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

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1answer
37 views

Configure email SMTP Server on Apache2 [closed]

For a while we decided to use another Server (VServer "B") for our Mailserver. I transfered all email accounts and mailbox from VServer "A" to VServer "B". VServer "B" runs well and the clients are ...
0
votes
0answers
4 views

ST-Ericsson cg2900 driver for gps [migrated]

I'm using ST-Ericsson's chip cg2900, it contains bluetooth,fm, and gps. it's driver, which is a MFD, is explained on this discussion https://groups.google.com/forum/#!topic/linux.kernel/aD_FGvp8D3U ...
-1
votes
0answers
35 views

syslogd is attached to a remote IP address

I have a hosted server and I have 3 VM's on the server. I did a netstat -antup and noticed this: tcp 0 0 192.168.0.15:37023 73.167.119.19:21333 ESTABLISHED 4039/syslogd Does this ...
-2
votes
2answers
49 views

How do i install another version of PhP?

I would like to have installed WHMCS on my dedicated server. (I already have installed apache2) How do I install PhP 5.4 as WHMCS not support PhP 5.5? WHMCS System requirements: ...
0
votes
1answer
30 views

Understanding OOM killer logs

I run some processes inside docker container and I use memory limitation for this container. Sometimes some processes inside docker container got killed by OOM killer. I see that in syslog file: ...
0
votes
1answer
34 views

Router accessible from Windows but not from Ubuntu on the same machine

I have a Linksys E900. I can access the internet and its admin page from Windows but not even its admin page from Ubuntu (on the same dual boot machine). Like there is no communication between the ...
-1
votes
0answers
30 views

Route 53 TCP Health Monitoring with NC

We have multiple servers which are running UBUNTU 12.04 OS. We would like to create health monitoring for all of the servers. Since none of the servers are running web server I would like to create ...
0
votes
0answers
13 views

Blindly bridging wireless client with MAC NAT

This is the usual "I want to bridge wifi with ethernet" question, but I need something specific here. My Linux box has a wlan0 interface which is in station mode, with MAC aa:aa:aa:aa:aa:aa, and a ...
0
votes
0answers
12 views

POP and IMAP proxy merging multiple backends

Is there any IMAP+IMAPS + POP3+POP3S proxy available for Linux which can merge multiple backend servers for a single incoming request ? I'm wanting to set up a mail system distributed between 2 ...
1
vote
0answers
32 views

Unable to change ulimit setting [migrated]

I edited /etc/security/limits.conf to have root hard nofile 20000 root soft nofile 10000 And added session required pam_limits.so to /etc/pam.d/common-session and ...
0
votes
1answer
23 views

Remote SCP & SSFTP access to linux server denied

This situation is a bit embarrassing but I could really use some help. I took steps to secure my linux server by carrying out the following steps: created and use a different user to use in place ...
-2
votes
1answer
32 views

Best Linux server OS versions to use [closed]

I am going to get a VPS/VDS and will be hosting several websites, Some type of chat server (XMPP, Openfire or eJabberd), and possibly a Teamspeak server. The websites will be mostly PHP based with ...
2
votes
1answer
24 views

cant sftp into ubuntu server

Hey guys I've set up an openssh server, but I still cant sftp or ftp into my ubuntu server. I am always getting login failed errors for every attempt i try to make. I am running ubuntu 14.10 I ...
1
vote
1answer
68 views

NFS share problems - RPC: fragment too large: xxxxx

We have a virtual server with an NFS share that is written to by other servers. Today the NFS share became inaccessible. The syslog was full off messages like this: RPC: fragment too large: 311176 ...
0
votes
0answers
16 views

strongSwan can't access Internet

I set up a strongSwan VPN at Amazon EC2 by following this site, I can connect and login to the VPN server but I can't access the Internet. I didn't set the iptables but I have set the security group ...
0
votes
0answers
2 views

device descriptor read/64, error -71 [migrated]

I have problem with USB ports on MSI WIND laptop. I have FC17 installed and usb printer sometimes not responds. If I replug a printer in USB port - it's working. Tried to change usb cable and printer ...
0
votes
1answer
27 views

Using Cloud Servers and Firewall

I would like to ask if the configuration of "firewall rules eg. only allowing port 80.. when configuring a server instance on cloud services such as google cloud and amazon aws is securely equivalent ...
0
votes
1answer
14 views

How to prevent Avahi adding -2 to hostnames

Often (maybe 80% of the time), when I reboot a machine running Avahi, it starts using machinename-2.local as it's hostname. All the machines on my network have unique hostnames, so there is no ...
0
votes
2answers
52 views

PTR for Linux VM on Azure

I have a Linux (Ubuntu) virtual machine running on Azure and this machine runs a website that sends email to registered users. This emails are greylisted on some mailning services. After some ...
0
votes
0answers
26 views

Installing Wireshark 1.6 on CentOS 5.7

I want to install wireshark version which is higher than 1.2 since I need to analyse the iec104 packets ([only version higher than 1.2 supports this][1]). I am using CentOS 5.7 version and it only ...
1
vote
0answers
19 views

(Unexpected?) blkio controller behavior

I'm using docker 1.4.0 with lxc-1.0.6 and cgroup-lite-1.1.5 on Ubuntu 12.04. I have 3 hard disks (/dev/[sdb-sdd]) that I write to from 3 distinct containers. They have only one XFS partition, mounted ...
0
votes
0answers
22 views

CentOS 7 Crash on boot [migrated]

Getting this message attempting to boot CentOS 7 BUG: unable to handle kernel NULL pointer dereference at 000000000000009B And then a kernel panic Happens when trying to boot from the OS HDD or ...
2
votes
1answer
122 views

Would software RAID0'ing SSDs help or hinder maximization of useful CPU work throughput?

My question is in the title... here is some background: [OS is Linux.] [UPDATE: The contents of this RAID0 is redundant (sync'd from SCM). I am not worried about the increased risk of data loss.] ...
-3
votes
1answer
42 views

Mailman 404 page not found

I have configured mailman following these instructions. https://www.gnu.org/software/mailman/mailman-install/index.html I have run into this problem Problem: All Mailman web pages give a 404 File ...
1
vote
1answer
19 views

Dont allow to override php.ini values for certain headers as a root

We are having this issues in shared hosting environment. FYI: Under shared hosting environment each user can have a php.ini in their folder to override the global settings. There will be many users ...
3
votes
1answer
28 views

How can I run a shell script on a snort alert?

I have snort listening to the SPAN port of a cisco switch. I'd like to be able to add an iptables DROP rule on my webserver for specific snort alerts but having a hard time finding out exactly how to ...
0
votes
0answers
5 views

linux with KDE, disable CTRL+F9 combination key [migrated]

On my linux (ubuntu) with KDE, when i press CTRL+F9 the system shows all the opened windows as miniatures, allowing me to select one by clicking on it. Unfortunately, the very same key combination is ...
0
votes
0answers
12 views

Racoon: inherit configurations

Starting to get acquainted with ipsec-tools and racoon, I'm wondering how stage 1 configuration inheritance works. With a sample configuration like this: remote "ParentConfig" { proposal { # ...
4
votes
1answer
35 views

View full program command line arguments in OOM killer logs

Is it possible to view full program command line arguments in OOM killler logs ? What I see now in /var/log/syslog is Memory cgroup out of memory: Kill process 29187 (beam.smp) score 998 or sacrifice ...
5
votes
1answer
242 views

remount /tmp for the current shell

I have a command which is hard-coded to use /tmp as its working directory. /tmp is rather small, and the command is certain to fill it up, which will cause problems for other system processes. I ...
1
vote
1answer
25 views

nodejs server and nginx conflict

I am running a nodejs application on a digital ocean droplet and I am trying to configure nginx so that it proxies the port the port that my application is running on, This is what I have on my ...
0
votes
0answers
45 views

Mcrypt PHP extension fail on PHP 5.5 Amazon Linux

I'm installing laravel framework on my Amazon Linux Server, But once i compose and Laravel finish installing, laravel ask for Mcrypt PHP extension. then when i try to use command line to install ...
-1
votes
3answers
39 views

Command shows different results when I login as a user vs su to the user

I'm trying to run a simple command from an init.d script and I'm troubleshooting why the command doesn't work when I run it from my init.d script but works when I run it as my user. Can someone ...
0
votes
1answer
22 views

IPsec transport mode and MTU

[Similar to Right way to set the MTU of an IPsec Client (Linux/Racoon), but different in that there is no router on the responder side] I have a setup where machines in a local network need to talk ...
0
votes
0answers
22 views

Linux user in group can't cd into directory with executable permission [migrated]

(Ok, originally asked this on StackOverflow, got it downvoted with a suggestion to post on SuperUser, where I got a hint (but no luck) with using FUSE to mount media. As serverfault seems to have the ...
0
votes
1answer
42 views

Linux ZFS does not buffer writes to write buffer (SLOG/ZIL)?

When experiencing write I/O, the log column in zpool iostat -v does not show any ZIL activity, ever. This results in higher than expected wait times when writing data to disk (sometimes over 80ms ...
16
votes
4answers
524 views

Need a technique to coerce sysadmins to log the reason for accessing a prod server

My company requires that any time a user logs into a production server the reason that person logged in and the changes the user intends to make must be logged. My team wants to do this, but its easy ...
0
votes
3answers
43 views

How can I make MS Exchange think that a samba PDC is running a version of windows later than Server 2003?

I'm busy migrating my Active Directory to a Linux server (Centos 7) running Sernet's enterprise samba packackes (Version 4.1.14-SerNet-RedHat-9.el7) The Domain Controller seems to be working well for ...
0
votes
0answers
28 views

Right way to set the MTU of an IPsec Client ( Linux/Racoon)

Here's the network topology : (PC1:IPsec Client)eth0---Internet CPE---((Internet))---Internet CPE---(PC2:IPsec Server) I've set up an IPsec Internet Gateway : PC1 sends all traffic, encrypted in an ...
0
votes
0answers
8 views

Custom schema for OpenLDAP 2.4

I am new to OpenLDAP administration. My aim is to learn how to create custom schemas, and customize "my" directory server this way. I tried to add one optional attribute - ipPhone. Made a schema ...
1
vote
1answer
23 views

IPv6 record will not take for rDNS

I added the following to named.conf zone "3IP6.A.B.C.ip6.arpa" { type master; file "3IP6.A.B.C.ip6.arpa"; allow-update { none; }; }; I then created my dns zone record called 3IP6.A.B.C.ip6.arpa ...
3
votes
1answer
21 views

meaning of rx_queue_*_csum_err and rx_fifo_errors

I am trying to debug some networking issue with one server. I monitor this machine with multiple monitors and I see that at times ping error rate jumps to 5/10% I am running on ubuntu and I see that ...
0
votes
0answers
14 views

Lost space (tmpfs+aufs)

I have squashfs+aufs file system in a modified CentOS 5 "live cd" operating system (it's custom made live cd, not the one from CentOS). Something is eating space and I can't find out what (see du ...
0
votes
2answers
29 views

Display IP & TCP statistics per interface (netstat -s with interface)

Linux has the ability to display protocol statistics with netstat -s. The output looks something like: Excerpt: 7487 times unabled to send RST due to no memory TCPDSACKIgnoredOld: 817 ...
0
votes
0answers
13 views

Count apache processes by domain requested

Found this rather handy script on http://www.thingy-ma-jig.co.uk/blog/25-10-2007/the-price-of-sucess-too-many-users which I modified a little to just show a running count of the number of apache ...
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votes
0answers
20 views

How to upload local file to server through Linux terminal [migrated]

I am trying to upload local files to server by using Putty or SSH but not getting upload there. Is there any direct method to upload file from local to server from Linux terminal without using FTP ...
0
votes
0answers
21 views

Linux kernel bug w/ netns and/or Xen guest - “unregister_netdevice: waiting for lo to become free”

I am running a web crawler in a Xen-based VM (on Linode); it makes heavy use of network namespaces to control use of VPNs on a per-crawl-process basis. It's been running mostly continuously for the ...
0
votes
0answers
27 views

rsyslog: one of two ruleset-specific main queues isn't processed

there is a Debian Wheezy server with stock rsyslog 5.8.11 which aggregate messages from two hosts, putting them into files at dynamically generated paths. A while ago we came to realization that a ...
0
votes
1answer
46 views

403 Forbidden Error on Azure Linux virtual machine [closed]

I am trying to access the freshly created virtual machine on azure via winscp and putty, through putty I am able to access the VM but via winscp I get following error, Proxy Error: 403 Forbidden. I ...
0
votes
0answers
19 views

Google Apps email forward verification failure

Our corporate email accounts are handled via Google Apps, however I am attempting to setup a forwarder from Google Apps to a support desk email. For example: support@example.com is setup as an inbox ...