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18%
Linux nftables packet filter
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © alphaspirit, 123RF.com
The Linux kernel already contains a variety of packet filters, starting with ipfwadm and followed by ipchains and iptables. Kernel 3.13 saw the introduction of nftables [1], which uses the nft tool
18%
Exploring the filesystem that knows everything
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
Lucy Baldwin, 123RF
paper [2] entitled "Processes as Files." Cross-pollinated through the later Bell Labs Plan 9 implementation, Linux's version is original in exposing not just process information, but a wealth of system
18%
Trivy security scanner
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Lead Image © MPower, photocase.com
), infrastructure-as-code (IaC) misconfigurations, and sensitive information and passwords. Installation Trivy can be installed on all popular Linux distributions and macOS. Alternatively, you can run Trivy
18%
Parallel I/O Chases Amdahl Away
12.09.2022
Home »  HPC  »  Articles  » 
for an external application is to write a serial application (one process) that reads the Mfiles  data files into memory and then logically divides it into Nproc  partitions and writes each one to a different file
18%
Data Analysis with R and Python
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © mopic, 123RF.com
/json;charset=utf-8\n\r\n\r%s" %json.dumps(obj) Lines 9 through 18 iterate against all entries of a database cursor, which the call to the find() method in line 9, generates from the queried data collection ... 25
18%
Tool your HPC systems for data analytics
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Sergey Nivens, 123RF.com
analytics is the combination of two concepts: "data analysis" and "analytics." Data analysis [3] is very similar to data analytics, in that it is the process of massaging data with the goal of discovering
18%
Moving your data – It's not always pretty
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
digifuture, 123RF
information. 8. bbFTP Although bbFTP [23] sounds like it's related to BBCP, it's really not. BBCP was developed at SLAC [24], and bbFTP was developed at IN2P3. [25]. bbFTP is something like FTP, but it uses
18%
Environment Modules Using Lmod
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © Federico Caputo, 123RF.com
to control dynamically the huge number of combinations that result from various versions of tools and libraries. The original Environment Modules [2], Tcl/C, has been around since the early 1990s. High
18%
Web and Mail Servers with IPv6
13.12.2011
Home »  Articles  » 
 
. To allow this to happen, add the following rule on your firewall: ip6tables -A INPUT -j REJECT -p tcp-dport 25 --reject-with tcp-reset This setup acknowledges IPv6 connections to the SMTP port 25
18%
Endlessh and tc tarpits slow down attackers
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © Yewkeo, 123RF.com
see an image that uses Alpine Linux as its base (Listing 1). Listing 1 Endlessh Dockerfile FROM alpine:3.9 as builder RUN apk add --no-cache build-base ADD endlessh.c Makefile / RUN make

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