View the most recent changes for the dsniff port at: dsniff.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for dsniff.
The raw portfile for dsniff 2.3 is located here:
http://dsniff.darwinports.com/dports/net/dsniff/Portfile
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Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/dsniff

The dsniff Portfile 56993 2009-09-04 12:51:37Z snc macports.org $

PortSystem 1.0
Name: dsniff
Version: 2.3
Revision: 3
Category: net
Maintainers: nomaintainer
Description: network auditing and penetration testing tools
Long Description: dsniff is a collection of tools for network auditing and penetration testing. dsniff, filesnarf, mailsnarf, msgsnarf, urlsnarf, and webspy passively monitor a network for interesting data (passwords, e-mail, files, etc.). arpspoof, dnsspoof, and macof facilitate the interception of network traffic normally unavailable to an attacker (e.g, due to layer-2 switching). sshmitm and webmitm implement active monkey-in-the-middle attacks against redirected SSH and HTTPS sessions by exploiting weak bindings in ad-hoc PKI.
Homepage: http://monkey.org/~dugsong/dsniff/
Platform: darwin

depends_lib port:libpcap
depends_build port:libnet lib:libnids:libnids

Master Sites: ${homepage}
Checksums: md5 183e336a45e38013f3af840bddec44b4

Patch Files: patch-pcaputil.c patch-sshcrypto.c

configure.args --mandir=${prefix}/share/man
configure.cflags-append "-DBIND_8_COMPAT"

destroot.destdir install_prefix=${destroot}

If you haven't already installed Darwin Ports, you can find easy instructions for doing so at the main Darwin Ports page.
Once Darwin Ports has been installed, in a terminal window and while online, type the following and hit return:

%  cd /opt/local/bin/portslocation/dports/dsniff
%  sudo port install dsniff  
Password: 

You will then be prompted for your root password, which you should enter. You may have to wait for a few minutes while the software is retrieved from the network and installed for you. Y ou should see something that looks similar to:

--->  Fetching dsniff
--->  Verifying checksum for dsniff
--->  Extracting dsniff
--->  Configuring dsniff
--->  Building dsniff with target all

--->  Staging dsniff into destroot

--->  Installing dsniff

- Make sure that you do not close the terminal window while Darwin Ports is working. Once the software has been installed, you can find further information about using dsniff with these commands:

%  man dsniff
%  apropos dsniff
%  which dsniff
%  locate dsniff

 Where to find more information: