similar to: C7, firewalld and rich rules

> Hi, again, folks, > > I'm trying to convert a number of iptables rules to firewalld rich > rules. I need to do this, because this is, in fact, a firewall, to > protect access to servers with sensitive data. It will limit access to > the servers behind it to a specific network, and nobody else, and allow > only certain services through. > > What I've been

On 1/30/19 10:05 PM, Simon Matter via CentOS wrote: > Did you look at Shorewall? IMHO that's what is best used in such > situations and it works since many years now. shorewall doesn't support nftables, which is largely the point of firewalld:? The Linux firewall system is currently undergoing yet another deprecation and migration from iptables to nftables. firewalld should

On Thu, 31 Jan 2019 at 13:13, mark <m.roth at 5-cent.us> wrote: > Gordon Messmer wrote: > > On 1/30/19 10:05 PM, Simon Matter via CentOS wrote: > > > >> Did you look at Shorewall? IMHO that's what is best used in such > >> situations and it works since many years now. > > > > shorewall doesn't support nftables, which is largely the point

Gordon Messmer wrote: > On 1/30/19 10:05 PM, Simon Matter via CentOS wrote: > >> Did you look at Shorewall? IMHO that's what is best used in such >> situations and it works since many years now. > > shorewall doesn't support nftables, which is largely the point of > firewalld:? The Linux firewall system is currently undergoing yet > another deprecation and

Despite that the migration of our applications comes with a significant workload. It seems that also every aspect of common services had changed with EL8. In EL8 firewalld uses nftables as backend. I wonder why iptables does not list any rules while also configured to use nftables as backend. # iptables -V iptables v1.8.2 (nf_tables) # firewall-cmd --list-all |egrep -o '22|ssh' ssh

Is there any way to order rich rules in firewalld? If I remove all rules and add them back in firewalld seems to put them in whatever order it feels like. Alternatively, how can I change the default policy of a firewalld zone? At the moment I don't see any way to have a zone accept traffic by default other than adding a rich rule allowing 0.0.0.0/0. -- Jeff White HPC Systems Engineer

Once upon a time, Jonathan Billings <billings at negate.org> said: > 'iptables' and 'nftables' are competing technologies. In CentOS 8, > firewalld's backend was switched from iptables to nftables. So it > would be expected that the iptables command wouldn't have any rules > defined, it isn't being used by firewalld. That is partially incorrect.

Warren Young wrote: > On Jan 31, 2019, at 11:12 AM, mark <m.roth at 5-cent.us> wrote: >> >> Why would *ANYONE* think that everyone should just start from scratch, >> taking all the time in the world to get it converted? > > If the conversion were simple enough to be easily automated, the new > system is probably no more than just a syntactic difference away from

On Jan 31, 2019, at 11:12 AM, mark <m.roth at 5-cent.us> wrote: > > Why would *ANYONE* think that everyone should just start from scratch, > taking all the time in the world to get it converted? If the conversion were simple enough to be easily automated, the new system is probably no more than just a syntactic difference away from the old, and thus does not provide any

On Aug 26, 2016, at 13:25, Dan White <d_e_white at icloud.com> wrote: > > How about > http://www.firewalld.org/documentation -> firewall.direct(5) > https://twoerner.fedorapeople.org/firewalld/doc/firewalld.direct.html > > priority="priority" > The priority is used to order rules. Priority 0 means add rule on top of the chain, with a higher priority the

I need to be able to temporarily cut off the source of network slowdowns. What I used to do: Router with 2 x NICs running slackware 14. Execute iptraf-ng, choose IP Network Monitor and sort by Byte Count. The sorted screen always seemed a bit confusing but I could usually pluck a couple of IP addresses with racing byte counts and cut all traffic to them using an iptables rule. Then if I wanted to

> -----Original Message----- > From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Gordon > Messmer > Sent: Friday, January 27, 2017 9:23 PM > To: CentOS mailing list > Subject: Re: [CentOS] firewalld > > On 01/27/2017 06:01 PM, TE Dukes wrote: > > I telnet localhost 143, I get connection refused. > > > > What zone is used for the local

> -----Original Message----- > From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of James > Hogarth > Sent: Saturday, January 28, 2017 4:18 AM > To: CentOS mailing list > Subject: Re: [CentOS] firewalld > > On 28 Jan 2017 3:02 am, "TE Dukes" <tdukes at palmettoshopper.com> wrote: > > > > > -----Original Message----- > >

How about? http://www.firewalld.org/documentation? ?-> firewall.direct(5) https://twoerner.fedorapeople.org/firewalld/doc/firewalld.direct.html priority="priority" The priority is used to order rules. Priority 0 means add rule on top of the chain, with a higher priority the rule will be added further down. Rules with the same priority are on the same level and the order of these

Hi! I have a minimal installation of centos8 + packages for freeipa as a vbox vm. there is something strange with the firewall rules : [root at ldap ~]# iptables -S -P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT [root at ldap ~]# firewall-cmd --get-active-zones public interfaces: enp0s17 [root at ldap ~]# firewall-cmd --state running [root at ldap ~]# firewall-cmd --zone=public

Does someone have a link to a how-to-do-it with firewalld, not "disable firewalld and use iptables"? mark

Being a fan of IPtables and dreading the eventual transition to Centos 7, I wondered if in C7's firewalld an interface can be assigned to a single zone or to multiple zones such as 'private' and 'trusted'. For example interface em1 having both trusted and public zones assigned to it. If multiple zones per interface are permitted presumably one can segregate traffic by IP range

Hi List, Are you really using firewalld and network-manager on Centos 7 production servers or old way disabling network manager and using pure iptables like on C6? -- Eero

Hi list, I'm studying nftables. I'm using CentOS 8.1 (Gnome) and I disabled firewalld. I noticed that a default policy is created with tables and chains probably for firewalld. So I created a .nft script where I stored my rules with a flush for previous ruleset, then saved on /etc/sysconfig/nftables.conf and the enabled nftables service. Running the script with nft -f script.nft all

I just installed a host with CentOS-7-x86_64-Minimal-1511.iso It seems that firewalld is not included in the minimal set. I wonder why? If I recall correctly CentOS-7-x86_64-Minimal-1503-01.iso did include it. And, this could be a very stupid question, am I running without a firewall or just without a way to control my firewall? Thanks Patrick