Additional IP price is $ 3

Next, to set up an alternate IP address in Debian and Ubuntu, follow these steps:

Log into your VPS using SSH. As the root user, open the /etc/network/interfaces file in your preferred text editor. Then add the following text to the file:

# The primary network interface
auto eth0:0
iface eth0:0 inet static
address xxx.xxx.xxx.xxx
netmask 255.255.255.0

Next, replace xxx.xxx.xxx.xxx with the new IP address that you want to add to your VPS. Then save the changes in the same /etc/network/interfaces file and then exit your text editor. To restart the network interfaces on your server, you need to run the command:

ifdown -a --exclude = lo; ifup -a --exclude = lo

To verify that the procedure completed successfully, enter the following command:

ifconfig

The new IP address must be associated with interface eth0.

The first step is to go to your account, log in and go to the orders page. If you do not currently have active virtual server services, you can familiarize yourself with tariff plans and order a suitable server here.

Next, you need to find the required server and go to the “OS” section

By clicking on this section, you will see a link to your own VMmanager. Then you need to go to her

After you have opened the VMmanager section, you should go to the “IP Addresses” section. If you have additional IPv4 addresses, then you will be shown there all the currently available IPv4. At the moment, the interface IPv4 address will be changed.

After that, click on the required IPv4 address and click on “Edit“

By default, the following entry is set on all VPS

vps.hostry.com

You need to enter your desired PTR record value in the “Domain” line, then click on “OK“

In order to clearly show, the entry has been changed

example.hostry.com

After 3 minutes, the PTR record was successfully changed. You can check it at the link

https://dnschecker.org/

You can also check this with the following command:

nslookup -type=PTR your _IP_address

Creating an SSH key on Linux

First, open the terminal (command line) app, then run the following command to generate a 4096 bit SSH key:

1. Login into your virtual machine via VNC or PuTTY or via SSH.
2. Insert into the command line the following command:
   ssh-keygen -b 4096
   The command will output the following result and prompt you to save the newly created key.
3. In order to view the generated SSH-key, input the following command:
   cat .ssh/id_rsa.pub

PuTTY is a popular SSH client for Windows. You can use it to remotely connect to a Linux server. Its companion software, PuTTYgen, can be used to create SSH keys.
First, download the PuTTYgen software, which we will use to generate the key.
Next, run the software and select RSA as the key type, enter 4096 as the number of bits to generate, and then click the GENERATE button.

Click the Save private key button and select a secure location to keep it. You can name your key whatever you’d like, and the extension .ppk will be automatically added.

Insert your SSH key into VM-manager panel.

At first, please login into your HOSTRY member area. Then access your VM-manager account:

Then go the SSH Keys section. Click on the SSH keys Add icon

Insert your public key into the text box and give it a name, then click on a Save button:

Done. The public key is added!

If You Have a VPS

Go to the list of your orders and select the VPS on which you need to install WordPress

Then, as you chose your VPS, you must go to the CMS

In the CMS section, you must select WORDPRESS and enter your domain name. After that, you can enter «СREATE»

If You Didn’t Have any VPS

If you have no active vps in orders, you can order them here: https://hostry.com/products/vps/

You need to choose a tariff plan (example: NL 30GB SSD 5$)that is convenient for you, designate a Payment period, write your Hostname, choose an Operating System (OS), then click on the «CMS»

 In the CMS section, you must select WORDPRESS and enter your domain name there and «СREATE»

SpamAssasin installation process

In order to install this program, we recommend the following command:

apt-get install spamassassin spamc -y

The next step is to install the user and disable the login.

adduser spamassasin --disabled-login

Configuring SpamAssasin

Assign spamassassin to the SpamAssassin user account. This is followed by editing the settings

nano /etc/default/spamassassin

It is necessary to find in this directory ENABLED = 1 Uncomment it by removing the # and changing the value from 1 to 0.

ENABLED=0

Then you need to find the line OPTIONS = “- create-prefs –max-children 5 –helper-home-dir” and make changes. They must include a spamassassin account

OPTIONS="--create-prefs --max-children 5 --username spamassassin --helper-home-dir /home/spamassassin/ -s /home/spamassassin/spamassassin.log"

Then you need to find the line CRON = 0 and make the same changes as before to get CRON = 1. Then save the file. Back up your local SpamAssassin configuration file.

mv /etc/spamassassin/local.cf  /etc/spamassassin/local.cf.bk

Then you need to create a new local SpamAssassin configuration file.

nano /etc/spamassassin/local.cf 

Paste the information below into the file.

rewrite_header Subject ***** SPAM _SCORE_ *****
report_safe             0
required_score          5.0
use_bayes               1
use_bayes_rules         1
bayes_auto_learn        1
skip_rbl_checks         0
use_razor2              0
use_dcc                 0
use_pyzor               0
ifplugin Mail::SpamAssassin::Plugin::Shortcircuit
endif

The next step is to save the change file and then you can close it.

Setting up your Postfix

First of all, to start configuring, you need to edit the Postfix configuration file

nano /etc/postfix/master.cf

Next, you need to find the following records, which are presented below:

smtp      inet  n       -       y       -       -       smtpd
#smtp      inet  n       -       y       -       1       postscreen
#smtpd     pass  -       -       y       -       -       smtpd
#dnsblog   unix  -       -       y       -       0       dnsblog
#tlsproxy  unix  -       -       y       -       0       tlsproxy
submission inet n       -       y       -       -       smtpd

Under smtp configuration add SpamAssassin content filter

smtp      inet  n       -       y       -       -       smtpd

-o content_filter=spamassassin
spamassassin unix -     n       n       -       -       pipe
user=spamassassin argv=/usr/bin/spamc -f -e  
/usr/sbin/sendmail -oi -f ${sender} ${recipient}

Next, you should save this file and you can then close it. This is followed by restarting your Postfix and enabling spamassassin to run on your server.

systemctl restart postfix.service
systemctl enable spamassassin.service
systemctl start spamassassin.service

The topic of security has always been relevant in the IT industry. In this article we will give some tips on how to secure your server and try to help to ensure that your server is not subjected to threats and attacks.

Last failed login: Mon Apr 15 13:52:45 MSK 2017 from 1.1.1.1 on ssh:notty
There were 4395 failed login attempts since the last successful login.

If you found approximately such a message during your authorization to the server, it means that unsuccessful authorization attempts were made by someone else. Malicious users pick up SSH passwords purposefully (automatically, or using programmed infected computers).

Configure authorization from specific IP

Configure authorization from specific IP If you plan to connect to the server and conduct work only strictly from one device and / or only from certain IP addresses, you can enter the following lines:

/etc/hosts.deny
sshd: ALL

In this file:

/etc/hosts.allow
Sshd: Your IP address

Thus, SSH access for all subnets except the specified one will be denied. After that, you need to restart the service using the service:

service sshd restart

Change SSH port

To change the SSH port you need to uncomment this file /etc/ssh/sshd_config and change Port 22 to a free one, it can be any number up to 65536

After that, you need to start the server with the command:

service sshd restart

Use SSH keys

The advantage and advantage of this method is that you can be authorized on the server without regularly having to send your password through the network.

Even if someone listens on your connection, he will not have the opportunity to intercept and crack your password, since in fact it is never transmitted. Also, using SSH to identify keys eliminates the risk associated with brute-force attacks, by significantly reducing the attacker’s chance to guess the correct credentials.
The key pair is created using the command

ssh-keygen

The private key (file without extension) is copied to the PC, and the public key (keyname.pub) is copied to the file on the server. .ssh / authorized_keys

In order to disable password authorization, in the same SSH configuration, you need to change the PasswordAuthentication yes directive to PasswordAuthentication no and restart the service – authorization will remain only with the SSH key.

Grown the partition and File System

For the following file systems: xfs, ext4, btrfs, ntfs (for Windows, starting from Vista) is possible to growth online (i.e. without unmounting before proceeding). Ntfs and btrfs even can shrink online, other file systems only then aren’t mounted).

First of all, you need the root access to your VPS server. After login, you need to run the lsblk command. Here you can see all disk devices, their volume, and partitions. In this screenshot, you can see that vda has a size of 50 GB, and in this case, vda1 + vda2 have 30 GB. After that, please enter the parted /dev/vda

As we can see, the command parted is run. Next, we run the command – p (Print), which shows the partitions and offers to change/fix the GPT table so that it matches the size of the virtual disk.
We agree – we write: Fix

After that, we need to run resizepart 2 – this is the command that marks the resize of the partition. You can take the final number from the size of the disk – the size can be seen on screen 2 – 53, 7GB

Finally, you need to use the q command – it exits parted. For the ext3 / ext4 filesystem format, the following command: resize2fs /dev/vda2

Done! At this stage, the changes are complete.

For xfs, you can use the command: xfs_growfs

For btrfs, you can use the command: btrfs filesystem resize

For ext4, you can use the command: resize2fs /dev/vda2

Please note! In no way does this mean that you will be given this IPv4 address, or an IPv4 address from this subnet.Test IP addresses are provided as a guide. We offer our clients several types of subnets, and this does not mean that you will be provided with a server with a dedicated IPv4 address that will belong to this subnet that you are testing.

Europe

Austria (Vienna): lg-at1.hostry.com
Belgium (Brussels): lg-be1.hostry.com
Bulgaria (Sofia): lg-bg1.hostry.com
Czech Republic (Prague): lg-cz1.hostry.com
Czech Republic (Veseli nad Luznici): lg-cz2.hostry.com
Denmark (Tender): lg-dk1.hostry.com
Estonia (Tallinn): lg-ee1.hostry.com
Finland (Helsinki) lg-fi1.hostry.com
Germany (Frankfurt) lg-de2.hostry.com
Greece (Thessaloniki): lg-gr1.hostry.com
Hungary (Budapest): lg-hu1.hostry.com
Ireland (Dublin): lg-ie1.hostry.com
Iceland (Reykjavik): lg-is1.hostry.com
Latvia(Riga): lg-lv1.hostry.com
Moldova (Chisinau): lg-md1.hostry.com
Netherlands (Amsterdam): lg-nl1.hostry.com
Netherlands (Dronten): lg-nl2.hostry.com
Norway (Oslo): lg-no1.hostry.com
Poland (Gdansk): lg-pl1.hostry.com
Portugal (Lisbon): lg-pt1.hostry.com
Romania (Bucharest): lg-ro1.hostry.com
Serbia (Belgrade): lg-rs1.hostry.com
Slovakia (Bratislava): lg-sk1.hostry.com
Spain (Madrid): lg-es2.hostry.com
Switzerland (Geneva): lg-ch1.hostry.com
United Kingdom (London) lg-gb2.hostry.com

North America

Canada (Toronto): lg-ca1.hostry.com
USA (Dallas): lg-us1.hostry.com
USA (Los Angeles): lg-us2.hostry.com
USA (Miami): lg-us3.hostry.com

Asia

China (Hong Kong) lg-cn2.hostry.com
India (New Delhi) lg-in2.hostry.com
Israel (Tel Aviv) lg-il1.hostry.com
Kazakhstan (Almaty) lg-kz1.hostry.com
Singapore (Singapore): lg-sg1.hostry.com
Turkey (Izmir): lg-tr1.hostry.com

SUSE is the network driver for Windows, and SUSE – Block Driver for this OS is already installed, and the server will not load normally and you will have a Windows recovery environment. The first thing to do is to open access to the server disk from the restore request

Here you need to check if di C :\ your server disk was detected. If your drive was not detected, you need to download VirtlO drivers from ISO. You can check disk detection as follows:

Go to the Windows command line;

Then run the diskpart command

In DIckPart, you must run list volum and then exit

list volume: this output will show detected volumes. Your C :\ servers are usually located E :\ in the Windows recovery environment. You are looking for a volume, commonly called “OS,” whose size matches the size of the VPS instance. If your drive has been detected, go to the “Uninstall SUSE Driver Violators” section, otherwise continue reading.

Downloading VirtIO drivers

You need to download and mount the VirtIO ISO driver on the virtual machine. You can download drivers to your Vultr account using the following URL. After this, the virtual machine reboots. If successful, you will see a screen asking you to select a keyboard layout. Select “USA”, then click “Troubleshooting” -> “Advanced Options” -> “Command Prompt.”

https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso

Next, open the command line and go to VirtIO ISO (which is most likely D: \). Download the VirtIO storage drivers into the recovery environment with the following commands:

drvload D:\vioscsik12R2\amd64\vioscsi.inf

drvload D:\viostork12R2\amd64\viostor.inf

You must run the diskpart command, then enter list volume, then exit.

Removing abusive SUSE drivers

First, run this command

dism /get-drivers /image:e:\

If the system volume of your VPS instance has a letter other than this E: \, use it instead. You are looking for any drivers where the provider name is “SUSE”. They will have names that match the oemX.inf template. Use this command to remove two problematic drivers:

dism /image:e:\ /remove-driver /driver:oem9.inf /driver:oem10.inf

This step helps to enter from the command line. You must click on “continue” to restart the VPS instance

These special KVM servers have many purposes, such as:

• file storage
• organization of personal cloud storage
• data backup
• installation of personal or SOHO systems for working with files and documents (as a NextCloud, Seafile, and the like).

This is the perfect solution for you if you are looking to organize your storage in a way that is safe and secure. We all prefer to make reserves, in any area of ​​life it is an absolutely irreplaceable thing, in that there is an emergency storage for some personal needs and requirements. Therefore, today the relevance and importance of backups is undoubtedly of great importance in life. No matter how much technology is developed today, the backup process always takes place and there will never be that this process loses its relevance or value. To host websites and other projects, you must use SSD VDS or dedicated servers.

The advantage of backup storage is also that it solves the problem of data transfer and working with shared documents.Even if there are a lot of duplicated components on your server, all the data can be on an expensive array with a large excess, no one is immune from the fact that there will be logical errors, there will be a certain human factor. Learn more about the importance of backups here.