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|How to configure SNMPv3 on ubuntu 14.04 server|
Monday, September 29, 2014 @ 11:29:35 UTC by lbadmin (459 reads)
|gg234 writes |
Simple Network Management Protocol (SNMP) is an "Internet-standard protocol for managing devices on IP networks". Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks and more.It is used mostly in network management systems to monitor network-attached devices for conditions that warrant administrative attention. SNMP is a component of the Internet Protocol Suite as defined by the Internet Engineering Task Force (IETF). It consists of a set of standards for network management, including an application layer protocol, a database schema, and a set of data objects.
|(Read More... | 3 comments | Score: 0)|
|RationalPlan Single becomes free on Linux|
Friday, September 19, 2014 @ 12:16:33 UTC by lbadmin (447 reads)
|IoanLucian writes |RationalPlan Single becomes free on Linux
Starting with version 4.7 RationalPlan Single is distributed as freeware under all Linux operating systems. RationalPlan is a project management suite that puts the accent on productivity, ease of use and fast learning. The Single version can be seen as an alternative to Microsoft Project and the perfect solution for novice or accidental project managers.
RationalPlan products work on all major operating systems including Windows, Linux and Mac OS X. This is a major advantage as it offers cross platform compatibility. Linux platform was the last one that was adopted and presents the best integration with Ubuntu distributions (the products are even listed under the Ubuntu Apps Directory). Even more the company decided to offer the Single version as freeware on Linux. This decision is aiming to help the educational environment (students, teachers) and non-profit organizations.
|(Read More... | 4 comments | Score: 0)|
|How To Setup Your own Mail Server With Anti-Spam Configuration in 60 Minutes|
Wednesday, September 10, 2014 @ 12:07:53 UTC by lbadmin (742 reads)
|mikeskril writes |
This tutorial will teach you how to set up your own robust email server. We are focusing on a small personal server with up to a few email accounts. After following this guide, you will have a fully functional mail server and you can connect with your favourite client to access, read and send emails. The Anti-Spam configuration will drop unwanted messages.
Software and technologies used
- Postfix v2.9.6 as SMTP server
- Dovecot v2.0.19 as IMAP server
- We will use Unix user accounts and tunnel the SASL authentication through TLS
- Postgrey v1.34 ? to reject spam from the beginning
- SPF (Sender Policy Framework) validating to reduce spam
- SPF DNS entry to prevent spoofing
- DKIM (Domain Keys Identified Mail) to sign our email messages
|(Read More... | 3 comments | Score: 5)|
|How to manage a WiFi connection from the command line|
Monday, September 01, 2014 @ 12:21:25 UTC by lbadmin (1060 reads)
|xmodulo writes |
Whenever you install a new Linux distribution on a computer, it is in general recommended that you connect to the internet via a wired connection. There are two main reasons for this: one, your wireless adapter may not have the right driver loaded; second, if you are installing from the command line, managing WiFi is scary. I always tried to avoid dealing with WiFi over the command line. But in the Linux world, there is no place for fear. If you do not know how to do something, that is the only reason you need to go ahead and learn it. Full Story
|(Read More... | 2 comments | Score: 0)|
|Setup FTP server using VsFtp and Configure Secure FTP connections on Ubuntu 14.0|
Monday, September 01, 2014 @ 12:21:19 UTC by lbadmin (734 reads)
|gg234 writes |
|(Read More... | 518 bytes more | 2 comments | Score: 0)|
|Configure NFS Server and Client Configuration on Ubuntu 14.04|
Friday, August 08, 2014 @ 11:20:31 UTC by lbadmin (1606 reads)
|gg234 writes |
NFS was developed at a time when we weren't able to share our drives like we are able to today -- in the Windows environment. It offers the ability to share the hard disk space of a big server with many smaller clients. Again, this is a client/server environment. While this seems like a standard service to offer, it was not always like this. In the past, clients and servers were unable to share their disk space.
Thin clients have no hard drives and thus need a "virtual" hard-disk. The NFS mount their hard disk from the server and, while the user thinks they are saving their documents to their local (thin client) disk, they are in fact saving them to the server. In a thin client environment, the root, usr and home partitions are all offered to the client from the server via NFS.
|(Read More... | 7 comments | Score: 0)|
|Directly SSH to Hosts with LAN IPs Through the Gateway|
Thursday, June 26, 2014 @ 12:37:30 UTC by lbadmin (1167 reads)
|ericzma writes |Directly SSH to Hosts with LAN IPs Through the Gateway
: We have many hosts with internal/LAN IPs like 10.0.3.* behind a gateway, say gateway.example.org and the hosts with LAN IPs can connect to the Internet through the gateway. We used iptables to forward port from the gateway to internal IPs so that users from hosts with Internet connections, say user.example.org, can SSH to the gateway?s forwarded port to log on the internal hosts. However, there should be rules added for these hosts and the users need to connect to these non-standard (not 22) ports of the gateway that may be blocked by firewalls of their network. Continue reading: Directly SSH to Hosts with LAN IPs Through the Gateway
|(Read More... | 2 comments | Score: 0)|
|Git through SSH Tunnel as Proxy|
Wednesday, June 11, 2014 @ 11:37:56 UTC by lbadmin (2336 reads)
|ericzma writes |Git through SSH Tunnel as Proxy
: git is a great tool and it is common to have a git server over SSH possibly managed by gitolite. However, there are situations that we can not directly connect to the git server but be able to SSH to another node that can connect to the git server. The git server may allow only internal connections because of security. With the node that we can SSH to, we can still use the git server ?directly? by setting up a SSH tunnel as a proxy for the git connection. Continue reading: Git through SSH Tunnel as Proxy
|(Read More... | 11 comments | Score: 0)|
|Catching the Signal Sent by Kill in C on Linux|
Wednesday, June 11, 2014 @ 11:37:50 UTC by lbadmin (1943 reads)
|ericzma writes |Catching the Signal Sent by Kill in C on Linux
: Programs may want to catch the kill signals sent by the kill command in C programs on Linux so that it can gracefully shutdown itself before it is killed. For example, I have a daemon progd running, and it may be killed by pkill progd. The progd may want to save some in-memory state to disks because otherwise that data will be lost. The question is how to catch the signal sent by the kill command and response to it in the programs implemented in C on Linux? Continue reading: Catching the Signal Sent by Kill in C on Linux
|(Read More... | 13 comments | Score: 0)|
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