Login Attempt Source Address?

Hi all,
Am I missing something really simple? Is there a way to see the source of a failed login attempt in the authentication logs on an IronPort C150?
For instance: Wed Jan 6 10:57:39 2010 Info: User XXX failed authentication.

If you are referring to the SMTP authentication (which can also use LDAP) the connecting source would look as follows:
Authentication attempts made during inbound connections (in order to gain relay access) are logged in the mail_logs when successful and unsuccessful. All relevant entries will be associated with the ICID in question.
Successful:
Wed Apr 22 11:43:59 2009 Info: New SMTP ICID 450 interface IncomingMail (172.16.155.16) address 172.16.155.102 reverse dns host unknown verified no
Wed Apr 22 11:43:59 2009 Info: ICID 450 ACCEPT SG None match ALL SBRS None
Wed Apr 22 11:44:48 2009 Info: SMTP Auth: (ICID 450) succeeded for user: ironport using AUTH mechanism: PLAIN with profile: IncomingAuthentication
Wed Apr 22 11:46:14 2009 Info: ICID 450 close
Unsuccessful:
Wed Apr 22 11:47:30 2009 Info: New SMTP ICID 451 interface mail (172.16.155.16) address 172.16.155.102 reverse dns host unknown verified no
Wed Apr 22 11:47:30 2009 Info: ICID 451 ACCEPT SG None match ALL SBRS None
Wed Apr 22 11:47:47 2009 Info: SMTP Auth: (ICID 451) failed for user: ironport using AUTH mechanism: PLAIN with profile: IncomingAuthentication
Wed Apr 22 11:47:56 2009 Info: ICID 451 close
Outbound SMTP Authentication
When SMTP authentication is required for deliveries to a specific host (configured via an "Outgoing" SMTP authentication profile and an SMTP route referencing said profile), both successful and unsuccessful authentication attempts will be logged in the mail_logs. All entries will be associated with the DCID in question.
Successful:
Wed Apr 22 11:06:20 2009 Info: New SMTP DCID 5633 interface 172.16.155.16 address 172.16.155.102 port 25
Wed Apr 22 11:06:20 2009 Info: DCID: 5633 IP: 172.16.155.102 SMTP authentication using the profile OutboundAuthentication succeeded.
Wed Apr 22 11:06:20 2009 Info: Delivery start DCID 5633 MID 441 to RID [0]
Wed Apr 22 11:06:20 2009 Info: Message done DCID 5633 MID 441 to RID [0]
Wed Apr 22 11:06:25 2009 Info: DCID 5633 close
Unsuccessful:
Wed Apr 22 11:19:39 2009 Info: New SMTP DCID 5640 interface 172.16.155.16 address 172.16.155.102 port 25
Wed Apr 22 11:19:41 2009 Info: DCID: 5640 IP: 172.16.155.102 SMTP authentication using the profile OutboundAuthentication failed: ('535', ['5.7.8 Error: authentication failed: authentication failure'])
Wed Apr 22 11:19:41 2009 Info: Delivery start DCID 5640 MID 448 to RID [0]
Wed Apr 22 11:19:41 2009 Info: Bounced: DCID 5640 MID 448 to RID 0 - Bounced by destination server with response: 5.1.0 - Unknown address error ('554', ['5.7.1 <[email protected]>: Relay access denied'])
Wed Apr 22 11:19:46 2009 Info: DCID 5640 close

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Network (IP) address is no longer listed as the source of multiple failed login attempts - Events 4776 in Windows 2008 R2

Our Windows 2008R2 security log is full of failed login attempt events 4776, but we're unable to block them because no IP address is provided for the network source of these attempts - like it was in Windows 2003 Server.
Log Name:      Security
Source:        Microsoft-Windows-Security-Auditing
Date:          9/26/2012 2:32:27 AM
Event ID:      4776
Task Category: Credential Validation
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Keywords:      Audit Failure
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<System>
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<EventData>
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</EventData>
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The user names are all different in these log events, and they constantly change, which may indicate a hacking attempt. However, in Windows 2003 these type of events looked like this, showing the IP address the request came from, so we could trace
and block them -- but not in Windows 2008:
Logon Failure:
Reason: Unknown user name or bad password
User Name: s
Domain: MAIL
Logon Type: 10
Logon Process: User32
Authentication Package: Negotiate
Workstation Name: MAIL
Caller User Name: MAIL$
Caller Domain: XXXX
Caller Logon ID: (0x0,0x3E7)
Caller Process ID: 3728
Transited Services: -
Source Network Address: 202.67.170.186
Source Port: 57365

2900 Series Router - Over 700 failed login attempts - How do I find the source IP?

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I received this e-mail during the night and wondered if is genuine?

It's a scam to steal your Apple ID and password.
Delete it.

Excessive AD login attempts

We have a UCS system configured for LDAP authentication against Active Directory. Everything is working as expected, but on the DCs we are seeing excessive failed login attempts originating from the fabric interconnect IPs against an invalid domain account. We are seeing anywhere from hundreds to thousands of attempts per day, so I don't believe these are due to invalid GUI login attempts or anything user driven. I've dug through the GUI but cannot find anything that would be using that account. The BindDN is set to use a different account created solely for this purpose. An example from the event log is posted below (192.168.32.12 is the primary FI). Any thoughts?
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Hi Brad,
I checked my lab setup and do not see anything similar, can you let me know the UCSM version and i can check for that specific version.
Is there is any other AD intergation? back-up job? KVM access etc?
feel free to open a TAC case if you wish to and we should to able to look into the logs and figure out if there is a request going out from UCS for authentication of a specific account.
Thanks!
./Abhinav

Failed Logins from external addresses

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This topic first appeared in the Spiceworks Community

You should adapt the menu.lst of the backed up OS like this:
# (0) Arch Linux
title Arch Linux
root (hd1,0)
kernel /boot/vmlinuz-linux root=/dev/sdb1 ro
initrd /boot/initramfs-linux.img
explanation:
- Your root should be (hd1,0) because the external disc is the second hard disc (assuming root=/dev/sdb1 is correct).
- The kernel and initrd line should have /boot, because you don't have a seperate boot partition.
Also, you didn't adapt your fstab of the backed up hard disk. In particular, you have to remove the entries for /boot, /home and swap. The entry of root file system is also wrong, because you still have the old UUID in it:
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
tmpfs /tmp tmpfs nodev,nosuid 0 0
/dev/sdb1 / ext4 defaults 0 1
Finally, I think not following the excludes in the wiki will also cause problems.

Router Source address for ACS Server

Does anyone know how to configure a router(MSFC in this case so the same ip address is sent to the ACS server for authenticating. The source address may not always be the same depending on the path taken, If the source address isnt an ip address configured for one of my devices the acs server rejects the attempt and the router defaults to local login. I tried settigng a loopback address and always telnetiing to the loopback address however the source address from the MSFC is not the loopback I have 38 vlans, snd i suppose i could configure thoe ip addresses under a device, however if iI add a vlan then I must remember to add that vlan to ACS. Im sure there is a simpler way to address this, I just cant seem to find the configs needed on the MSFC to make it work.
Any help will be greatly appreciated.
Thanks

Hi,
Sounds like you need:
ip tacacs source-interface interface-name
(or ip radius source-interface interface-name)
It's recommended to use a loopback interface, so this would give you (assuming loopback0):
ip tacacs source-interface loopback0
HTH - plz rate if it does
Andrew.

Ix4-300d : Remote access logging / unknown user / invalid login attempt

From time to time a customer of mine is seeing invalid login tries in the log ( mostly 'admin', 'Administrator', but also unconfigured names like 'grigor'?.
Is there any chance to determine, whether these login attempts (until now not successfull because 'non-common' passwords are used) come from inside or via <my-cloud>.mylenovoemc.com from outside?
Various PCs / Laptops ( sorry I still really love Dell and Fujitsu ;-))
Supporting Customers ix2s and ix4s -- Love Networking ( not only technically ).
I am not a Lenovo Employee.
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!

It should not put too much strain on the device, but it would make the dump log a bit longer. If you just got a dump report from the device without detailed logging should be able to get an IP address of the invalid attempt, so it may not be necessary to turn on detailed logging if you can get an IP address. Although if it is someone attempting to hack into the system, they are probably hiding their IP address anyway. Do they have a firewall on their network that could provide information about the source of the attempted login?
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Blackberry ID - forgot password, forgot password recovery info, exceeded login attempts, why can't BB send me email to reset password.

THE ISSUES ARE:
1. FORGOT PASSWORD
2. FORGOT PASSWORD RECOVERY INFO
3. EXCEEDED ATTEMPTS TO LOGIN
I HAVE READ OTHER PEOPLES FORUM PROBLEMS THAT ARE THE SAME. WHEN I FOLLOWED LINKS THAT SUPPORT GAVE THERE IS NO SOLUTION TO ACTUALLY FIX THE PROBLEM.
What I need is simply this: Blackberry to send me a RESET PASSWORD link to the email I have registered with Blackberry WITHOUT HAVING TO PROVIDE PASSWORD RECOVERY INFO. This will enable me to bypass unknown recovery password info and access my Blackberry ID account.
Why haven't I been able to find a solution to fix the problem?
BECAUSE IT DOESN'T APPEAR TO EXIST........ ANYWHERE..... EVEN ON YOUTUBE BLACKBERRY ARE RUNNING AN OUT OF DATE SOLUTION CENTRE.
When looked online to Blackberry youtube video it shows a solution that doesn't exist! WHY? BECAUSE IT WAS UPLOADED IN 2011. DUH. http://www.youtube.com/watch?v=lvdRb4qNG1M
If I can't remember my password or recovery password info there is NO other option available that will send me a reset password via email so I can keep my current BB ID.
KB34776 - does not apply because you HAVE TO BE ABLE TO REMEMBER YOUR RECOVERY PASSWORD!
CHECKED THIS OUT...
Workaround
If the BlackBerry ID password has been forgotten but the answer to the password recovery question is known, select Forgot Password on the smartphone and answer the recovery question to generate a password reset email. Follow KB28685 to complete this process.
If the BlackBerry smartphone user knows the email address used for the BlackBerry ID login but is unable to remember the associated password then it is possible to reset the password using the steps below:
Note: If the BlackBerry ID account is not confirmed, it is necessary to provide the answer to the password recovery question as part of the web based password reset flow.
To see if a BlackBerry ID account is confirmed, log in to the BlackBerry ID account, select Account Details and locate the Email Status field.  For instructions on confirming the BlackBerry ID account follow KB34137.
Browse to the following URL using a desktop browser, the BlackBerry Browser on the BlackBerry smartphone, or the Browser on the BlackBerry PlayBook: http://blackberryid.blackberry.com/bbid/recoverpassword
Enter the BlackBerry ID Username (email address) and the CAPTCHA characters, then clickSubmit.
Enter the Answer to the Password Recovery Question, then click OK.
Note: Answering the recovery question is only required if the BlackBerry ID account is not confirmed.
A confirmation message will be displayed A password reset email has been sent to [email protected], at which point, a reset email will be delivered to the associated email address inbox.
Log in to the email account associated to the BlackBerry ID using the desktop browser, BlackBerry Browser on the smartphone, or the Browser on the BlackBerry PlayBook.
Locate the password reset email and select the Change your BlackBerry ID password link.
Note: The BlackBerry ID reset email will come from [email protected]. If the email is not found in the inbox, check the mailbox's Spam or Junk folder.
When the password reset page loads, enter the Answer to the Password Recovery Question, enter the New Password, Confirm Password, then click Submit.
A confirmation message will display once the changes have been saved successfully.
Moving forward use the newly created password whenever logging into BlackBerry ID.
If the BlackBerry smartphone user does not know the email or password that was used for the BlackBerry ID, the BlackBerry ID will be locked out after 10 unsuccessful login attempts. See KB24157 for BlackBerry ID lockout behavior.
THEN CHECKED KB24157......
Overview
BlackBerry ID is the master key to BlackBerry smartphone products, sites, services and applications, including BlackBerry Protect and the BlackBerry App World storefront.
To prevent unauthorized access to the account, the BlackBerry ID will become locked out after a number of failed attempts. See the information below for an outline on the expected behavior:
Local Authentication Lockout
On BlackBerry PlayBook and BlackBerry smartphones if the user enters their BBID password incorrectly 10 times on the BBID sign in screen, verify password screen, or BBID Edit screens, they are LOCKED OUT of all the following functions on that BlackBerry device for 15 minutes:
Authenticating with their BlackBerry ID on the sign in screen
Authenticating with their BlackBerry ID on the verify password screen
Authenticating with their BlackBerry ID on the BBID edit screens
Note: The user can still log in on the web or any other devices associated with their BlackBerry ID. They are only locked out on the device where the 10 incorrect attempts occurred. On the locked out device, after 15 minutes, they get 1 try to provide the correct password on the sign in and/or verify password screens. If they fail to enter the correct password, they are locked out for an additional 15 minutes on that device.
Account Server Lockout
Users have total of 10 attempts to enter their password correctly against the BlackBerry ID Account Server.
The scenarios that increment the Account Server lockout counter are as follows:
Providing an incorrect password anywhere on the BlackBerry ID web portal (blackberry.com/blackberryid)
Providing an incorrect password within the BlackBerry ID Edit feature on any BlackBerry device or BlackBerry PlayBook
Note: if a user provides an incorrect password 5 times on the BlackBerry ID web portal (blackberry.com/blackberryid), and then 5 more times on the BlackBerry ID Edit feature on their BlackBerry PlayBook, the cumulative number of failed attempts is 10. Once the user has made 10 incorrect attempts to provide their password against the Account Server, they are locked out of the Account Server PERMANENTLY until they reset their password.
See KB26361 for information to reset a BlackBerry ID password
Note: The Account Server Lockout does NOT prevent the user from local authenticating on devices (the user can still authenticate on the sign in and verify password screens on their BlackBerry devices).
Forgot Password Lockout
If the user answers their Security Question incorrectly 10 times, they are locked out for 15 minutes of Forgot Password functionality on all interfaces such as:
BlackBerry website (blackberry.com/blackberryid)
BlackBerry PlayBook
BlackBerry smartphone
Note: After 15 minutes, they get 1 try, and if they fail to answer the question correctly, they are locked out for an additional 15 minutes.
THAT DIDN'T WORK SO NOW ITS BACK TO..... KB26361
Overview
To change the BlackBerry ID password, complete the steps below for the specific device:
From the BlackBerry 10 smartphone:
Swipe down from the top bezel on the home screen and select Settings.
Scroll down and select BlackBerry ID.
Select Change Password.
Enter the current password in the Current BlackBerry ID Password field.
Enter the new password in the New BlackBerry ID Password and Confirm New Passwordfields.
Select Submit to complete the password change.
To confirm the change You have changed your password will be displayed.
Also, if the BlackBerry ID password has been forgotten, select Forgot Password on the smartphone and answer the recovery question to generate a password reset email. Follow KB28685 to complete this process.
Note: When using the recovery question password reset method, the generated email will be delivered to the BlackBerry 10 smartphone if the BlackBerry ID email address has been setup via Settings >Accounts
From a computer:
Visit http://www.bbid.com/ from a PC or BlackBerry smartphone browser.
Click Log in.
Enter the BlackBerry ID Username (email address) and password, then click Sign In.
Click Account Details.
Next to Password, click Edit.
Enter in the current password, followed by the new password. Enter the new password again in the confirm password field, then click Save.
Click Done to exit from the BlackBerry ID account information screens.
From the BlackBerry smartphone running BlackBerry 6:
Navigate to Options > Third Party Applications > BlackBerry ID.
Click on Change next to BlackBerry ID Password.
Enter in the current password, followed by the new password. Enter the new password again in the confirm password field, then click OK.
A confirmation message will display Your password has been successfully changed.
Click OK.
From the BlackBerry smartphone running BlackBerry 7:
Navigate to Options > Device > BlackBerry ID.
Click on Change next to BlackBerry ID Password.
Enter in the current password, followed by the new password. Enter the new password again in the confirm password field, then click OK .
A confirmation message will display Your password has been successfully changed.
Click OK.
From the BlackBerry Playbook tablet:
Navigate to the Options icon.
Select BlackBerry ID.
Click on the Edit button next to Change Password.
Enter in the current password, followed by the new password. Enter the new password again in the confirm password field, then click Submit.
A confirmation message will display You have changed your password.
Click OK.
If the password for a BlackBerry ID account has been forgotten and the login is unsuccessful, use the following process to reset the password.
Note: If the BlackBerry ID account is not confirmed, it is necessary to provide the answer to the password recovery question as part of the web based password reset flow.  To see if a BlackBerry ID account is confirmed, login to the BlackBerry ID account, select Account Details and locate the Email Status field.  For instructions on confirming the BlackBerry ID account follow  KB34137.
To generate a password reset email, complete the following:
Browse to the following URL using a desktop browser, the Browser on the BlackBerry smartphone or the Browser on the BlackBerry PlayBook: http://blackberryid.blackberry.com/bbid/recoverpassword
Enter the BlackBerry ID Username (email address) and the CAPTCHA characters, then clickSubmit.
Enter the Answer to the Password Recovery Question, then click OK. (Answering the recovery question is only required if the BlackBerry ID account is not confirmed)
A confirmation message will be displayed A password reset email has been sent to [email protected] , at which point, a reset email will be delivered to the associated email address inbox.
Login to the email account associated to the BlackBerry ID using the desktop browser, BlackBerry Browser on the BlackBerry smartphone or the browser on the BlackBerry PlayBook.
Locate the password reset email and select the Change your BlackBerry ID password link.
Note: The BlackBerry ID reset email will come from [email protected] If the email is not found in the inbox, check the Spam or Junk folder.
When the password reset page loads, enter the Answer to the Password Recovery Question, enter the New Password, Confirm Password, then click Submit.
Note: Answering the recovery question is only required if the BlackBerry ID account is not confirmed.
A confirmation message will display once the changes have been saved successfully.
Moving forward use the newly created password whenever logging into BlackBerry ID.
Note: If the BlackBerry ID email address is a BlackBerry mail address (e.g. <username>@tmo.blackberry.net), the BlackBerry ID password reset email will not be received on the BlackBerry smartphone. Since the BlackBerry mail address is not accessible from a computer, the steps outlined in KB28111 will need to be performed.
IT ALL LEADS BACK TO THE SAME UNHELPFUL NON-SOLUTION OF USE THE PASSWORD RECOVERY QUESTION....
Can the tech department of Blackberry please sort out this ridiculous unhelpful system by sending customers a direct email if password is forgotten so they can reset without having to go through the above without finding a solution.
THANK YOU.

Hi and Welcome to the Community!
Please see this "sticky" post, along with the threads to which it links, for helpful information to guide you as you proceed:
http://supportforums.blackberry.com/t5/Social-Lounge/How-This-Site-and-Formal-Support-Work/td-p/2540...
Hopefully, this information will be of use to you.
That said, it sounds like you have exhausted all of the automatic recovery methods...but just in case, please see this "sticky" post for helpful information concerning your BBID situation:
http://supportforums.blackberry.com/t5/BlackBerry-World/How-to-regain-access-to-your-BBID/td-p/25467...
Hopefully, this information will be of use to you.
But do please keep in mind that security is a 2-way street...the human element play an equal part in that security, and you have failed at that in this situation, yet desire for the automated methods to still recover for you. Such just isn't possible, because your failure has exceeded the capabilities of the automated methods.
Hence, you likely need human intervention from an actual BB representative, which is not available in this forum (as discussed in the first link I gave you above). But, the methods to attempt to seek human intervention are posted within the 2nd link I gave you.
Cheers, and Good Luck!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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To send a mail for failed login attempts,.

We have to implement the mailing system in linux.,to send the mail regarding failed login attempts and ip address of user who attempted the failed login.,any one have the idea on this?
Regards.,
Vaaru

Running an old beta version of RHEL is a bad idea. If you are concerned about security and operation of your OS I suggest to use a more recent release version. You can download, install and use Oracle Linux for free.
Mail processing of failed login attempts is not a good idea and to my knowledge there is no such built-in system setting. I suggest you read the standard documentation or search the Web for information on how to set up a mail system. You will probably need to create a custom script to process failed login attempts.

Anyone know's how to make isight camera take snapshot for failed login attempts ?

I want my macbook pro to take pictures with the isight camera when someone has a failed login attempt ; anyone know of any programs and or apps ? I've searched all over & even called apple support and no luck.
Thanks !

Jkensuke wrote:
If I want to count the number of failed login attempts what might be the best course of action?
Off the top of my head I figure I could:
Have a session variable that counts up to number X
Have a cookie variable
Insert the users IP address into a database table for each failed attempt and when the form loads I check to make sure there aren't X number of strikes in the last 30 minutes.
A combination of those might be a good idea. Most hackers are, luckily, amateurs with one-track minds. Create a database table to log failed login attempts. For every failed attempt, log at least the datetime, IP, sessionID, username (which should be unique on your site), reason for failure and failure count.
In a query following a failed login, verify whether the IP, sessionID or username match any in the failed_login table, and, if so, whether the current datetime is within, say, 12 hours of the last failed login. If yes, increment the failure count by 1. If no, insert a new row in the table.
Use client-friendly messages to inform your visitors why their login fails. Study failed logins for common patterns. It just might be that you are the culprit, and that you have to improve your login design. There is one good reason for doing all that. Then you will know that those in your failed_login table really had it in for you.
If your site traffic is high, then consider archiving old data. Throw nothing away!

FTP Security - Repeated Login Attempts

Over the past 2 weeks or so, i've seen about a bazillion of these types of entries in the system log of one of our ftp servers:
Aug 21 03:39:22 ns ftpd[4099]: ACL Check failed for Administrator
Aug 21 03:39:22 ns ftpd[4099]: ACL Check failed for Administrator
Aug 21 03:39:22 ns ftpd[4099]: ACL Check failed for Administrator
Aug 21 03:39:23 ns ftpd[4099]: repeated login failures from atlantis @ 83.143.18.134 [83.143.18.134]
Obviously, someone is trying to gain access (unsuccessfully - thank goodness) to the system. The repeated login attempts last anywhere from 5 - 30 minutes, always with the username Administrator. The IP addresses are from all over the world - Europe, Asia, and the US. Why we have a bullseye on us all of a sudden is unknown. This server has been running for close to three years now, and I've never seen attempts with this frequency.
The Administrator user doesn't have ftp access on this system, so I'm not too worried about these break - in attempts. (Or should I be?)
My formal question is this - is there anything that can be done with the out of the box ftp server to deter these attempts, or at least block attempts by IP address temporarily after several failed logins?
What approach have others used? Is it time to start looking at another ftp server software package that has more security settings?
Any help / input would be appreciated.
I miss my Apple IIc Mac OS X (10.4.6)

Thanks for the feedback Camelot. I'll post my replies under the quoted text below.
If you're running a public server you're going to get
hits you don't want. Fact of life.
Script kiddies around the world are going to try
whatever username and password they can think of to
log into your server.
Having a different FTP server isn't going to change
that - any other server is just as vulnerable to
brute-force attacks as the built-in server. How do
you think a different server is going to react any
differently?
I don't know - that's why I asked.
I've only used the bundled ftp server with OS X server. I was wondering if there was a ftp software package that temporarily blocked IPs after 'n' number of invalid login attempts or something like that. And thought I'd see if anyone had any experience in this department.
Your only safeguards are some combination of:
1) use your firewall to restrict access to the server
to known/trusted IP addresses
Unfortunately, a few of our users use dynamic IPs. Which is a bummer.
2) use a VPN to connect to the server, then connect
to the internal address
We've used this method successfully before. We might go back to it...
It was a 'pain' for some of our remote users and I finally gave into the nagging to do away with it because I spent way too much time providing phone support for remote users. I know, I know, it's just laziness on my part.
3) use a different protocol that supports public key
authentication (and turn off password
authentication), e.g. SFTP.
I've looked into SFTP for the OS X ftp server on these boards and most discussions don't seem to resolve into a definitive solution for implementing SFTP on the OS X server. Anyone get this working properly? I'd love to set it up to support SFTP only and disable password authentication.
I'm leaving the original question open - I'd like to know if there is ftp software that works well on OS X server that would temporarily block an IP after 'n' invalid attempts, or has something similar.
Or for someone to tell me I'm just being paranoid - and that the current setup should be OK.

Random crashes! and mysterious stealth login attempt!

Dear Administrator,
My iMac recently has crashed a few times without much activity on user's part. I checked console messages and does not find any error messages. There are a number of stealth login attempt from IP address: 69.25.XX.XX. I suspect that some one is attacking my computer. Please help. I was going to include the console messages in this posting, but the messages has been swamped out by
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.7xAVxO
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.5GMnuZ
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.jiicmR
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.vsn7jN
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.KyjbYa
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.sXoeDw
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.22sVKz
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.oD9dkz
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.sHWdXR
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.VeDo4m
6/26/12 8:56:55 PM
sandboxd[2102]
mDNSResponder(18) deny file-read-data /private/var/db/com.apple.parentalcontrols.keychain.gBEOIc
Literally thousands of these were listed in all messages.
Please help.
Sincerely yours,
Zigang Pan

The "crashing," whatever you may mean by that, has absoutely nothing to do with these stealth mode connection attempts, which we all get. When in stealth mode your computer is invisible to any connection attempts like this. You are behind a firewall. No one is attacking your computer.
FYI:
You should, instead, be looking at the crash logs or kernel panic logs, if you got a message to restart, and trying to determine just what was happening when the crashing occurred. You should also explain what you mean by "crashing." Just what was happening?
Looks like you have parental controls set up for this account. That's what all these "denys" from Keychain are reflecting.

How is NTP reply routed when requesting router uses loopback as source address

The Cisco NTP Best Practices White Paper and DISA STIGs recommend setting the NTP source address to a loopback interface (e.g. "ntp source loopback0").
But this only seems to work if the requesting (NTP client) router is the default gateway for the NTP server.
Specifically, the NTP server will attempt to reply to the requesting router's loopback-based source address (taken from the NTP request packet). Since that address will always be non-local from the perspective of the NTP server, the NTP server will encapsulate the reply in a Layer 2 frame addressed to its default gateway. If the gateway was the source of the original NTP request, that should work. But in most other situations that gateway won't know how to reach a loopback-based address, and will discard the reply.
I have verified this in tests with routers running both 12.4 and 15.1 releases (and NTP debugging enabled). When the NTP source is a loopback address, NTP replies never reach the requesting router. With the default NTP source address (i.e. based on the exit interface) everything works fine.
Obviously, you could employ workarounds, such as static routes or injecting loopback addresses into your routing protocols. But that seems uglier than leaving NTP source addresses at their defaults.
Why is this "best practice" so commonly advocated without mention of some significant caveats regarding routing? Am I missing something?
Thanks,
Mark

Michel:
Thanks for the response. Actually, I understand what kind of routing workarounds could allow NTP to function in spite of this "best practice." But I am mystified as to why a Cisco "NTP best practice" paper (http://www.cisco.com/en/US/tech/tk869/tk769/technologies_white_paper09186a0080117070.shtml) and various security policies would call for setting a loopback address as the NTP source when that practice will often cause more problems than it solves.
The stability of a loopback address is nice when that address is used to uniquely identify the platform for a routing protocol or syslog. A loopback-based source address can also simplify ACL management, since that address won't change if an interface or link failure forces the router to send traffic from a different interface. But I keep seeing security configuration guides/policies that call for also using a loopback address as the source for two-way protocols, such as FTP and NTP. That just doesn't make sense to me when you balance the routing implications against the limited security benefits (stable device identification, simplified ACL maintenance, and obfuscation of device addresses).
I was hoping to learn that some obscure command might allow me to control which NTP exchanges use the loopback-based source address. For example, the loopback source address would work fine on outgoing NTP broadcasts (and probably in replies from NTP servers). But I would prefer that NTP client requests use a source address based on the exit interface. That way replies can be routed back to the client without cluttering up routing tables with routes to loopback addresses.
So far, it looks like I'll need to chalk this up to poor coordination between the network security and network administration communities.
Thanks again,
Mark

Report to show all failed login attempts in B1 system

Hi,
Please advise is there anyway to view all failed login attempts in B1 system.
Regards,
Priscilla

Hi Priscilla,
Unfortunately, all failed login attempts are stored on each clients' local drive. There is no table to hold them.
Thanks,
Gordon

Login Attempt Source Address?

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