Newest Questions

Q&A for system and network administrators

systemd timer fails to start (Invalid argument) when using UTC time

Here is my timer: [Unit] Description=Do whatever [Timer] OnCalendar=daily UTC [Install] WantedBy=timers.target It fails to start with the following error: Failed to start mytimer.timer: Unit ...

Convenient portable hardware for temporary physical access? [on hold]

I work with industrial PCs built into large pieces of machinery. Most of our deployment process happens over the network, but the first steps need physical monitor/keyboard access to set some BIOS ...

Graylog Lucene Search Not Working Properly?

Our events are tagged in a "tags" field like: Windows Event Logs Windows Event Logs, Windows Security Event Windows Event Logs, Active Directory MacOSX Firewall I want to search for anything tagged ...

AutoSSL and WordPress Multisite, loading incorrect certificates [on hold]

So this has been bothering me for weeks. We've got a WordPress Multisite installation, and with the push to SSL everything, we've taken advantage of cPanel's "AutoSSL" which I believe uses Let's ...

ERR_SSL_PROTOCOL_ERROR using InstantWP to install my livesite to localhost [migrated]

I'm trying to install my site https://citruskill.com/ to my desktop so I can work on it locally. I tried using WAMP, but had errors, and did every single thing I could to make it work but no dice. ...

Cloudflare data privacy and policy?

I am concern about cloudflare data privacy policy. On their site, it says Cloudflare may aggregate data we acquire about our users and the visitors to their websites. For example, we may ...

Haproxy ldap session persistance?

Is it possible to implement session stickiness in haproxy when using it to load balance to ldap servers? Example: I have an lb that load balances to two backend ldap servers. This works fine for ...

AWS CodePipeline output file empty

To deploy my Laravel framework to Docker containers on AWS, I created a CodePipeline in AWS with three basic steps: 1) Get source from Github (Output artifact = MyApp) 2) Use AWS CodeBuild (...

Audit Logon Events not turned on but still generates 4624 events

Why would a Windows Server still generates 4624 events (An account was successfully logged on) in the Security log even though the Audit Policy's Audit logon events value is set to No auditing.

choosing which webapps to start on tomcat8 startup

I have an apache tomcat8 webserver that runs some webapps. I have a root webapp that installs the other webapps. On fresh install I have only the root webapp, but if I restart the server all the ...

Problems with token expired in Bluemix

I have a recurrent problem when try create a container's group: The exact message is: INFO: 2017/03/23 15:50:19 Auth Error: { "code": "IC5029E", "description": "Your access token is expired. ...

Server DNS Resolve issue

So I'm currently using VMware Pro 12 for the purpose of a lab environment. The problem I have now is that on my domain controller I can't ping my client, although the client is configured properly. ...

Squid cache not starting in Ubuntu 16.04.2 LTS

I'm trying to start Squid (3.5.12) like this root@ob:/etc/squid# /etc/init.d/squid start [ ok ] Starting squid (via systemctl): squid.service. but only one line appears in cache.log. Nothing else. ...

Script does not work in cron [duplicate]

i have written script, that check process avaliability. So. The text of my script. #!/bin/bash export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" tool="pidof" service="nginx"...

Browser switching between kerberos and NTLM - weird?

I have been using Authpage to try to diagnose an authentication issue that is affecting part of an application that is hosted in IIS 8.5. The AuthPage behaviour is that when I open IE and browse to ...

Securing CentOS traffic [on hold]

@Moderators: First of all, please don't move this thread to already answered section. I want to encrypt traffic on my Linux system. All incoming and outgoing network traffic should be encrypted using ...

How to monitor logs via Google Cloud agent for occurrence of error?

Basically I'm monitoring the php-fpm error.log file with a custom config: <source> type tail format none path /var/log/php-fpm/error.log pos_file /var/lib/google-fluentd/pos/php-fpm-...

Configuring roundcube with SSL for SMTP and IMAP

I have tried setting up SMTP and IMAP with a variety of settings and am unable to get anything working on my server. I have an SSL certificate on the server and can connect to it through https fine. ...

Systemd not starting an app from wrapper

I've created a simple wrapper for Elasticsearch and a systemd service file, and for some reason I am not able to start Elasticsearch from systemd, however I'm able to do so from the wrapper itself. ...

gCloud with internal load balancing and Windows

I am trying to setup internal load balancing on Google Cloud for windows backend servers but... When I add internal LB to instance group, all windows server in that instance group get one additional ...

(Open)VPN tunnel with /64 to small network

I have access to a VPS with a /64 IPv6 range. I'd like to give IPv6 connectivity to a small office through this tunnel. I have linux on the VPS and on a linux box on the network at this office. I'm ...

Block googlebot on a specific page using nginx

We're currently being crawled at a greater rate than we can handle. I can't seem to get nginx blocking the googlebot server { location /ajax/sse.php { if ($http_user_agent ~* "Mozilla/5....

Different Azure portal displays?

I am new to Azure. I started a free account and now updated to Pay-As-You-Go plan. It looks there are two different Azure platforms. Some of my Azure resources on one and some on the other. For ...

Do DNS queries always travel over UDP?

I've spent a bit of time researching this topic and can't seem to find an exact answer, so I'm fairly confident it's not a duplicate, and while my question is based on a security need, I think it's ...

Lustre: inode/files quota: dependent on striping?

My understanding of the Lustre file system is that every file uses one inode on a metadata target (MDT), and then one inode per stripe on the object storage targets (OSTs). My question is, which of ...

Can't start a Windows Service after installation

So I installed a brand new service that helps hardware (like a barcode scanner) send data it receives into a Microsoft SQL database. Normally I am able to install this hardware service with little to ...

Link down on pushing multicast through mikrotik RB2011UiAS-RM

I am trying to simply push multicast traffic through the second switch of the router... for now I connected swtich 2 port 8 to my ISP router iPTV port and port9 to SagemonUHD88 IPTV decoder. I set ...

Restart docker containers without restarting reverse proxy

My containers can't restart properly if I don't take down the reverse proxy (nginx) before. These logs show the sequence of events: 2017-03-23 19:50:29 140019590191872 [Note] mysqld: Shutdown ...

ovh windows server vps upgrade, disk still 25 gb

I upgraded my vps in OVH. The upgrade includes a memory doubling from 2 to 4, and doubling disk space from 25 to 50. Memory is indeed growing, but the disk remains oh size - I mean physicall size in ...

Remove All Query Params from nginx Reverse Proxy Request [on hold]

location /users { proxy_pass 'http://upstream:8080/a/longer/url/'; } I want the above request to /users?search=bob to resolve to /a/longer/url/. I've tried rewrites and a bunch of ...

Correct basic mail DNS records

I have some websites on AWS (Windows Server 2012 R2), and I'm trying setup a mail server. I have installed hMailServer, and in the guide say I need configure the DNS records for mail. I never needed ...

Getting User group members using Powershell

I got a script Invoke-Command {net localgroup administrators} which only work in server 2012 & not in server 2008R2, getting error as mentioned below, even though "WinRM already is set up to ...

Multiple nameservers for multiple dedicated servers on a single domain

The first dedicated server I setup two custom nameserver at registrar to server 1 ips and set the whole domain to those two namservers. (lets just say my domain is server.com) ns1.server.com ns2....

How does URL redirection affect DDoS attacks?

We're moving our company website to a new domain and a new hosting provider as part of a re-branding project. We intend to create completely new content for the new website, remove all content from ...

How can I prevent Exim from send non-delivery notifications when mail is rejected by a specific server?

I've got an edge mail server that I'm trying to evaluate a commercial spam filtering product with. The current setup: Exim is the edge mail server. Mail received by the mail server is forked to the ...

How to allow users to login remotely when already granted right through GPO

I have a server running Windows Server 2008 R2 as a domain controller. I have a number of Windows 7 x64 Professional machines. I am trying to set Remote Desktop privileges to all users to login to all ...

Windows event logs have null entries

I was looking through Windows event logs and found that there are a large amount of event logs with: [Type]="(null)" [User]="(null)" [Message]="null" in the log. For example, Event type 4740 should ...

SSL Certificate Not Working

I try to make a ssl certifikate on apache. I wrote in my httpd.conf <VirtualHost 167.114.130.5:443> DocumentRoot /home/vidastro/www ServerName www.vidastro.com SSLEngine on SSLCertificateFile ...

VMWare Workstation Pro Won't Detect Alfa AWUS036H [on hold]

I've just installed a brand new VMware workstation 12.5.4 with a Kali linux VM. The host is running a brand new Arch Linux. I can sucessfully bring the wireless card up in the host using ip link ...

Am I ruining my storage performance?

I need to expand the storage for my small business's dell R630 with a windows file server VM. We have a set of 5 matching brand new hard drives (3.5in 5400rpm wd red 6TB) that we would like to use. I ...

what's the differene between .ebextensions and .elasticbeanstalk folders

I deployed a Rails app to AWS with EB. I'm now setting up https and AWS doc tells to put the config file in the .ebextensions folder in my app root. I also have there a .elasticbeanstalk folder, ...

Limit download size [on hold]

Is there a way to limit the downloading total amount of data through a network interface? Can tc do it? Or we have to develop our own script to limit total download size? If so which language is most ...

Apache2 on Ubuntu 16.04: Default configuration for FileETag

I have a question regarding the ETag configuration with Apache 2.4. The Apache documentation (https://httpd.apache.org/docs/2.4/en/mod/core.html#fileetag) states that the default value for FileETag is ...

Reliability of USB cable

How reliable(that it will remain connected) is a USB cable, that is connected all the time with possible agitation/vibration from external environment? Any ways to keep it mounted all the time ...

use /etc/hosts entry in ssh config with proxycommand

I am using corkscrew to ssh tunnel through a corporate HTTP proxy. I would like host names to be resolved using /etc/hosts so that I do not have to put explicit IP addresses in the .ssh/config file. ...

How to mention # symbol in apache proxy pass?

I have apache server configured on ubuntu server. I wanted to know how can I mention # symbol in my proxy pass address like I just wanted to add proxy pass lines like this: ProxyPass / http://:8080/...

Get local User group members - Powershell

$Output = 'C:\temp\Result.txt' $Servers = Get-Content 'C:\temp\ServerNames.txt' $ScriptBlock = { $Groups = Get-WmiObject Win32_GroupUser -ComputerName $Servers $LocalAdmins = $Groups | Where ...

Is it good practice to cut power to an external backup drive when not in use?

The network I have just inherited has a single home-type (Seagate) NAS drive which is used as a data backup each night at midnight. As this company experienced a virus attack recently (before my ...

Why is Apache returning characters “MZ” for any .lc URLs

I have just installed Apache 2.4 on Windows Server 2016 Datacenter (AWS EC2 instance). Web server seems to be working fine, I can access 'http://localhost/' and get the 'It Works!' page. Location: C:\...

Static route to internet gateway on different local subnet. Possible?

I am relatively new to this community and am hopeful that somebody can help me with my problem. My network setup is the following Router, IP 192.168.1.1, two interfaces: wlan1 Subnet: 192.168.1.0 ...
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