Formatted all pages according to guidelines.

pages/common/tcpdump.md

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 # tcpdump
 
-> Dump traffic on a network
+> Dump traffic on a network.
 
-- capture the traffic of a specific interface
+- Capture the traffic of a specific interface:
 
 `tcpdump -i {{eth0}}`
 
-- capture all TCP traffic showing contents (ASCII) in console
+- Capture all TCP traffic showing contents (ASCII) in console:
 
 `tcpdump -A tcp`
 
-- capture the traffic from or to a host
+- Capture the traffic from or to a host:
 
 `tcpdump host {{www.example.com}}`
 
-- capture the traffic from a specific interface, source, destination and destination port
+- Capture the traffic from a specific interface, source, destination and destination port:
 
 `tcpdump -i {{eth0}} src {{192.168.1.1}} and dst {{192.168.1.2}} and dst port 80`
 
-- capture the traffic of a network
+- Capture the traffic of a network:
 
 `tcpdump net {{192.168.1.0/24}}`
 
-- capture all traffic except traffic over port 22 and save to a dump file
+- Capture all traffic except traffic over port 22 and save to a dump file:
 
 `tcpdump -w dumpfile.pcap not port 22`