similar to: PREROUTING - DNAT with iptables for an ASTERISK BOX

I suppose a few questions pop up on this list about access Samba through a firewall. ?I have been very successful running Samba through a firewall, until today. ?I hit a stumbling block. I have a Linux Firewall with the public IP Address of 134.x.x.140 <it is not the exact ip address, but close>. ?I am using NAT and port forwarding to send traffic destined for 137, 138,139, and 445 for BOTH

Hello, I have a webcam that I wish to view from the internet. It is a wireless linksys model with an ip address of 192.168.1.15. I have it set on port 8081, 192.168.1.15:8081. I am using the IP Masquerade HowTo script. Here's the rule I added to my firewall script: EXTIF="ppp0" INTIF="eth1" EXTIP="`$IFCONFIG $EXTIF | grep inet | cut -d : -f 2 | cut -d \ -f

Hello. I'm moving from a very old Fedora Core 1 to CentOS 4.4, what a change!! Three year ago, I wrote some script (network related) and worked very well. Now, I can put into init.d by means of chkconfig and I restarted the system, but always hang when executing my srcipt (in my new centos 4.4). There a manual for making scripts for init.d? there is some new requirement by which it does not

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

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

Easy question here: I have a test network that looks like this (apologies for my lack of ascii skills): [hostc]---------------[Firewall]192.168.42.1 (EXTIF: eth0) /10.0.0.1 (INTIF: eth1) 192.168.42.10 (wan) |(lan) | +-------------[hosta] 10.0.0.10 (port 4242) | +-------------[hostb]

ei tuka imam edin pf conf obache pravi mnogo nomera, kato se pusne parvoto koeto e dropva paketi, timeoutva po serverite i t.n.. i speed-a e mnogo baven, vijte ako nqkoi moje da otkrie generalna greshka da reply :) vapreki che ne e freebsd-specific :P ne sym go pisal az a i ne sam mnogo mnogo zapoznat s pf zatova ako nqkoi moje da pomogne e dobre doshyl :) btw moje i neshto ot tia opcii kato set

Hi all, I need a little help, i am studing htb to control user bandwidth (download/upload) and I made a script as below to test. I am testing using ttcp tool from by linux box to other linux (192.168.200.51). my box <---- Linux = more than 128kbit mybot -----> Linux = get 128kbit But I want to control both ways, what am I missing? script: EXTIF=eth0 INTIF=eth1 TC=/sbin/tc DOWN=128

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

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

Hi All, I want to put a ASTERISK BOX bend a Firewall. So I have given below rules. iptables -A FORWARD -p udp -d 192.168.101.30 -m multiport --dports 3478,4569,5060 -m state --state NEW -j ACCEPT iptables -A FORWARD -p udp -d 192.168.101.30 --dport 10000:20000 -m state --state NEW -j ACCEPT iptables -t nat -A PREROUTING -p udp -i eth0 -d 1.2.3.4 -m multiport --dports 3478,4569,5060 -j DNAT

Hi there. I have followed some documents found here and there, but do not have already success implementing a script using iptables and iproute. What I need is to send all traffic trough an ADSL line, but mail trough an expensive and slow DS0. The mail server lies on the PC acting also as firewall. I include the script. When using that I get some error messages (I found that the flush command

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

> Seems like your firewall could redirect to a different port that doesn't > offer starttls. Yes, of course. But that would require multiple ports, making the client configuration cumbersome and error-prone. Michael

I'm trying to connect a sip call from sipgate to Asterisk A to Asterisk B. Both are behind NAT, but port forwarded. I get the connection, but no voice - either in or out. I can call on SIP from A to B (and from B to A). Do it all the time. Asterisk A receives SIP calls from Junction and Teliax. CLI on A looks right: == Using SIP RTP TOS bits 184 == Using SIP RTP CoS mark 5 ==

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

-------- 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

Hi all, I´m running a server that frecuently needs to open a pptp session with a remote server outside my Company. This server is running behind a Shorewall firewall and I don´t find information in Shorewall web page because there is no information in the link http://www.shorewall.net/PPTP.htm#ClientsBehind Nowadays I can connect this server with the remote one but te session is closed after

Hi, I know these are a few iptbales questions. NOT CentOS, anyway, I am running a firewall on centos 5.x. If you can response, it would be fine. I want to add a SNAT rule for one user in LAN to access one particular destination on the internet. Let's say www.centos.org I added the below rule. But . it does NOT work Pls assume 1.2.3.4 is the real ip of the firewall. ip address

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