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

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-2
votes
2answers
37 views

Tinyproxy to allow all incoming requests [closed]

I recently set up the Tinyproxy on a VPS server, I am trying to access it from a external IP, but it doesn't allow me, come up with HTTP/403 Error Code. I have already configured the tinyproxy.conf ...
1
vote
2answers
43 views

Local DNS fails when another interface is connected

I have a LAN with a Linux server running BIND for addressing of local computers. When a workstation is connected to the local network (where there is no Internet access), I can successfully address ...
0
votes
0answers
30 views

Add routes for VPN on CentOS

I am a completely new in server routing and VPN. I have a CentOS 6 server with 2 interfaces running (eth0, eth1) and current routes like this # route Kernel IP routing table Destination Gateway ...
0
votes
1answer
54 views

Install php 5.5 on centos with puppet

I am trying to get a more recent version of php and mysql on a centos 6.5 x64 box. I added the yum repos epel and remi and have the remi as a dependency for php but it will not install. The error I ...
2
votes
3answers
48 views

Same SMTP server, Microsoft Exchange reaches recipient but sendmail does not

I debated the question title for a while but I think this about explains the question. Feel free to edit it if someone has a better title. Environment: Microsoft Exchange 2010 and sendmail. Problem ...
2
votes
1answer
46 views

Why don't my domain transitions don't occur when the application binary is outside of the stardard binary directories?

I'm trying to set up a custom SELinux policy, but I'm having trouble getting the domain transitions to occur when the application binary is outside of the standard binary directories such as /bin, ...
1
vote
1answer
27 views

Execute a script before fsstab is read

For a netboot cluster, I'm creating a CentOS 6.5 root disk. The goal is to mount / read-only over NFS, and various other folders, such as /var/log, on the local disk. Here's my first idea: On boot, ...
0
votes
0answers
5 views

lvm mirror doesn't resync the logical volulme

I trying to restore one lvm mirror using the old metadata, for restore the config i'm using the command vgcfgrestore -f redhat vgmirror but after the restore of the old metadata, the resync ...
-2
votes
1answer
49 views

DNS hierarchy with bind [closed]

I'm doing a project from class in which I want to simulate a dns hierarchy that works as the global internet dns hierarchy. The structure is like this: Hierarchy So all the requests will be sent to ...
1
vote
2answers
72 views

What is the difference between RHEL and GA release?

Can someone explain the difference between the RHEL and GA releases available on AWS? RHEL costs are about double those of the GA release and I'm wondering what that extra cost includes.
1
vote
2answers
62 views

ZFS RAID0 pool without redundancy

I created a ZFS pool on Ubuntu 14.04 without specifiying RAID or redundancy options, wrote some data to it, rebooted the machine and the pool is no longer available (UNAVAIL). I don't have the exact ...
1
vote
0answers
19 views

Two port PCI serial card. One port can only set baud rate once

I have a new PCI serial card, being used on a Ubuntu 14.04 box. It's serial ports show up as /dev/ttyS4 and /dev/ttyS5. $ dmesg | grep ttyS [ 0.732690] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, ...
-2
votes
2answers
25 views

Deleting file in tar mounted with archivemount?

archivemount allows rw-mounting tar archives. What happens when I delete a file? Is it actually removed from the tar archive? Is a delete flag set? If the file is actually removed, then I assume the ...
0
votes
1answer
32 views

Ubuntu Apache2 server appears to reject a certain domain name

I am using a Apache2 installed on Ubuntu 13.04 Raring Ringtail to host a small wallpapers website. Originally I used osgwallpapers.servepics.com from no-ip.com for my domain name. Now I'm trying to ...
0
votes
1answer
15 views

Fixing Apache Struts XSS vulnerability

A recent network scan revealed the following vulnerability: Apache Struts s:a / s:url Tag href Element XSS. Here is a link with more info about this vulnerability: http://osvdb.org/show/osvdb/54122 I ...
1
vote
1answer
29 views

Minicom Successive Address Dialing

I've been tasked with writing a script for the minicom connection utility that tests a series of numbers in its dialing directory, I have found the baked in scripting language to be near useless. I've ...
-5
votes
1answer
55 views

How much harm can a non-root user cause? [closed]

Let's say you add a user to your Linux server, and allow the user to connect over SSH with full command-line access, but do not add him to the list of sudoers. What sort of security vulnerabilities ...
0
votes
1answer
35 views

no package ipset available (centos EL5 x86_64)

I want to install ipset, but none of my repos seem to have it when I run yum install ipset [root@ora1 /]# cd /etc/yum.repos.d/ [root@ora1 yum.repos.d]# ls CentOS-Base.repo CentOS-Debuginfo.repo ...
0
votes
0answers
26 views

Can't mount bin/iso image from AWS import/export service

A client sent a 2 TB drive to AWSs import/export service; AWS put it in an S3 bucket in two chunks. I catted the two chunks together as an iso file, and tried to mount it, using the directions listed ...
0
votes
2answers
20 views

Catch-all email with specific exceptions on a domain [closed]

I want to set up catch-all email on a domain, but also retain the ability to except certain email accounts, such that, if an email is sent to an excepted account, it is bounced back with an "account ...
-1
votes
1answer
56 views

Postfix + Mailq: Mailbox Full no bounce

I have a mail server and alot of clients. Some of my clients have many email accounts and dont use some of them. So, I have alot of mailboxes full, which receives dozens of emails every day. So, my ...
-2
votes
1answer
46 views

Upgrade vmware tools issue

I try to upgrade vmware tools on a VM (Red hat Enterprise Linux Server 6.1) the package I try to install is VMwareTools-8.6.10-913593.tar.gz. In a step of installation I get this error : No X ...
-3
votes
0answers
11 views

Skype no screen sharing after upgrage [migrated]

After upgrade Skype to ver 4.3.0.37 on my Linux PC, it is not possible to share screen during conversation. Even sharing options are greyed or does not work. I upgrade using rpm file. But I try ...
1
vote
1answer
35 views

Exchange New-MailboxExportRequest PST backup to Linux server share

I'm putting together a backup script for an MS Exchange server. It uses New-MailboxExportRequest to export the Mailbox as PST files. However, it doesn't appear possible to write these PSTs to a Linux ...
1
vote
0answers
41 views

Ping not working from tap interface attached to bridge interface with ip on same subnet as that of bridge to outside

My requirement is to create a multiple tap interfaces, each with ip address on same subnet. I tried this by creating a bridge br0 (192.168.1.199) ...
0
votes
1answer
49 views

Apache difference between VirtualHost with ip and without

In some apache file (site-enabled) you can see : <VirtualHost 172.20.30.40:80> DocumentRoot /www/example1 ServerName www.example.com </VirtualHost> Another : <VirtualHost ...
1
vote
1answer
56 views

Do I need to resign/regen a cert when moving IPs?

Are these errors related to moving a site to a new IP and keeping the same SSL CERT? Will I need to regen/sign to fix this? [Sun Jun 22 07:13:11.054280 2014] [mpm_worker:notice] [pid 2775:tid ...
4
votes
3answers
266 views

Understanding the different directory sizes

When comparing root@debian:~# du -s /backup/test1/ 5605364 /backup/test1/ two directories with du, root@debian:/etc/init.d# du -s /data/test1/ 5605360 /data/test1/ du tells me that there is a ...
1
vote
3answers
296 views

Error installing new OpenVZ kernel

Seem to have an error when updating the kernel on a OpenVZ server when running "yum update" im getting the below Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ...
0
votes
0answers
25 views

Linux bash command to shutdown Windows 8 machine with net Samba [migrated]

LS, I have a RasPi for home automation, and I want to be able to shutdown my Windows 8.1 workstation using a bash command. Of course I've google before asking here. And I found; net rpc shutdown ...
0
votes
3answers
56 views

CentOS/Linux Block External Port

Suppose I have an internal service running on port 7676, how would I (On CentOS) block port 7676 from external sources, so that it can only be accessed locally - AKA 127.0.0.1, not using, for example, ...
0
votes
1answer
24 views

Where can I find a previously installed application in linux? Preparing for an upgrade

I'm currently trying to update my duo_security application that I installed 4 years ago. I'm following the instructions, but I hit a roadblock when it says: Note: You'll need to use the same --prefix ...
0
votes
1answer
53 views

Ubuntu server Cannot write to '' (No space left on device) [duplicate]

I'm running a Ubuntu server and this evening since rebooting it I am not getting the error message Cannot write to '' (No space left on device). Earlier I did unzip a large directory in to /root ...
1
vote
1answer
57 views

Why does Fedora 20 still deny access to home directories after enabling SELinux httpd_read_user_content and setting files to httpd_user_content_t?

On my Fedora 20, I've learned that to allow write access to files by processes like PHP via Apache, the process owner, which is in my case apache, must have write permissions to the files. Also, since ...
0
votes
1answer
30 views

Too many emails from munin

I have recently taken the time to look into munin and fix some of the plugins that wore not working. Among them yum. Now for the last few days there have been a few updates released for my centos and ...
1
vote
0answers
49 views

How to set the spin down timeout on WD Green HDDs [migrated]

My internal WD20EARS disk does not spin down autoamtically. I tried hdparm -S 1 (5 seconds), but nothing happens. I disabled the IntelliPower headparking with wdidle3 from the Ultimate Boot CD. hdparm ...
1
vote
0answers
15 views

Qdisc pfifo_fast in linux and IP Precedence

Im using a embedded Linux distribution for a router system. My goal is to prioritize some traffic with minimum delay. I have a WAN interface with a default pfifo_fast qdisc attached to it. I have read ...
3
votes
0answers
24 views

linux tc htb bandwidth ceil being ignored and giving improper results

I'm setting up some htb packet queues like so: tc qdisc add dev eth0 root handle 10: htb tc qdisc add dev eth1 root handle 10: htb tc class add dev eth0 parent 10: classid 10:1012 htb rate 750kbps ...
0
votes
0answers
10 views

openSUSE encrypted root over RAID, given Yast doesn't support encrypted root?

This is for a fresh install of 13.1 I'll be making. Four drives in RAID10 need to be on the bottom. I'd rather the RAID be software, MD, rather than hardware, though I'd use hardware RAID if all else ...
1
vote
1answer
76 views

Securely copying files between two remote servers

I am trying to copy (scp) files from one remote server to another remote server. The remote servers are running Ubuntu and are using SSH authentication. The servers synchronise with LDAP, and all ...
0
votes
0answers
19 views

Best open-source solution for SNMP monitoring of network usage? [duplicate]

What are the best packages (2014) for SNMP monitoring in linux? Is cacti still the best option?
1
vote
4answers
97 views

Recording network traffic peak per second every 5 Minutes

I would like to monitor my peak network usages. I already use munin to monitor network traffic in a 5 minute sample. But as we have lot of peaks of http traffic which lasts only a few seconds I want ...
1
vote
0answers
17 views

Receive-side NIC teaming using LACP for use with NFS

I have a server with a 10G connection to a central switch. One NFS client has (2) gigabit NICS connected to the same switch. I'd like the NFS client to receive bandwidth of 2Gbps from the 10G server ...
1
vote
0answers
14 views

Subversion svn+ssh speedup needed - can we reduce per-connection read timeout?

I have a series of scripts that are doing many svn operations and taking too long and we're not sure why. For example svn switch svn+ssh://srv/repo/... ... This consistently takes about 1.1 ...
0
votes
1answer
19 views

Using pppd with a serial port?

I just need to send/receive a messages through a unix-socket with PPP. But at first I want to launch the pppd with an usual serial port to make sure I know how it works. As I see, if I bind a pppd to ...
0
votes
0answers
40 views

Linux routing: How to allow a device inside private network to connect a public IP over an unknown network?

Consider following network topology: ---------- ---- (my network) ---- | Device 1 | (.101) | 192.168.191.0/24 | ---------- | | ...
1
vote
1answer
35 views

Facing NFS file transfer issue, file gets truncated

I am getting this error while transferring files using NFS, and the file size is getting truncated Can anyone give me a hint? We tried 2GB, and the file gets truncated at 400 MB. Jun 20 11:09:22 ...
0
votes
0answers
45 views

Multiple Reverse SSH Tunnels using Single Port

I am able to accept reverse SSH connections from multiple remote systems on a single server using a port for each connection: Remote A: ssh -fN -R5000:localhost:22 user@server-ip -p22 Remote B: ssh ...
-3
votes
0answers
11 views

Redirecting locally generated IP multicast over a GRE interface [duplicate]

On a linux box, I want to redirect locally-originating IP multicast traffic (OSPF hello) over a gre tunnel interface. How can I do this using iptables rules?
1
vote
1answer
22 views

First Boot Script for variety of platforms

I'd like to make a firstboot script for CentOS 5/6 and Ubuntu 12.04/12.10/14.04. If possible, I'd like to use one method to trigger this script to run. From what I can tell, this rules out ...