What's The Best Linux Firewall
Jul 10, 2008
I have 3 web servers that I need behind a firewall. Right now they're directly connected to the internet, and have little protection. I'd like to build my own Linux router and have done some research but not sure which is the best solution.
The main feature I need is the ability to forward ports based on the destination host header. Most firewall distros only allow you to forward port 80 to one IP address, but I need the router to send to different internal IPs for different sites.
I've looked at IPCOP and Smoothwall express and a few others, but the "free" ones don't seem to do this.
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Jun 16, 2008
Whats ur take on Wired Tree folks, shall i jump the ship and provide them with utter bunny mayhem (cause i am known to be intolerably insane when my server is down). How is their overall support, and network and performance ? Anyone current got "Server" from them who would like to throw some light on their performance and services ?
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Jun 29, 2008
my website hosted at reliablesite.net is down!
and I can't access [url]
reliablesite staff please advise when we will get our websites back.
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Dec 1, 2007
All I have is a big forum to host and I dont have much time to manage it - so a managed server is preferred. I also want cPanel on it.
futurehosting.biz really appealed to me but I was wondering if there was anything better, in terms of storage, bandwidth and RAM (also CPU, i dont know how much futurehosting give).
I would prefer if they had some kind of 24/7 live chat.
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Aug 8, 2007
willing to find a cheap vps hosting provider and when l check some of the threats here , l m meeting new terms.
What is a Busrtable Ram ? How does it effect the Real Ram ? and How does it effect the cpu performance ? like page file ? l really dont know whats it means.
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Feb 17, 2008
I am setting up a web hosting server in a datacenter.
Websites will be powered by Apache, MySQL and PHP.
I will be using CentOS 5 32 bit.
"APF Software Firewall for Linux" is offered as a free option by the datacenter.
Should I use it?
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Oct 3, 2009
I have been with Blue Virtual (bluevirtual.com) for many years, since the Communitech days. However, the service these past few weeks has gone downhill big time.
The BV forums are dead, the webhosting is up and down like a yoyo, mail is intermittent.
Not just me but fellow users are experiencing the same.
Support tickets are going unanswered (accounts & tech. support).
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Feb 13, 2007
I run a large community site, and i was wondering what the max amount of images I should have in an image folder? I'm looking to upgrade to an image only server and setup subdomain folders to split up the files. right now i have about 200k+ image files in just the public image folder... thats not counting the thumbnail folder, private folders etc...
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Oct 14, 2007
All my sites are down raised tickets for the last 2 days still no answers
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Jul 23, 2007
what people think about jaguarpc I haven't been there too long yet I find the servers some what slow... or I should say VPS's there customer service is good yet I found knownhost to be better performance wise.. I just want to know what others think
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Dec 15, 2007
Hi,
can you please tell me how i can clear the firewall in my linux box?
It's CentOS but i'm not sure what type of firewall is installed on my box.
Hpe to get response soon,
toby
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Nov 10, 2008
I run a small datacenter, and we are migrating from Cisco to Linux based routers.
This routers should run a firewall, DDOS mitigation rules, CBQ bandwidth limitation, etc..
I know how to mitigate DDOS using tcpdump, also I know how to route..
I just need some advice about the firewall, stopping basic DDOS, fragmented packets, etc..
Should I use APF firewall in this case? Is there a good IPTABLES set of rules I could use?
I'm giving up from Ciscos, as I just discovered there are some UDP packets that can easily break them. I tested it last night, and that was it, nothing secure A few traffic (bogus UDP packets) and the router was down for a few minutes.
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Apr 7, 2015
How to activate/enable the firewall by cli, does this is possible?
Firewall module is installed.
Option in plesk GUI working well.
Does this is possible ? If yes how ?
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Apr 25, 2009
We are in the process building a new colocation facility and I wanted to take some input from everyone here. We have most of the infrastructure planning and layout done but were still early on in the construction phase so now is the last chance to get some input. I have two main questions I wanted to ask.
1)When your looking for a colocation facility what things are most important to you?
2)Have you ever wished that datacenters offered something outside the normal things that most providers do.
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Jan 13, 2009
i don't get why people can have more than one static ip...wouldn't you only need one?
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Apr 9, 2007
I have never understand this? Honestly, what is the point if they all point to one web server? I mean if the web server fails it doesnt do any good if you have 10 DNS servers. The only time it makes sense to me to run multiple DNS servers is if your DNS server is a piece of junk, and always goes down, which honestly doesnt happen that much.
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Aug 13, 2008
I run CentOS 5.2 (Sometimes CentOS 4.6). I have been messing around with IPTables, and cannot find out how to filter zero-length packets.
I believe I might need an unclean module. I have already done hours of reading and researching, but I have come up with nothing, for I do not think this is that common.
If anyone could please let me know the commands to use to filter out all zero-length packets, or the unclean module I need to use with IPTables, I would really appreciate it.
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Jan 15, 2015
Is that possible to block baidu without specifying whole list of IDs it's using ?
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Dec 17, 2014
I have these problems since version 11.5. Now I have installed version 12 on centos . FTP works fine and is super fast and speedy until i enable PLEK FIREWALL, I also tried to add passive port range 60000-65534 to Plesk Firewall rules.
But nothing works.
It takes like 10 times longer to Login + List Files + Make changes using FTP. We applying changes via FTp and its very slow. We can use plesk file manager but its very inconvenient way for quick file uploads and changes.
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Nov 26, 2013
I already posted this as a bug report and now wanted to inform other users.
Starting with Plesk 11.5, the file "/opt/psa/var/modules/firewall/firewall-emergency.sh" contains the following line:
Code:
rm -f /opt/psa/var/modules/firewall/active.flag
That line stems from updating
Code:
Preparing to replace psa-firewall 11.0.9-debian6.0.build110120608.16 (using .../psa-firewall_11.5.30-debian6.0.build115130819.13_amd64.deb) ...
Unpacking replacement psa-firewall ...
Now, when you stop the firewall, you cannot start it again, cause deleting the active.flag disables the firewall:
Code:
# ll /opt/psa/var/modules/firewall/active.flag
-rw-r--r-- 1 root root 0 2013-11-26 09:22 /opt/psa/var/modules/firewall/active.flag
# /etc/init.d/psa-firewall stop
psa-firewall: firewall successfully disabled
# ll /opt/psa/var/modules/firewall/active.flag
ls: cannot access /opt/psa/var/modules/firewall/active.flag: No such file or directory
# /etc/init.d/psa-firewall start
psa-firewall: service is disabled
You then have to manually "touch" the active.flag to be able to start the firewall again. A workaround is to remove the line:
Code:
sed -i 's:rm -f /opt/psa/var/modules/firewall/active.flag::' /opt/psa/var/modules/firewall/firewall-emergency.sh'
I really hope that Parallels fixes this asap, as normally you won't notice that the firewall is not active when every works fine (nothing is blocked) and Plesk still shows all the rules.
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May 26, 2015
I currently have the Web Application Firewall (ModSecurity) installed but would like a visual interface to block IP's, subnets etc.. Can I install the Plesk firewall as well without any conflict with the Web Application Firewall?
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Sep 14, 2014
I have a brand new and fresh installed server with:
Parallels Plesk v12.0.18
openSUSE 13.1
My Problem is, every day i have to click on activate in the settings of the firewall. Otherwise i have no Mail. The rest (Hosting, etc.) works fine.
No changes in the firewall settings where made, just a migration from my old server.
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May 15, 2014
Plesk Firewall has no effect on IPv6?
I am writing today regarding the Plesk Firewall. It seemed to be pretty handy for quickly blocking troublesome users from *replace-with-whatever-IP-block-is-giving-you-trouble*. Yet I am unable to block IPv6 addresses, and the fire wall seems to let some blocked IPv4s right in. I did not see any distinction as to v4 or v6 in the Firewall dialog for adding custom rules, so...
The question is...
(1) Is the Plesk Firewall *supposed* to apply rules to IPv6 by default?
If yes...
(2) Is there a setting or a switch that has to be configured for this to work?
If yes...
(3) Where are said configuration options located?
Okay, when I run /sbin/ip6tables -L (CentOS) I get output that resembles the iptables (no 6) output, only... what, converted to IP6? Not sure. Example output:
DROP tcp ::ffff:31.0.0.0/104 ::/0 tcp dpts:1:10000
In that particular instance I added a drop for the 31.0.0.0/8 block (using the Plesk Firewall interface), in order to create the script that's loaded into iptables (and ip6tables as well, apparently) when one elects to "Apply Configuration". It worked great, executed perfectly, and the iptables output list output looked to be (and remember, I have grossly insufficient background knowledge in this area) accurate.
Yet at the time of this writing I can see via live traffic monitor that an address in the 31.0.0.0/8 block (IPv4) is pounding away at a website. This is curious, as the live traffic monitor indicates an IPv4 address. So... can an IPv4 address be detected and recorded from a host that is only able to connect via IPv6? While an interesting question, I was more concerned with just blocking the IPv6 address and get more academic with it later.
But this raises another question; why would Plesk populate ip6tables and not provide an interface to actually submit IPv6 addresses.
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Aug 23, 2014
When I modify rules using the firewall panel it is not generating rules correctly when selecting allow from selected sources deny from others.
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Oct 25, 2014
Running plesk 12.018 on OpenSUSE 13.1
What causes the firewall to change / reset itself periodically? I enabled the plesk firewall, but some time later it is reset itself and switched to the opensuse firewall (completely different rule set, which blocks most of the ports).
I then disabled the plesk firewall and loaded my own iptables rule set via iptables-restore command. However a few hours later, it also gets reset to the opensuse firewall. The std. opensuse firewall closes most of the ports, so then our email is blocked.
I would like to permanently switch off any plesk handling of the firewall and manage the iptables myself. How to do this?
I also have fail2ban running and defined my own jail.local files.
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May 13, 2008
i want to start an adult site, can someone please recommend me a good host?
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Nov 9, 2014
Applying Plesk firewall changes? I make my change, apply and get to:
Status: Applying in progress. If your browser shows connection error messages, or if this screen does not disappear in more than 30 seconds, go to previous page.
And there things stay. Going back to look at the firewall I can see the change haven't been applied, and going to apply just results in the same. No error, just no anything. It also took numerous attempts to get firewall modification to be swtich on although finally at about the eighth attempt changes were enabled. Only now I can't apply them ...
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Jun 26, 2014
After upgrading to Plesk 12 the FTP connection has become very slow. Mode Security, Fail2Ban and Plesk Firewall have been enabled, the security is set to force sFTP and maximum security and in /etc/proftpd.d/ a conf file has been added to set the passive ports that have been opened in the Plesk Firewall (60000 to 62000)
Turning off the Mod Security does not solve the slow connection.
What can we do to detect the cause of the problem?
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Oct 3, 2014
Plesk 12.x
CentOS 6.5
Any method for copying the Firewall (extension) rules from one server to another.
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Oct 24, 2014
I have enabled modsecurity system and in 1 day the modsec_audit.log file has grown to more than 700Mb. Is there any way to reduce the number of messages that this module logs?
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Aug 17, 2014
I am using the plesk firewall and trying to set up SSH rule which only allows from my IP but deny from everywhere else. In previous versions this worked fine by adding an ip selecting Allow from selected sources, deny from others and the icon in the rules would be orange with the lines
allow incoming from xxx.xxx.xxx.xx
Deny incoming from all others
However this no longer works as the deny from all others is not appearing and is not being generated in the iptables by plesk.
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