What incoming public TCP ports are blocked?

I just setup my 890L to forward incoming public TCP ports to to a couple of my LAN devices. Unfortunately, it looks like VZB is purposefully blocking common incoming TCP ports.
I tried searching on google.com for what ports are blocked; but, just found a bunch of posts like this one. Some people actually tried contacting 1st and 2nd tied VZB tech support about this; but, it's clear they don't have this information available to them.
Has anyone verified what incoming public TCP ports are not blocked? There's no easy way for me to test this using my 890L.

You can find out for yourself which ports are being blocked by using a Port Query utility. Depending on the OS of your computer there should be multiple utilties available for free floating around.
As we have seen numerous times before, devices on VZW's new SIM card/4G LTE network are blocked from many of the public facing services and features we have previously been dependant on. Public IP Addresses, Public Ports, Webcams, VOIP phones, etc. all suffer under the same umbrella of limitations on the new network. The list is too long to publish everything that is blocked or not working as it previously did. Much easier for you to post the requirements of your application and have us confirm if its working or not.
If you have not already experimented with VPN's I'd suggest checking them out. VPN's are one of the easiest ways around these new limitations. With a VPN enabled your device will tunnel all of its communications out an allowed port to a VPN server where your traffic is free to act normally before returning to you.

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What TCP ports are used by Push notifications

I believe my Firewall is blocking Push Notifications on my iPod touch. So, I wanted to discover what the TCP Ports are that are used by Push so I could open those ports to pass packets (info) to my iPod.

See:
http://support.apple.com/kb/HT3576
"If you are still unable to receive notifications and you are using a Wi-Fi connection, verify that the network or firewall is not blocking access to port 5223."

What ports are blocked with Homefusion

I am trying to figure out what ports are blocked on the homefusion service.

There is no official list of blocked ports for HomeFusion or any of the other VZW products. All products are treated the same way. The NAT firewall on VZWs new LTE network is responsible for blocking internet communication as well as hiding public IP Addresses. No manual configuration of the devices themselves will allow you to work around the issue. In truth it would be easier to create a list of the allowed ports but we don't have one of those either.
A rule of thumb is that you should assume any custom or unusual ports are blocked. Even the less popular mainstream ports are blocked some times. Only the major mainstream public ports are normally available. You have to test out your applications to know for sure if they work. If you have a laptop then stop by a VZW store and use one of their devices to test if it works before you buy.
Also, anything depending on Public IP Addresses is broken on the new LTE network. Some common examples are VOIP phones, Xbox hosting, IP security cameras, etc. If you need remote access to your local network then forget about it.
The work around to blocked ports and Public IPs are as follows:
1. Setup a VPN to connect to a network where the ports are open
2. Purchase a static IP Address from VZW for $500.00
3. Use a different ISP
VZW does not make exceptions for port blocking. You have to work around them or get by without them.

What TCP ports are used in Dataguard

Hi Team,
what TCP ports are used in Dataguard, Dblink or SQL statement
Thanks
Aj

hello,
i am a Jr. DBA, but from what i can think its the same port as the listner would. 1521 or it would be the same at ur entry in TNS entry in tnsnames.ora

How do i find out what tcp ports are open? and where do i look it up?

how do i find out what tcp ports are open? and where would i go to see them? i have a program that is asking for it and i am unable to find where those are listed.

If you are not too tech savvy, try using the Network Utility found in the Utilities folder. Just have the Mac scan itself.
If tech savvy, there's always Fyodor's classic NMap, found at www.insecure.org.

What Ports Are Blocked using my Wireless Card

Can someone tell what ports are beeing Blocked by Verizonwireless when using my Wireless Card? Also, how do I get one open for example port 4444?

i don't think that the url blocking should block any ports ... however , if its doing this .. you may need to upgrade / reflash the router's firmware .. after the upgrade , reset and reconfigure the router ..

What happens when calls/txts are blocked for a number?

I figured out how to block incoming calls/txts from a phone number in spam controls. What happens if they try to call or text? Are they aware that the number is blocked or does it seem "normal" except I don't receive anything?

Blocked individuals who call a customer will hear the message:
"Welcome to Verizon Wireless. The number you were trying to reach has calling restrictions which has prevented the completion of your call."
If someone tries to text you from a number you have blocked they will get an error that the text failed to send. You will not receive any notification that a blocked number attempted to text you.
Taken from MorganB HERE and HERE

Using Mail.app on WiFi networks where all but port 80 are blocked

I use my iPad at my residence where WiFi is comes via my Airport Extreme. I have no problems sending mail from home with my iOS 5 device using iCloud. However, when I find myself at a public library, conference facility, hotel, motel, etc. where there is WiFi, I usually find that I cannot send email. These networks typically block all but the ports that websites use (80, 8080 and so on). This means that the ports typically used by SMTP (25) are blocked and, thus, do not work. Going to iCloud.com with mobile Safari does not enable the use of web mail as it would on a laptop.
So, I can't use iCloud web mail and I typically can't use Apple Mail on the iPad because SMTP ports are blocked. What's a person in this situation to do?

Hello Ivan.
The Mac OS X 10.4.7 Update introduced connection issues as a result of (according to the documentation) "Mail now supports connecting to mail servers through a SOCKS proxy". If that's the problem, you must go to System Preferences > Network and disable the SOCKS Proxy in the network configuration used to connect to the Internet, if it's enabled.
You should also go to System Preferences > Network > Show: Network Port Configurations, and make sure that the configuration used to connect to Internet appears at the top of the list.

TCP port blocked

I am getting an "...unable to connect to server due to network security (TCP port 8080 blocked)" message. Any idea what settings should I change before going to SFR support? BES not enabled.

This will have been a false alarm triggered during the 7.7 upgrade. The warning occurs when a site fires an event but does not have a current heartbeat connection. I suspect this was caused by bad sequencing of a service restart and we will look into how that hapened. The upgrade started yesterday at 9am and was completed at noon US-CST.
Logs show a large number of these events were triggered between 9:30am and 10:20am CST. If you are still receiving these, please let us know so we can investigate further.
Andy

Unknown open TCP ports on router

Anyone know how to close these open ports on my Cisco 7606 router?
Anyone know what these TCP ports are used for?
49   - Not sure what this one is other than what IANA reports about TCP port 49
4510
4509
2222
I'm sure I could add an ACL to block communications to my router based on this ports but would rather figure out how to close 'em so this already overloaded router doesn't have additional processing.
Cisco-7606# sh tcp br all
TCB       Local Address           Foreign Address           (state)
12EFC1C0 172.16.8.3.14401        10.8.2.14.49              TIMEWAIT
1CC4F57C 172.16.8.3.26963        10.8.2.14.49              TIMEWAIT
1A419F90 0.0.0.0.4510            *.*                       LISTEN
1C581740 0.0.0.0.4509            *.*                       LISTEN
1A417BBC 0.0.0.0.2222            *.*                       LISTEN
12FB03A8 10.8.10.2.2222          10.8.1.42.4690            CLOSEWAIT
12FB099C 10.8.10.2.2222          10.8.1.42.2233            CLOSEWAIT
12FA7DF0 10.10.0.3.2222          10.8.1.15.4878            CLOSEWAIT
1CD47780 10.10.0.3.2222          10.8.1.15.3917            CLOSEWAIT
1CDDBCE0 10.8.10.2.2222          10.8.1.42.3964            CLOSEWAIT
Cisco-7606# sh ver | i image
System image file is "disk0:c7600rsp72043-advipservicesk9-mz.122-33.SRD3.bin"
Tks
Frank

Frank
I can offer some suggestion about one of your port numbers. TCP port 49 is used for TACACS. If you are using TACACS for authentication, or authorization, or accounting then we know why port 49 is open and blocking TCP49 will prevent TACACS from working with your router.
I have no insights or suggestions about the other port numbers that you mention.
HTH
Rick

Technical Question regarding TCP Ports

Morning All
The Set up - 1xXP PC running BTNP and 1xWin7 Laptop running MSE
1xBTHHV2.0B
1xBTVision box (currently not connected)
I have posted elsewhere on here about strange results regarding attempts (via UDP ports) to connect to my PC and have been trying to stop this or even look into who, what and why. At this present time BTNP has been manually configured to report everything and I'm getting some interesting attempts. Anyway googling this, that and the other has sent me in the direction of TCP Ports.
Upon opening "netstat" via a command prompt on the PC it shows that 4 TCP Ports are currently "established" and 1 is showing "close_wait". All these refer to the localhost:**** which I guess is okay?
However, opening "netstat" on the Laptop shows 8 TCP Ports are currently "TIME_WAIT" (in the state section) and 1 refering to which IP the laptop is assigned with and the www IP address. It's the 8 I'm slightly concerned about. They refer to what I believe is the BT Vision server IP address (127.0.0.1). The same address is found on the BTV box.
Apparently, to block TCP connections the user needs to manually configure the router firewall which AFAIK can't be done on the BTHH2.0B.
So here's the Q's
1) Is it normal to have a computer TCP connection with what appears to be BT Vision?
2) If not how do I block/close the TCP ports without using a router firewall that appear to be BT Vision?
3) Why would the BTV IP address be dispalyed if the box has not been connected for some time?
None technical replies would be good
-+-No longer a forum member-+-

@ Roger.
Wow what a read!
Am I correct to assume that UDP transmissions are safe as they don't go anywhere as the firewall stops them? I'm still intrigued as to why various transmissions are attempted (ie. microconnect, BTVision, Binary Trojan maker etc etc etc).
Currently re reading yet again and will post regarding TCP...........
.............TCP has to make a connection? A packet is sent from A to B and back to A. It is then that data can be exchanged. A and B's serial numbers can also be exchanged. Then when they have a full 'duplex' connection, A and B can send data to the each other anytime they want. And all A has to do is just give the operating system some stuff to send?
That worries me or am I reading into this the wrong way?
-+-No longer a forum member-+-

UDP and TCP ports

Hi:
I have a question. As we know, scanning TCP ports is a lot eaiser than UDP ports because active UDP ports don't respond and there are other reasons as well.
try{
Socket soc= new Scoket(address, portnumber);
catch(Throwable e){ System.out.println(e)}
look at the code above, it can only tell you active TCP ports for the Throwable e tells you nothing about UDP ports. An active UDP port doesn' respond to the connection call "soc". Therefore it will throw an exception(connection refused) after trying to connect an active UDP port. This exception is just like those of closed TCP ports.
What i am saying is that active UDP ports will be treated the same as closed TCP ports. They are hidden in closed TCP ports. How do i sift them out? Any solutions?

I am basically trying to determine how many UDP and TCP ports on a machine are open. Open TCP ports are easy to see. But UDP ports are tricky. Can you please tell me more in detail using a datagram socket?

SMTP Port 25 blocked to my own relay server?

Hi all,
I am a noob to this forum. So dont smake me to hard.
I have the Verizon Wireless/router/modem I was looking around in there to allow me to use my hp scanner to connect to a smtp server across the wan. The firewall on the other side is allowing my traffic in so I should be able to hit the relay server (NOT VERIZON'S) but I have my own in a remote location but I cannot get it to work communicate on port 25.
If I open port 27 ESMTP on the destination and change the smtp server to use it then I can telnet ipaddress 27 and I would get the HELO response but not the case with port 25. Of course you maybe thinking "Why dont you set your scanner for 27"? Well I wish I could or I would not be in this forum
Its an HP 4100MFP scanner and there is an option of "SMTP" i enter the SMTP gateway address and thats it no other option.
So I will assume its blocked even though I want to hit my own smtp relay server ip ? I suppose my only other option is to put a firewall in and just vpn to the destination and be done with it. Anyhow I wanted to ask the group in this forum.
I have seen a few things on SMTP before I posted but not exactly what I wanted, it seems folks want access to smtp period but I just want access to my own SMTP server in a remote location.. So is it possible on port 25 or am I over looking something in my verizon mia424wr.
I assure you its NOT the destination.
thanks for reading.

What about Port 80 - is it blocked?
What ports are blocked using Verizon FiOS?
No ports are blocked on business accounts with static IP addresses.
or port 80 info, see: »Verizon Online FiOS FAQ »What about Port 80 - is it blocked?
Outbound port 25 has been blocked on and off in the past, most recently blocked again effective 6/1/10. Inbound port 25 is currently open. Even if port 25 is not blocked, Verizon's dynamic IP addresses are listed in both the Spamhaus Policy Block List (PBL) and MAPS DUL. The PBL is/can be used by mail exchange servers (MX's) to reject connections from these addresses. Thus, for the purpose of running a mail exchange server port 25 is effectively blocked. However, a mail server can be run that utilizes Verizon's authenticated SMTP just like your mail client would do.
As always, YMMV. It has been reported that sometimes a port which should be blocked by standard Verizon policy has instead been left open. Which ports are blocked may change in the future.

Looking for local VRU-PIM TCP port

Hi Team,
I am setting a VRU-PG to connect an external IVR, however I couldn't find anywhere what is the TCP port number used by the vrupim.exe process to open our firewall port accordingly.
Is the VRU port dynamic ? "The port Port Utilization Guide for Cisco Unified Intelligent Contact ManagementEnterprise & Hosted Release 8.0" document mentions that for GED-125 the server Protocol/Port is TCP 5000–5001.
However in my case the local TCP port of vrupim.exe keeps changing. Whenever I cycle the PG it is changed to 1102, or 3352, 3407, 3443 etc..
Thanks & Regards
Nick
Note:

Hi Sentil,
Thank you for your answer. The "VRUTcpServiceName" setting is indeed set to 3000. This is my remote port for my the
VRUIpHostName 10.173.33.143. However this is not what I am looking for.
I am looking for the local port range which is used by the the VRUPIM.EXE process which is at the moment 2481 (see belloww). This is because the is a firewall on the remote site, where the VRU server is located, and they need to know which are the ports to open.
C:\icm\pft\PG1A>netstat -bn
Active Connections
Proto Local Address          Foreign Address        State           PID
TCP    10.157.124.37:1802     10.157.124.33:40002    ESTABLISHED     4964
[pgagent.exe]
TCP    10.157.124.37:1803     10.157.124.50:40017    ESTABLISHED     4964
[pgagent.exe]
TCP    10.157.124.37:1804     10.157.125.50:41003    ESTABLISHED     4964
[pgagent.exe]
TCP    10.157.124.37:1805     10.157.125.50:41017    ESTABLISHED     4964
[pgagent.exe]
TCP    10.157.124.37:1806     10.157.125.33:41002    ESTABLISHED     4964
[pgagent.exe]
TCP    10.157.124.37:1807     10.157.124.50:40003    ESTABLISHED     4964
[pgagent.exe]
TCP    10.157.124.37:2481     10.173.33.143:3000     ESTABLISHED     4560
[vrupim.exe]
TCP    10.157.124.37:3389     10.159.29.60:52247     ESTABLISHED     3340
TermService
[svchost.exe]
TCP    127.0.0.1:1069         127.0.0.1:7161         ESTABLISHED     3388
[msnsaagt.exe]
TCP    127.0.0.1:1076         127.0.0.1:7161         ESTABLISHED     3420
[cccaAgent.exe]
TCP    127.0.0.1:1077         127.0.0.1:7161         ESTABLISHED     3396
[hostagt.exe]
TCP    127.0.0.1:1138         127.0.0.1:7161         ESTABLISHED     3408
[sappagt.exe]
TCP    127.0.0.1:7161         127.0.0.1:1069         ESTABLISHED     3380
[snmpdm.exe]
TCP    127.0.0.1:7161         127.0.0.1:1077         ESTABLISHED     3380
[snmpdm.exe]
TCP    127.0.0.1:7161         127.0.0.1:1076         ESTABLISHED     3380
[snmpdm.exe]
TCP    127.0.0.1:7161         127.0.0.1:1138         ESTABLISHED     3380
[snmpdm.exe]
TCP    10.157.124.37:1062     10.157.124.42:389      CLOSE_WAIT      3048
[DiagFwSvc.exe]
C:\icm\pft\PG1A>
Regards
Nick

Listing and closing open TCP ports

Hi,
For security reasons I would like to have as few open TCP ports as possible on my iMac, leaving open only those that I feel are worthwhile having enabled. How can I go about to
a) identify which TCP ports are currently open on the system
b) identify the processes that have opened the ports and understand the origin and purpose of those process
c) disable the processes that have ports open, if I feel that there is no good reason for having them open
I'm running OS X 10.9.4.
Thanks!
Fredrik

You can run "netstat" in the Terminal or maybe Network Utility to see open ports. However, all you should really do is make sure you don't have any sharing services enabled. Otherwise that is all you can do. Macs are not meant to be used as servers or in secure environments. They are strictly consumer machines. Apple has engineered them to be highly secure, but not configurable by the user. It is highly unlikely that any modifications that an end-user can make would do anything other than reduce security.

What incoming public TCP ports are blocked?

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