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To my amazement, Telecom Italia released a pilot project of IPv6 deployment on residential/dynamic ip only adsl internet access, but on theirs support site there’s configuration only for some useless systems. So, I’ve decided to write a configuration for Cisco platform. Usually the typical Telecom Italia PPPoE or PPPoA ADSL connection with dynamic IPv4 only was authenticated with “aliceadsl” as user and password, now with bran new credential along IPv4 the endpoint router advertise a IPv6 /64 class (always dynamic). ...

Datacenter Work, a photo by Leonardo Rizzi on Flickr.

Memo: http://www-304.ibm.com/support/docview.wss?uid=isg3T1012204

Remote Desktop Licensing service to fail to start, with error code %%-1073672191. The Terminal Services Licensing service cannot start. The following error occurred: Can't initialize Cryptographic - error code 5. Sometime happens a problem with Remote Desktop Licensing services not starting. The Terminal Licensing MachineKeys have permissions for Administrators and/or TermServLicensing but the service starts using the “Network Service” account… Why?????? You can fix the problem adding Network Service account (read only privileges it’s ok), on follow directory (you can force ownership propagation for reapply the correct privilege tree): ...

There was a kernel change from version 2.6.x that causes statistics to suck 100% of CPU, even though the system is lightly loaded, that cause a server crash when loading platform statistics You can disable this feature by adding this to your notes.ini and restarting the Domino server. PLATFORM\_STATISTICS\_DISABLED=1

First think, scan your damage disk with a tool like “testdisk” (http://www.cgsecurity.org/wiki/TestDisk) look for lost partitions, unfortunately HFS is not fully supported by this great tool, then you need to use pdisk or other partition software. Disk /dev/rdisk3 - 1000 GB / 931 GiB - CHS 121601 255 63 Partition Start End Size in sectors >P HFS 262208 1953525151 1953262944 In my case, I’ve used pdisk directly on OS X: ...

Memo for testing ssl/startls connection: StarTLS: [leo@thinkleo2 ~]$ openssl s_client -connect mail.wide-net.org:25 -starttls smtp CONNECTED(00000003) [...] Verify return code: 0 (ok) --- 220 srv01.mil1.wide-net.org ESMTP - Life is short talk fast! SSL: [leo@thinkleo2 ~]$ openssl s_client -connect mail.wide-net.org:465 CONNECTED(00000003) [...] Verify return code: 0 (ok) --- 220 srv01.mil1.wide-net.org ESMTP - Life is short talk fast!

3 step for change hostname to RHEL Linux: edit: /etc/hosts 127.0.0.1 srv03.mil1.wide-net.org localhost.localdomain localhost edit: /etc/sysconfig/network HOSTNAME=srv03.mil11.wide-net.org past into kernel new hostname echo "srv03.mil1.wide-net.org" > /proc/sys/kernel/hostname Or sysctl kernel.hostname=srv03.mil1.wide-net.org Consider a restart net services /etc/init.d/network restart but is not strictly required.

I definitely hate Ubuntu, is not linux. root@ubuntu:~# cd /mnt root@ubuntu:/mnt# mkdir md1 root@ubuntu:/mnt# mount /dev/md1 /mnt/md1/ root@ubuntu:~# mount -o bind /sys /mnt/md1/sys root@ubuntu:~# mount -o bind /dev /mnt/md1/dev root@ubuntu:~# mount -o bind /proc /mnt/md1/proc root@ubuntu:~# chroot /mnt/md1 /bin/bash root@ubuntu:~# ls -l /dev/disk/by-uuid/ total 0 lrwxrwxrwx 1 root root 9 2012-02-05 11:00 455c4bdc-37d5-46ef-bb8b-d5b50c9e4e9a -> ../../md1 root@ubuntu:/# vim /boot/grub/grub.cfg root@ubuntu:/# update-grub Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.32-33-generic-pae Found initrd image: /boot/initrd.img-2.6.32-33-generic-pae Found linux image: /boot/vmlinuz-2.6.32-28-generic-pae Found initrd image: /boot/initrd.img-2.6.32-28-generic-pae Found memtest86+ image: /boot/memtest86+.bin done root@ubuntu:/# grub-install /dev/sda Installation finished. No error reported. root@ubuntu:/# grub-install --recheck /dev/sda Installation finished. No error reported. root@ubuntu:/# cfdisk /dev/sda

Rate Algorithm: defines data rate algorithm convergence: Optimistic Algorithm is aggressive enough to move to a higher rate but yet tries to conservatively capture the fluctuations of the RSSI. It starts with the highest possible rate and then decreases till the rate can be supported while periodically transmitting packets at higher rates and computing the transmission time. The optimistic rate algorithm always looks to achieve highest throughput while sacrificing noise immunity and robustness. ...