similar to: Iptables Question

Where is the correct place to control what traffic is masq'ed out? This is what I have, but I was told the Forward chain isn't the right place to do this? iptables -A POSTROUTING -t nat -o $WAN -j MASQUERADE iptables -A FORWARD -i $WAN -o $LAN -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -i $LAN -o $WAN -m state --state NEW,ESTABLISHED,RELATED -p tcp -m multiport

Hello everybody. I''m running linux 2.6.19 with nth match to alternatively snat outgoing connections to two different ip addresses for load balancing between two adsl lines: Here is: $IPTABLES -t nat -A POSTROUTING -s my_ip --protocol tcp -m multiport --dports 80,443 -m statistic --mode nth --every 2 -j SNAT --to adslA $IPTABLES -t nat -A POSTROUTING -s my_ip --protocol tcp -m multiport

Hello, people. I read iptables tutorial and lartc, but i''m still confused with one trouble. May be this question was discussed already, so forward me solution, if is. So, there''s a trouble. I have debian etch linux. 2.6.18-4 kernel. On this computer i have three interfaces: eth0 - my lan, eth1, eth2 - providers. By default all internet traffic routed through eth2. But i

Hello listmates, It's been a few years since I've set up a router... and for some reason I seem to be getting hung up on this one. Does anybody have a sample iptables config file that would incorporate NAT and forwarding for a simple router? Thanks. Boris.

Hello, I installed my linux server for 3 months now. It does almost everything (dns, web & mail server, firewall ...). I just encounterd two problems with the firewall: behind this server there are 2 computers: i got emule on one and msn on the other. The problem is that I can''t configure well the firewall fore these 2 rules. I''ve added DNAT rules but it

I have a dual homed server in an install for someone who is very cost sensitive. This server originally is being setup as an Asterisk server, but now the simplest thing for me to do is also set it up to provide internet access for the small shop as well. So it will have one external, WAN facing nic that needs all incoming ports except UDP 5060 and 10000 -> 60000 blocked for all but two ips.

Hello again, unfortunately the following /etc/sysconfig/iptables file does not work: *nat :INPUT ACCEPT :OUTPUT ACCEPT :PREROUTING ACCEPT :POSTROUTING ACCEPT #-A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 -A PREROUTING -p tcp -m tcp -d 144.76.184.154/32 --dport 80 -j REDIRECT --to-ports 8080 COMMIT *filter :INPUT DROP :OUTPUT ACCEPT :FORWARD DROP -A INPUT -m state --state

Good evening, on a CentOS 7 LAMP (not gateway) dedicated server I am using iptables-services with the following /etc/sysconfig/iptables: *filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [294:35064] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p icmp -m icmp --icmp-type any -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp -m

Hello Gordon and others On Tue, Jun 21, 2016 at 4:13 PM, Gordon Messmer <gordon.messmer at gmail.com> wrote: > On 06/21/2016 02:30 AM, Alexander Farber wrote: > >> -A PREROUTING -p tcp -m tcp -d 144.76.184.154/32 --dport 80 -j REDIRECT >> --to-ports 8080 >> > > > I think you have the ports backward, here. > here the problem description again: I have

I know that I have asked this before of the list. However we just changed ISP and ip's and I'm having this issue again. I have a linux firewall using iptables with the following config eth0 = WAN 1 eth1 = LAN 1 eth2 = WAN 2 I'm trying to forward all traffic that makes a request from eth2 to an internal IP on eth1. These are the folloing rules that I have set up. iptables -t nat -A

I am experimenting with a kvm virtual machine. At the moment I trying to configure iptables for the the host instance. In Xen terms I would call this Dom0 but I do not know the appropriate KVM term, if any. The setup I have is a single NIC (eth0) host bridged (bridge0). I want iptables to allow all host generated traffic (! bridge0 I think) and to check all other traffic for brute force

Louis, Made the changes. Still unable to mount office. Firewall also blocks Thunderbird mail and maybe internet. Will check that more fully later.Any thoughts ob Tony's response? Outputs: martin at radio:/etc$ sudo apt-get install ufw Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no

Hello All, I have a strange problem regarding samba 3.0.37 I have samba server installed in the local network behind NAT, the router iptables are configured as follows: #samba $IPT -t nat -A PREROUTING -i $INET_IFACE -p udp -d $INET_IP -m multiport --dports 137,138 -j DNAT --to-destination $FILESERV $IPT -t nat -A PREROUTING -i $INET_IFACE -p tcp -d $INET_IP -m multiport

This is a minor release of Shorewall. WARNING: This release introduces incompatibilities with prior releases. See http://www.shorewall.net/upgrade_issues.htm. Changes are: a) There is now a new NONE policy specifiable in /etc/shorewall/policy. This policy will cause Shorewall to assume that there will never be any traffic between the source and destination zones. b) Shorewall no longer

Rowland, OK. Should I delete these lines? diff yours mine 63d62 yours# -A ufw-after-logging-output -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW ALLOW] " 85,87d83 yours# -A ufw-before-logging-forward -m conntrack --ctstate NEW -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW AUDIT] " yours# -A ufw-before-logging-input -m conntrack

When do you know you need the "-m multiport" option? I see examples with -dport xx:xxx for example that sometimes use it and sometimes don't? I have read the man page and see what "-m multiport" requires, but don't see the requirement involving its use. Thanks! jlc

I''ve uploaded Beta 4. It corrects a bad bug involving exclusion in the hosts file. In addition, it contains the first release of a new Bridge/firewall implementation that uses the reduced-function physdev match found in kernel 3.6.20 and 3.6.21. -Tom -- Tom Eastep \ Nothing is foolproof to a sufficiently talented fool Shoreline, \ http://shorewall.net Washington USA \

I''ve uploaded Beta 4. It corrects a bad bug involving exclusion in the hosts file. In addition, it contains the first release of a new Bridge/firewall implementation that uses the reduced-function physdev match found in kernel 3.6.20 and 3.6.21. -Tom -- Tom Eastep \ Nothing is foolproof to a sufficiently talented fool Shoreline, \ http://shorewall.net Washington USA \

Hello, I''m using Linux kernel 2.6.x and tc (from iproute2 package). I''m trying to use HTB or HFSC scheduler in order to limite the rate of outgoing packets and also in order to minimiez delay for RTP stream. But I didn''t suceed in having this 2 QoS services working. I use Iptables in order to classify packets. Here is my HFSC conf. In fact the pings that i send from

Rowland, Did some editing in smb.conf that I had to reverse. Now I'm back to being able to connect with the firewall disabled. When I enable the firewall I get as far as windows network -> workgroup but no connection. I have only the rules you recommended in your last email. Louis, The information you requested is below: martin at radio:~$ dpkg -l|egrep "iptables|ufw" ii