IFTOP(8) System Manager's Manual IFTOP(8) (NAME) iftop - (SYNOPSIS) iftop -h | [-nNpblBP] [-i interface] [-f filter code] [-F net/mask] [-G net6/mask6] (DESCRIPTION) iftop . iftop pcap(3) (root) . iftop (DNS Lookup) . . DNS not port domain -n r . iftop IP . -F iftop . iftop -F 10.0.0.0/255.0.0.0 *10 . : not ether host ff:ff:ff:ff:ff:ff (broadcast) . port http and not host webcache.example.com (web cache) . icmp (OPTIONS) -h . -n (DNS lookup). -N () . -p (promiscuous mode) . -P (). -l IPv6 (link-local). . -b . -m limit . 'K' 'M' 'G' . -B . -i interface (interface). -f filter code filter code . IP (filter code) and ip . -F net/mask IPv4 . iftop . mask ( /255.255.255.0) ( /24) . -G net6/mask6 IPv6 . mask6 . -c config file . iftop ~/.iftoprc . . -t text output mode ncurses (STDOUT). (DISPLAY) iftop . . . <= => . : foo.example.com => bar.example.com 1Kb 500b 100b <= 2Mb 2Mb 2Mb foo.example.com bar.example.com . . . foo HTTP bar bar . ( ) . ( ) . / (SOURCE / DEST AGGREGATION) s d iftop . iftop (promiscuous mode) (gateway) . (PORT DISPLAY) S D . p . (DISPLAY TYPE) t . (DISPLAY ORDER) ( ) . 1 2 3 . < > . (DISPLAY FILTERING) l (POSIX extended regular expression) . . . (DO NOT). / (PAUSE DISPLAY / FREEZE ORDER) P (pause). o () . . (SCROLL DISPLAY) j k . ( ). (FILTER CODE) f iftop . . (CONFIG FILE) iftop . -c iftop ~/.iftoprc . . . : interface: eth0 . : interface: if if. dns-resolution: (yes|no) IP ( DNS). port-resolution: (yes|no) . filter-code: bpf bpf. show-bars: (yes|no) . promiscuous: (yes|no) (promiscuous mode). port-display: (off|source-only|destination-only|on) . link-local: (yes|no) IPv6 (link-local). hide-source: (yes|no) . hide-destination: (yes|no) . use-bytes: (yes|no) . sort: (2s|10s|40s|source|destination) . line-display: (two-line|one-line-both|one-line-sent|one-line-received) . show-totals: (yes|no) . log-scale: (yes|no) . max-bandwidth: bw bw "10M". . net-filter: net/mask IP . net-filter6: net6/mask6 IPv6 . screen-filter: regexp . (QUIRKS) ( : ) iftop . . . . . (promiscuous mode) -F . . ( IP) . -F . . . . . . . << >> . (FILES) ~/.iftoprc iftop. (SEE ALSO) tcpdump(8), pcap(3), driftnet(1) (AUTHOR) Paul Warren (VERSION) $Id: iftop.8,v 1.31 2014/01/05 17:22:39 pdw Exp $ (COPYING) (GNU GPL) (FSF) ( ) . . . : Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. IFTOP(8)