb hdd, 2 x intel quad-core processor. I'm seeking some advise from some people with some hands on experience who could advise me. Thanks a lot in advance, cheers
  5. byobu, but it is only an enhancement of screen but you can take a look.
  6. I'm also interested in the HowTo looking forward to see something appear on the forum!
  7. I did some more investigating on my own. And I was thinking that a setup like this would work: Setup an OpenRADIUS or YubiRADIUS server, add all my current servers as Radius clients. Then use a pam module with ssh so people could login. This way I have Authentication, Authorization, and Accounting (AAA) but this has one drawback I can't manage privileges of the different users. Downside is everybody could login on al the servers, that's something I would like to prevent. So anybody who has a solution or comment on my idea? Just exploring these solutions/ options / ideas myself so don't shoot me if I got the facts mixed up :). But I'm eager to see what comment you guys have? Does anybody has some experience with IAM systems (Identity and Access Management systems)?
  8. Hey everybody, at the company I'm working for, the number of servers is climbing very fast nowadays. Now we're looking for a way to manage the access to these server instances, now is using ssh and PKI, so manually deploying/managing the keys is a hard task. Also managing password of different services on the servers, is running out of control. Does anybody know a good way of solving this, or some software implementation that could free us from this burden? I was thinking of maybe using the YubiKey, for authentication. Thanks a lot in advance. Regards, Niels
  9. Hey everybody, I'm experiencing some weird things with a pc and a printer of some acquaintance of me. I was hoping that some one could help me understand the problems. The pc is running a old fashion Windows XP with LibreOffice installed on it. Now the problem, occasionally they want to print some doc file and 50% of the time the printer works fine, they are using a Samsung printer (I can't remember the exact printer but I will update my post later on this.) And the other 50% of the time, it seems like the pc doesn't pass on the command to print to the printer so weird. They after some reboots it starts printing the queue automatically. On the website of samsung I founded some tool to check the printer and do some tests and cleaning operation. And I responded fine to all the demanded actions. Now could any body share there knowledge and help me fix this problem ? Thanks a lot in advance.
  10. niels

    Tcp/ip

    Doesn't the IP Protocol allow a MTU up to 65,515 bytes ? Or am I making a mistake here ?
  11. Hey everybody, I'm planning to get more into some java frameworks and hope to find some experiences here on the forum. I thought to start with taking a closer look at Spring 2 and Hibernate. Can somebody recommend some good books or other informational materials or tutorials? Thanks
  12. Hey everybody, I'm running iTunes 10.5b118 (118) 64-bit now I recently downloaded some music files. So I imported them in iTunes, played them and while the song is playing you hear a scratching like very high soun. Some songs have the same phenomenon. I is very strange, when I play the songs with vlc player on the same mac I don't hear the song. Does any one on the forum experienced the same problems ? Or now where I can find help, apple support sucks. Thanks !
  13. Like mentioned before it all depends if you have a small or large organization. But if you want a virtual server to go take a look here => Turnkey Fileserver This is a preconfigured fileserver with samba. If you have a larger organisation then you can check this link out to configure ldap with samba => Samba & LDAP This wiki page contains a lot of information to start with. Hope it can be of any use.
  14. Nothing so far to test the hardware but, I installed Mac os x 3 times the last day on the MBP so I don't think it's a hardware failure of the MBP. The usb drive I'm using formatted it installed the live BT5 on it with no problem at all. It ran the live BT5 without any errors. So it's seems strange to me that it's a hardware failure, I'm now downloading the BT5 R1 using a direct link will check the MD5 hash and then try to reinstall BT5 on the MBP. I tried using the BT5 release but I got a boot error so .... wish me luck on my next try :) EDIT: Finished the direct download, checked the MD5 hash, installed the iso on a different usb, installed BT5 R1 Gnome 64 again. => same problem trying hangs on the udev thing I mentioned above :s btw I can find anything useful using ' oom_adj is deprecated' in google but I will search a little bit deeper :)
  15. Could you tell me what you're using to search in google ? Yes, it always hangs there every time , although it seem in recovery mode it gets a little bit further in the boot process. I didn't try modifying any parameters in GRUB because I couldn't find amy decent information about my problem, probably not using the right search techniques :). I already took it to the backtrack forum but I can't get a thread to be posted, and I don't know why, the admin don't approve my thread to be posted I think. So I'm glad that I'm getting any response from the Hak5 forum :)
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