I'm looking for a good packet sniffer, does anyone have any suggestions? I would prefer a free packet sniffer, but am willing to pay also. Thank you
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I'm looking for a good packet sniffer, does anyone have any suggestions? I would prefer a free packet sniffer, but am willing to pay also. Thank you
I prefer tcpdump (or windump on windows): http://www.tcpdump.org/ and http://windump.polito.it/
And I think ethereal is the best for analysing packets: www.ethereal.com
Snort
http://www.snort.org
Packet sniffer with more
and its free
ettercap is very nice and versatile. the ARP functionality is fun too.
http://ettercap.sourceforge.net/
Quote:
Characters injection in an established connection : you can inject character to server (emulating commands) or to client (emulating replies) maintaining the connection alive !!
SSH1 support : you can sniff User and Pass, and even the data of an SSH1 connection. ettercap is the first software capable to sniff an SSH connection in FULL-DUPLEX
HTTPS support : you can sniff http SSL secured data... and even if the connection is made through a PROXY
Remote traffic through GRE tunnel: you can sniff remote traffic through a GRE tunnel from a remote cisco router and make mitm attack on it
PPTP broker: you can perform man in the middle attack against PPTP tunnels
Plug-ins support : You can create your own plugin using the ettercap's API.
List of available plugins
Password collector for : TELNET, FTP, POP, RLOGIN, SSH1, ICQ, SMB, MySQL, HTTP, NNTP, X11, NAPSTER, IRC, RIP, BGP, SOCKS 5, IMAP 4, VNC, LDAP, NFS, SNMP, HALF LIFE, QUAKE 3, MSN, YMSG (other protocols coming soon...)
Paket filtering/dropping: You can set up a filter that search for a particular string (even hex) in the TCP or UDP payload and replace it with yours or drop the entire packet.
OS fingerprint: you can fingerprint the OS of the victim host and even its network adapter
Kill a connection: from the connections list you can kill all the connections you want
Passive scanning of the LAN: you can retrive infos about: hosts in the lan, open ports, services version, type of the host (gateway, router or simple host) and extimated distance in hop.
Check for other poisoners: ettercap has the ability to actively or passively find other poisoners on the LAN
Bind sniffed data to a local port: you can connect to that port with a client and decode unknown portocols or inject data to it (only in arp based mode)
Port Stealing: a new method to sniff on switched LAN without ARP poisoning...
As el-half has already stated - Ethereal....
'nuff said...
Ethereal if you want something thats free. As far as commercail sniffers go I like Iris by eeye.
ethereal for windows... as stated twice already!
Thank you all very much!!