similar to: Combatting DDoS attack

Hi, I run two live c-class subnets on the internet. Last Sunday morning I was hit with a DDoS attack and it hasn''t stopped. I made modifications on my shorewall firewall during Sunday to lesson the impact, as they were hammering me with 180k/5sec traffic both ways (inbound and outbound). One of the primary things which helped reduce their DDoS was enabling "norfc1918" on the

I''m getting an error when shorewall is trying to add the default routes for my multi-isp configuration. I''ve attached a shorewall dump... If anyone can give some input I''d appreciate it. RTNETLINK answers: Invalid argument ERROR: Command "ip -4 route replace default scope global table 254 nexthop via 67.110.119.245 dev eth3 weight 1 nexthop via 66.29.181.113

I''m following the document; <http://flurdy.com/docs/postfix/>, and SSH only By default Shorewall in Ubuntu has an empty set up. You can find the default values for Shorewall in /usr/share/doc/shorwall-common/default-config. And examples in /usr/share/doc/shorwall-common/examples. We will create a basic set up. First configure which network adapters we are accessing the net. cp

Hi Tom and folks, Mandriva is shipping shorewall in its main distribution for some time now. It is built on a custom .spec, but I keep it in sync with latest versions of shorewall package. I heard that there were some issues with Mandriva''s package of shorewall, but it was before I started working on it, and the guys that were maintaining it before are no longer working on it.

Hi, I have setup a IPSEC VPN using Openswan to connect a Draytek router to a CentOS 5.2/Shorewall 4.2.9 firewall. The VPN establishes OK but I''m getting a problem with packets from the left hand subnet getting masqueraded rather than routed down the IPSEC VPN as though they were going out onto the net. I''ve spent the last day searching Google and so far I''ve hit a

Hi, This subject has been brought up in the forum, but it''s a bit different. If I have a set of tun interfaces. I already defined tun+ as zone A, and I have excluded tun15 as zone B (a subset of zone A). I need to add tun16 to zone B. My config: /etc/shorewall/interfaces: A tun+ - routeback B tun15 /etc/shorewall/ A ipv4 B:A ipv4 I tried to define in

OK - I figured out what it is but maybe someone can give an explanation here. If I use he multiple zones configuration I have to do in addition Hosts v3005 vlan3005:0.0.0.0/0 And of course this seems to be very logic since this means all ip´s on the internet. But I am still confused a lot why this is the first time I have to do it after using Shorewall over years without to be forced to say

Hello, I''m reading this guide on ipv6 (really just getting my "feet wet"): http://www.shorewall.net/6to4.htm In the section "Configuring IPv6 using my script" I can read that the IPv6 interfaces are: INTERFACES="eth2 eth4" and that correlates fine with the first diagram/figure. However, further down I read "You will notice that sit1, eth0 and eth2

Hi, I had installed squid with ntlm authentication and content filtering from this tutorial: http://www.howtoforge.com/dansguardian-with-multi-group-filtering-and-squid-with-ntlm-auth-on-debian-etch. Next to last point is firewall configuration by ipmasq but I have installed shorewall. This is content of I89tproxy.rul file: #!/bin/sh # # redirect http requests to non-local hosts to the

hi who can ever help me out with the shaping of torrent traffic? i have a pptp at ppp0 over eth0 (10.0.0.1/8) i would like to shape outgoing traffic of rtorrent on these two interfaces, assume rtorrent is running at port 6999 need 3mbit for ppp0 and 50mbit for eth0 i supposed: [tcclasses] ppp0 1 2mbit 3mbit 1 eth0 2 20mbit 50mbit 2 [tcrules] 1 0.0.0.0/0 0.0.0.0/0 tcp

First patch ever proposed, if this is the incorrect medium or format please forgive my ignorance and correct me. --- KVM.xml 2009-08-06 16:11:03.000000000 -0500 +++ KVM_new.xml 2009-08-06 16:11:26.000000000 -0500 @@ -82,7 +82,7 @@ <para>With this configuration, and with only a single network interface on the laptop, this is just a simple <ulink -

Hi, I don''t know any other group of routing gurus like the members of this list, so may be you can give me some hints. I do have a shorewall firewall up and running, openvpn is installed on this server too and is working fine so far except one new situation: I have set up a new local vlan, which I can access from my other local vlans, but not from the opnevpn-vlan. All "old"

Hi, I did an update from Red Hat EL 5.3 to 5.4. Everything works so far. May be somewone would like to know.... iptables-ipv6-1.3.5-5.3.el5 kernel-PAE-2.6.18-164.el5 shorewall-4.2.10-3 shorewall-perl-4.2.10-3 Regards, Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke@filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof

Hi. I have a problem with the icecast. When I activate the service I am having an exesive consumption in the ip queries. It seems like a DDOS attack. How can I mitigate this attack? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/icecast/attachments/20180605/bd03e5eb/attachment.htm>

Hi, my shorewall is version 4.0.15 on Debian Lenny. I have 3 following interfaces: eth0 net (4mbit/512kbit) eth1 loc (100mbit) eth2 loc (100mbit) I want to shape traffic from net on two lan interfaces like: - default is 2000mbit for each local interface - if is no traffic on eth1 is 4mbit for eth2 (and vice versa) My tcdevices eth0 4000mbit 512kbit eth1 -

I'm trying to formulate a strategy for our interconnected Asterisk IAX peers to failover to the PSTN in the event of a DDoS. We currently use them like this: DID--->PRI--->Primary Asterisk--->IAX--->On-site Asterisk--->SIP This works fine, and everyone is happy. One of my concerns, though, is if we get DDoS'd - which happens probably once every couple of years. I'd

Dear list, A few days ago one of my machines were attacked by a DDoS-attack using UDP on random ports.. When I later on analyzed the logs, I found this in my dmesg: xl0: initialization of the rx ring failed (55) xl0: initialization of the rx ring failed (55) xl0: initialization of the rx ring failed (55) I tried to find out on google what it ment, but without any luck. What does that mean and

I ask because I only receive attacks when I activate icecast. I can not do anything at the application level ?. i used ubuntu server 16.04. thanks. 2018-06-05 14:52 GMT-05:00 Alejandro Flores <alex at mordormx.net>: > I think you should contact to your connectivity provider, hopefully they > can provide you the Anti DDOS protection. > > > On Tue, Jun 5, 2018 at 2:16 PM,

Hello, I tried Shorewall for the first time today. I am currently using an up-to-date installation of Debian Sid, which has shorewall 4.2.10, shorewall-shell 4.2.10 and shorewall-perl 4.2.10.1. I noticed that even though I had the following /etc/shorewall/policy file, iptables would still show LOG rules at the end of the INPUT and OUTPUT chains instead of ULOG rules. (Other logging related rules

I know someone who for the past 4 days has been having the heck ddosed out of him. He runs a gaming server, and ran a report on the ddos; he has 8 pages of that and a few hours ago there were 16 pages. They''re attacking his machine on random ports and he blocks UDP traffic on those ports, but they keep attacking on other ports. So far he''s banned over 800,000 IP''s.