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15%
Connecting dissimilar IPsec implementations
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© Yuri Arcurs, 123RF.com
endpoint1=192.168.80.0/24 07 endpoint2=192.168.2.0/24 08 action=requireinrequireout 09 auth1=computerpsk 10 auth1psk="test123" 11 qmsecmethods=esp:sha1-3des 12 qmpfs=dhgroup2 If you need
15%
Strategies for routing voice calls around a firewall
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
gnohz, 123RF.com
: 09 Content-Type: application/sdp 10 Content-Length: 142 11 12 v=0 13 o=alice 53655765 2353687637 IN IP4 pc33.atlanta.com 14 s=- 15 t=0 0 16 c=IN IP4 pc33.atlanta.com 17 ... 0
15%
An IT nomad's diary
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Jasmin Merdan, 123RF.com
passphrase again: 08 Your identification has been saved in /home/UserName/.ssh/libra_id_rsa. 09 Your public key has been saved in /home/UserName/.ssh/libra_id_rsa.pub. 10 Creation successful 11 12 You may now
15%
Boost performance of your Python programs
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Eric Isselée, 123RF
(number, label): 07 for i in xrange(number): 08 print ' ' + str(i) + ' ' + label 09 sleep((number - 15)/10.0) 10 11 if '__main__' == __name__: 12 13 p1 = Process(target = count, args = (20
15%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
main(int argc, char *argv[]) 06 { 07 char *newblock = NULL; 08 09 for (int allocation = 0; newblock = (void *) malloc(1024 * 1024); allocation++) 10 { 11 //for (int i=0; i < (1024 * 1024
15%
Monitoring daemons with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Shariff Che'Lah, 123RF.com
check) or as RC scripts. Listing 2 CUPS Monitoring 01 #! /bin/sh 02 03 while true 04 do 05 06 lpq -Plp | grep -q "lp is ready" 07 08 if [ $? -gt 0 ] 09 then 10 cupsenable lp 11 fi 12
15%
Using the Expect scripting environment
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ivan Mikhaylov, 123RF.com
$spin 08 @$molecule.xyz 09 10 END 11 12 done 13 done The Gaussian 09 (g09) computational chemistry simulation package uses a small input that tells it what type of predictions are desired and which
15%
Get the best out of your bandwidth with tc
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Russell Shively, 123RF.com
is as follows: tc filter add dev $DEV protocol ip parent 1:0 prio 100 u32 match ip $DIR 12.34.56.78 flowid 1:12 You'll be glad to know the filter's config is much simpler than the classes or the qdisc
15%
Data acquisition with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Dmitriy Syechin, 123RF
clear 03 while true 04 do 05 echo "New record" 06 maxrecord=`ls -1 *.dat | sort | tail -1 | cut -d. -f 1` 07 newrecord=$(echo $maxrecord + 1 | bc ) 08 width=`echo $newrecord | wc -c` 09 10 ... 11 12
15%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
06 I_T nexus information: 07 LUN information: 08 LUN: 0 09 Type: controller 10 SCSI ID: deadbeaf1:0 11 SCSI SN: beaf10 12 Size: 0 13 ... 0

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