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15%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
.13.134.52):            Not shown: 994 filtered ports            PORT    STATE  SERVICE VERSION            22/tcp  open   ssh     OpenSSH 4.3 (protocol 2.0)            25/tcp  closed smtp            53/tcp  open   domain  ISC BIND 9.3
15%
Processor and Memory Metrics
12.02.2014
Home »  HPC  »  Articles  » 
B       hald-addon-input   ...    22.9 MiB +   4.0 MiB =  26.9 MiB       plasma-desktop  26.0 MiB +   5.7 MiB =  31.7 MiB       konsole (3)  28.3 MiB +   4.4 MiB =  32.7 MiB       kwin  41.0 MiB +   2.0 MiB =  43.0 MiB       Xorg 146
15%
Secure Your Server with TCP Wrappers
02.10.2012
Home »  Articles  » 
 
addresses to connect /etc/hosts.allow , the file would simply look like this: sshd: 10.10.10.10, 1.2.3.4, 21.21.21.21 TCP Wrappers works nicely, even if you change the standard SSH port (it’s usually TCP
15%
SSHFS for Shared Storage
15.09.2020
Home »  HPC  »  Articles  » 
need SSH active on both systems. Almost all firewalls are set up to allow port 22 access or have mapped port 22 to a different port that can accommodate SSHFS. All the other ports can be blocked
15%
Nagios alerts implemented via VoIP
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Zentilia, 123RF.com
well. Of the available clients, PJSUA [3] turns out to be the best choice. PJSUA is the PJSIP reference implementation, and it comprises a function library for SIP, RTP, STUN, and some other Vo
15%
Benchmarking a new architecture
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
-V architecture [3] (Figure 2). RISC-V is a relatively recent open source CPU instruction set available royalty-free and has successfully drawn interest from more than a dozen chip suppliers so far. It cannot yet
15%
TCP Stealth hides open ports
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © momo5287, 123RF.com
getsockopt ... 17 Resolving symbol close ... 18 Resolving symbol epoll_wait ... 19 Resolving symbol select ... 20 All dynamic symbols could be resolved. 21 socket(2, 1, 6) = 3 22 Socket 3 will be Knockified
15%
Manage OpenVPN keys with Easy-RSA
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Orlando Rosu, 123rf.com
the Debian-based, distributions install it along with openvpn – one exception being Ubuntu, which only offers easy-rsa starting with Cosmic Cuttlefish (Ubuntu version 18.10) [3]. The successor, Easy-RSA 3
15%
Single sign-on like the big guys
20.06.2022
Home »  Archive  »  2022  »  Issue 69: Terra...  » 
Lead Image © Sergey Nivens, 123RF.com
_DB_PASSWORD=SOME_DB_PASSWORD 15 command: ["start-dev"] 16 17 postgres: 18 container_name: postgres 19 image: postgres:14 20 environment: 21 - POSTGRES_PASSWORD=SOME_DB_PASSWORD 22
15%
HDF5 and Parallel I/O
17.05.2017
Home »  HPC  »  Articles  » 
, ALLOCATABLE, TARGET :: DATA(:,:)   ! Data to write 18      INTEGER :: RANK = 2             ! Dataset rank 19    20      CHARACTER(MPI_MAX_PROCESSOR_NAME) HOSTNAME 21      CHARACTER(LEN=100) :: FILENAME  ! File name 22      CHARACTER(LEN=3) :: C

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