Linux Kernel: APIC error on CPU1: 60 (60)
Normally a samba file server does not major problems, but this day many users experienced slow service, and others could not connect to server. In conducting the review of routine, I could tell that after booting the following error is displayed in the command dmesg: APIC error on CPU0: 60 (60) APIC error on CPU0: 60 (60) APIC error on CPU1: 00 (60) APIC error on CPU1: 60 (60) APIC error on CPU0: 60 (60) During a mass file copy or any other event intensive I / O error is more frequent, even the service gets slower. It's so simple to reproduce the error and run the find command. This solution to the problem of the interface errors IPCCAs (Advanced Configuration and Power Interface) can be caused by the bus, chipset in ... Read the full article »
Linux: Installation and Configuration of NIC D-Link DGE-530T 10/100/1000 Gigabit Desktop PCI Adapter
Building networks of new high-performance clusters'm installing high availability clusters with disk block based network DRBD. To create the network or data channel DRBD devices'm installing network cards compatible with Linux: D-Link DGE-530T see. 7.00 (I) Rev B2. Features This adapter network adapter NIC includes advanced features such as Wake-On-LAN and 802.3x. Computers and operating systems that support the Advanced Configuration and Power Interface (ACPI) can remotely wake your PC from anywhere in the network with Wake-On-LAN feature. With support for 802.3x flow control, data is received and transmitted smoothly to and from the network. This NIC supports ls IEEE 802.3, 802.3u, 802.3ab, ensuring compatibility with networks ... Read the full article »
Creating a Ramdisk for Linux
A RAM disk is a portion of RAM which is used like a hard drive. RAM disks have sizes that are established as a disk partition. Access times for a RAM disk are much faster than a physical disc. However, any information stored in a RAM disk is lost when the system shuts down or restarts. But they are a good place for temporary storage of data. Since version 2.4 of the Linux kernel can be found ramdisks support, so you can find in any modern linux distro. At the time of writing I am using Ubuntu 8.04 Hardy Heron with kernel 2.6.24-19-generic. Ubuntu and Debian ramdisk using tmpfs autmontan. This device is mounted on ... Read the full article »
Filed under: File System
Linux Kernel 2.6.22, cleaner, more compact and native wireless support
For many years, the Linux wireless support has worked, but not very well. The 2.6.22 kernel includes a new and improved wireless stack. This new wireless stack has been donated by the company Devicescape Wi-Fi. This new wireless stack included, a complete implementation MAC (Media Access Control) software, WEP (Wired Equivalent Privacy), WPA (Wi-Fi Protected Access), bridging module in the data link layer, hostap, support QoS ( Quality of Service) to prioritize protocols such as VoIP (Voice over IP) support for full debug capabilities 802.11g. All this has been implemented so that the drivers (drivers) can be used without re-writing this feature on their own, which sadly is what has been done many times in the wireless world of Linux, Torvalds wrote Via | Linux -Watch ... Read the full article »
SSH: secure access with iptables
Prevent dictionary attacks on ssh There are several worms that attack the SSH server vulnerabilities using dictionaries. This should not be a problem if we have a good password policy, otherwise, there are other ways to secure our SSH service. The most obvious way to prevent access to the host, allowing connections from a small group of IP addresses using a firewall. If you currently are running a firewall you can add the following: Accept incoming SSH connections from trusted addresses. Discard all other connections. Using iptables firewall commands as follows: All connections from address 192.168.1.200 port 22 (SSH) deathbian: ~ # iptables-A INPUT-p tcp-m state - state NEW - source 192.168.1.200 - dport 22-j ACCEPT Deny SSH connections to other deathbian: ~ # iptables-A INPUT-p tcp ... Read the full article »
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How to set up a simple gateway with Debian Linux
When a company has a broadband connection to the Internet and aims to share the connection between different offices, often thought to be necessary to buy a dedicated firewall computer, which is a mistake. In this paper we show that with minimal investment and using Debian Linux to our network we can offer best services when purchasing a computer firewall. The acquisition of this hardware may be too expensive for many enterprises in Guatemala, in contrast to using a dedicated machine with Debian Linux installed and serving as a gateway for the LAN, it offers many benefits when compared against a team of dedicated firewall. To begin with, is much more flexible and also allows us to offer many extra services to our network. To run ... Read the full article »
Filed under: Articles , Debian , DHCP , Howto , Internet , Iptables , LAN , NIC
Google hired Linux Kernel Bug Manager
Google seeks an engineer with a Ph.D. to manage kernel bugs. Obviously you need him / the applicant has some familiarity with the Linux kernel and its culture and development process. Already several months ago that Google has Andrew Morton, one of the minds behind Linux, which makes me extra, it does not already have a development team to rule the world .- Or is this the beginning of total domination? Indeed, the job is located in Mountain View, CA. ... Read the full article »
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