mRemoteNG takes up to 30sec to start when cut from Internet

mRemote is your one-stop-shop for all your remote connection needs (telnet/ssh/rdp/ica).

But when connected on a network with no internet connection, it takes a while to load... 20~30 sec.

"mRemoteNG and many of its associated files are digitally signed with a certificate from Comodo. Microsoft calls this technology Authenticode. When the .NET Framework starts mRemoteNG, it verifies the certificate revocation list (CRL) from Comodo to verify that the certificate is still valid.

This is a security feature and is used to verify that mRemoteNG has not been tampered with."

"The checking is all handled by the .NET Framework before mRemoteNG even loads."
by rmcardle, coder of mRemoteNG.

But this can be disabled, if needed.

Add

<runtime><generatePublisherEvidence enabled="false"/></runtime>

to the end of mRemoteNG.exe.config file, inside the <configuration> tag, located in the directory where mRemoteNG.exe is installed/located. 

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Internet IP addressing map

This one is an oldie revisited :-)

Waaaay back then (2006), xkcd made an Internet IP address map.

Someone made an update (@2011)... the change is... abyssal!

Auto reboot on VirtualBox

If you ever get a linux on continuous reboot for some kind of 'virtual hardware' issue, it could be a real nag!!

# VBoxManage setextradata <VMNAME> "VBoxInternal/PDM/HaltOnReset" 1

This will do the trick!!

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Re-attach NFS share on ESX after connection loss

ESXi 5.x

To remove a datastore:

1. To list the mounted datastores on the host:
 
# esxcli storage nfs list

2. Make a note of the NFS datastore from step 1. Run this command to delete the NFS mount:
 
# esxcli storage nfs remove -v NFS_Datastore_Name

Note: This operation does not delete the information on the share, it unmounts the share from the host. If the NFS datastore is being used by either a virtual machine or a third party script, you may see this error:

Error performing operation: NFS Error: Unable to Unmount filesystem: Busy.

3. To add the datastore, run this command to mount the NFS datastore: 

# esxcli storage nfs add -H NFS_IP|NFS_HOSTNAME -s Share_mount_point_on_the_NFS -v DatastoreName

On a working cluster, you only need to do this on one node, the others will pickup.
 

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BASH redirection

   1>filename
      # Redirect stdout to file "filename."
   1>>filename
      # Redirect and append stdout to file "filename."
   2>filename
      # Redirect stderr to file "filename."
   2>>filename
      # Redirect and append stderr to file "filename."
   &>filename
      # Redirect both stdout and stderr to file "filename."
      # This operator is now functional, as of Bash 4,
      # final release.

   M>N
     # "M" is a file descriptor, which defaults to 1,
     # if not explicitly set.
     # "N" is a filename.
     # File descriptor "M" is redirect to file "N."
   M>&N
     # "M" is a file descriptor, which defaults to 1,
     # if not set.
     # "N" is another file descriptor.

And there you go :-)

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Cisco ASA Firewall TCP connection flags

 


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External NTP sync for Domain Controllers

Long time, no see.

One more for the road :-)

This is to be done on the PDC emulator, usually your 1st DC.

1. Set registry values 

HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\NtpServer [STRING] = "1st.fqdn.or.ip,0x1 2nd.fqdn.or.ip,0x1"
(space separated string, with ',0x1' after each entry) 

HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\ReliableTimeSource [DWORD] = 1
(if this doesn't exist, don't create it) 

HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\LocalNTP [DWORD] = 0
(if this doesn't exist, don't create it) 

HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlags [DWORD] = 5

2. Restart w32time

net stop w32time && net start w32time

3. Resync the time service

w32tm /resync /rediscover

4. Verify sync

w32tm /query /status

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