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Old 03-29-2004, 01:42 AM   #1
x5452
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why port 23 not work at corporate LAN?


At home,
- can telnet using port 23
- can access https://ip-address:23

At corporate LAN,
- can telnet using port 23
- CANNOT access http://ip-address:23 (got 403 forbidden error)

WHY?
I suppose port 23 is open because i can telnet
but why https not work?

any helps would be greatly appreciated.
 
Old 03-29-2004, 01:47 AM   #2
SciYro
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could it be blocked by the firewall?, say iptables?
 
Old 03-29-2004, 02:06 AM   #3
x5452
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but i CAN do a telnet to the same ip address using port 23
but not https://ip-address:23

why network admin like to configure like this?? just wonder.
they are charging me for the that wtf...
 
Old 03-29-2004, 02:48 AM   #4
mikshaw
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telnet and http use different protocols. Port 23 is probably blocking UDP
 
Old 03-29-2004, 04:26 AM   #5
x5452
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oh ic.
so telnet use tcp
and http use udp?

because now i can use telnet thru port 23 but https
 
Old 03-29-2004, 08:52 AM   #6
trickykid
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http uses port 80. You can't have both http and telnet using port 23. And https uses port 443. Why would you want to access http to port 23 anyways, what are you trying to accomplish?
 
Old 03-29-2004, 10:12 AM   #7
x5452
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i try to access Plesk though port 23 (which i think this is the port NOT block)...
because the default port 8443 is blocked.
 
Old 03-29-2004, 10:14 AM   #8
x5452
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the wired thing is:
i can access Plesk admin thru 23 at home but not at office.

however, i can access telnet both at home and office thru 23. which make me think 23 is OPEN to all services....
 
Old 03-29-2004, 10:40 AM   #9
MS3FGX
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You can't have a port open to all the services, or more than one, for that matter.
 
Old 03-29-2004, 10:42 AM   #10
x5452
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I am thinking to subscribe http tunnel client software. may be a solution for me...
 
Old 03-29-2004, 10:44 AM   #11
x5452
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yes, that's why I configure my web server so that plesk to use 23 and telnet to use 24 (actually give up telnet temporarily, because at work 24 is block too)

i tested at home ok. can access Plesk thru port 23
but when at work, cannot...

anyway, thanks for any help tho
 
Old 03-30-2004, 09:53 AM   #12
jschiwal
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By the way, telnet uses udp. SSL uses port 22. Maybe that is what Plesk normally uses.
 
Old 03-30-2004, 08:46 PM   #13
x5452
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ahh ic.
thanks for your info, jschiwal
 
  


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