Port is a generic term that can refer to port number (software related term), and computer hardware port. Here, questions referencing this tag refer to port numbers.

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1answer
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Port forwarding between 2 routers and wrong IP at the end

So here is the situation: I have adsl modem connected to 1st router "A" - local IP 192.168.2.1 I forward SSH port to 2nd router "B" - IP 192.168.1.1 On router "B" I forward SSH port to machine - ...
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0answers
17 views

Red 5 on Win 7 64 loading external but not local [on hold]

Ok, so when I run an install of any red5 exe... lets say 1.o.1...and I input (10.0.0.2) as the ip on the prompt and 5080 as port... local I can see my home screen... but cannot access /install /demo ...
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2answers
23 views

How can I set Postfix outgoing port to 465, but keep incoming port to default?

My ISP blocks port 25. So, I cannot connect to my server and send emails. I've tried changing it to 465. And it works! However, after this change, I cannot receive emails anymore. # # Postfix master ...
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0answers
26 views

Opening port 8080 on Windows firewall [migrated]

I am not sure if I am just missing a trick here and it will be something rather simple, or if I am trying to do something that just isn't going to work.. Anyway, I have an asp.net site and I am using ...
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0answers
15 views

SQL2008R2Express - Remote Connection Issue - Custom TCP Port [closed]

Detail about my systems SQL Server 2008 R2 Express Windows 7 Ultimate Details of My Problem Im trying to establish a remote connection for my sql server but seem to be not working for my custom ...
0
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1answer
28 views

Should I block the other SMTP ports as well to block outgoing mail?

I have blocked outgoing port 25 to prevent spam being sent from my servers. However, I'm not very familiar with SMTP and I have heard that ports such as 465 and 587 can also be used to send mail, but ...
0
votes
1answer
29 views

Apache - Restrict access to a specific port

I need to restrict access to a specific port only, on my apache server (I'd like that only the SSL port (443) is used on my webserver). So for example, if an user try to connect to standard port 80, ...
-5
votes
1answer
30 views

Forward downloads to a seperate physical connection [closed]

So, mothers internet connection is incredibly slow, and she lives in a very rural area and cannot have anyway of acquiring a faster connection. I on the other hand have a very fast connection, would ...
2
votes
3answers
160 views

Cannot log in into a server by ssh connection

was connected to a server via ssh through port 22, and decided to kill all the users connected with the root user with the following command: pkill -9 -u root Now when I try to log in by ...
0
votes
1answer
24 views

Postgresql not listening on the correct port using service command

In my /var/lib/pgsql9/data/postgresql.conf I added port = 55434 and if I start Postgres with /usr/bin/pg_ctl start -D /var/lib/pgsql9/data/ as the postgres user then Postgres is listening to the right ...
0
votes
1answer
50 views

Nginx multiple virtual host isn't working

I already have a Working nginx installation for my local development in my Computer. So i was thinking about adding another virtual host for a new project. Here is the Existing Virtual host file AKA ...
1
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1answer
41 views

Access servers individually in a load balanced set

I have 2 web servers in a load balanced set (port 80) on the Azure platform. I need to ping a php file on each server which forces them to update, but how can I do this? Can I access them like this: ...
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2answers
19 views

Http Persistent Connection (keep-alive) and port numbers

Is a persistent http connection (keep-alive), always bound to a specific port, or can it use a range of ports?
-2
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1answer
39 views

Random port in Filtered state for brief amount of time found using nmap , possible trojan?

Nmap results show me port 3527 open for brief period of time and then it disappears. I have a feeling this could be trojan communicating with mothership. Or something normal, but I cannot find much ...
2
votes
2answers
39 views

How can I get a list of the ports that Wireshark knows?

When I need to choose a new port to use (internal to an organisation) I used to look in /etc/services. This is no longer sufficient, as Wireshark knows about many other ports that are not in ...
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3answers
79 views

Despite of several attempts, unable to open port 25

This question may have been asked many times here but after several failed attempts, I repeat the history: How do I open port 25 port on my server running CentOS. Here is my iptables config: Chain ...
5
votes
6answers
356 views

How can I find the total number of TCP connections for a given port and period of time by IP?

On a Linux system there are plenty of methods for listing the current TCP connections for a given port by connecting IP but: how can I count the total number of connections to a port per source IP for ...
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0answers
22 views

Can't connect to Rails app after restarting Thin server

I have a rails app which works fine on localhost and used to work fine on my vps but after restarting the Thin server I got the same message on all browsers that they couldn't connect to the server. ...
0
votes
1answer
16 views

Is there a device with multi auxiliary (AUX) ports to configure multiple devices

Level: Beginner Sorry for the confusing title. I shall try to explain my best to explain my question. Question: Is there a networking device named X that has multiple AUX ports so that I can connect ...
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2answers
20 views

How to bind munin to use a vhost or port number?

Currently I'am able to access my munin setup using the default url. www.mydomain.com/munin For security reasons, I want to only allow Munin to be access using port number. Like this ...
-6
votes
1answer
49 views

Change original port number [closed]

The default port number for ssh is 22 is there a way to implement security by being obscure and changing the original number? So for example ssh would not be on port 22 it would be on lets say 2847.
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3answers
25 views

Manage multiple ports with Apache Tomcat

I already switched my default port from 8080 to 80, but here's a problem: I need to also be able to manage port 8000, too. Current ports are: 8080, 80. How do I map a new port (8000) to a new webapp? ...
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2answers
86 views

Changed SSH default port and disabled root login. Client didn't save the new port can't login/connect to it now

Working on my centos server. Connecting via putty. Changed SSH default port and disabled root login. But the client didn't save the new port and defaulted back to 22 (my new one was 42650 or something ...
0
votes
1answer
66 views

Exchange: use Port 110 for both POP3 & POP3/SSL?

On our Exchange 2010 POP3 is configured to only allow secure logon (TLS connection for authentification). Now, the default port for "plain" POP3 is 110, and for POP3 with SSL is 995, hence with the ...
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2answers
77 views

Running a websocket server and a http server on the same server

I am using nginx to to serve an instance of PHP application, and also at the same time running a Ratchet app to listen to a websocket connection. Problem is, both of these instance are using the same ...
6
votes
1answer
70 views

Should I listen for SMTP on both 25 and 587?

I was setting up haraka as our mailing server, and for outbound email, it suggests moving to port 587 for SMTPS auth support. However, I'm unsure if I should be running 2 instances of haraka on ...
0
votes
1answer
90 views

CentOS postfix smtp server connection refused from outside

I am quite stuck with my postfix/smtp configuration on my CentOS machine. I setup a mail dns mail.domain.tld, configured in the postfix main.conf file and tested locally on the server by connecting ...
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0answers
28 views

Occasional firewall spikes on ports in 40000 - 60000 range over VPN

I am hoping someone will recognise the description below and be able to tell me what they think might be going on.. I look after an office network, which has VPN access to a different network ...
0
votes
1answer
41 views

Adding port 25 to iptables won't getting to open centOS

I am facing a problem to open port 25 with iptables on my CentOS machine. I checked the connection by 'nmap' and 'telnet' but both failed. The follow things I did to trying make this work: iptables ...
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0answers
31 views

nginx loadbalancer is redirecting to the wrong port

I am trying to get the nxinx load balancer to work. I have the following configuration: upstream backend { server app-1.example.com:8001 max_fails=3 fail_timeout=60s; server ...
0
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1answer
50 views

Cant open port on Windows 2012R2

I really never had problem with Windows Firewall, however today on new installation i`m trying to open port 110 but i cant. My firewall rule is: printscreen telnet myip 110 Connecting To ...
0
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1answer
202 views

iptables for Windows to redirect traffic

I am currently testing my server traffic and would like to route all incoming+outgoing traffic so as to be picked up by Burpsuite for analysis. Ideally, all traffic from ports 80 and 443 should be ...
0
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1answer
152 views

Apache : How to redirect domain.com:2368 to domain.com/blog

I have standard Apache configuration. At domain.com Apache is serving static html files (No backend technology) At domain.com:2368, there is a Ghost (blogging platform) instance, running NodeJS. I ...
3
votes
1answer
99 views

nginx: no permission to bind port 8090 but it binds to 80 and 8080

I'm struggling with some strange permission related behavior: when I configure nginx to listen to port 8080 everything works as expected, but when I use any other port I get something like 2014/01/10 ...
0
votes
1answer
170 views

Windows - Command for adding new printer port type using inf files

Is there any batch or powershell command to add new printer port type using inf files. I am able to see only below commands for adding TCP-IP and LPR ports and not port type. rundll32 - Install ...
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2answers
148 views

Opened some ports with iptables but they aren't open

I'm running a Debian 7 server via Linode VPS, and have recently installed/configured a mail server using Postfix and Dovecot. The final step to complete this was to open up ports 993, 995, 465, and ...
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3answers
50 views

Can I set up port forwarding to emulate not just a port but another IP address?

I am running a proprietary Windows application which functions like a server. You install the program, and then it broadcasts itself over port 13083. The program is web-based, so it's accessed ...
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4answers
95 views

Apache2 VirtualHost IfPort?

I'd like to make a virtual host like this: <VirtualHost *:80 *:443> <IfPort 443> SSLEngine On ... </IfPort> ... </VirtualHost> So, if the host ...
0
votes
1answer
81 views

How can I prevent my Windows server from conducting port scans

I have several EC2 Windows servers on Amazon's AWS. I have been receiving messages from Amazon that my servers are conducting port scans on remote hosts on the internet. I have scanned the machines ...
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0answers
19 views

Trying to run the same port on two different IP's [duplicate]

I'm trying to get the port 25565 to bind to two completely different IP's which my host provided me with. These two IP's are run on Java virtual machines, and although they are running on two ...
1
vote
1answer
112 views

VCenter 5.0 Server shows error on Hardware Status for hosts (port 8443) [duplicate]

I have the following: vCenter 5.0.0 build 755629 The problem: In the plug-in manager: vCenter Hardware Status VMware, Inc. 5.0 Disabled Displays the hardware status of hosts (CIM monitoring) ...
2
votes
1answer
136 views

Can't establish connection on port 80 for yum

Hi guys I have a very strange issue happening on one of my boxes. If someone can advise what I can check please let me know. Thanks. Here's the layout. Box 1 & Box 2 <> Firewall <> ...
0
votes
1answer
41 views

A way to only allow some ports on windows server

I have been trying to make this work the last few hours but haven't come far. I have a windows server 2008 and a set up Local Security Policy firewall yet "no" inbound rules (yet). My domains look ...
0
votes
1answer
55 views

OpenVPN client opens a random UDP port?

We are noticing this on a number of our openvpn clients: [root@box ~]# netstat -tulpn | grep openvpn udp 0 0 0.0.0.0:53950 0.0.0.0:* ...
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vote
2answers
300 views

check port open without telnet [closed]

What do people use when Telnet is not installed to check a port is open and reachable? E.g. I used to use the technique of telnet <destination> and know it was there, even if telnet could not ...
2
votes
2answers
86 views

Explain how to bind a service to a ip and port [closed]

Yesterday I had a discussion about running the same service, for example SMTP, on the same port on a server. I think this is possible by assigning multiple ip addresses to the server and bind the ...
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votes
0answers
54 views

iptables only partially redirecting ports

I am moving over everything that uses port 80 to port 9000 on my server, so I configured my apache + it's virtual hosts to listen to 9000 using ip xx.xx.xx.106, and I set up my iptables to preroute ...
0
votes
1answer
25 views

Centos6 Alternate Apache/Virtual Host Config Alternate Port

I have an Apache2 + Virtual Host config that runs perfectly fine on port 80, but I'm trying to get the same setup to run on port 9000 instead. I went into my httpd.conf and changed the Listen line to ...
0
votes
0answers
116 views

Using iptables to log traffic from port mirroring

I configured one port of my switch to do port mirroring of the other ports. I connected to this port mirroring a server where iptables has some rules. If some rules are matched, iptables sends to the ...
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2answers
466 views

CentOS 6 and PostgreSQL - Can't Connect to Port

SOLUTION: it turns out the ORDER of iptables matters. The firth INPUT rule is REJECT all ... which precludes the ACCEPT rule. So I had to use iptables -I INPUT 5 ... to add the rule in the fifth ...