1
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1answer
362 views

Port 25 blocked but Firewall is off [duplicate]

OK so this is driving me crazy. Running sendmail on CentOS. It's running, and listening on 25: [root@mysqlslavebackup ~]# nmap -sS -O -sV 127.0.0.1 Starting Nmap 4.11 ( ...
0
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1answer
123 views

Connection not being routed through VPN

Let's say I have a server at 12.34.56.78 that provides PPTP among other things. Right now I'm on a network that has most outbound ports blocked, and I'm using my VPN to break through the firewall. My ...
1
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7answers
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Firewall blocks traffic - how to find out what ports / ip addresses are used by software?

Well I get a "host was not accessible" error when trying to use a software. I don't know which port they use nor which address they are trying to reach. Is there a more or less easy way to figure that ...
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2answers
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Certain website is not accessible in my server

I cannot access a certain website in my Linux Server. # curl https://pgws.bpm.bankmellat.ir/pgwchannel/services/pgw?WSDL curl: (7) couldn't connect to host It's accessible from anywhere else but my ...
0
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1answer
1k views

How to detect from client which ports are being blocked?

The issue I have currently is with Windows (WindowsXP --> Windows 2003) but I would be interested also in how resolving it in a linux client. I work with a network split in several subnetworks and ...
0
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2answers
229 views

Finding out which outgoing port needs to be opened

I've got an application that used to work perfectly with all outgoing ports open and all incoming ports closed. Now we've closed all outgoing ports except a few specific ones e.g. http and it's not ...
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2answers
946 views

Cannot access SVN repository from another host within the LAN

I'm trying to connect to a repository I've set up on our server from another host on the same network, but the connection is failing. checkout command: svn checkout svn://192.168.11.192/ error: ...
43
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5answers
265k views

How to check if a port is blocked on Windows?

What is the easiest way to check if port 3306 on my localhost is being blocked?