Azure

https://github.com/Azure/hpcpack-template-2016

Cable type and port type

Single mode - yellow cable, long distances, 10 Gigabit
Multimode   - orange cable, short distances,used for local-area network,100Gbps

Gigabit SX-LC Mini-GBIC provides a full-duplex Gigabit solution up to 550 meters over multimode fiber.

• 2-220 m (62.5 µm core diameter / 160 MHz*km bandwidth)
• 2-275 m (62.5 µm core diameter / 200 MHz*km bandwidth)
• 2-500 m (50 µm core diameter / 400 MHz*km bandwidth)
• 2-550 m (50 µm core diameter / 500 MHz*km bandwidth)

Gigabit LX-LC Mini-GBIC provides a full-duplex Gigabit solution up to 10 km over singlemode fiber, or up to 550 meters over multimode fiber.

• 2-550 m (multimode 62.5 µm core diameter / 500 MHz*km bandwidth)
• 2-550 m (multimode 50 µm core diameter / 400 MHz*km bandwidth)
• 2-550 m (multimode 50 µm core diameter / 500 MHz*km bandwidth)
• 2-10,000 m (singlemode fiber)

10-GbE SFP+ Short Range supports the 10-Gb SR standard, providing 10-Gb connectivity up to 300 meters over multimode fiber.

• 2-26 meters (62.5 µm core diameter / 160 MHz*km bandwidth)
• 2-33 meters (62.5 µm core diameter / 200 MHz*km bandwidth)
• 2-66 meters (50 µm core diameter / 400 MHz*km bandwidth)
• 2-82 meters (50 µm core diameter / 500 MHz*km bandwidth)
• 2-300 meters (50 µm core diameter / 2000 MHz*km bandwidth)

10-GbE SFP+ Long Range supports the 10-Gb LR standard, providing 10-Gb connectivity up to 10 km over singlemode fiber.

Get security counting

ASA
show access-list | in hitcnt
show asp drop

Juniper
root@> configure
Entering configuration mode

{primary:node0}[edit]
root@# set logical-systems ?
Possible completions:
  <name>               Logical system name
 name
{primary:node0}[edit]

set cli screen-length 0

show security policies hit-count logical-system XXX

sudo

su, root password
sudo su, user password,.profile,.bashrc,/etc/profile,increase security
sudo -i,preferred cleaner way
sudo -s,sudo /bin/bash, will not read any environmental files,more secured
sudo su - == sudo su - root

Window update server

procedure to indicate update server in client site

1. login as administrator account
2. in command prompt : gpedit.msc
3. Administrative Template --&gt; Windows components --&gt;Window update --&gt; Specify intranet Microsoft update service location
    choose enable , set both update server and statistics as http://192.168.1.1
4. click OK
5. in command prompt: gpupdate /force
6. click window update in control panel, and use update by your system administrator to see if you can see the update file (if the pc is latest status, will show window is up to date )
7. Run this regedit file

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate]
"WUServer"="http://192.168.1.1"
"WUStatusServer"="http://192.168.1.1"
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU]
"NoAutoUpdate"=dword:00000000
"AUOptions"=dword:00000002
"ScheduledInstallDay"=dword:00000000
"ScheduledInstallTime"=dword:00000003
"UseWUServer"=dword:00000001



Windows Defender error code 0x80072efd
Windows Update error code 80072efd
Windows Update error 80072ee2

netsh winhttp reset proxy

https://support.microsoft.com/en-us/kb/971058

http://answers.microsoft.com/en-us/windows/forum/windows_vista-update/windows-update-error-80072efd/398546d2-6b6d-47a0-b075-82d815fa9a8f



gpupdate /force

NTP

net stop w32time
w32tm /config /syncfromflags:manual /manualpeerlist:"192.168.1.1"
w32tm /config /reliable:yes
net start w32time

w32tm /query /configuration
w32tm /query /status
Time /T

w32tm /config /manualpeerlist:192.168.1.1,0x8 /syncfromflags:MANUAL
net stop w32time
net start w32time

w32tm /resync

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checksum

powershell -c "(Get-FileHash -a MD5 'C:\Users\.....\Downloads\hello.txt').Hash"

delete files

sudo ls -l | grep May | awk '{print $9}' > /home/cloudoper/dellist
sudo cat /home/cloudoper/dellist | xargs rm -f