The Debian host is happy receiving connections from the outside world.
But VNC on Windows would block packets if they are not from 192.168.1.0/24.
I could remove that restriction on the Windows host but NO, that's not what I want to do. So I'm using one more rule for iptables:
Code:
iptables -t nat -A POSTROUTING -j MASQUERADE
That way, the Windows host believe that the VNC connection is comming from the local server.
For future improvement reasons, I would rather masquerade only certain packets. So my idea is to do something in the nat.PREROUTING chain so that the nat.POSTROUTING chain will be able to tell whether a packet should be masqueraded or not.
My Device is connected to eth1 interface of the host and eth0 is connected to network.
Now when I am pinging google.com from device after executing below commands on host
sudo iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
I am... (0 Replies)
I am using nullmailer on Ubuntu Linux to relay mails however when I send email or through cron it appear as
root@myhostname.domain.com instead of root@domain.com
How do I configure nullmailer so the email send appear as from root@domain.com? (0 Replies)
edit: SOLVED - see below for solution
Hi there,
I've inherited a gob of Linux hosts and so am learning linux from the bottom of the deep end of the pool (gotta say I'm warming up to Linux though - it's not half bad)
Right now iptables is confusing me and I could use some pointers as to how... (0 Replies)
I'm trying to configure sendmail masquerading and it seems like I'm having a problem with m4.
My main problem is that internally generated emails are showing up externally as originating from: internal_user@internal1.mydomain.com.
internal1.mydomain.com doesn't resolve publicly, nor should it.... (1 Reply)
Hi,
Please tell me what is sendmail masquarade and what is the use of it?
Its pretty confusing :eek:..
Is it all about like when mail is sent from sender to receiver, the receiver cannot see the hostname/internal username of sender..
And I found they constitute various classes like class... (0 Replies)
Hello!
I have the following problem with iptables in Debian 6:
My server works as a router and it needs to log server external IP+port for all outgoing connections.
But after command SNAT or MASQUERADE traffic is "lost".
I mean no following rules can catch those traffic.
Everything looks... (0 Replies)
Hi,
I'm brand new here and looking for a solution:
I'm using mail or mailx. The default reply address is «myshortusername@mylongusername.local» which makes absolutely no sense for anybody receiving my emails.
But how do I change it? There seem to be many solutions but none for Mac OS X.... (0 Replies)
I have a SCO 5.06 box running sendmail 8.11. I have set up sendmail to masquerade the domainname as bar.com.
ie in the sendmail.cf file the directive
DMbar.com is set.
When I send mail using mail/mailx, it appends the local hostname "foo" to the masquerade address and inserts this into... (1 Reply)
Greetings to all.
My new firewall is giving me one hell of a problem.
I'm running iptables and masquerading my intranet
thru NAT. But here is the problem. Whenever I try
to FTP to a server outside of my lan I get a 500
illegal port error.
I've come to the conclusion that NAT is... (2 Replies)