Protect Companies Servers From Brute Attack?

Jun 30, 2008

Alright so we have found someone hacking web hosting companies servers by brute attack.

How do we protect ourselves from this and all other hacking attacks?

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Brute Force Attack On VPS

Jul 1, 2008

Today I woke up to a couple of emails from people in China and India trying to break into my server. Then as I went to login to WHM I get this message:

This account is currently locked out because a brute force attempt was detected. Please wait 10 minutes and try again. Attempting to login again will only increase this delay.

If you frequently experience this problem, we recommend having your username changed to something less generic.

Are there ways that I can prevent these attacks? I know that the IPs involved are getting banned, but are there any other methods I should be taking?

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Brute Force Attack

Mar 11, 2008

I have a managed VPS and I haven't really ever paid too much attention to the logs until now.

I noticed that the APF logs indicate a 2-5 attacks on my server attempting to log in via ssh. My system allows 10 minutes of log in failure attacks before apf bans the ip.

To eliminate the method of attack, I see 2 ways. One way is to change the SSH port; the second is to only allow ssh via specified ip's.

What are the pro's and con's of both... also are there other ways to eliminate these attacks via ssh?

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DoD Brute Force Attack

Jan 14, 2007

Ok, this is weird. What do you do when your VPS was submitted to a brute force attack from the U.S Department of Defense?

The IP Whois and Reverse DNS gives me "DoD Network Information Center", why in the world would they try to force access to a small (less than 20 clients) Canadian host?

And in case you're wondering, they don't seem to have any abuse email address.

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Brute Force UDP Attack On SSH Port. . Possible/why

Nov 24, 2007

my server is being brute force attacked at port 22.. It caused my server to be blocked by my ISP's upstream...

at first I follow the instruction on this forum showthread.php?t=456571 (can't post link)

but then I realized (from the upstream email, I don't have access to any log on their side) that it was UDP.. not TCP.. but it was said to be brute force attack on SSH port.

Now all I do is moved ssh port.. and then limit the max connection per minute to port 22/UDP like on the above tutorial page..

Is that enough? I can't use IPTables to permit specific IPs, I'm pretty much very mobile so my own IP is different each time.

Any ideas why UDP attack?

Is it possible that brute force attack turned out to be UDP protocol? cause if it's not, then I think my ISP/its upstream can't be trusted..

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IIS FTP Brute Force Attack How To Prevent At Network Level

Jan 21, 2008

I am getting a few hundred IIS 6.0 FTP login attempts a second on my windows 2003 x64 server.

We have a Sonicwall TZ180, a full IPS and Firewall in front of the server but I cannot determine a way to block these attacks. I simply have port 25 open to all ip addresses, as I do not know a range of valid ips.

Is there any way to prevent these attacks at the firewall/hardware level? I suspect not, because the firewall doesn’t know if a login attempt is valid or not.

I have enabled IPS on the firewall but doesn’t appear to be stopping these attacks. Is there any way to automatically ban ips that hit port 25 X number of times in a second?

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Bot Attack, How To Protect Server

Oct 22, 2009

how to protect an linux dedicated server from bot attack. Im using linux server with cPanel, using CSF firewall + DOS Deflate.

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Better Way To Protect My Server From DDos Attack?

Jun 25, 2008

today i have DDos Attack in my server in port :80

what is the better way to secure my server from DDos Attack

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Are There Any Companies That Can Help Us Migrate Servers (whm)

May 24, 2007

We will be soon migrating to a bigger more powerful server and we were wondering if there was any companies that can do a nice job regarding this matter...

We found rack911.com but we were wondering if there were any others and if you had any experience with them.

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Companies That Build Servers And Ship?

Mar 9, 2008

are there specific companies that build servers for you and then you have it shipped?

also how much bandwidth should one be using to consider a switch to colo from dedicated?

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How To Password Protect Web Pages, I Can Protect Directories But Can't Put Pages In

Mar 4, 2007

i did make a big message on here but it deleted when i back spaced

my website is aviation cafe dot net / sample and i need you to help me with password protecting a webpage, i wanted the address to be / the silver sword and definitly not to look like it does now.

username: webforum
pass: password

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FTP Brute Force

May 19, 2008

I checked my attachments folder in WHMCS dir

There was a file ftpquickbrute_08.05.2008_10_47_08.log
Opened it up it says:

Quote:

FTP Quick Brute (called c99shell v. w4ck1ng-shell (Private Build v0.3)) started at 08.05.2008 10:47:21

No success. connections!

------------------------------------------
Done!
Total time (secs.): 3.2036
Total connections: 101
Success.: 0
Unsuccess.:101
Connects per second: 31.53

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Flood In FTP And Brute Force

Oct 27, 2008

flood in FTP and brute force

all day i receved msgs of BFD someone trying acess server, how to stop it, exemple:
Executed ban command:

/etc/apf/apf -d 221.186.164.233 {bfd.pure-ftpd}
The following are event logs from 221.186.164.233 on service pure-ftpd (all time stamps are GMT -0500):

Oct 25 13:52:37 svr1 pure-ftpd: (?@221.186.164.233) [INFO] New connection from 221.186.164.233
Oct 25 13:52:37 svr1 pure-ftpd: (?@221.186.164.233) [INFO] New connection from 221.186.164.233
Oct 25 13:52:38 svr1 pure-ftpd: (?@221.186.164.233) [WARNING] Authentication failed for user [router] ....

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Brute Force In CPanel

Nov 2, 2008

Over the last few weeks I've been getting emails from WHM stating "x login failures attempts to account root (system) -- too many attempts from this ip"

These emails have been coming in almost hourly and it seems as though somebody is trying to guess the password to the root account and random other accounts.

For now I reduced the amount of failed login attempts to 2 before cPanel blocks the IP.

Is there any other way I can completely stop this person from even attempting to guess my passwords?

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Brute Force Attempted Through SSH

Mar 17, 2008

For a company I'm working at, two nodes have been brute force attempted through SSH. I've got the logs from both servers in front of me, but could anyone enlighten me of who the ISP is?

ISP: host-80-241-179-30.deltanet.ge

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Brute Force Detection (bfd)

Apr 6, 2007

ive just installed bfd on a new server:

[url]

And im getting the following in an email every 10 minutes:

Code:
/usr/local/bfd/conf.bfd: line 26:
: command not found
/usr/local/bfd/conf.bfd: line 38:
: command not found
/usr/local/bfd/conf.bfd: line 47:
: command not found
/usr/local/bfd/conf.bfd: line 59:
: command not found
/usr/local/bfd/conf.bfd: line 60:
: command not found
/usr/local/bfd/conf.bfd: line 76:
: command not found
/usr/local/bfd/conf.bfd: line 88:
: command not found
The email is being sent from:

Cron Daemon <root@hostname.com> (replaced hostname myself)

Now i know this isnt r-fx networks support but none of there support options seem to work so i figured id post here considering the amount of users that are likely to be using bfd (or you should be)

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Anti Brute Force Protection

Apr 30, 2009

I have some windows 2k3 and 2k8 win servers and now i must to protect..

I need best free/commercial solution for firewall and anti brute force protection.

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WHM/Centos/VPS Having Brute Force Attacks

Jan 29, 2008

I am getting these types of reports in my nightly reports:

=================
sshd:
Authentication Failures:
unknown (bips131.bi.ehu.es): 212 Time(s)
mail (bips131.bi.ehu.es): 4 Time(s)
news (bips131.bi.ehu.es): 4 Time(s)
root (bips131.bi.ehu.es): 4 Time(s)
unknown (swplinux02.swp.ewr.qwest.net): 1 Time(s)
Invalid Users:
Unknown Account: 213 Time(s)

Two nights ago:

--------------------- pam_unix Begin ------------------------

sshd:
Authentication Failures:
unknown (195.251.109.21): 413 Time(s)
root (195.251.109.21): 108 Time(s)
webadmin (195.251.109.21): 18 Time(s)
root (200.55.193.59): 16 Time(s)
daemon (195.251.109.21): 8 Time(s)
ftp (195.251.109.21): 5 Time(s)
root (218.19.69.193): 4 Time(s)
Invalid Users:
Unknown Account: 413 Time(s)
===============

My VPS support said I could try:

-alternate sshd port
-require key access
-selecting client ip access
-rate limit incoming sshd syn packets per src address

However, I need some help understanding the best way to address these so that these brute force attacks aren't successful.

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Brute Force Warning - 11 In 2 Days

Dec 13, 2007

over the last 2 days I've gotten 11 emails telling me about brute force detections on my server, the vast majority of them are for sshd from different IP's.the number of events ranges anywhere from 11 to 515.

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The Best Firewall And Brute Force Attacks

Jul 10, 2007

What is everybody using?

Is there a "Best"

What do you guys recommend?

I have read about the CSF, is this any good?

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Avoiding Port Scanning And Brute Force

Oct 28, 2009

I get a lot of messages from CSF about Port Scanning and Bruteforce detection.. Is there a way to avoid all of these attacks ? Because it tries to figure out my clients ftp or pop3 user with several usernames, i.e. administrator, postgres, mysql, httpd, and many more..

I know a little about internet security.. Is it possible to make my public IP of shared hosting untraceable ? Like this one..

Just do a ping to ebay.com or paypal.com and then you will receive RTO message or Destination host unreachable, but actually the site is running well..

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How To Protect Port 80

Nov 2, 2007

someone attacking my VPS via port 80, which firewall u advice me to use on windows 2003 WEB edition ?

Or anyone have smillar experiance and can tell me what to do? Btw my hosting company is LeaseWeb.

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How Do I Protect My Website

Jun 29, 2009

This is probably a pretty complicated answer so please forgive me as I'm a newbie to making my own ecommerce website.

What steps are needed to protect/prevent one's site from being hacked? I have domain privacy (on WhoIs) but I feel this isn't enough.

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Way To Protect URLS

May 23, 2009

Are there any scripts out there that can protect URLs? For an example I am trying to protect a megaupload.com URL with a masking URL and making sure that the masking URL is only access by a referral site. Can this be done?

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Protect Directory

May 22, 2007

i have another question is their a way to protect a directory without using .htaccess because i dont have modrewrite installed on my apache server.

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How To Protect Website

Feb 20, 2007

Last days my site was hacked to the main page has been added the "iframe" tag with path to the virus loading. I don't know how somebody could edit the original page and insert this code to the html body. This time I have updated this page from archive but I would be glad to know how to protect my site in future. Could somebody advice me fast and effective methods?

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How To Protect Cpanel And Whm

Dec 28, 2007

what is the best way to protect whm and cpanel from unwanted login?

If i change the port they still can sniff, is there away to put another layer to protect it or assigned specific ip to be able to login ? I'm on a dedicate server and only hosting for 1 site so there no customer that i should worry about.

can i change /whm and /cpanel to something else just to hide it form novice users.

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How To Pwd Protect Directories Without Cpanel

Jul 28, 2009

how to pwd protect directories with when using no control panel, I am planning to change the login details of the protected directories every few days as well as its top secret data, so I would like to know how to protect directories with pwd, I know how to do using control panel such as cPanel r Plesk but I am having no control panel at this interface

I intend to share the files under this protected directories only to my team, so plz help me with codes if there are any

its cent 0s5, apache handler

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How To Protect Reverse IP Information

Apr 10, 2009

is it way to protect Reverse IP information ?

I mean someone can't see friend sites in same vps/server.

This is my domain ( godaddy )
[url]

And another domain ( not me )
[url]

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