12-24-2019
telnet ip.addr
will connect where the ip.addr is the destination.
If you are trying to spoof your ip try using the
nc command instead. (
nc is also called
netcat)
how to "telnet" from a specific source IP?
telnet uses the OS to set it's source IP, you cannot specify it on the command line.
Last edited by jim mcnamara; 12-24-2019 at 06:45 PM..
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LEARN ABOUT FREEBSD
mtest
MTEST(8) BSD System Manager's Manual MTEST(8)
NAME
mtest -- test multicast socket operations
SYNOPSIS
mtest
DESCRIPTION
The mtest utility is a small program for testing multicast socket operations.
It accepts the following commands, interactively, or as part of a scripted input file (useful for automated testing):
a ifname mac-addr Join the link-layer group address mac-addr on interface ifname. The group address should be in IEEE 802 MAC
format, delimited by colon (':') characters.
d ifname mac-addr Leave the link-layer group address mac-addr on interface ifname.
m ifname 1/0 Set or reset ALLMULTI mode on interface ifname. This option is deprecated and is now a no-op.
p ifname 1/0 Set or reset promiscuous mode on interface ifname.
j mcast-addr ifname [source-addr]
Join the multicast address mcast-addr on the interface with name ifname.
If an optional source source-addr is specified, a source-specific join will be performed; if mtest is already
joined to the multicast address, the source will be added to its filter list.
l mcast-addr ifname [source-addr]
Leave the multicast address mcast-addr on the interface with address ifname. If a source source-addr is
specified, only that source will be left.
i mcast-addr ifname n source-addr ...
Set the socket with membership of mcast-addr on interface ifname to include filter mode, and add n sources
beginning with source-addr to the inclusion filter list.
e mcast-addr ifname n source-addr ...
Set the socket with membership of mcast-addr on interface ifname to exclude filter mode, and add n sources
beginning with source-addr to the exclusion filter list.
t mcast-addr ifname source-addr
Set the socket with membership of mcast-addr on interface ifname to block traffic from source source-addr.
b mcast-addr ifname source-addr
Set the socket with membership of mcast-addr on interface ifname to allow traffic from source source-addr.
g mcast-addr ifname n Print n source filter entries for mcast-addr on interface ifname.
f filename Read commands from the file filename.
s n Sleep for n seconds.
? List legal commands.
q Quit the program.
IMPLEMENTATION NOTES
For each command implemented by mtest, the address family of each argument must be identical; it is not possible to mix IPv4 multicast mem-
berships with IPv6, for example.
To support IPv6, all commands have now changed to accept an interface name rather than an interface address. For IPv4, the program will per-
form a lookup of the primary IP address based on the interface name. This may fail if no primary IP address is assigned.
SEE ALSO
D. Thaler, B. Fenner, and B. Quinn, Socket Interface Extensions for Multicast Filters, RFC 3678.
AUTHORS
Bruce Simpson
Steve Deering
Wilbert De Graaf
BSD
April 29, 2009 BSD