Tcp ports open?

Unanswered Question
Feb 13th, 2009
User Badges:

Hello, i've got two Catalyst 3950 connected on stack for the production network and another 3950 catalyst for the test network. There is a crossover cable from the Catalyst of test network to one of the production catalyst in order to give them conectivity.

Now, somebody wants to comunicate from a workstation on the test network to a server on the production network. I can perfectly ping, but this user tells me that he needs to conect using tcp ports 1433 and 5084.


Is there anyway i can test those ports from the switches?



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Giuseppe Larosa Fri, 02/13/2009 - 03:27
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

Hello Francisco,


you can test by using


telnet ip-address tcp-port-number



On IOS based switches


to see if you can access the service on the specified port


Hope to help

Giuseppe


SpeedLottery Fri, 02/13/2009 - 04:11
User Badges:

NetworkSwitch1#telnet 192.168.165.XX 5084

Trying 192.168.165.64, 5084 ... Open



NetworkSwitch1#telnet 192.168.165.xx 1433

Trying 192.168.165.64, 1433 ... Open


Hi, i got this answer from the switch, i gues that means the port is listening on the specific machine. That means tcp port is open i guess?

Giuseppe Larosa Fri, 02/13/2009 - 05:06
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

Hello Francisco,

yes if you see open you have a session with the server


with http server you can type

get


and you should see a reaction of the server


Hope to help

Giuseppe


ccannon88567 Fri, 02/13/2009 - 04:25
User Badges:

Never occured to me that you could run this command from IOS! Thanks Giuslar.

Actions

This Discussion