similar to: [Bug 552] New: Strange DNAT behaviour... packet don't pass to PREROUTING and go directly in INPUT !!

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=552 ------- Additional Comments From cbettero@ciditech.it 2007-03-04 21:48 MET ------- This problem prevents AJAX web sites to be hosted on the internal web server, because many packets will be dropped instead of passing into PREROUTING chain... -- Configure bugmail: https://bugzilla.netfilter.org/bugzilla/userprefs.cgi?tab=email

Hi, I have an DNAT ISSUE with PREROUTING. This is my setup. I have 2 firewalls running iptables. Pls asume 1.2.3.4/29 is the internet interace of FIRST firewall. 2.3.4.5/29 is the internet interface of SECOND firewall. it has DMZ zone. in that DMZ zone, mail server runnig @ 192.168.100.3 Now I want to DNAT port 25 of FISRT firewall (i.e - its ip address - 1.2.3.4/29) to the internet ip

https://bugzilla.netfilter.org/show_bug.cgi?id=1117 Bug ID: 1117 Summary: Table ipv4-nat prerouting dnat doesn't accept dest IP:PORT Product: nftables Version: unspecified Hardware: x86_64 OS: All Status: NEW Severity: enhancement Priority: P5 Component: nft

Hi, I am running a ASTERISK BOX behind a firewall. It is at DMZ . Now I want to connect to my ASTERISK BOX from Internet. So I want to DNAT. How can I do it? Pls assume that ip address that connects to Internet on firewall is 1.2.3.4and is attached to eth0. And ASTERISK BOX is 192.168.101.23 Then, What is the rule (PREROUTING) for it? What is the port to DNAT? I think udp 5060. So I have

Hi, I have an DNAT ISSUE with PREROUTING. This is my setup. I have 2 firewalls running iptables. Pls asume 1.2.3.4/29 is the internet interace of FIRST firewall. 2.3.4.5/29 is the internet interface of SECOND firewall. it has DMZ zone. in that DMZ zone, mail server runnig @ 192.168.100.3 Now I want to DNAT port 25 of FISRT firewall ( i.e - its ip address - 1.2.3.4/29) to the internet ip

I''m trying to setup some DNAT and the packets seem to be disappearing after the PREROUTING step. The packets are coming in eth2 (both LOG targets in iptables and tcpdump confirm this). They are then DNATed to an IP that should cause them to go out eth3. However I never see them go out that interface. I have tried putting LOG rules into the FORWARD chain with no success. I''m

Hi Here is a short description of my network: ppp0 (adsl) ppp1 (adsl) | | | | --------------------- | Router | | Firewall | | MASQUERAD | | DNAT | | | | eth0 | --------------------- | | | ---------------------- |

I have a server whit 2 interfaces of network, where eth0 is the interfaces connetc to internet and eth1 to the internal network. This server hace a Squid only, but i setting the iptables for protection to the server. Iptables run from script and in this script i setting the redirection for the other server in my internal network to port 80 and 443. I follow the diferent how to and many manual, but

Is there a way to add a rule to the nat table (CentOS 5.7) that would alter the port number of tcp packets destined for the server itself? I have ip_forwarding enabled, but the packets don't seem to hit the prerouting chain. I have the following redirect rule in the prerouting table. I also tried DNAT, but if the packets don't hit PREROUTING, it won't work either. iptables -t nat

Hi, The private adresses (192.168.254.0/255.255.255.0) of my network are sent dynamically by dhcp on my network. The dhcp server is on the firewall which address is 192.168.254.1/255.255.255.255 (this address is static). I''ve got a rsync server on this network which is on a separe server. His address is 192.168.254.200/255.255.255.255 (this address is static). I want that the users

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=452 Summary: DNAT to internal network don't work with source routing and 2 uplinks Product: netfilter/iptables Version: linux-2.6.x Platform: i386 OS/Version: Debian GNU/Linux Status: NEW Severity: normal Priority: P2

Hi. I have a Server''s network with some servers in it, all with 192.168.1.0/25 ips. There is also a router in that network with ip 192.168.1.1. This router also connected to a client''s network 10.10.0.0/16 with ip 10.10.100.1. All services on each server are given their virtual address from one of two virtual networks 192.168.1.128/28 and 192.168.1.144/28. 192.168.1.128/28 is

Hi all, I want to run vsftp behind a firewall.(i.e DMZ zone) . It is runnig as passive ftp. the theroy behind passive ftp is , - FTP server's port 21 from anywhere ( Client initiates connection) - FTP server's port 21 to ports > 1024 (Server responds to client's control port) - FTP server's ports > 1024 from anywhere (Client initiates data connection to

https://bugzilla.netfilter.org/show_bug.cgi?id=850 Summary: DNAT applied even after deleting the IP Tables DNAT Rule Product: iptables Version: 1.4.x Platform: All OS/Version: All Status: NEW Severity: major Priority: P5 Component: iptables AssignedTo: netfilter-buglog at

https://bugzilla.netfilter.org/show_bug.cgi?id=1051 Bug ID: 1051 Summary: nftables DNAT not working Product: nftables Version: unspecified Hardware: x86_64 OS: Gentoo Status: NEW Severity: critical Priority: P5 Component: kernel Assignee: pablo at netfilter.org

Hi. Contents: 1) Introduction 2) 2 Questions * Introduction: I used this HOWTO to use multiple providers. http://lartc.org/howto/lartc.rpdb.multiple-links.html The box is a load balancer, using the Linux Virtual Server. We have a problem with lost connections, and it seems you get issues when you combine this setup with DNAT [1]. The proposed solution [1] is to use these rules to mark

HI, here I have an eMail with connected to a DMZ 10.0.0.0/24 network. This server holds 10.0.0.87 There are two firewall-hosts one with CentOS 6 10.0.0.10 and one with CentOS 7 10.0.0.17 The CentOS 6 has the following iptables-rule (extract): ----------------------8<----------------------8<----------------------8< *nat -A POSTROUTING -o eth1 -j MASQUERADE -A PREROUTING -i eth1 -d

Hi there I''ve built a configuration based on following document: http://en.opensuse.org/Xen3_and_a_Virtual_Network I have one physical interface on dom0 - eth0 with public IP, xenbr0 with local IP(10.100.0.1/24) and 8 domU with local IP from the same network as xenbr0. IP address on xenbr0 is gw for all domU. ip forwarding is enabled. My dom0 iptables rules: -A PREROUTING -d

Hi all, I want to run vsftp behind a firewall.(i.e DMZ zone) . It is runnig as passive ftp. the theroy behind passive ftp is , - FTP server''s port 21 from anywhere (Client initiates connection) - FTP server''s port 21 to ports > 1024 (Server responds to client''s control port) - FTP server''s ports > 1024 from anywhere (Client initiates data

-------- Original Message -------- Subject: Re: [LARTC] DNAT rule for vsftp (PASSIVE FTP) Date: Fri, 05 Oct 2007 12:17:42 +0530 From: Mohan Sundaram <smohan@vsnl.com> Reply-To: smohan@vsnl.com To: Indunil Jayasooriya <indunil75@gmail.com> References: <7ed6b0aa0710042251u6442fb85ma74e46aa9d3f81f9@mail.gmail.com> Indunil Jayasooriya wrote: > Hi all, > > I want to run