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

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1answer
15 views

Promiscuous mode not working with ubuntu and wireshark

I am running Ubuntu Linux and have installed wireshark on it. I can see the incoming and outgoing traffic just fine. Now I want to see the traffic from other devices which are on my LAN. So, I did: ...
1
vote
1answer
9 views

bastille linux command line pass config file with answers

I have bastille for hardening and Im using it as follows /usr/sbin/bastille -c The above starts it in interactive mode Is it possible to provide bastille linux set of answers via a file on the ...
3
votes
3answers
108 views

SSH into NAT'd servers on the same public IP address

I am trying to SSH from in office X to a few Linux boxes in office Y. The Linux boxes in office Y are behind NAT and each run on their own ports. I can successfully reach all of them through SSH, but ...
2
votes
0answers
19 views

how do I plan partitions for LUKS encryption of a CentOS 7 server?

A CentOS 7 web server needs encryption at rest. I would like to use LUKS encryption for this, but I need direction to plan how. Can I use LUKS encryption to encrypt the entire drive as one unit on a ...
0
votes
0answers
10 views

Looking for libmcrypt-devel.i686 on Centos7 for building 32bit binaries

Which yum repo am I missing, there is only libmcrypt-devel.x86_64 but no libmcrypt-devel.i686 package? yum search mcrypt libmcrypt-devel.x86_64 : Development libraries and headers for libmcrypt ...
-1
votes
0answers
51 views

Why am I limited to ~10-20 usb devices?

I am trying to hook up 27 USB device to an Intel NUC running CentOS 7 but no matter what I do the system can never see more than 20. I have tried multiple models of NUCs and even tried adding an ...
-1
votes
0answers
4 views

Ubuntu hang up before login screen [migrated]

On my Ubuntu 14.04 x64/Win 8 dual boot system (traditional via grub), Ubuntu won't run any more... The boot process seems correct, but when the login screen is about to display (Ubuntu logo shown with ...
0
votes
0answers
5 views

Maintain and version controll config- and SQL scripts

I'm looking for recomandations of handling variouse config scripts for a few databaseservers. The scrips fall into the following categories: OS Config scripts and files, such as crontab for multiple ...
0
votes
1answer
18 views

Host using Linux bond mode 1 (active/backup) connected to 2 x independent switches

I have a host using Linux bond mode 1 (active/backup) connected to 2 x independent switches. Please can someone confirm if this is possible for successful failover between NICS or do I have to ...
0
votes
2answers
18 views

Can connect to Apache 2 test page, but no to Mediawiki

I've set up Mediawiki on Centos 6 according to this article: https://www.mediawiki.org/wiki/Manual:Running_MediaWiki_on_Red_Hat_Linux Works fine locally, but when I attempt to connect from outside my ...
1
vote
0answers
8 views

openldap configuration troubles or packages bug how solve

When i configure master-master replication using this openldap packages versions, replication is working fine: openldap-2.4.23-26.res6.2.x86_64 openldap-servers-2.4.23-26.res6.2.x86_64 ...
0
votes
0answers
22 views

Tool to detect alias IPs in a network [on hold]

I'm on the lookout for a utility or tool on linux that can give me all the alias IPs used in a network. For example, if this is what I get on doing an ifconfig eth0 Link encap:Ethernet HWaddr ...
0
votes
1answer
15 views

Migrating bareos storage to another

We have a host A with bareos SD and the storage "backups". We want to migrate the data from host A to another storage (host B) temporarily. We have to reinstall the host A for performance reasons. ...
0
votes
0answers
20 views

Trying to access port 3306 (only using it locally)

I am trying to open port 3306 on my archlinux distro. I've tried multiple different iptables settings, but I can't seem to get it to work. (Locally) Here's my current iptables setting: Chain INPUT ...
0
votes
0answers
22 views

linux mv command not working on server, works on local machine

I have a linux command that I need to execute like this mv "/var/www/html/website/files/1.pdf" "/var/www/html/website/files/complete/2015.pdf" the command works flawlessly on my local machine, and it ...
-3
votes
1answer
33 views

Empty /var folder on FTP client even though there are files in there

I recently created a VPS server with OVH (running CentOS 7). I have installed the basic LAMP stack (without the L), as well as SSH and FTP, on a fresh install of the VPS. The FTP is what I am having ...
1
vote
0answers
27 views

Automatically change remote user with sshfs

I have two remote servers, foo and bar. On both servers I have a user git (with different uid and gid). Both servers are running Debian distributions. Both servers have their each others' root ssh ...
0
votes
0answers
11 views

Block connection through proxy in firewall [duplicate]

I'm getting some 'ddos' on my Linux machine (ubuntu 14.04 64bit). I have a lot of connections from IP which are proxy IP's (like tor), on specific port. Question: How to block all proxy connections ...
1
vote
1answer
22 views

ssh from Server to Client through PPTP tunnel

I was able to set up a small PPTP VPN with a Server and two clients. All machines run Ubuntu 14.04. The connection works great and is reliable. I can ping all machines from everywhere. Also HTTP ...
0
votes
0answers
14 views

Is it possible to derive the command line arguments for mondoarchive after running it manually?

I've recently found out about and then run mondoarchive for the first time on a server, I would like to make this backup job in to a cron job to run regular backups. After running the backup I ...
2
votes
1answer
20 views

Time since last activity of a connected network neighbor

I am using a Fedora Linux server as a gateway. When I check my ARP cache, I have the following list of records, > Address HWtype HWaddress Flags Mask > ...
0
votes
0answers
6 views

disable simple paged results control support

Trying to make my client, originally developed for OpenLDAP, also compatible with Oracle DSEE. Oracle DSEE is missing support for simple paged results, which the client code uses. Yet, ODSEE supports ...
1
vote
2answers
33 views

Get a file's ctime, atime, mtime and extended attributes

I would like to display a file's ctime, mtime and atime along with whether it has extended attributes or not. There are 2 commands that can do this but I have not been able to combine them into a ...
0
votes
0answers
10 views

GluserFS - data out of sync

I have a glusterFS master - slave geo-replication. The data is out of sync and I would like to do a full sync (without having to do the full copy again -> 6.4 TB over network). The glusterFS version ...
2
votes
1answer
51 views

Website sometimes takes long time to load

I am running a LAMP system with Ubuntu 14.04. I have 4 cores and 8GB Ram on my server The problem is that when I connect to my website after idle period( 2-3 hours or more) the it takes lot of time ...
1
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0answers
23 views

How to configure HW, OS, network for virtualization with VMDq and SR-IOV features [on hold]

I have: SUN X4100 M2 Intel Ethernet Adapter E1G42ET (VMDq and SR-IOV supported) Linux Ubuntu 14.04 Server (host machine) May setup 15 KVM as hypervisor I want some virtual guest machines (linux) ...
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votes
0answers
26 views

Found someone hacking in my LAMP server centos 7 using GET request with WGET

This is a bit confusing and I think I was hit by a shellshock, by the way I'm not a sysadmin and only know a little bit about handling a linux. I'm running a website (LAMP) and hosting it in Digital ...
0
votes
1answer
23 views

Switching to Java 1.8 on openSUSE 13.2

I removed the installed version of Java 1.7 using: sudo zypper remove -y java-1_7_0-openjdk java-1_7_0-openjdk-devel java-1_7_0-openjdk-plugin Then installed Java 1.8: sudo zypper install -y ...
2
votes
0answers
17 views

vpn session over http or https [on hold]

I can only access http://site.example.com or https://site.example.com (running linux centos behind ddwrt router) the http firewall allows those virtualhostnames to connect to the client (me) but not ...
0
votes
1answer
32 views

How can i distribute a software package to workstations on the same network?

I want to distribute a software package from my Linux server automatically to the windows workstations on the network. I'm doing it manually at the moment, and I want to do it automatically from the ...
0
votes
1answer
18 views

Config differents external proxy to every VM with iptables

I have a virtualization server with one IP and 5 VM. To get internet access and ssh access in every VM I do this in -------------/etc/network/interfaces------- auto vmbr2 iface vmbr2 inet static ...
0
votes
1answer
23 views

Linux PCs sending “ICMP udp port unreachable” to DNS server

So digging around in my syslog I have been noticing a lot of ICMP packets being flagged by our ASAs: %ASA-4-313005: No matching connection for ICMP error message: icmp src Internet:x.x.21.122 dst ...
3
votes
2answers
40 views

Nginx, log referrers from certain domain to separate log file

I have my nginx setup to block certain referers like so: if ($http_referer ~* (site_name) ) { return 403; } This works fine, however I'd like to also log the blocked referrer to a separate file. ...
3
votes
2answers
23 views

StartSSL cert doesn't work with Dovecot/OpenSMTPD

I've an issue with my StartSSL certificate. When I try to use it to activate SSL encryption on Dovecot, I get the following error in my log when a client attempt a connection to the imap server : ...
0
votes
0answers
9 views

PJSUA playing wave file on state “EARLY”

I'm trying to create a system, where a wave file is generated and then some of our employees are called by pjsua and the wave file is played to them. Everything seems fine, I am running the following ...
0
votes
0answers
22 views

Sudoers, allow user to use root alias

Actually, my root have to aliases: alias unpool='/path/to/my/scripts/unpool.sh' alias pool='/path/to/my/scripts/pool.sh' I have the same for my user in ~/.bashrc I defined my /etc/sudoers.d/user ...
0
votes
0answers
25 views

How to raise max no of file descriptors for daemons running on Debian Jessie?

I'm playing with pgBouncer as a connection pooling system for PostgreSQL. My system is a 12-core with 64GB RAM and 1Gbps network interface running Debian 8.1. Now I want to raise the limit for open ...
0
votes
0answers
26 views

Instance keep losing status check

This is really scratching my heads off, not sure one of our instance running via AMI 'CentOS 7 -x86_64- with Updates HVM-7 2014-09-29' is keep losing its status check and the machine becomes ...
-3
votes
0answers
46 views

Linux based security for companies - how much do you do? [on hold]

So if your company is mostly Unix/Linux based on the server side (but mostly Windows on the client side), how do you go about securing the network and all workstations? I assume that you have a ...
0
votes
1answer
16 views

Why does bind allow TTL to be set record by records if different TTLs are not allowed within the same record set

Why does bind allow TTL to be set record by records if different TTLs are not allowed within the same record set? If i set the zone ttl using: $TTL 39600 And then set a record TTL using: @ ...
-1
votes
0answers
22 views

Error deployment of project via deploy.sh script [on hold]

I need help. I have script for deployment my project on Ruby. #!/bin/sh if [ $# -eq 0 ]; then echo "Usage:" echo " ./deploy.sh some_stage_name" else rvm use `cat .ruby-version`@`if [ ...
-1
votes
0answers
20 views

Centos 5.11 and Redis server 2.2

I am in the process of installing redis onto my server, I have the installation nearly complete (I can start up an instance of redis), but I get the following message, 9180] 26 Aug 01:19:39 * Server ...
0
votes
0answers
12 views

Fatal Error While running Tomcat application in Ubuntu (Oracle Virtual Box)

In windows 7 laptop, I have installed oracle virtual box there i have installed ubuntu 12.04 server The following is the error while starting the tomcat application # # A fatal error has been ...
1
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0answers
29 views

Directory permissions for user account linux

I am setting up a shared folder between several users on a Amazon AMI (details at the bottom). I am trying to get the folder shared with one user in particular which isnt working. My idea was to ...
2
votes
1answer
51 views

Connections Timed Out - Tomcat

I'm having a problem with Tomcat: On a clean install, connecting to [ip-address]:8080 times out. I have seen many similar questions and tried basically everything there, with no success. But here is ...
1
vote
0answers
31 views

High CPU Usage Top isn't Showing Processes

Hey I'm having a weird issue that I'm having some difficulty diagnosing. I have a VM that went down due to high CPU usage today. The websites on this VM are very low traffic, so I knew something ...
-2
votes
1answer
25 views

Best Practice for OS Patching for Ubuntu on AWS.

I was wondering if someone can help me by sharing knowledge on Ubuntu OS patching over AWS. I tried to find it on Ubuntu documentation but my bad,I didn't get any relevant post there. Wondering if ...
1
vote
1answer
21 views

inactive option not working for pam_lastlog.so

I'm trying to set up my system to lock out inactive users after 10 days. I'm using CentOS 6.x, and looking at RHEL manual, this is what I found: To lock out an account after 10 days of inactivity, ...
1
vote
0answers
38 views

Samba shares don't work when mounted via host names from /etc/hosts

I have /etc/hosts file with this line 10.1.17.123 SAMBAWINSERVER I am trying to mount samba shares referencing server by name in the hosts file. I tried to mount it via regular mount command or ...
1
vote
1answer
35 views

Force PCIe SSD to be /dev/sdb on linux install

Is there any options to force the PCIe SSD during install to be not /dev/sda? I was hoping to reserve the SSD to be limited to be only /var but the grub loader fails each time when I try to set the ...