On Thu, Jun 30, 2016 at 11:41 AM, Earl A Ramirez
wrote:
> On 30 Jun 2016 09:34, "Venkata Balaji N" wrote:
> >
> > Hello Community,
> >
> > This is my first ever email to CentOS community. Firstly, CentOS is a
> great
> > open-source operating system. I have been using it for years and
> > recomm
On 06/29/2016 05:19 PM, Always Learning wrote:
Later he adds to that empty iptables configuration.
Long-winded, but nothing wrong.
Saving doesn't "add" to the empty configuration, it replaced the empty
config. I didn't say it was wrong, I said the saved rules are thrown
away. The initial
On 30 Jun 2016 09:34, "Venkata Balaji N" wrote:
>
> Hello Community,
>
> This is my first ever email to CentOS community. Firstly, CentOS is a
great
> open-source operating system. I have been using it for years and
> recommending the same for production use to our customers.
>
> I have installed
Hello Community,
This is my first ever email to CentOS community. Firstly, CentOS is a great
open-source operating system. I have been using it for years and
recommending the same for production use to our customers.
I have installed CentOS-7 operating system couple of days ago and
everything was
On 30/06/16 02:37, Leon Vergottini wrote:
Thank you once again to all. I have learned a lot from you replies.
And I from you.
The funny thing is that I have my rule set with exactly the same default
DROP policy for all chains and several DROP rules at the beginning of my
script. I must hav
On Wed, Jun 29, 2016 at 1:52 AM, Johnny Hughes wrote:
> On 06/28/2016 12:17 PM, Peter Q. wrote:
> > Hi there, I was reading about it.
> >
> https://www.redhat.com/en/about/blog/net-core-now-available-and-supported-red-hat-enterprise-linux-and-red-hat-openshift
> >
> > What will happen with Centos
On Wed, 2016-06-29 at 10:49 -0700, Gordon Messmer wrote:
> On 06/29/2016 03:00 AM, Leon Vergottini wrote:
> > #!/bin/bash
> >
> > # RESET CURRENT RULE BASE
> > iptables -F
> > service iptables save
> Why would you save the existing rule set? This script throws it away
> later, when it runs sa
On 06/29/2016 12:51 PM, Dennis Jacobfeuerborn wrote:
On 29.06.2016 12:00, Leon Vergottini wrote:
# --
# SAVE & APPLY
# --
service iptables save
service iptables restart
You shouldn't scri
On 29.06.2016 12:00, Leon Vergottini wrote:
> Dear Members
>
> I hope you are all doing well.
>
> I am busy teaching myself iptables and was wondering if I may get some
> advise. The scenario is the following:
>
>
>1. Default policy is to block all traffic
>2. Allow web traffic and SSH
On 06/29/2016 03:00 AM, Leon Vergottini wrote:
#!/bin/bash
# RESET CURRENT RULE BASE
iptables -F
service iptables save
Why would you save the existing rule set? This script throws it away
later, when it runs save again.
# MOST COMMON ATTACKS
iptables -A INPUT -p tcp --tcp-flags ALL NONE
Dear Members
Thank you for your replies.
@Anthony K. -- One of the articles that I have read mentioned that the
file gets read from the top to bottom and apply the rules accordingly. In
addition the article also explained that if there is no matching rule, the
default policy will be applied.
Hello Leon.
In addition to everything else mentioned in this thread, I'd recommend you a
great book on the topic.
"Attack Detection and Response with iptables, psad, and fwsnort by Michael Rash"
It contains a really nice and detailed guide on iptables and most common
attacks, nmap, psad and snor
On Wed, 29 Jun 2016, Leon Vergottini wrote:
I am busy teaching myself iptables []
How secure is this setup? Is there any mistakes or things that I
need to look out for?
It's only as secure as your web stack (and, in your case, SSH
configuration).
Packet filtering is a necessary secur
On 06/29/2016 07:51 AM, Hersh wrote:
> Hi All,
>
> The other thing we have noticed after booting is, screen is completely
> blank. GUI is not visible on attached monitor.
>
> We tried switching between different terminals using (Ctl+Alt+F1-12). F2-6
> are showing command line terminals but, other
Hersh wrote:
> Hi All,
>
> The other thing we have noticed after booting is, screen is completely
> blank. GUI is not visible on attached monitor.
>
> We tried switching between different terminals using (Ctl+Alt+F1-12). F2-6
> are showing command line terminals but, others are returning blank scre
On 29/06/16 20:00, Leon Vergottini wrote:
# DEFAULT FIREWALL POLICY
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP
# --
# INPUT CHAIN RULES
# --
# MOST COMMON AT
Hi All,
The other thing we have noticed after booting is, screen is completely
blank. GUI is not visible on attached monitor.
We tried switching between different terminals using (Ctl+Alt+F1-12). F2-6
are showing command line terminals but, others are returning blank screen
only.
It appears that
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Dear Members
I hope you are all doing well.
I am busy teaching myself iptables and was wondering if I may get some
advise. The scenario is the following:
1. Default policy is to block all traffic
2. Allow web traffic and SSH
3. Allow other applications
I have come up with the followi
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