dana.satriya

Apabila kita mempunyai 3 host

192.168.16.0 0.0.0.255

192.168.17.0 0.0.0.255

192.168.18.0 0.0.0.255

maka, kita ubah ketiga IP di atas menjadi biner.. 16 bit awal (192.168) memiliki kesamaan

16 diubah menjadi 0 0 0 1 0 0 0 0

17 diubah menjadi 0 0 0 1 0 0 0 1

18 diubah menjadi 0 0 0 1 0 0 1 0 ;; dari ketiga oktal tersebut, terdapat persamaan bit yaitu sebnyak 6 bit. Apabila dijumlahkan dengan 16 bit awal, maka total akan didapat 16 + 6 = 22 bit yang sama

subnet /22 adalah 255.255.255.252

sehingga 255.255.255.255 - 255.255.255.252 = 0.0.0.3 

sehingga acl menjadi 192.168.16.0 0.0.0.3

root@schrodinger:/home/dana# mount
/dev/sda1 on / type ext3 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
/sys on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,noexec,nosuid,nodev,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
devshm on /dev/shm type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
securityfs on /sys/kernel/security type securityfs (rw)
/dev/sdb1 on /media/dana type vfat (rw)

root@schrodinger:/home/dana# mount -t vfat /dev/sdb /media/dana
 

root@IMS:/home/dana# java -version
java version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK Client VM (build 1.6.0-b09, mixed mode, sharing)
root@IMS:/home/dana# javac -version
javac 1.6.0_06
root@IMS:/home/dana# update-alternatives –config java

There are 2 alternatives which provide `java’.

  Selection    Alternative
———————————————–
          1    /usr/lib/jvm/java-6-sun/jre/bin/java
+        2    /usr/lib/jvm/java-6-openjdk/jre/bin/java

Press enter to keep the default[], or type selection number: 1
Using ‘/usr/lib/jvm/java-6-sun/jre/bin/java’ to provide ‘java’.
root@IMS:/home/dana# update-alternatives –config javac

There is only 1 program which provides javac
(/usr/lib/jvm/java-6-sun/bin/javac). Nothing to configure.

The SIP transport sublayer is a layer within SIP, and therefore pertains to the application layer, where the transport layer is a full TCP/IP Layer within its own. These two layers are contiguous layer.

*chapter 7.1.2 Morgan Kauffman’s book*

Masih aga bingung, gimana susunan protokol SIP dan kaitannya ama TCP/IP (ada sublayer SIP segala). slow