Question about Cyberguard SG300 (00852503000366) Firewall

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Blocking email Cyberguard is blocking inbound email from mailguard

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The ISP provider changed our IP address when we reset the modem.(even though they swear it was a fixed IP) The mailguard delivery address is fixed so the redirected mail from mailgaurd no longer had a valid address for delivery.
You can fix this by correcting the mailguard delivery IP address (phone them in business hours) or by providing Mailguard with a name address instead of an IP address .

Simple but frustrating until you think of checking to see if the IP addresses of your server and mailguard match

Posted on Jun 19, 2008

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Posted on Jan 02, 2017

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My facbook site block by netgera so now what shoud i do


How to Disable the Netgear Router Firewall how-to-disable-the-netgear-router-firewall.gif To disable the Netgear Router Firewall, add a new rule that allows all access from the outside to the inside.
To do this, type the router's address (the default is either 192.168.0.1 or 192.168.1.1) in the Web browser
Enter the username and password in the prompt that appears. The default username is admin and the default password is password.
From the main menu, choose Security -> Rules
Add a new rule for Inbound Services with a service name of "ANY" and an action of "ALLOW always."
Then, move the new rule up until it is the first rule in the Inbound Services section.
Finally, make certain that this rule is enabled by checking the Enable column.
The Netgear Router firewall is now disabled and the internal network is now completely unprotected and open to attack from the Internet.

Sep 19, 2011 | Computers & Internet

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I need hellp!!!!!


Did you install a block for myspace?
If you did not then check with your upstream provider, they could be blocking myspace.
What happens with you trace route to myspace at what IP address does it fail? That is the hop just prior to the one blocking you .

Aug 31, 2009 | Nokia IP 350 Firewall

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

2 Answers

DFL-210, follow example to block web site


i have the same problem....try this
In order to enable port forwarding you need to create two rules on the DFL-210. The first rule is for service to Static Address Translation (SAT) and the second rule is for Network Address Translation (NAT) to Static Address Translation.
The first rule is created using the following steps:
  • Under Rules/IP Rules/wan_to_lan add a new rule
  • Under the general tabName = enter desired nameAction = SAT
    • Service = Select the desired service
    • Schedule = Select the desired schedule or None
    • Source interface = any
    • Source Network = all-nets (you specify a specific inbound address or range)
    • Destination Interface = core
    • Destination Network = wan_ip3. Under SAT tab
  • Under the SAT tab
    • check destination IP address
    • New IP Address = the address you want to forward to
    • New Port = the port you want to forward to
    • Create the rule by clicking OK.
The second rule is created using the following steps:
  • Under Rules/IP Rules/wan_to_lan add a new rule
  • Under the general tabName = enter desired nameAction = Allow
    • Service = Select the desired service
    • Schedule = Select the desired schedule or None
    • Source interface = any
    • Source Network = all-nets (you specify a specific inbound address or range)
    • Destination Interface = core
    • Destination Network = wan_ip
Create the rule by clicking OK.
Activate the configuration by using the Configuration/Save and Activate menu item.
posted.

Jan 06, 2009 | D-Link Netdefend DFL-210 (DFL210)...

2 Answers

Help with a unblock code


ok, on the internet window, click on tools, then internet options, then go to the ADVANCED tab, and click on the reset buttons and hopefully this fixes ur issue and if it does dont forget to rate me as FIX YA

Feb 12, 2008 | Cyberguard SG300 (00852503000366) Firewall

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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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Port 25


Which Firewall?

Model and make please

Oct 19, 2007 | Cyberguard SG300 (00852503000366) Firewall

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