similar to: DNAT + Masq Problem - Yes I read the FAQ I promise

Hello, I have a pretty standard two-interface setup with masquerading, so the local network can connect through the firewall to the Internet. On the firewall box (trevor), eth0 is connected to a cable modem and eth1 is connected to the local network via a crossed cable. There is one other machine on the local network (brian), whose eth0 is at the other end of the crossed cable. I used to have

Hi I have 2nic firewall . I had to open some ranges of udp and tcp ports . I faced a problem that although all the ports are open Some functionality was not working . Any body used shorewall with H323 Voip traffic DNATed . Any help is appretiated . Thanks ----- Original Message ----- From: <shorewall-users-request@lists.shorewall.net> To: <shorewall-users@lists.shorewall.net> Sent:

Hi everybody. I''m sorry to bother you because I''m probably doing something wrong, but I have already read the documentation and I have been using shorewall for quite a long time. I recently installed 3.2.3 from source (but there was the same problem with 3.0.7 from apt-get ... -t unstable) The thing is, that I can''t get masq working. Maybe this is because

Hello Shorewall list, I''m a happy Shorewall user since a few years now and everything works fine for me except one thing that I try to implement since a week, the multi-isp. I''ve downloaded the 2.4.0 Stable release yesterday and tried the RC2 since a week. My config is a Debian running a kernel 2.4.27 home made with the CONNMARK.diff patch applied I''m using 2 ISP,

Hi All, I''m using the Mandrake Linux MultiNetwork Firewall which is a web based interface to the shorewall firewall. I have an internal ip address of 172.25.38.1 which I am try to nat to a public address so that the client pc can ftp to the internet I have add the following in the nat file: 168.10.10.1 eth3 172.25.38.1 No No And this to rules: ACCEPT lan:172.25.38.1 wan tcp

Hi, I''m trying to enable ssh (when that works, want to add:pop3s,smtp,web) from the internet to the firewall but it does not work. I managed to DNAT ftp to a host in the loc network (192.168.0.50) successful but I don''t know why SSH: Does not work for me: ACCEPT net fw tcp 22 Works from the loc network: ACCEPT loc fw tcp 22 I have tried also with (no success): AllowSSH

Hi, after kernel upgrade to 2.4.23 my existing configuration of shorewal 1.4.8 will not start / it fail on DNAT and/or masq with message: "iptables: Invalid argument" / I founded some similar problems description - see links bellow, but there is no solution how to get work shorewall with DNAT and masq with 2.4.23 kernel. http://www.ussg.iu.edu/hypermail/linux/kernel/0312.0/0268.html

Hi, im running shorewall 2.0.16 with centos 3 (iptables v1.2.8), everything is working fine for several days, i have configured a masq lan and all the outgoing traffic is ok, but now i want to redirect (port forward) the external web traffic to an internal machine, somethig like this INTERNET ---------> SHOREWALL -------------------> INTERNAL_MACHINE [public

I''m trying to use my VPS server (single interface of course) as somewhat of a VPN gateway to my other location (which is not accessible directly from some places) where the openvpn server is running, and am kind of lost as to what to try next. I tried a redirect rule, but apparently shorewall didn''t like that (it just failed to start). I tried adding the rules via

My experimentation with a Perl-based compiler for Shorewall is beginning to bear fruit. Here is a timing from the main firewall at shorewall.net using the Perl-based compiler. That compiler generates a script that uses iptables-restore to configure Netfilter. root@lists:~/shorewall# shorewall restart . Compiling... Shorewall configuration compiled to /var/lib/shorewall/.restart Restarting

Hi, Sorry, not an experienced shorewall user, this is my first basic setup. This starts to drive me crazy. I wanted to use DNAT to forward port 33890 to an internal machine (windows) port 3389. To reach my workstation when I''m not home. In my rules : DNAT:debug net loc:192.168.0.11:3389 tcp 33890 - pub.lic.ip.add #SECTION BLACKLIST #well known port scans DROP net

Hi, I followed the instructions in the section "Squid (transparent) Running on the Firewall" on http://www.shorewall.net/Shorewall_Squid_Usage.html to setup Squid transparently on a Linux gateway. My net is as follows: loc subnet --- fw Linux Gateway --- ADSL router 192.168.1.0/24 192.168.1.92 (eth1) WAN.WAN.WAN.2 (gw = WAN.WAN.WAN.WAN (eth0) 192.168.1.92) (gw =

I''m having another little problem with my new firewall. I want outgoing port 25 from my mail server to appear on the address 65.223.121.227 so I created the file masq: eth2 192.168.124.18 65.223.121.227 tcp 25 eth1 eth5 eth1 eth3 eth1 eth4 eth1 == net0 == 209.189.103.196/27 eth2 == net1 == 65.223.121.237/28 eth3 == dmz0 eth4 == dmz1 eth5 == loc ==

Dear All, Firstly, thank you very much - shorewall is great. I''m not a member of this list, and please forgive me if I am suggesting something stupid, but the following occurs to me, and I thought it might be useful. Why no make it possible to specify zones as well as interfaces in the /etc/shorewall/masq file ? Eg: instead of: eth0 eth1 one might write: net loc (or masq in

Hi all, I have a problem with a new Shorewall box I''m trying to migrate from iptables rules to shorewall 2.2.0. I have a 3 interfaces setup: - eth0 ---> internet (ip address) - eth1 ---> remote office (10.0.0.0/8) - eth2 ---> lan (192.168.16.0/24) I''m using a very simple and common setup, with just a few DNAT rules in my /etc/shorewall/rules file, and about twenty

Hello all, I’m currently trying to figure out how to forward ports to guests that are on a NAT Network. I have followed the directions on https://wiki.libvirt.org/page/Networking under the “Forwarding Incoming Connections” Section and get connection refused when attempting to connect. System: Ubuntu Server 18.04.1 Virsh / LibVirtd Version: 4.0.0 Here’s the contents of /etc/libvirt/hooks/qemu  

Hello everyone, really not sure if this is a LARTC question or not, but I have several hundred users all MASQ''d behind a single static IP. Users are reporting that certain websites are blacklisting that single static external IP for various reasons. What I would like to do is use several external IP''s and have a MASQ''d user getting a random one each time. Here is

Ok, shaping on Linux is new to me.. so bear with me if i am just stupid. curtain:/etc/shorewall# grep TC shorewall.conf | grep -v ^# TCP_FLAGS_LOG_LEVEL=info TC_ENABLED=Yes CLEAR_TC=Yes TCP_FLAGS_DISPOSITION=DROP curtain:/etc/shorewall# So it should be enabled, right? ---- tcrules ---- 1 eth0 0.0.0.0/0 all 2 eth1 0.0.0.0/0 all 2 eth2 0.0.0.0/0

Dear all, I get a problem with masq, why it doesn''t work for connect to internet? my masq configuration /etc/shorewall/masq eth0 10.2.0.0/16 202.158.1.99 but if my masq file without 202.158.1.99 it work! /etc/shorewall/masq eth0 10.2.0.0/16 and the ip nat will be same with ip address eth0. FYI: IP number (202.158.1.99) just valid IP but doesn''t have interface

Hi all. I''m using Jamal''s ifb virtual interface from new kernel. Redirecting incoming traffic from external interface like that: # tc [blahbla] match u32 0 0 flowid 1:0 action mirred egress redirect dev ifb0 to ifb to shape it. The problem is that I''m using MASQUERADE by netfilter also. That redirected traffic coming from internet gets to ifb _before_ DNAT is done.