What Is Best Rootkit-detector And Firewall
Jun 19, 2008I was following this guide: url]
It's very nice but, 4 years old. So now I am wondering what is best rookit detector, and what is best firewall for centOS 5.
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AV, Anti-RootKit, And Firewall For Dedi
Nov 15, 2008trying to secure my new server that will be opening for shared hosting.
So far I've found:
CHKRootKit, RKHunter, and ClamAV
As for Firewall, I've setup CSF but my question is, what is a good setting for blocking SYN Floods without blocking clients who might be browsing their site and, using DA, and FTP.
In the past I've used:
iptables -A INPUT -p tcp --syn -m limit --limit 1/s --limit-burst 3 -j DROP
iptables -A INPUT -p tcp --syn -m limit --limit 3/s --limit-burst 5 -j DROP
and took down some pretty big attacks, but it was very touchy.
Bruteforce Detector For FreeBSD
Jun 5, 2008I didn't find any bruteforce detector for FreeBSD, so just sharing a simple one I coded in case anyone is interested
I'm running it on cronjob each 5 minutes
any contribution is appreciated (maybe using BerkleyDB, but I don't think it will help unless you get a really big blacklist)
new version
I believe it's working correct now
changes
- not blocking 127.0.0.1 anymore (it could happen when some there are failed attempts to login using webmail, for example)
- it wasn't unblocking the IPs after the "timetoban" because ipfw didn't work the way I expected (you can't delete a rule by giving the rule, you must give the rule number)
If I knew that, I'd use another approax, but since it's already done, I just did a quick & dirty fix and it works now ....
Rootkit :: No Rootcheck_files
May 19, 20092009/05/19 03:15:01 ossec-rootcheck: No rootcheck_files file: './db/rootkit_files.txt'
2009/05/19 03:15:01 ossec-rootcheck: No rootcheck_trojans file: './db/rootkit_trojans.txt'
How can i 'fix' this?
Other Rootkit Finders & IDS
Aug 2, 2009other options over chkrootkit and rkhunter since they are pretty outdated, and so far have found:
Curuncula:
[url]
Unhide:
[url]
Rootkit Hunter
Nov 14, 2008how i can install rootkit hunter on centOs?
and is it different with CHKROOTKIT?
How-to - Rootkit Scan (trojan Etc)
Jan 21, 2004What is a rootkit? The following link is a very good read to answer that question.
http://linux.oreillynet.com/pub/a/li...4/rootkit.html
In Summary, a rootkit is a trojan installed on your Linux server after someone has broken into it. These files are used to cover the hackers tracks, and to give the hacker tools to do more dirty work from your server.
Usage:
1. su - (change to root user)
2. mkdir /usr/local/chkrootkit
3. wget ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz
4. tar -xvzf chkrootkit.tar.gz
5. cd chkrootkit*
6. cp * /usr/local/chkrootkit
7. cd /usr/local/chkrootkit
8. make sense
Now scan your system:
1. cd /usr/local/chkrootkit
2. ./chkrootkit
chkrootkit may from time to time give false positives. If you ever get a positive or "infected hit" scan a second time. If you do get a positive hit, google the hit to research the issue and steps to correct.
Part 2 - automated chkrootkit, and emailed results.
I'm lazy, and like my server to do the work for me so I have it scan every day, and email me the results.
Usage:
1. vi /etc/cron.daily/chkrootkit
2. add the following code.
Code:
#!/bin/bash
(cd /usr/local/chkrootkit; ./chkrootkit -q 2>&1 | mail -s "Daily chkrootkt scan" you@yourdomain.com)
3. chmod 0755 /etc/cron.daily/chkrootkit
This will email you@yourdomain.com every morning with your chkrootkit results. the -q option will only show you exploits.
Removal:
If you don't like getting the emails or just want to remove this from your server:
1. rm /etc/cron.daily/chkrootkit
2. rm -rf /usr/local/chkrootkit
All files will now be deleted from your server.
In Rootkit Hunter Scan
Jun 26, 2009how to correct it?
Code:
---------------------- Start Rootkit Hunter Scan ----------------------
Warning: Checking for prerequisites [ Warning ]
The file of stored file properties (rkhunter.dat) does not exist, and so must be created. To do this type in 'rkhunter --propupd'.
Warning: WARNING! It is the users responsibility to ensure that when the '--propupd' option
is used, all the files on their system are known to be genuine, and installed from a
reliable source. The rkhunter '--check' option will compare the current file properties
against previously stored values, and report if any values differ. However, rkhunter
cannot determine what has caused the change, that is for the user to do.
One or more warnings have been found while checking the system.
Please check the log file (/var/log/rkhunter/rkhunter.log)
Rootkit Detection On A Windows VPS
May 4, 2007My Windows VPS has come under heavy attack by hackers trying to get through MSFTPSVC for the past month and they finally managed to somehow get in 2 days ago. Somehow, the "Allow anonymous login" setting was selected in my FTP settings and they got in.
They even managed to turn off my firewall. I guessing they used a buffer overflow or some other Windows Server 2003 weakness that was fixed in SP2 (too bad SP2 is'nt supported by SWSoft yet).
The attacks began less than 1 week after I had signed up with Virpus. I did'nt even have my domain name pointing to the server or a site up when the first set of dictionary attacks began. How common is that 0_0 ?
Anyway, since I now know they've gotten in I've run a virus check and everything looks clean but I really want to run some kind of root kit detection software. I've tried everything suggested on the antirootkit website but none of them seem to work on a VPS.
Rootkit Hunter Installation
Dec 22, 2007I was thinking of getting one of our server admins to install the Rootkit Hunter.
Would this have any effect on our server resources and stability.
Im trying to be more security minded after afew weeks ago when our server was hijacked, and I dont want to go through this again.
How Can I Get Rootkit Hunter To Email Me The Results
Apr 4, 2008How can I get rootkit hunter to email me the results?
I tried
MAILTO=me@mydomain
0 0 * * * /root/rkhunter-1.3.2/files/rkhunter --cronjob
and
MAILTO=me@mydomain 0 0 * * * /root/rkhunter-1.3.2/files/rkhunter --cronjob
But it is not sending the email, nothing even show up in my exim_mainlog.
Security: Rootkit/rkhunter/rootcheck
Aug 24, 2007For securities purposes whats best to install?
Feel free to suggest any others.
Server is running cpanel
How Can I Stop The Rootkit Hunter False Positives
Apr 22, 2008How can I stop the rootkit hunter false positives?
It is alerting on these, on a fresh OS install:
Checking for prerequisites [ Warning ]
/usr/bin/groups [ Warning ]
/usr/bin/ldd [ Warning ]
/usr/bin/whatis [ Warning ]
/sbin/ifdown [ Warning ]
/sbin/ifup [ Warning ]
Rootkit, Someboy Get Full Access. Want To Test To Find Out What Software It Is.
Jun 30, 2007Possible root kit, what can I do?
Sorry for the long post, but I need some feedback.
One of the main reasons that I went from a windows dedicated server to a VPS was because I had several attacks on my server that cost lots of time and money. The only reason to these attacks was that it has to be a root kit in one of the programs I used on my server.
I have used SolarVPS for over 6 months now, and have used most of the same software I used on my dedicated server. I have not had any attacks or somebody gaining access to my VPS.
Last week I got a new Windows VPS from JaguarPC. I installed the same software as always (I will list the software later) and day two of my new VPS somebody had full access, had created a new admin user, installed Utorrent, downloaded and uploaded over 10 GB of movies and music before I discovered the security issue.
Beside my normal software I had downloaded a free downloadmanager, so I could download my plesk backup files faster than on a single download connection. That was the only other software beside my normal software.
But I never used that download manager on my dedicated server, but the same thing happened there also. A user got full access, created a new admin user for remote desktop, etc. I also use different password for the different VPS/DS/hosting plans, but some parts of the main level password is the same.
Last time the user was names support, this time the user was named Dave
I change password often, this year I have changed my password 4-5 times. I have different password for different levels on my VPS/servers. On password for Admin, one for Plesk, one for FTP access to my sites, one for e-mail, one for MySQL etc etc.
I have changed OS at home from XP to Vista, and have only installed 100% secure programs at my home computer. I have not installed one free program or any cracks, warez etc. I also use different antivirus and anti spyware software at home. So the problem can most likely not be at my home computers.
My current software I use on my VPS’s are: (I have some more, but that was the software I used on new VPS)
WinRar 3.61 from [url]
Bandwidth monitor Pro from [url]
Weblog Expert 4.1 from [url]
And the only software I don’t use on my VPS at SolarVPS:
Free Download Manager from [url]
The strange thing is that last time, over 6-7 months ago when I had all the problems with my dedicated server, I traced the IP the hackers had used to login to my DS to Germany.
This time on my new VPS the person has to be from Germany or on country they speak German. The mp3s and the movies where almost all in German.
My plan for the future:
I think I will buy a new VPS plan to test my software. Install one and one software, and see when somebody get access to my VPS. I have to use a provider that offer free OS reloads, so I can reload the OS after I have tested one and one of my programs.
Do anybody know about any companies that allow me to get free OS reloads and provide a Windows 2003 server?
Or will the backup function in VZPP work as OS reload if I take a backup of my new clean VPS and then install software. If it is a rootkit, and I restore, will the rootkit go away? If yes, I can use all providers with VZPP.
And do I have to tell the company what I have planned to do? A rootkit on my VPS will not affect other VPS, so they can get the same rootkit, or the main server?
Do You Recommend A Software Firewall When Behind A Hardware Firewall
Dec 17, 2008Do you recommend a software firewall when behind a hardware firewall?
All of our servers are behind Cisco ASA 5505 firewalls which we rent from Liquidweb. All are being managed correctly and setup to there optimal levels. With hardware firewalls firmly in place, do you still recommend a software firewall such as APF or IPTables (we're talking linux); in our opinion we see it as an extra administration overhead. If this is however untrue, we will change out thinking.
Firewall - Kerio Or Windows Firewall
Jun 13, 2008I've found a dedicated server at a great price and plan to stick with it, my first ( already have 2 vps accounts ). I don't have the money for a hardware firewall. However, I do have a chance to renew a Kerio WinRoute Firewall license from way back.
Does anyone think this would be better than the default windows 2003 firewall?
APF Firewall Help
Sep 30, 2006after install apf firewall whole server blocked to everyone.. i can't get ping back as well. Any idea?
View 2 Replies View RelatedFirewall + NAT
Oct 24, 2009I'm planning to place some firewalls in my network, but I'm afraid of something.
I have never used cisco pix, checkpoints and others.. We currently use custom made linux solutions for that
When we use these ready-to-go boxes, do we need to NAT the internal server IPs?
Is it possible to use these ready-to-go solutions with REAL IPs in the servers?
Does cPanel work well with NATed internal IPs? Or shall I have some trouble?
Do you think it's safer to with NATed, or it will be better to use real ips instead?
Best Firewall
Apr 8, 2009I was wondering what everyone thinks the best Firewall software is for a dedicated server?
View 7 Replies View RelatedFTP Ban And Firewall
Jun 3, 2009Im using the latest cPanel release. Using Pure-FTPD as the ftp server. I have CSF Firewall installed and configured and have also got [url]installed. on the dos deflate software ive set the ban limit to 250 connections.
But what my problem is that while downloading on ftp clients with internet that can download very fast that it will ban them. Ive kinda realised that it is to do with the DDos software but im unsure what i should do. Increase the limit of connections but that would mean that more minor Ddos attacks might get through so that would affect more clients. Or leave the limit at 250 and let clients get blocked for 20 minutes.
Or alternatively is there a way i can stop people getting banned via FTP completly. As i dont see that option on the Ddos or csf.
Firewall + RDP
Jan 14, 2009I´m running the remote desktop service and configuring a remote dedicated server right now.
So, I need to install a firewall in this machine, but I don´t want to be disconnected after the installation.
So, can anyone tell me of a firewall that don´t stop the connection of RDP just after installation and works with Windows 2003 Server?
Firewall OS
May 9, 2008secure a LAN network with 200 computers, a specific hardware solution (like CISCO PIX or so) might not be available.
Though, I'm considering a Firewall OS based Solution like pfSense, m0n0wall, eBox, Endian Firewall, SmoothWall, etc.
There are so many options and I have no experience with none of this. My Requirements are:
Web based configuration
Clean Interface with graphic statistics
Pretty Secure
Good hardware support
Free usage
Simple configuration
Support for high bandwidth usage
I think OpenBSD is pretty secure, is there any OpenBSD Firewall OS solution with this requirements?
What Better Firewall To Vps?
Mar 23, 2008What better firewall to vps?
In my vps not use csf or iptables
Virtuozzo has bug that.
APF Vs CSF Firewall ...
Mar 30, 2008What do you think of this two firewall? which one is better overall?
View 14 Replies View RelatedBetter Firewall :: CSF Vs. APF And BFD
Jul 8, 2008I am looking to setup a Firewall etc... on a VPS and would like to know what is the better one and easy to use etc...
CSF or APF and BFD ?
Firewall - 300 USD Max
Feb 6, 2008know of any hardware firewall (or suggest) which is under 300 USD and can protect around 5 servers with a total bandwidth capacity of 100 (+/-) Mbps. I am really no security expert
Of course, it should have web based management, online documentation (not really needed) and something special for prevent DoS attacks automatically (really fed up of them).
If possible if you can link me directly to an online store that can ship it Internationally / Europe?
CSF Firewall
Apr 26, 2008I was having attacks so I installed CSF firewall which did a great job. However on a few of my sites, specifically proxy ones, every second or third page you visit will be a 403 Forbidden error. After about 20-30 seconds, you can refresh and it goes away. I suspect CSF is causing this, because it just started to happen after I installed it. Is it thinking there are too many connections or too much bandwidth and its blocking me or other users just using the proxy? Is there a way to make it slightly more tolerant?
View 3 Replies View RelatedFirewall
Mar 2, 2007I am a non technical type that is trying to start a web based business. I am thnking a dedicated server will be the best option for me but as I looked at the quotes from several different web hosts I noticed that the firewall services that they provide are very expensive. 100$ a month - 150$ a month.
Are there other firewall options that can be installed on the server that we as administrators can install and use?
Firewall Log
Jun 10, 2007I have had a fair few hack attempts from ip numbers that are on the same
provider ;telewest' that i am on - is there anyway of getting this takne further other than contacting isp?
Jun 9 21:49:04 mark-scorfields-computer ipfw: 12190 Deny TCP 122.24.44.198:2426 82.39.142.27:135 in via en0
Jun 9 21:49:04 mark-scorfields-computer ipfw: 12190 Deny TCP 122.24.44.198:2426 82.39.142.27:135 in via en0
Jun 9 21:49:04 mark-scorfields-computer ipfw: 12190 Deny TCP 122.24.44.198:2426 82.39.142.27:135 in via en0
Jun 9 21:49:08 mark-scorfields-computer ipfw: 12190 Deny TCP 211.75.135.2:2261 82.39.142.27:135 in via en0
Jun 9 21:49:08 mark-scorfields-computer ipfw: 12190 Deny TCP 211.75.135.2:2261 82.39.142.27:135 in via en0
Jun 9 21:49:08 mark-scorfields-computer ipfw: 12190 Deny TCP 211.75.135.2:2261 82.39.142.27:135 in via en0
Jun 9 21:50:16 mark-scorfields-computer ipfw: 35000 Deny UDP 204.16.209.44:51324 82.39.142.27:1026 in via en0
Jun 9 21:50:16 mark-scorfields-computer ipfw: 35000 Deny UDP 204.16.209.44:51324 82.39.142.27:1026 in via en0
Jun 9 21:50:16 mark-scorfields-computer ipfw: 35000 Deny UDP 204.16.209.44:51324 82.39.142.27:1026 in via en0
Jun 9 21:50:16 mark-scorfields-computer ipfw: 35000 Deny UDP 204.16.209.44:51324 82.39.142.27:1027 in via en0
Jun 9 21:50:16 mark-scorfields-computer ipfw: 35000 Deny UDP 204.16.209.44:51324 82.39.142.27:1027 in via en0
Jun 9 21:50:16 mark-scorfields-computer ipfw: 35000 Deny UDP 204.16.209.44:51324 82.39.142.27:1027 in via en0
Jun 9 21:50:36 mark-scorfields-computer ipfw: 12190 Deny TCP 121.34.113.29:27207 82.39.142.27:135 in via en0
Jun 9 21:50:36 mark-scorfields-computer ipfw: 12190 Deny TCP 121.34.113.29:27207 82.39.142.27:135 in via en0
Jun 9 21:50:36 mark-scorfields-computer ipfw: 12190 Deny TCP 121.34.113.29:27207 82.39.142.27:135 in via en0
Jun 9 21:59:38 mark-scorfields-computer ipfw: 12190 Deny TCP 58.221.225.230:4151 82.39.142.27:135 in via en0
Jun 9 21:59:38 mark-scorfields-computer ipfw: 12190 Deny TCP 58.221.225.230:4151 82.39.142.27:135 in via en0
Jun 9 21:59:38 mark-scorfields-computer ipfw: 12190 Deny TCP 58.221.225.230:4151 82.39.142.27:135 in via en0
Jun 9 22:00:38 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36236 82.39.142.27:1027 in via en0
Jun 9 22:00:38 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36236 82.39.142.27:1027 in via en0
Jun 9 22:00:38 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36236 82.39.142.27:1027 in via en0
Jun 9 22:00:38 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36236 82.39.142.27:1026 in via en0
Jun 9 22:00:38 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36236 82.39.142.27:1026 in via en0
Jun 9 22:00:38 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36236 82.39.142.27:1026 in via en0
Jun 9 22:00:39 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36240 82.39.142.27:1026 in via en0
Jun 9 22:00:39 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36240 82.39.142.27:1026 in via en0
Jun 9 22:00:39 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36240 82.39.142.27:1026 in via en0
Jun 9 22:00:39 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36240 82.39.142.27:1027 in via en0
Jun 9 22:00:39 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36240 82.39.142.27:1027 in via en0
Jun 9 22:00:39 mark-scorfields-computer ipfw: 35000 Deny UDP 220.164.140.236:36240 82.39.142.27:1027 in via en0
Jun 9 22:03:45 mark-scorfields-computer ipfw: 12190 Deny TCP 125.195.44.229:2212 82.39.142.27:135 in via en0
Jun 9 22:03:45 mark-scorfields-computer ipfw: 12190 Deny TCP 125.195.44.229:2212 82.39.142.27:135 in via en0
Jun 9 22:03:45 mark-scorfields-computer ipfw: 12190 Deny TCP 125.195.44.229:2212 82.39.142.27:135 in via en0
Jun 9 22:03:48 mark-scorfields-computer ipfw: 12190 Deny TCP 82.39.189.11:4628 82.39.142.27:2967 in via en0
Jun 9 22:03:48 mark-scorfields-computer ipfw: 12190 Deny TCP 82.39.189.11:4628 82.39.142.27:2967 in via en0
Jun 9 22:03:48 mark-scorfields-computer ipfw: 12190 Deny TCP 82.39.189.11:4628 82.39.142.27:2967 in via en0
Jun 9 22:03:51 mark-scorfields-computer ipfw: 12190 Deny TCP 82.39.189.11:4628 82.39.142.27:2967 in via en0
Jun 9 22:03:51 mark-scorfields-computer ipfw: 12190 Deny TCP 82.39.189.11:4628
Best Firewall W/o Lan
Feb 10, 2007Lately one of my servers have been getting syn floods and ddos attacks (repeatedly for the last 2 weeks). The attacks are not as bad as they were the last 2 weeks, but my software firewall (iptables and csf) is not doing the job anymore. It can't handle such large attacks.
I picked up a netgear firewall, but it has dhcp and lan, which made it have no use to me. All my servers are on static ips, so I would be unable to use a lan.
Is there a firewall available which would allow me to setup something like this (Server 1 is the one getting attacked):
Internet ---> Firewall ---> 48 Port Switch ---> Server 1, Server 2, and so on
or
Internet ---> 48 Port Switch ---> Firewall ---> Server 1
Other servers come off the Switch
I saw the Cisco Pix on ebay, but am not sure of all the features it holds. I basically need a firewall without any lan capaibilites, no routing, just a plain firewall that will protect from DDoS and Syn Floods (if possible, also email me the logs). Also needs to push up to 20Mbps (100Mbps would be best though).
I looked into m0n0wall and pfsense, but their software didn't make any sense to me. I tried setting it up on a PIII 700Mhz with 768MB Ram but never got the webConfig to work.
Price is not a huge issue, I just need these attacks to end. any suggestions on software firewalls let me know.
Firewall
Oct 22, 2007Which is the best firewall in linux unix servers..................
View 4 Replies View Related