Changes between Version 104 and Version 105 of AnonymityModule

Timestamp:

Jul 7, 2011 11:49:41 AM (13 years ago)

Author:

TTaggart

Comment:

--

AnonymityModule

@@ -94 +94 @@
 === Direct Client-to-Server Traffic ===
 Then type the command `sudo tcpdump -i eth0 -s 0 -x -w /tmp/direct.pcap.` This will begin listening to the traffic that comes through this node and that specific ethernet link, eth0 in the example, write the data out to the file direct.pcap in the tmp diretory.  At this time, the person connected to Alice will enter the command `wget --no-proxy http://server1/cgi-bin/ip.cgi` This saves a local copy of the web page set up on the server, and by doing so generates HTTP traffic to examine. We were able to listen in on this traffic thanks to the `tcpdump` command. Then the users connected to Server1 will enter the command `cp /tmp/direct.pcap .` This will copy the file with the sniffed data into the users directory. We'll analyze what this data looks like and can tell us at a later time. However if you want to analyze this data now before we sniff more, proceed to Step 3 on this page. 
-To reiterate, the commands are
+To reiterate, the commands are:
  * `sudo tcpdump -i eth0 -s 0 -x -w /tmp/direct.pcap.` from the server
  * `wget --no-proxy http://server1/cgi-bin/ip.cgi` from Alice
@@ -101 +101 @@
 === Client-to-Server Traffic through a Proxy ===
 Now we'll use a proxy to make this traffic a bit more anonymous.  A proxy will mask the source and destination of the traffic from both the client and the server by working as a go between for the two nodes.  Repeat the `tcpdump` command `sudo tcpdump -i eth0 -s 0 -x -w /tmp/throughproxy.pcap.` However, now the user connected to Alice should enter the command `env http_proxy=http://proxy:8888 wget http://server1/cgi-bin/ip.cgi` This command changes an environmental setting and sends the `wget` command through the proxy on port 8888.  Thanks to the `tcpdump` command, we have a copy of this traffic as well. Then the user on the Server1 node should enter `cp /tmp/throughproxy.pcap .` This saves us a copy of the data.
+Again, in order:
+ * `sudo tcpdump -i eth0 -s 0 -x -w /tmp/direct.pcap.` from the server
+ * `env http_proxy=http://proxy:8888 wget http://server1/cgi-bin/ip.cgi` from Alice
+ * `cp /tmp/direct.pcap .` from the server after closing the tcpdump
 
 === Client-to-Server Traffic through Tor ===