Reg port opening

[boomer_2]

Hi guys,
I need to open/check atleast 50 ports..for my application .how will i come to know which port is open and how should i open it from o/s i.e HPUX end ? i think ports r to be opened from firewall right ?

my netstat - na|grep LISTEN shows

# netstat -na|grep LISTEN
tcp 0 0 *.3391 *.* LISTEN
tcp 0 0 10.1.4.19.1521 *.* LISTEN
tcp 0 0 *.135 *.* LISTEN
tcp 0 0 127.0.0.1.49169 *.* LISTEN
tcp 0 0 *.2301 *.* LISTEN
tcp 0 0 *.4755 *.* LISTEN
tcp 0 0 *.852 *.* LISTEN
tcp 0 0 *.544 *.* LISTEN
tcp 0 0 *.543 *.* LISTEN
tcp 0 0 *.1234 *.* LISTEN
tcp 0 0 *.6668 *.* LISTEN
tcp 0 0 *.515 *.* LISTEN
tcp 0 0 *.1249 *.* LISTEN
tcp 0 0 *.6667 *.* LISTEN
tcp 0 0 192.168.0.62.5300 *.* LISTEN
tcp 0 0 *.1521 *.* LISTEN
tcp 0 0 *.49348 *.* LISTEN
tcp 0 0 *.643 *.* LISTEN
tcp 0 0 *.49188 *.* LISTEN
tcp 0 0 *.2049 *.* LISTEN
tcp 0 0 *.111 *.* LISTEN
tcp 0 0 *.49156 *.* LISTEN
tcp 0 0 *.4045 *.* LISTEN
tcp 0 0 *.49155 *.* LISTEN
tcp 0 0 *.1508 *.* LISTEN
tcp 0 0 *.6666 *.* LISTEN
tcp 0 0 *.1241 *.* LISTEN
tcp 0 0 *.2148 *.* LISTEN
tcp 0 0 *.991 *.* LISTEN
tcp 0 0 *.1246 *.* LISTEN
tcp 0 0 *.5303 *.* LISTEN
tcp 0 0 *.49172 *.* LISTEN
tcp 0 0 *.2121 *.* LISTEN
tcp 0 0 *.10864 *.* LISTEN
tcp 0 0 *.5302 *.* LISTEN
tcp 0 0 127.0.0.1.1476 *.* LISTEN
tcp 0 0 192.168.0.62.5301 *.* LISTEN
tcp 0 0 *.22 *.* LISTEN
tcp 0 0 *.49157 *.* LISTEN
tcp 0 0 *.5555 *.* LISTEN
tcp 0 0 *.49153 *.* LISTEN
tcp 0 0 127.0.0.1.49163 *.* LISTEN
tcp 0 0 *.49152 *.* LISTEN
tcp 0 0 *.49154 *.* LISTEN
tcp 0 0 *.6112 *.* LISTEN
tcp 0 0 *.7815 *.* LISTEN
tcp 0 0 *.901 *.* LISTEN
tcp 0 0 *.5989 *.* LISTEN
tcp 0 0 127.0.0.1.7161 *.* LISTEN
tcp 0 0 *.49557 *.* LISTEN
tcp 0 0 *.49560 *.* LISTEN
tcp 0 0 *.37 *.* LISTEN
tcp 0 0 *.7 *.* LISTEN
tcp 0 0 *.9 *.* LISTEN
tcp 0 0 *.19 *.* LISTEN
tcp 0 0 *.113 *.* LISTEN
tcp 0 0 *.13 *.* LISTEN
tcp 0 0 *.513 *.* LISTEN
tcp 0 0 *.514 *.* LISTEN
tcp 0 0 *.512 *.* LISTEN
tcp 0 0 *.21 *.* LISTEN
tcp 0 0 *.49924 *.* LISTEN
tcp 0 0 *.56420 *.* LISTEN
tcp 0 0 *.1712 *.* LISTEN
tcp 0 0 *.49352 *.* LISTEN
tcp 0 0 *.22 *.* LISTEN
tcp 0 0 *.10864 *.* LISTEN
tcp 0 0 *.37 *.* LISTEN
tcp 0 0 *.7 *.* LISTEN
tcp 0 0 *.9 *.* LISTEN
tcp 0 0 *.19 *.* LISTEN
tcp 0 0 *.113 *.* LISTEN
tcp 0 0 *.13 *.* LISTEN
tcp 0 0 *.513 *.* LISTEN
tcp 0 0 *.514 *.* LISTEN
tcp 0 0 *.512 *.* LISTEN
tcp 0 0 *.21 *.* LISTEN
tcp 0 0 *.49924 *.* LISTEN
tcp 0 0 *.56420 *.* LISTEN
tcp 0 0 *.1712 *.* LISTEN
tcp 0 0 *.49352 *.* LISTEN
tcp 0 0 *.22 *.* LISTEN
tcp 0 0 *.10864 *.* LISTEN


and i need atleast 50 ports to be free..

h/w rx4640,8gb ram,hpux 11i v2.....

[Sandman! · Accepted solution]

lsof is probably a better tool to use for determining whether a range of ports is open for use. netstat can tell you also but is cumbersome to use as there's no way to specify a range of ports:

To find out if ports 40,000 - 40,050 are in use on a particular server:

# lsof -i@hostname:40000-40050

[Rasheed Tamton]

Hi boomer,

Anything in the "LISTEN" state are the opened ports on the netstat command output you used above.


from the OS side the file for the ports and servicesis /etc/services. Just look it and you can see how the ports and protocol/service are already defined there. To find open ports that are not listed in /etc/services then use the lsof command as Sandman told.


man services


If you have a firewall you have to open the ports from firewall side also.

[boomer_2]

Thanx sandman and rasheed ...i have installed lsof utility