Галушка Дмитрий, Galushka Dmitry, diger – blog

http://www.youtube.com/watch?v=jjmlcaXj5r8

mouse down — Eject removable media ( I think Boot ROMs prior to 2.4f1 excluded the CD drive )
opt — Bring up OF system picker on New World machines
cmd-opt — Hold down until 2nd chime, will boot into Mac OS 9 ?
cmd-x (or just x?) — Will boot into Mac OS X if 9 and X are on the same partition and that’s the partition you’re booting from.
cmd-opt-shift-delete — Bypass startup drive and boot from external (or CD). This actually forces the system to NOT load the driver for the default volume, which has the side effect mentioned above. For SCSI devices it searches from highest ID to lowest for a partition with a bootable system. Not sure about IDE drives.
cmd-opt-shift-delete-# — Boot from a specific SCSI ID # (# = SCSI ID number)
cmd-opt-p-r — Zap PRAM. Hold down until second chime.
cmd-opt-n-v — Clear NV RAM. Similar to reset-all in Open Firmware.
cmd-opt-o-f — Boot into open firmware
cmd-opt-t-v — Force Quadra AV machines to use TV as a monitor
cmd-opt-x-o — Boot from ROM (Mac Classic only)
cmd-opt-a-v — Force an AV monitor to be recognized as one
c — Boot from CD. If set to boot to X and no CD is present, may boot to 9.
d — Force the internal hard disk to be the startup device
n — Hold down until Mac logo, will attempt to boot from network server (using BOOTP or TFTP)
r — Force PowerBooks to reset the screen
t — Put FireWire machine into FireWire Target Disk mode
z — Attempt to boot using the devalias zip from first bootable partition found
shift — (Classic only) Disable Extensions
shift — (OS X, 10.1.3 and later) Disables login items. Also disables non-essential kernel extensions (safe boot mode)
cmd — (Classic only) Boot with Virtual Memory off
space — (Classic only) Trigger extension manager at boot-up
cmd-v — (OS X only) show console messages during boot
cmd-s — (OS X only) boot into single user mode
Did not work simply ‘z’?
Читать далее…

SSH server configuration – настройка доступа к Cisco по ssh
простой пример:

!
hostname anyname
!
ip domain-name anydomain.com
!
crypto key generate rsa
!
ip ssh version 2
!
line vty 0 4
access-class VTY in
logging synchronous
transport input ssh
!

switchport port-security violation restrict

1. Узнать порт на котором не работает сетевуха (это можно сделать вручную выследить порт, или посмотреть ошибки Security Valuation на LMS (Functional – Device Diagnostic Tools – Device Center, далее кликнуть по ссылке с репортом ошибок )

2. Далее заходим на этажный свитч, в привилегированный режим.
#show mac-address-table | include 001f.292e.1ded (мак устройства)
40 001f.292e.1ded STATIC Fa3/0/9
Тем самым выясняем, что данный мак закреплен port-security за портом Fa3/0/9, если порт не совпадает с портом в который было включено устройство (стал известен из первого пункта).

3. сбрасываем мак с интерфейса закрепленного port-security за interфейсом

#clear port-security dynamic interface Fa3/0/9

profit!

Читать далее…