On Sat, August 29, 2015 6:53 am, to...@tuxteam.de wrote:
> Also netstat (issued from your laptop) gives insight. For example
> 'netstat - -lntu' shows you the TCP or UDP listening sockets. If you are
> root (or sudo, of course), the extra option -p tells you which process is
> "at the other side" listening.
>
> Note that the dhcp client itself (which you need to get an IP address to
> take part in your customer's network) puts you already at some risk,
> depending on how it's configured.
Here is the output from the laptop:
# netstat -lntup
Active Internet connections (only servers)
Prot Rec Snd Local Address Foreign State PID/Program name
-Q -Q Address
tcp 0 0 0.0.0.0:9999 0.0.0.0:* LIS 561/inetd
tcp 0 0 0.0.0.0:111 0.0.0.0:* LIS 530/rpcbind
tcp 0 0 0.0.0.0:46225 0.0.0.0:* LIS 540/rpc.statd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LIS 568/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LIS 1248/cupsd
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LIS 675/postgres
tcp 0 0 127.0.0.1:25 0.0.0.0:* LIS 1063/exim4
tcp 0 0 127.0.0.1:2628 0.0.0.0:* LIS 599/0
tcp6 0 0 :::111 :::* LIS 530/rpcbind
tcp6 0 0 :::38930 :::* LIS 540/rpc.statd
tcp6 0 0 :::22 :::* LIS 568/sshd
tcp6 0 0 ::1:631 :::* LIS 1248/cupsd
tcp6 0 0 ::1:5432 :::* LIS 675/postgres
tcp6 0 0 ::1:25 :::* LIS 1063/exim4
udp 0 0 0.0.0.0:36358 0.0.0.0:* 612/avahi-daemon:r
udp 0 0 0.0.0.0:631 0.0.0.0:* 647/cups-browsed
udp 0 0 0.0.0.0:689 0.0.0.0:* 530/rpcbind
udp 0 0 127.0.0.1:716 0.0.0.0:* 540/rpc.statd
udp 0 0 0.0.0.0:57106 0.0.0.0:* 540/rpc.statd
udp 0 0 0.0.0.0:111 0.0.0.0:* 530/rpcbind
udp 0 0 192.168.1.99:123 0.0.0.0:* 664/ntpd
udp 0 0 127.0.0.1:123 0.0.0.0:* 664/ntpd
udp 0 0 0.0.0.0:123 0.0.0.0:* 664/ntpd
udp 0 0 0.0.0.0:5353 0.0.0.0:* 612/avahi-daemon:r
udp6 0 0 :::689 :::* 530/rpcbind
udp6 0 0 :::43913 :::* 540/rpc.statd
udp6 0 0 :::111 :::* 530/rpcbind
udp6 0 0 fe80::ba70:f4ff:fe2:123 :::* 664/ntpd
udp6 0 0 ::1:123 :::* 664/ntpd
udp6 0 0 :::123 :::* 664/ntpd
udp6 0 0 :::5353 :::* 612/avahi-daemon:r
udp6 0 0 :::44274 :::* 612/avahi-daemon:r
#
Regrettably, the formatting of the output does not consider the need to
include the output in the body of an e-mail, so editing was required to
remove excess spaces so as to prevent every line from being wrapped.
RLH
