Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.

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Auto modify all routes by a specific dev

I have to modify all routes using one specific dev. Not even modify, just append a correct src то the end of a route, like this: x.x.x.x(destination network) via y.y.y.y(MYDEV ip) dev MYDEV(network ...
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0answers
9 views

How to duplicate one virtual desktop to second monitor? [migrated]

I use 2 virtual desktops, sometimes I need to show my broswer to another people, periodically for a short time. I have 2 monitors, one a can rotate 180 degrees, but I can't see on it anymore. So i ...
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0answers
12 views

logrotate syntax error near unexpected token `20'

I cleared out my apache logs last week and now started to get these errors. Any ideas how I can fix this? /etc/cron.daily/logrotate: logrotate_script: -c: line 1: syntax error near unexpected token ...
-3
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0answers
15 views

How do I reach devices on a DIY wireless access point? (different subnet) [migrated]

The wireless component of my router started suddenly flaking and dropping connections, so I improvised a WAP from an old netbook, wired to this router. I'm very ignorant about networking so I'm sure ...
0
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0answers
11 views

Unable to install Plesk 12 in Ubuntu 14 [on hold]

I have "Ubuntu 14.04.2" VPS. I tried installing PLesk 12 using Plesk installer. But it throws with the error: File downloading ...
0
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0answers
19 views

ssh_exchange_identification: Connection closed by remote

after a few hours of asking google ( and a lot of serverfault pages ) i didnt found a answer. After arround 100 ssh login's the server answers : "ssh_exchange_identification: Connection closed by ...
0
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0answers
6 views

Strongswan transport mode ipsec within subnet

Is there any way to configure strongswan to automatically start encryption to a given subnet rather than specific host? For example, if I know that my hosts at w.x.y.z/28 will be have the same PSK ...
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0answers
12 views

Free memory showing wrong? [duplicate]

Current free command output total used free shared buffers cached Mem: 11909 11628 281 0 639 3636 -/+ buffers/cache: ...
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0answers
7 views

Combining IPTables Accounting and Transparent Proxy Rules

I'm trying to combine IPTables traffic accounting rules with those required for transparent proxying and still maintain the accounting. I have one system that is handling both accounting and the ...
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0answers
6 views

One printer shared by samba cannot be added to Windows via GPP

I've got a Scientific Linux 6.6 print server using cups and samba. We deploy the printers via GPP to Windows 7 x64 Enterprise clients. The latest printer we've added works file from Linux, but cannot ...
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votes
1answer
32 views

How to password protect a file? [on hold]

I have a script called 'Linux.sh'. This script should be executed by every one . it should prompt for password when some one edit it . I have tried by using ' vi -x linux.sh ' to password protect the ...
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0answers
7 views

auditd execve arguments that looks like encoded data

I'm logging all execve's in a sort of honey pot box and as such I try to make sense of the commands. There's many many of these, all with 'bash -c' and some long alpha numerical value not enclosed in ...
6
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2answers
103 views

Default policy for OUTPUT

Are there any security risks of having policy for OUTPUT set to ACCEPT? Machine in question is VPS hosting few websites, git repositories, jabber server and mail.
0
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1answer
24 views

Segmentation fault diagnoses

I am trying to diagnose a segmentation fault issue that started to occur after upgrading to Ubuntu 14.04 (32 bit). I am running a TSM client 6.2.5-4 which worked fine up to the upgrade. I tried to ...
0
votes
2answers
16 views

Try to secure file system root with Apache2/Debian: all virtualhosts return 403 forbidden

I have Apache2 running on a Debian server. My virtualhost (one for now) are already configured in /etc/apache2/sites-available/default and are working fine: # /etc/apache2/sites-available/default ...
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0answers
34 views

What System Does Facebook Use To Manage It Files? [on hold]

How Does Facebook Manage It System ? What System Does It Use To Manage It Files , Database , etc.. ?
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0answers
34 views

rcu_sched self-detected stall on CPU on Debian server

My server is online since October 2014. Debian GNU/Linux 7.6 uname -r 3.10.23-xxxx-std-ipv6-64 It was working fine till last night. Last night it bacame unresponsible. I rebooted it from dadata ...
2
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3answers
31 views

Output of a command to the first line of a file

I am trying to insert output of a command into the first line of a file. For example, I have a file named "list.txt" and want to insert a text containing all the file names in that folder. A way to ...
0
votes
1answer
16 views

Red hat installation does not detect hard drive

I have an HP BL460C Gen 8 having real hardware RAID. I am trying to install Red Hat Enterprise x86_64 bit on an HP ProLiant (iLO 4) server with an Array of 2 hard drives configured as RAID1. The ...
0
votes
1answer
20 views

vmware deployment from Linux or Ubuntu

Is there a way to deploy VMWare virtual machines from Linux? By deploy I mean provision from remote esx. Thanks.
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0answers
10 views

Is it possible to have socket TCP proxy anonymous as a system-wide implementation? [on hold]

Is it possible to have socket TCP proxy completely anonymous on a linux level implementation ?
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3answers
68 views

How to find which folder is eating space fast? [duplicate]

I am running Linux server, we using this server as a samba share drive. From yesterday suddenly, one of the share drive size getting increasing (~ 100 MB every ten min). There are too many folders and ...
-1
votes
0answers
14 views

EMFILE - too many open files solution? [duplicate]

I'm getting this error, my server has a lot of visitor now. My Vps is 4 Gb ram with 4 Cpu. Should I move to bigger server for solution? Because ulimit -n 10000 not working. I'm serving a basic ...
1
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0answers
14 views

Trying to auto-register a Nagios NSCA client

I am setting up Nagios monitoring using NSCA to report in from monitored hosts and all monitoring is using passive checks. Currently the monitored hosts each have a configuration file in the nagios ...
0
votes
0answers
9 views

ldapsearch - Get all members of a CN (nisNetgroupTriple)

I'm a bit new to using LDAP, especially non AD LDAP. We use RedHat Directory Server and was trying to do an LDAP query (filter specifically) that would retrieve all the users (and their attributes) ...
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0answers
21 views

Why some iptables DNAT rules stop working after some times until reboot?

After a while some of my iptables DNAT rules stop working. If I reboot my server, all of the rules work back. Desciption of the architecture : Tens of hosts (senders) send some UDP packets (one-way ...
0
votes
1answer
37 views

Unable to get SMART metrics from Seagate Disks on Debian OS

Referring to the question here, I too am trying to get all attributes out, as explained in this blog here. I am using Debian 6 as OS, and installed smartmontools version 6.3 using apt-get. My 6 disks ...
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votes
2answers
38 views

unable to start the bind dns service in linux

observed following errors when try to start the dns service in virtual linux pc [root@mininat ~]# service named status Redirecting to /bin/systemctl status named.service named.service - Berkeley ...
0
votes
1answer
34 views

Unable to authenticate LDAP client with PAM when pwdReset = TRUE

I have searched tons of webs and tutorials but I couldn't find an answer to my problem. I have set up OpenLDAP 2.4 on a OpenSUSE 12.3 machine with a password policy overlay. The client is a Linux ...
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0answers
22 views

How to configure HAproxy with weight and cookie stickiness?

I have two web servers. web01 and web02. they have different code on them. I want most of my connections to reach web01 and few to reach web02. I want to have cookie stickiness (not source ...
0
votes
1answer
13 views

How do you install the optional channel on RHEL version 7?

To install Puppet Master on RedHat Linux version 7, you need to install an optional channel. Can someone provide directions on how to do this? I want to install Puppet Master. I tried to install ...
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0answers
20 views

How do I measure energy consumption? [on hold]

What is a feasible way to calculate how much energy (kWh) serving a page (pageview) consumes, in average? (Or a single process) I found this article: ...
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0answers
14 views

Restrict user changing xscreensaver settings

I would like to know any solutions people came up with restricting a user from changing a system wide configuration of xscreensaver. Part of my job is managing systems which have a requirement that ...
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2answers
31 views

Redirecting to game ports based on subdomain? [on hold]

I've been browsing, looking for an answer and there does not seem to be one that works. Here's the situation: I have a web server (running Apache) that I only have access to the files for. It hosts ...
0
votes
1answer
42 views

Recomendations for this mail server setup?

EMAIL SERVER SETUP Hey, its my first time using serverfault but I hope the community can help. I am trying to build a secure email system using Linux, Postfix, Dovecot and MySQL. I have read on ...
0
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2answers
32 views

Is there a way to query all the mac addresses in a network?

I know this question was flagged "off-topic" and "non-professional", but when creating a gateway or IDS, this might be quite relevant. Also, Google finds nothing usable... There is a thing called ...
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0answers
11 views

Can't boot after intrerrupting do-release-upgrade (Mount failed for selinuxfs on /sys/fs/selinux)

From a ssh session I ran: sudo apt-get install update-manager-core sudo do-release-upgrade I went to read something else and when I returned to my ssh session, it wasn't responsive. I'm presuming ...
1
vote
1answer
45 views

Ldap+kerberos authentication through AD

Is it possible to configure ldap+kerberos authentication on a linux machine without joining it to windows domain? I have to create a pool of VMs using RHEVM with a pretty short lifetime and I do not ...
-1
votes
0answers
10 views

Installed New Relic however it is not finding individual directory applications [on hold]

I have a dedicated server running apache with php, we have 4 applications, one per directory, i installed new relic and it is reporting for 1 app through the APM however i dont understand why it is ...
0
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0answers
11 views

PageSpeed Unicode characters file name

PageSpeed unable to interpret Unicode characters on file names. My problem is that some of the image files names have Unicode characters and Nginx is able to access them. This link is accessible ...
-1
votes
0answers
32 views

Want to filter a single packet out of a TCP stream [duplicate]

I run a gameserver and I have a problem setting up a firewall rule to block an injected packet. First , this is the target data from worldserver without any injection in the exe that connects to the ...
0
votes
1answer
32 views

How to increase inodes limit in ReiserFS filesystem?

Is it possible to increase inode limit in ReiserFS without formatting the partition? Currently, the filesystem on my VPS allows me to create 489K inodes, which is not enough. The machine works as ...
0
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0answers
17 views

Mount the other half of instance store volume

I have a running c3.xlarge EC2 instance on AWS. As listed in http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#StorageOnInstanceTypes , it should provide 2 x 40GB SSD instance ...
-1
votes
1answer
60 views

How to maximize AWS Default Partition Size? (NOT a duplicate) [duplicate]

Hello Ladies and Gents, I apologize if the question isn't phrased as well as it should be; it's getting late and I've been staring at this screen for way too many hours after work. My core ...
0
votes
1answer
20 views

How do I open specific ports on Linux (an AWS instance of RHEL v. 7)?

I'm using RedHat version 7. My AWS instances are in a security group with ample permissions for inbound connectivity. I can do Yum updates. The servers can ping each other. I can transfer files ...
-2
votes
0answers
10 views

Can't get xfilesharing with Nginx to work [on hold]

Its been a week , i'm trying to get Xfilesharing script upload progress bar to works but i didn't succeed can you explain to me how to make it works with nginx upload progress model or can you tell me ...
-3
votes
1answer
42 views

iptables rules for blocking specific packets [on hold]

Im using the following iptables rule: iptables -A INPUT -p tcp -m tcp --tcp-flags PSH,ACK PSH,ACK -m length --length 52 -m state --state ESTABLISHED -j DROP It does it's job for blocking the ...
1
vote
1answer
42 views

How to make a simple script that increases a number character by 1

I have to add a single command for MANY vlans, and wondering if I can generate a simple text file somehow? Then I can simply paste the text file into the network switch and it will add the needed ...
0
votes
1answer
30 views

find and replace text from urls in csv data feed [on hold]

I want to add affiliate id say 'xyz' to the below urls Type 1: example.com/abc.html?id=White example.com/abc.html?id=Black Then urls should look like ...
0
votes
1answer
50 views

Route between local machine and a VM running on remote server

I'm trying to establish a route between my local machine (LM) and a VirtualBox VM (VM, create with Vagrant and configured with Host-only Networking) running on a remote server (RS). The setup is as ...