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mactelnet(1) [debian man page]

MACTELNET(1)						      General Commands Manual						      MACTELNET(1)

mactelnet - A tool for telneting via MAC addresses SYNOPSIS
mactelnet [options] <MAC-Address|hostname> DESCRIPTION
This tool enables you to telnet other RouterOS or MAC-Telnetd enabled devices. You can connect to either a hostname or a MAC address. If specified, the hostname (identity) will be looked up via MNDP discovery. OPTIONS
These programs follow the usual GNU command line syntax. A summary of options is included below. -n Do not use broadcast packets. A tad less insecure but requires root privileges. This means that ethernet packets will have the specified mac-address as the packet destination, instead of using the ethernet broadcast address. -t Amount of seconds to wait for a response on each interface. If you have several network interfaces, this is the timeout value per interface. -u Specify username. Without this option, you will need to enter the username in a interactive prompt. -p Specify password. Without this option, you will need to enter the password in a interactive prompt. -h Show summary of options. -v Show version of program. SEE ALSO
mndp(1), mactelnetd(1), macping(1). AUTHOR
mactelnet was written by Hakon Nessjoen <>. This manual page was written by Hakon Nessjoen <>, for the Debian project (and may be used by others). February 27, 2011 MACTELNET(1)

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ARPWATCH(8)						      System Manager's Manual						       ARPWATCH(8)

arpwatch - keep track of ethernet/ip address pairings SYNOPSIS
arpwatch [ -dN ] [ -f datafile ] [ -i interface ] [ -n net[/width ]] [ -r file ] [ -u username ] [ -e username ] [ -s username ] DESCRIPTION
Arpwatch keeps track for MAC/IP address pairings. It syslogs activity and reports certain changes via email. Arpwatch uses pcap(3) to lis- ten for arp packets on a local ethernet/tokenring/fddi interface. The -d flag is used enable debugging. This also inhibits forking into the background and emailing the reports. Instead, they are sent to stderr. The -f flag is used to set the MAC/IP address database filename. The default is arp.dat. The -i flag is used to override the default interface. The -n flag specifies additional local networks. This can be useful to avoid "bogon" warnings when there is more than one network running on the same wire. If the optional width is not specified, the default netmask for the network's class is used. The -N flag disables reporting any bogons. The -r flag is used to specify a savefile (perhaps created by tcpdump(1) or pcapture(1)) to read from instead of reading from the network. In this case, arpwatch does not fork. If -u flag is used, arpwatch drops root privileges and changes user ID to username and group ID to that of the primary group of username. This is recommended for security reasons. If the -e flag is used, arpwatch sends e-mail messages to username rather than the default (root). If a single `-' character is given for the username, sending of e-mail is suppressed, but logging via syslog is still done as usual. (This can be useful during initial runs, to collect data without being flooded with messages about new stations.) If the -s flag is used, arpwatch sends e-mail messages with username as the return address, rather than the default (root). Note that an empty arp.dat file must be created before the first time you run arpwatch. Also, the default directory (where arp.dat is stored) must be owned by username if -u flag is used. REPORT MESSAGES
Here's a quick list of the report messages generated by arpwatch(1) (and arpsnmp(1)): new activity This MAC/IP address pair has been used for the first time six months or more. new station The MAC address has not been seen before. flip flop The MAC address has changed from the most recently seen address to the second most recently seen address. (If either the old or new MAC address is a DECnet address and it is less than 24 hours, the email version of the report is suppressed.) changed MAC address The host switched to a new MAC address. SYSLOG MESSAGES
Here are some of the syslog messages; note that messages that are reported are also sysloged. MAC broadcast The MAC address of the host is a broadcast address. ip broadcast The ip address of the host is a broadcast address. bogon The source ip address is not local to the local subnet. MAC broadcast The source MAC address was all ones or all zeros. MAC mismatch The source MAC address didn't match the address inside the arp packet. reused old MAC address The MAC address has changed from the most recently seen address to the third (or greater) least recently seen address. (This is similar to a flip flop.) suppressed DECnet flip flop A "flip flop" report was suppressed because one of the two addresses was a DECnet address. FILES
/usr/operator/arpwatch - default directory arp.dat - MAC/IP address database ethercodes.dat - vendor ethernet block list SEE ALSO
arpsnmp(8), arp(8), bpf(4), tcpdump(1), pcapture(1), pcap(3) AUTHORS
Craig Leres of the Lawrence Berkeley National Laboratory Network Research Group, University of California, Berkeley, CA. The current version is available via anonymous ftp: BUGS
Please send bug reports to Attempts are made to suppress DECnet flip flops but they aren't always successful. Most error messages are posted using syslog. 4th Berkeley Distribution 8 October 2000 ARPWATCH(8)
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