While the Solaris has the updated netstat with -u flag, illumos requires certain improvements in sockinfo, and possibly, rpcbind (tcpConnCreationProcess shows the old PID for rpcbind, until it did not become a demon). With help of pfiles is possible to obtain the desired information about pid for particular port, so I wrote a small pfiles-based utility which allows to determine the PID, user and command for the particular port:
# ./ptcpstat PROTO IP PORT PID USER COMMAND -------- ------------------- ----- ------ -------- ------------------ AF_INET 127.0.0.1 25 692 root /usr/lib/smtp/sendmail/sendmail -bl -q15m AF_INET6 ::1 25 692 root /usr/lib/smtp/sendmail/sendmail -bl -q15m AF_INET 127.0.0.1 587 692 root /usr/lib/smtp/sendmail/sendmail -bl -q15m AF_INET6 :: 22 605 root /usr/lib/ssh/sshd AF_INET6 :: 0 495 root /usr/lib/inet/in.ndpd AF_INET 0.0.0.0 520 637 root /usr/sbin/in.routed AF_INET 0.0.0.0 0 637 root /usr/sbin/in.routed AF_INET 0.0.0.0 10004 685 root /usr/bin/python2.6 /usr/lib/pkg.depotd --cfg svc:/application/pkg/server:test AF_INET 0.0.0.0 10000 9354 root /usr/bin/python2.6 /usr/lib/pkg.depotd --cfg svc:/application/pkg/server:zfs AF_INET6 ::ffff:198.168.1.1 22 2315 root /usr/lib/ssh/sshd AF_INET6 ::ffff:10.8.0.30 56027 2315 root /usr/lib/ssh/sshd AF_INET 0.0.0.0 80 1402 root /usr/bin/python2.6 /usr/lib/pkg.depotd --cfg svc:/application/pkg/server:defaul AF_INET6 ::ffff:198.168.1.1 22 2314 root /usr/lib/ssh/sshd AF_INET6 ::ffff:10.8.0.30 56027 2314 root /usr/lib/ssh/sshd