Sponsored Content
Special Forums IP Networking Configure router to allow smtp traffic Post 302252908 by h3llh0l3 on Thursday 30th of October 2008 02:59:38 PM
Old 10-30-2008
Configure router to allow smtp traffic

Hello all,

I have installed ubuntu hardy and for some testing I have configured sendmail on it.
I have a router facing the internet and I am having hard time configuring the router to allow traffic on port 25 to my server. I have a BCM96338 ADSL Router. I have set iptable rules to allow the traffic on port 25 on the router. When I do a telnet localhost 25, from my linux machine, it connects to the smtp server, but if I try telnet xxx.xxx.xxx.xxx 25 from another computer on the LAN or from different network it does not connect.
Here is how my iptables rule look like:
xxx.xxx.xxx.xxx -> IP Address of my linux machine

Code:
Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
ACCEPT     tcp  --  anywhere             xxx.xxx.xxx.xxx        tcp dpt:smtp

Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination
DNAT       tcp  --  anywhere             anywhere            tcp dpt:smtp to:xxx.xxx.xxx.xxx

Could some one please point into the right direction to fix this.

Thanks Smilie
 

10 More Discussions You Might Find Interesting

1. Linux

how to configure linux AS4 as a router

Hi, anybody show me how to configure linux AS4 as a router. my linux server has 2 NICs, one connects to DSL modem (10.0.0.0/24) , and other one connects to private LAN (192.168.1.0/24). TIA Bong (2 Replies)
Discussion started by: bong02
2 Replies

2. UNIX for Advanced & Expert Users

Configure SMTP Server for Unix

Hi, We had an upgrade today morning and since then mailx command is not working. I have been told to change the DNS to use host name as smtp.companyname.com instead of the IP address. Can someone please help me out to know where can I change this on a Unix Server. Thanks Aman (5 Replies)
Discussion started by: chawlaaman
5 Replies

3. SCO

SCO 5.0.7 Sendmail. Need help on how to configure SMTP

Did anyone know or can provide some instructions on how to setup smtp for sendmail. All I need to do is email files from sco thru my ISP smtp provider. please help (3 Replies)
Discussion started by: miles556
3 Replies

4. UNIX for Advanced & Expert Users

How to configure Linux box with my SMTP mail server

Hi all, I need to send mail to a particular email id using a local mail server.This mail shall contain the content of a file. I don't have any idea how to do it. Can anyone guide me ,where to start proceeding for it. Any guide or study material would appreciated. (1 Reply)
Discussion started by: amit_kv1983
1 Replies

5. UNIX and Linux Applications

SMTP traffic filter on FreeBSD 7.0 gateway

Hello, I have a question about ways to filter smtp traffic that passes from LAN through FreeBSD 7.0 machine (configured with NAT and gateway="yes" in /etc/rc.conf) to the Internet. I've installed both SpamAssassin and ClamAv, and now need the software that would listen to port 25 on private... (1 Reply)
Discussion started by: matagou
1 Replies

6. Linux

Configure SMTP service in linux 5.2

Hi All, How to configure SMTP service in linux 5.2? Please provide me the steps. Thanks Jack (5 Replies)
Discussion started by: jack00423
5 Replies

7. Cybersecurity

Monitoring network traffic on wireless router

Hi all, How can I monitor packet traffic on my wireless router? Some info - my wireless router is netgear wgr614 - everyone can connect it i.e. no password required - I would like to see where they connect, how they are using the internet connection I installed wireshark and captured... (3 Replies)
Discussion started by: SaTYR
3 Replies

8. IP Networking

How does a router directs the internet traffic to a specific host in the private network?

how does a router directs the internet traffic to a specific host in the private network? Example: My PC has ip 192.168.134.100 Router has ip 192.168.134.200 My company's ip 202.52.150.33 When i try to access internet, say google, it traverses from... (1 Reply)
Discussion started by: Arun_Linux
1 Replies

9. IP Networking

Upload problem with traffic shaping though a Linux router.

So I want to limit the download and upload speed of a specific ip adress in a local network. To do this I are using a bach script running in a linux OS (Ubuntu 11.04). The issue here is that the upload shaper does not work. I have tried an alternate solution aswell though that does not work as... (0 Replies)
Discussion started by: martio09
0 Replies

10. Solaris

Configure sendmail with SMTP

Hello, I'm trying to configure sendmail with SMTP authentication on a SunOS 5.11 operating system. I have been read various documentation / tutorials and unfortunately is not working. I need help from someone who has configured smtp on this operating system. When I try to send a mail, I have... (2 Replies)
Discussion started by: d4rkm4nx99
2 Replies
face(1) 							   User Commands							   face(1)

NAME
face - executable for the Framed Access Command Environment Interface SYNOPSIS
face [-i init_file] [-c command_file] [-a alias_file] [filename...] DESCRIPTION
The Framed Access Command Environment Interface (FACE) presents your files and file folders on the screen through a system of menus and forms if you are properly set up as a FACE user. filename must follow the naming convention Menu.xxx for a menu, Form.xxx for a form, and Text.xxx for a text file, where xxx is any string that conforms to the UNIX system file naming conventions. The Form and Menu Language Interpreter (FMLI) descriptor lifetime will be ignored for all frames opened by argument to face. These frames have a lifetime of immortal by default. If filename is not specified on the command line, the FACE Menu will be opened along with those objects specified by the LOGINWIN environment variables. These variables are found in the user's .environ file. OPTIONS
The following options are supported: -a alias_file Alias file -c command_file Command file -i init_file Initial file OPERANDS
The following operand is supported: filename The full pathname of the file describing the object to be opened initially. EXIT STATUS
The face command will return a non-zero exit value if the user is not properly set up as a FACE user. FILES
$HOME/pref/.environ ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWfac | +-----------------------------+-----------------------------+ SEE ALSO
env(1), attributes(5) SunOS 5.10 5 Jul 1990 face(1)
All times are GMT -4. The time now is 08:42 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy