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20%
Backups using rdiff-backup and rsnapshot
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Dmitry Pichugin, Fotolia.com
DestinationSizeChange 41943106 (40.0 MB) Another view of the file statistics lists which file effected the change: # gunzip -c /mnt/backup/rdiff-backup-data/file_statistics.\ 2015-03-15T10\:44\:06+01\:00.data.gz | awk '$2
20%
John the Ripper
22.08.2011
Home »  Articles  » 
 
,000 commonly used passwords: $ john -wordlist:password.lst passfile.txt Loaded 2 passwords with 2 different salts (FreeBSD MD5 [32/64]) admin (root) t-bone (khess) guesses: 2 time: 0:00:00:00 100
20%
Arp Cache Poisoning and Packet Sniffing
05.09.2011
Home »  Articles  » 
 
can see how the arp cache poisoning works: $ sudo nemesis arp -v -r -d eth0 -S 192.168.1.2 \ -D 192.168.1.133 -h 00:22:6E:71:04:BB -m 00:0C:29:B2:78:9E \ -H 00:22:6E:71:04:BB -M 00:0C:29:B2:78:9E
20%
Build a honeypot with real-world alerts
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © Bruce Rolff, 123RF.com
. The takeaway is the -j LOG option (line 12), which logs port scanning behavior to a logfile with the iptables: prefix. Listing 1 iptable Rules 01 *filter 02 *filter 03 :INPUT ACCEPT [0:0] 04
20%
Read-only file compression with SquashFS
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © modella, 123RF.com
:31 FS_scan.csv $ gzip -9 FS_scan.csv $ ls -lsah FS_scan.csv.gz 268K -rw-r--r-- 1 laytonjb laytonjb 261K 2014-06-09 20:31 FS_scan.csv.gz The original file is 3.2MB, but after using gzip with the -9
20%
Managing Virtual Infrastructures
21.01.2013
Home »  Articles  » 
 
Version 3.1 of the oVirt management platform for virtual infrastructures has recently become available. On Fedora 17, the new release is easy to install and deploy. ... based on Windows. Bye-Bye Windows Although the Red Hat developers ported all the components of the management component, RHEV-M, from C# to Java in RHEV 3.0, use of the Administrator Console for RHEV ... Version 3.1 of the oVirt management platform for virtual infrastructures has recently become available. On Fedora 17, the new release is easy to install and deploy. ... Managing Virtual Infrastructures with oVirt 3.1
20%
Obtain certificates with acme.sh
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Lead Image © Stuart Miles, 123RF.com
/.acme.sh/www.example.com/www.example.com.cer -noout -issuer -subject -dates -serial issuer= /C=US/O=Let's Encrypt/CN=R3 subject= /CN=www.example.com notBefore=Feb 21 13:00:28 2021 GMT notAfter=May 22 13:00:28 2021 GMT serial=03B46ADF0F26B94C19443669
20%
CPU affinity in OpenMP and MPI applications
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Lead Image © podfoto, 123RF.com
CPUs. Listing 5 numactl $ numactl --hardware available: 1 nodes (0) node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
20%
Endlessh and tc tarpits slow down attackers
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © Yewkeo, 123RF.com
, so you can continue. Listing 7 Starting sshd $ systemctl start sshd $ lsof -i :22 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME sshd 5122 root 3u IPv4 62113 0t0
20%
Processor and Memory Affinity Tools
14.09.2021
Home »  HPC  »  Articles  » 
 $(find /sys/devices/system/cpu -regex ".*cpu[0-9]+/topology/thread_siblings_list") | sort -n | uniq 0,32 1,33 2,34 3,35 4,36 5,37 6,38 7,39 8,40 9,41 10,42 11,43 12,44 13,45 14,46 15,47 16,48 17,49 18,50 19,51 20,52 21,53 22,54 23,55 24,56 25

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