[BC] IP Weirdness

[Dana Puopolo]

Here is a list of port assignments (only ports through 1080 are normally
reserved, though ports 5060-5070 are de facto reserved for SIP signalling
(VOIP). Port 25 is usually blocked by home ISPs.

-D


Port #  Description 
1  TCP Port Service Multiplexer (TCPMUX) 

5  Remote Job Entry (RJE) 
7  ECHO 
18  Message Send Protocol (MSP) 
20  FTP - Data 
21  FTP - Control 
22  SSH Remote Login Protocol 
23  Telnet 
25  Simple Mail Transfer Protocol (SMTP) 
29  MSG ICP 
37  Time 
42  Host Name Server (Nameserv) 
43  WhoIs 
49  Login Host Protocol (Login) 
53  Domain Name System (DNS) 
69  Trivial File Transfer Protocol (TFTP) 
70  Gopher Services 
79  Finger 
80  HTTP 
103  X.400 Standard 
108  SNA Gateway Access Server 
109  POP2 
110  POP3 
115  Simple File Transfer Protocol (SFTP) 
118  SQL Services 
119  Newsgroup (NNTP) 
137  NetBIOS Name Service 
139  NetBIOS Datagram Service 
143  Interim Mail Access Protocol (IMAP) 
150  NetBIOS Session Service 
156  SQL Server 
161  SNMP 
179  Border Gateway Protocol (BGP) 
190  Gateway Access Control Protocol (GACP) 
194  Internet Relay Chat (IRC) 
197  Directory Location Service (DLS) 
389  Lightweight Directory Access Protocol (LDAP) 
396  Novell Netware over IP 
443  HTTPS 
444  Simple Network Paging Protocol (SNPP) 
445  Microsoft-DS 
458  Apple QuickTime 
546  DHCP Client 
547  DHCP Server 
563  SNEWS 
569  MSN 
1080 Socks 



------ Original Message ------
Received: Tue, 27 May 2008 07:08:52 PM EDT
From: "Jason R." <jyrussell at academicplanet.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Subject: Re: [BC] IP Weirdness

Ok, thanks!  But... I have a fixed address.  I'm on cable with a fixed IP. 
The server is at 63.246.63.141, My address (which I didn't post) is fixed, 
the router is fixed, the machines I'm hitting are all fixed... I had a
There are no other machines on this intranet.
So why did corporate install a service? I guess just incase I ever had to 
move it over to the slower service...

   I know that it shows up in their config pages as a cutey little smiley 
face, and, gets a new name (as far as they are concerned it's 
greenville.skimmer at whatever...)

   I know they didn't like me using offbeat ports, etc.
They moved everything over to port 80, but, when you look at the stuff NoIP 
is doing, 123 shows up as well.
Hm.   I could use some more education on this... if you've got the time...
Jason R.
----- Original Message ----- 
From: "Dana Puopolo" <dpuopolo at usa.net>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Monday, May 26, 2008 1:06 PM
Subject: Re: [BC] IP Weirdness


NoiP HAS to phone home all the time! That's how it works...let me explain.

You have a dynamic IP address, but you want to host web pages or whatever 
else
that normally requires a static IP address. So, you sign up with a service
like NoiP or DynDNS and let them do your DNS lookup/redirection. They put a
small program on one of your LAN computers that constantly pings the
mothership with your current public IP address (which it can also look up, 
as
can you at www.whatsmyipaddress.com). It HAS to work this way to get through
any firewalls. As long as your public IP address stays the same, nothing
happens-BUT when your ISP does change your address (and being dynamic, it 
will
change!), The mothership is notified of the change and makes the necessary
changes to your DNS entry. That way when someone types in www.jason.com, 
NoiP
already KNOWS the new IP address and redirects the query there.

-D