How to open ports 119 and 443 in my Mac?

You have to open the ports on your router, not on your Mac. What kind of router do you have?

Austin

HI,

If the Mac Firewall is ON then you need to set up (allow) the app in question to use those ports.

In System Preferences > Security and Privacy > Firewall use the Options Button.

This needs to be set to "Allow Signed Software" If On and the app you are using to be added to the List.

There are 65535 internet ports in total.

The first 1024 of them tend to be open by default.

The port 443 is used by many login pages to various sites such as Apple's Login Page to post here and Bank sites.

It is also used by Messaging apps to sign in to some servers. AIM uses port 443 now. The Yahoo option in Messages also uses port 443.

Some Mail Servers also use it.

Port 119 is likely to be open in your router by default as it is below the 1024 threshold.

9:10 pm Sunday; May 4, 2014

I suspect it is that Comcast router. I had read so many posts on these forums about problems with the Comcast modem-router, that I insisted on a modem without a router as my current wireless router has always worked perfectly. I exchanged the modem-router model they provided for a modem without a router and it works perfectly with my Apple Extreme router. You might want to search the forums for problems with Comcast router and see if you can see any similarities to your issue.

I can't say for sure because I don't use a PC. But I saw enough threads on these and Comcast forums about problems with the Comcast modem-router that I wouldn't even try it. When I got the notice that my old modem was no longer supported, they sent me a new one which included the router. I didn't even try it, just exchanged it for a model without router. Try searching these forums for Comcast router problems and see if they seem to relate to your issue. Did you recently upgrade your Comcast equipment and did you have problems with a previous router? If you recently upgraded that equipment and the problem is new, I suspect the Comcast equipment.

I don't want to suggest that you change equipment unless we are sure that is the issue. Of course, you need the Comcast modem and you need a router. I use a simple Comcast Modem without a router with my Airport Extreme. But before you make changes, I would like to see if others weigh in to this thread. I also found numerous threads on the Comcast forums about this modem router combination. I am only suggesting that it may be your issue as I can't say for certain. You might check with Comcast support for suggestions.

I may be missing something, but bear with me :)

How are you using UseNext? Are you hoping that the Internet can see these ports on the Mac? Or are you just wanting the ports to work on the local network?

Does your Windows box already receive these ports from the Internet? If this is the case your router is forwarding these ports to the IP of the Windows box. There can only be one destination for this 'incoming port' on the local network.

I don't think a home/office router will let you receive on one port & split the traffic to multiple machines, at least not unless you have some decent firmware on the router.

If you are not accessing the Mac from the public Internet the router port forwarding is not the issue.

I do want to make it clear, that with no exact knowledge of your software or equipment, I only offered a suggestion for a possible solution. Obviously, it would help if people who know more about networks than I do would offer some advice. I would not want you to change out your equipment without investigating the issue completely. I am no expert and merely offered a possible avenue for investigation. Do let us know if you find a solution.

Humm,

I went to the site to see if it had anything but I got this warning from Web of Trust (WOT)

I did not really think it was ports as those should be open in most routers.

In the Finder > Go Menu > Go to Folder enter /etc/hosts in the dialogue box.

This should take you to Harddrive name/Private/etc/hosts.

Open the Hosts file with TextEdit.

The vanilla version of this should look like this

It can have other IP addresses and web servers listed to block the Mac from contacting them.

Adding a # to the front of the line will get it ignored.

Some apps can get put in here by the installation process.

7:58 pm Monday; May 5, 2014

Hi Drew,

It probably depends on the router as to the method used to open the ports.

As I have said elsewhere in the thread the first 1024 ports are open in most router to allow things to work Out of the Box such as Mail (110, 25, 567, 569, 995, 996 and many more ) and web Browsing (port 80 mostly but secure site can use 443) FTP (21 and 22) to name some.

Port Forwarding is one way to open some of the ports for One IP (computer).

Most routers have table for doing this and this can be limited as to the number of ports included.

This Linksys pic shows how to do it for some as it allows groups based on Start and end ports. However it restricts it to one IP

DMZ is a form of Extreme Port Forwarding that opens all 65535 ports to one IP (Computer)

In both the above cases other computers (IP addresses) are excluded from using the ports.

Port Triggering doe allow multiple computers to access the same Port but requires that you know the lead - Trigger - port involved for each app.

It is limited by the table size for your particular router.

Same Router in Trigger ports for iChat 3

Most router come with UPnP nowadays.

It is an ON/Off setting that allows the apps on the computer to say which ports are needed and when.

On some you can reduce the time to live and the Hop amounts.

The ports stay open from a period of normally 30 mins after non use.

This can be changed.

It also tends to list the number of Hops (the number of devices beyond the UPnP device) that it can be heard.

My Sky Hub

I have no other router on my network but I do sometimes use Internet Sharing between two computers hence the 2 Hops.

Every other device is only one Hop away from the the router.

There are concerns that the "Advertisement" is seen upstream (internet side) as well as device downstream.

The Concern is that this could be Up to your ISP and then down to the "next" IP end user on the particular router/server at the ISP end.

I have seen no evidence of this being the case.

Hope this helps.

8:45 pm Monday; May 5, 2014

I'm not sure where you are getting the info that routers have ports below 1024 open.

Are you talking about inbound traffic from the public internet? This is really not the case.

NAT is usually the reason that clients can get out on these ports, but inbound requests should fail.

Ports below 1024 are also called 'priveleged ports' - normal users cannot open services on these ports because of the system access that comes with them (admin username & password is required to start Apache on port 80 for example).

Try running shields up against your router see if all ports below 1024 are closed…

https://www.grc.com/x/ne.dll?bh0bkyd2

I think you are right about port triggering, but I haven't personaly used it & don't think it's a feature on most home/office routers?