Question about Cyberguard SG300 (00852503000366) Firewall

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Port 25 how do you open port 25 on this firewall?

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Re: port 25

Which Firewall?

Model and make please

Posted on Oct 19, 2007

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How can I download purchased items on itunes (error 8003) from behind a Cisco RV220w firewall?

Configure the Cisco to "log everything", and then try the iTunes download. Then, examine the log-files, to see which connections were blocked. Then, configure the firewall to "allow" those TCP-ports.

Apr 23, 2014 | Cisco RV220W RV220W-A-K9-NA Wireless...

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How do i open a specific port on my soniwall tz210 firewall router?

Ports are communication channels for computers and networks.

Certain applications that run over or connect to the Internet require the use of certain ports.

Firewalls block the use of many ports because they can be like open doors, which viruses and hackers use to gain control of your computer.

However, if you have an application that needs to use a port that the firewall has blocked, you can go into firewall and open that port.

Following these instructions will allow you to open a port in the Windows Firewall and give you guidance for other firewalls.

Go to the control panel and click on "Windows Firewall."

If you are using another firewall application, open that application from the Programs menu.

If you are running Microsoft Firewall, you will have to work with both applications.

Verify the status of the firewall.

The first pane that comes up is the general tab and it should indicate whether the firewall is on or not. If the Firewall is not on, chose the "on" option and click "OK."

Open the Firewall application.

Go to the "Exceptions" tab and choose "Add Port."

Give the port opening a name.

Type in the port number you want to open, then choose either "TCP" or "UDP."

In most cases you will select TCP.

UDP is used for connectionless networking that doesn't require an initial connection to send information.

Or right click on the "Network Internet Access" in the bottom task bar select open network and sharing then select see full map you will see all available connections

Hope this helps

Oct 03, 2012 | SonicWALL TZ 210 (01SSC8786) Firewall

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Problem in Sonic FireWall

Check with your ISP for whether they have blocked Port POP3 Port 25 or not. also allow (Open) this port in Sonic Firewall also.

POP3 Default Port 25 but many provider use different Ports so also make sure that you configured correct port.

Feb 26, 2010 | SonicWALL TZ 210 WLS-N TOTAL-SECURE NTWK...

1 Answer

Open Port Sonicwall

1. If the port is to be opened for internal people to access the port outside the network, add a firewall allow policy in Firewall -> Access Rules -> LAN->WAN

2. If the port is to be opened for external people to access the port in the network, add a firewall allow policy in Firewall -> Access Rules -> WAN->LAN

Jul 13, 2009 | Sonicwall PRO 3060 NFR (01-ssc-5378)...

1 Answer

Firewall is blocking incoming emails

Do you have an email server in place? If so, you need to setup port 25 for inbound access to the IP address of the email server. I would suggest that you don't allow all as that will open up everything and kind of negates the reason to have a firewall. Some ISPs block port 25 though and use port 587.

If you don't have an email server then the problem might be with your email client configuration.

Apr 01, 2009 | D-Link NetDefend DFL-700 Firewall

1 Answer


You may just have to open port 25 on your Nokia firewall with a Rule... and make sure that you allow port 25 only from your server IP address.

Feb 13, 2009 | Nokia Network Security & Firewall Devices

2 Answers

Problem in proxy settings

Log Out...Could not Connect...
Dear User, If you are behind a firewall or within a company local area network (LAN), you will need to open outgoing TCP connections to Port 51215 on your proxy server.

Oct 27, 2008 | Network Security & Firewall Devices

2 Answers


Hello there, you only need to open a port for utorrent, if you use a Router device for sharing your internet connection to more than 1 computer. If you do indeed own a router then you will need to log-in to it, via your web browser and change the necessary settings to forward the port that utorrent uses, to your local computers address.

Please write again if you need more support.

Hope this helps.

Apr 06, 2008 | Symantec (10427438) Firewall

1 Answer

Cyberguard SG300

From the main configuration screen select Network Setup, and then click on the Connections Tab. In the tabline below that click on Aliases.

At this point you input the Alias IP address and the netmask and add it, selecting port 25. The firewall now knows that it is to forward all traffic on port 25 to the computer that has the IP address you put in.

You should be aware that doing the above opens a direct access point into your network! Port 25 is the port used for SMTP (Sendmail) and it is the most vulnerable and most hacked service on the Internet! You should seriously consider not doing this.

A better option would be to goto the DMZ tab and configure a DMZ net on your firewall - you will need to obtain a second routable IP address from your ISP to do this though. By creating the DMZ and then routing port 25 to a machine inside the DMZ you isolate the machine running SMTP from all of the other machines inside your protected network and so make a compromise much less likely.

All of the systems inside your protected network will still have demand access to the machine in our DMZ, but the machine in your DMZ would be unable to initialize access to the protected network, which is a much safer setup.

Oct 19, 2007 | Cyberguard SG300 (00852503000366) Firewall

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