How Do I Stop Attacks On Mail Server
Dec 6, 2008i am getting hundreds of theses in my mail log each day, trying different names etc and want to put a stop to them and auto ban the ips.
I have APF
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Security To Stop DDoS Attacks And Stuff
May 19, 2009My host tells me that they have security to stop DDoS attacks and stuff, however today my server load jumped to 17.12 and my site went down giving me a "Network Timeout" error.
My host tells me it's my fault that I am using too many resources. The MOST my site has been on load is 3.06 and that was around lunch time a few weeks back. It's 11:43 and the server load is 17.12? I think my host is pulling my leg. I have not added ANYTHING new to my site and have not changed anything in 3 days. The load has been fine till today.
I use In Motion Hosting.
How To Stop Mail-server Abuse
Mar 30, 2009in the last 2 weeks has increased the spam mail to external users using our mail accounts.
So a user receives spam believing that it is sent from our sites.
I think the best method is to create a txt file in dns but I have many doubts about how to proceed.
Looking at one of the e-mail back to our mail server I see that emails are sent via outlook.
This is an example of the emails: ...
Mail Attacks
May 9, 2007I seem to be getting a lot of mail attacks to accounts located on the server. However, most of the email addresses do not exist and therefore the emails are bouncing back and getting stuck in my mail queue manager. There are something like 20 emails per minute getting stacked up in there and it is causing a massive load on the server.
How can I stop these attacks?
Mail Proxy: How To Stop CGI Mail Proxies
Jun 20, 2009During last week, two of our clients' accounts got compromised (most probably due to weak passwords) and there was a CGI script installed which started sending emails to more than 200,000 email accounts. This email addresses were stored in a text file.
By the time we noticed this activity, our server got black listed on major RBLs like Barracuda, SpamCop, Spamhaus etc and it took around 2 days to cleanup
3 days later, another account compromised with same *thing* and it really is pain in the arse now dealing with this and angry clients
We've already implemented a policy to restrict users to send 100 messages/per hour/domain which is working, but it seems this *thing* bypass exim.
I guess this Open Proxy Servers a Source of Spam is what i want to explain!
So my question is, if I've understood this right, is it possible to stop scripts like this or can we enforce mailman to use exim all the time to send messages and stop direct-mailing?
How To Stop Send Mail Spam
Jan 17, 2008I check and see many email was sent from my domain but i dont do it, how to stop this problem ?
View 2 Replies View RelatedMSSQL Server Attacks
Oct 11, 2009I can see lot of MSSQL Server attacks. In event viewer "Login failed for user 'sa'. [CLIENT: Some IP]"
Most of the attack coming from Chaina. Tipically what I'm doing manually is get that entire IP range and block from Windows Firewall level.
Now I have plenty of blocked IP ranges all over the world.
What would be the best way to avoid from those kind of attacks ?
UDP Game Server Attacks
Apr 30, 2008there are some game types out there that are not protected from any type of udp flood attack. I have been doing a lot of work (my servers are linux) and blocked this by coding a bash script running every second checking tcpdump for the amount of current UDP connections and blocks the ip witch has more than a certain number of current UDP connections. This works perfeclty, but it firewalls the ip AFTER the attack started.
I am really interested into blocking this attack fully. Limiting the number of current connections (UDP) from an ip to a certain amount to block this attack totally. I have been looking around a lot and have had no luck. From what I have found, there is no way to do this with iptables or ipchains. It is possible for TCP though, but I could not find it for UDP. Could anyone help me out here.
Just to let you know, I do run a firewall, but it would never pick up this type of attack unless it was major. This is more like a game type bug (firewall thinks the packets are fine, player packets going to the game server).
How Can I Secure My Server Against Spam Attacks?
Mar 25, 2008I have a cPanel dedicated server and have a lot of spam attacks on this server. It's getting so bad that our IP is being added to Yahoo & AOL blacklists and my emails are bouncing to these accounts.
Is there anyone on here who can do a thourough check on our server and install anything necessary to stop this kind of activity?
C99Shell :: Protect My Server For Shell Attacks Via C99 And H57?
Sep 1, 2008I have few scripts, but hackers again upload at some way c99, and hack some SMF forums at server. Server like server they cannot hack, but user account they can. So please tell me what you advice?
View 6 Replies View RelatedHow To Secure And Harden Centos Linux Server From Vulnerabilities & Threats ,attacks
Jul 28, 2009How I can secure my server from vulnerabilities and threats and ddos attack? How can I find my server is compromised or hacked?
Which ports I should check, what commands I should fired on shell prompt? which softwares you will recommend.
How I Can Stop Spammer From My Server
Jul 14, 2008How i can stop Spammer from my server?
my control panel is CPANEL !
what software i must install?