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  • TCP: Treason uncloaked!

    - by hurikhan77
    On one linux server (Gentoo hardened), we are experiencing bursts of the following messages in dmesg from time to time: TCP: Treason uncloaked! Peer xx.xx.xxx.xxx:65039/80 shrinks window 4094157295:4094160199. Repaired. Is there anything we should take care of or is this normal?

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  • How can I put together services bettwen differents servers?

    - by poz2k4444
    For a schoolar project, I have to run differents services in a lab enviroment where I'll have 6 computers working as servers, what services can I put together, and what cannot be, in order to prevent security risks, and considereiting that if one service goes down, affects less possible the function of the server farm, the services are: MySql Http for intranet Https DHCP IPP SMTP LDAP VPN SSH NTP DNS NFS I'll use linux

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  • Rookie file permissions question

    - by Camran
    What is the ending 'r' for and the leading 'd' for in file permissions on Linux? Example: drwxr-xr-x I know about the user, group, others part, and I know w=write, r=read, x=execute. But I don't know about the leading 'd' and the trailing 'r'. Care to explain? Thanks

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  • UDISKS instead of HAL

    - by MeJ
    Does anybody have some expirence with udisks, because HAL won't be longer supported on the most linux distribution, so I am thinking of to use udisks for UDI in $(hal-find-by-property --key storage.bus --string usb) do HAL_TMP=`hal-get-property --udi $UDI --key storage.removable.media_available` if [ "$HAL_TMP" = "true" ]; then HAL_DEV=$(hal-get-property --udi $UDI --key block.device) HAL_SIZE=$(hal-get-property --udi $UDI --key storage.removable.media_size) HAL_TYPE=$(hal-get-property --udi $UDI --key storage.drive_type) How do I have to adapt the above mentioned commands but use udisks instead of hal Thanks!

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  • Log viewer server and client

    - by Scott Crooks
    I'm looking for a log viewing solution for (mostly) Linux and (preferably) Windows too. I want to be able to centralize the log information for a lot of servers so that people in the company can see what's going on for different servers. I would guess this would involve having a central server which accepts information from the various computers / virtual machines with (perhaps) a running daemon on each of the servers. Does such a software exist?

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  • Write, wall, who and mesg

    - by miniBill
    I want to set up a server with a lot of users so that (in order of importance): Users cannot obtain ip addresses of other users with who, or last Users cannot wall Users can write to each other Users are able to selectively mesg n other users, as opposed to simply blocking everyone Point 1 is easily solved by a 660 on wtmp and utmp, but I don't know how to achieve the other points The server runs Gentoo Linux

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  • The wireless connection could not be detected by other computer

    - by Rienna
    i tried to configure router pc in my linux ubuntu 10.04 . I use 2 connection to connect 2 client. 1st computer use LAN connection and 2nd use wireless connection. when i make new wireless connection in my ubuntu, the wireless that i make could not be detected by other computer that use wireless connection.i have tried to use windows and ubuntu as a client but it doesn't work. Maybe there's someone who know about it. Please share :)

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  • Why does pinging a local router return "Destination Host Unreachable"?

    - by Matt H
    I have two tomato routers. One is bridged wirelessly with the other. I have a new server on the network. It's running Ubuntu Server 11.04. They are all connected like this: A - Linux PC B - New Server C - Mac Mini D - Macbook T1 - Tomato 1 T2 - Tomato 2 They are connected like so: A -----+-T1 ==== wireless bridge ==== T2----- ADSL modem | | C & D Connected wirelessly to T2 B -----+ A, C & D do not experience any issues. I have an active SSH session to B from A and it's not experiencing any loss. B, the new server occasionally cannot ping T2 and therefore cannot connect to the internet. However, A can always contact B and B can ping A and B When the network is lost, B can still ping T1, but not T2 yet at the same as B has lost connection to T2, A can still ping T2. Any ideas on what this could be? there is nothing that gives any clues in any of the logs on either router or the linux server. One thing that is interesting is that I set up a ping running between B and T2. T2 has the IP address 192.68.1.1 Here is what I am seeing: From 192.168.1.1 icmp_seq=26 Destination Host Unreachable From 192.168.1.1 icmp_seq=27 Destination Host Unreachable From 192.168.1.1 icmp_seq=28 Destination Host Unreachable From 192.168.1.1 icmp_seq=29 Destination Host Unreachable From 192.168.1.1 icmp_seq=30 Destination Host Unreachable From 192.168.1.1 icmp_seq=31 Destination Host Unreachable From 192.168.1.1 icmp_seq=33 Destination Host Unreachable From 192.168.1.1 icmp_seq=34 Destination Host Unreachable From 192.168.1.1 icmp_seq=35 Destination Host Unreachable 64 bytes from 192.168.1.1: icmp_req=36 ttl=63 time=3.40 ms 64 bytes from 192.168.1.1: icmp_req=37 ttl=63 time=5.70 ms 64 bytes from 192.168.1.1: icmp_req=38 ttl=63 time=2.25 ms 64 bytes from 192.168.1.1: icmp_req=39 ttl=63 time=2.18 ms 64 bytes from 192.168.1.1: icmp_req=40 ttl=63 time=3.12 ms 64 bytes from 192.168.1.1: icmp_req=41 ttl=63 time=2.15 ms 64 bytes from 192.168.1.1: icmp_req=42 ttl=63 time=1.97 ms 64 bytes from 192.168.1.1: icmp_req=43 ttl=63 time= And it cycles to being reachable and not. So I guess you could say the question is, why is the router responding that it cannot be reached?

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  • Automake thumbnail

    - by Webmaster
    What I need to do is a program that given (as a command line argument) a directory with more directoreies inside, and 4 Pics inside of each dir, the program makes a thumbnail of the 4 files and glues them together (2 rows, 2 columns) and renames that image to the name of the directory. I think it could be done with a combination of a program and shell scripting (I'm experienced in M$, but new to linux). Some real examples would be great. Thanx in advance

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  • RAID level hard drives?

    - by JT
    Hi All My Motherboard has 4 internal SATA ports. I am considering a linux software raid. I plan to use this for backing up my work movies, music etc Do I need to spend the money on RAID Level drives? Or am I safe with standard hard drives? a 2TB Hitatchi 7200 is like $89 at NewEgg where a Samsung F1 RAID 1tb is $150.00 Thoughts?

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  • Create new vsftpd user and lock to (specify) home / login directory

    - by Geoff Jackson
    I need to periodically give temporary and limited access to various directories on a CentOS linux server that has vsftp installed. I've created a user using useradd [user_name] and given them a password using passwd [password]. I've created a directory in /var/ftp and then I bind this to the directory that I wish to limit access to. What else do I need to specifically do to ensure that when this user logs into FTP, they only have access to this directory please?

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  • How can I direct rsync output / log to the remote server?

    - by Guest
    I am able to output rsync logs on the client machine using --log-file=FILE but I want the output to be sent to the server instead. The client is a W7 machine (cygwin) and the server a Linux NAS. This is the command I use which successfully logs the file on the client. I'm looking to have the file sent to the server instead: rsync -PavOs --delete --log-file=/somepath/rsynclog.txt -e "ssh -i /somepath/keyfile -p 1000" "/somepath/User/" [email protected]:/somepath/User/ Thanks

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  • Install boot loader with no operating system on hard drive

    - by Jeet Robert
    I am trying to reset — or rather, install — a boot loader on my hard drive. I initially had a Linux distro installed, which I completely wiped out. Now, when I try to install Windows 7 from my USB, my machine says Missing operating System And when I don't boot with USB, it says "bootmgr is missing" So now I am wondering, how I can install a boot loader, so I can install Windows 7?

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  • Can't boot from CD

    - by Jason Swett
    I installed Ubuntu on a PowerBook G4 and it only works about 10% of the time. For this reason I decided to re-install OS X, but my machine won't boot from CD. It also won't boot Ubuntu the vast majority of the time, so I'm kind of screwed. After a ton of tries, I finally got my machine to boot a Linux command line. Is there anything I can do at this point to make my machine more runnable, just for the sake of installing OS X?

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  • Can't boot from CD

    - by Jason Swett
    I installed Ubuntu on a PowerBook G4 and it only works about 10% of the time. For this reason I decided to re-install OS X, but my machine won't boot from CD. It also won't boot Ubuntu the vast majority of the time, so I'm kind of screwed. After a ton of tries, I finally got my machine to boot a Linux command line. Is there anything I can do at this point to make my machine more runnable, just for the sake of installing OS X?

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  • Dropbox to sync *nix home folders.

    - by Somebody still uses you MS-DOS
    I'm using a Linux machine at work, and started using at home in a VM for some home development. I have a vimrc and a bashrc with some configuration, that are useful for both machines. What is the best way to sync them? Create a symlink for each file in my home folder pointing out to a the respectives files in my Dropbox sync folder? Is this possible (delete .bashrc and create a symlink instead)?

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  • What's the correct SELinux type for a directory?

    - by unthar
    If I create a new filesystem/directory off of / and I set the Linux permissions to 770 I expect the group to be able to read and write files in that directory. SELinux was preventing me from doing this until I changed the SELinux type on that directory to public_content_rw_t. If this is just a directory in which users in that group will share files is this an acceptable SELinux type or should I be using another one? Writing a custom policy seems like overkill for these purposes. Thanks

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  • Allowing an user to execute just something

    - by Jack
    Hello, which is the best way to allow a new user that I just created on ubuntu linux 9.04 to execute a script that requires some sudo without allowing him to the sudoers? The fact is that I want to give the user just the ability to execute that script, without letting him to do anything more. Is there a simple way to do it?

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  • Oracle Virtualbox on statically compiled kernel

    - by aking1012
    I can't seem to find any documentation on the subject. I'm working on putting together a linux install for a fairly "dirty" environment. Best practice there would be a statically compiled kernel with no module support. I can already do the customizations to strip out unnecessary drivers/etc to get the performance and disable module support. Does anyone have a link or any ideas on how to get the Oracle Virtualbox module (not the OSE one, I need USB passthrough) compiled in?

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