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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0answers
21 views

Is it possible to redirect all port 53 traffic? [on hold]

We want to redirect all port 53 traffic to our DNS server using a "Raspberry Pi" acting as a switch. Is this something that is possible/realistic? (All DNS traffic, including applications that try to ...
-6
votes
1answer
19 views

How to serve a file over a specific port? [on hold]

On this page is states that Adobe Flash Player checks port 843 for a socket policy file. However, what I'm wondering is, how can I serve my own file over port 843 on my VPS? ...
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votes
2answers
51 views

Linux: How to find out which ports did my application use [without being root]?

I have the following question. On a CentOS machine I run an application which connects to another system. I am interested in finding out on which ports (input/output) the communication happened. The ...
0
votes
4answers
44 views

Best Method to test Opened Ports [on hold]

We have a requirment where in we have to test 500+ Port opening rules. So requires a suggest on below points. Which is the best tool to test the connectivity of the ports. Telnet will be sufficient ...
0
votes
0answers
20 views

Monitor traffic on ports with Cacti

This seems like a basic question, but i haven't found any solution yet. Recently I've installed Cacti for interface traffic monitoring. That works fine, but I would like to see these graphs for used ...
0
votes
1answer
31 views

cannot send emails to other Web servers

I'm trying to limit my server's open ports in CSF. The IPv4 port settings include: # Allow incoming TCP ports TCP_IN = "22,25,53,80,110,143,443,587,3654,53343” # Allow outgoing TCP ports TCP_OUT = ...
0
votes
1answer
23 views

Amazon Security Groups: Change Inbound SSH Port

How can I change the Inbound SSH Port on my Amazon Security Group? When adding a new rule for SSH, the Port defaults to 22 and cannot be edited. Is this possible? Please note: This question is ...
0
votes
1answer
39 views

Run sshd on multiple ports but different domains [duplicate]

I want to run my sshd server on multiple ports but different domains. The server should be reachable as following: ssh -p 12345 example.com ssh -p 22 git.example.com I tried to modify ...
1
vote
2answers
26 views

Haproxy backend servers on different interfaces

I have a haproxy server which gets limited to some 60k connections. I think it is because of ephemeral port limit as I have 1:1 connection mapping, so all my outgoing connections go to the same ...
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votes
0answers
44 views

Nginx multiple IPv6 ssl

I'm running several websites with Nginx 1.6.1. Now I want to make them accessible over IPv6. Normal HTTP is working but with ssl I have problems. Site1 server { listen xxx.xxx.xxx.1:80; ...
0
votes
1answer
27 views

Is port 21 active?

I have recently installed sftp (secure shell ftp) into proftpd. Knowing that the default port for sftp is 22, I have also changed the port value from 23 to 22 in /etc/proftpd.sftp.conf. So I expect it ...
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votes
1answer
43 views

Hiding services from port scan

Upon running a port scan on my server: 22/tcp open ssh (protocol 2.0) 80/tcp open http nginx 1.4.6 (Ubuntu) 443/tcp open http nginx 1.4.6 (Ubuntu) 3000/tcp open ppp? 3001/tcp open ...
3
votes
4answers
472 views

Varnish on 80, nginx on 8080, on which port to put jenkins?

On my staging server, I have Varnish + Nginx. They are on port 80 and 8080. Given that I have to install jenkins, on which port I have to bind it ? (which is usually 8080 but it's already taken)
0
votes
1answer
68 views

How do I block all access to machine except port 3389 using Open vSwitch

I can allow access to the machine and block everything else using: ovs-ofctl add-flow xenbr0 "dl_src={mac-address} priority=39000 dl_type=0x0800 nw_dst={ip-address} idle_timeout=65000 action=normal" ...
1
vote
2answers
68 views

How to get the port number a user ssh'd in on?

I am transitioning servers away from port 22 in an existing multiuser environment. I have configured sshd to listen on two ports: 22 and the new port. Now I would like to detect when a user connects ...
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votes
3answers
65 views

SSH on linux | CentOS [closed]

I have a Linux server using CentOS. I have changed the SSH config to make it a little more secure, First I changed the from from default 21 (or 22?) to 34786. This way if someone tries to hack in at ...
-1
votes
1answer
37 views

What is the difference between an accelerated LAN port and a regular non-accelerated port? [closed]

Can someone explain the difference for me? Wondering more about the difference for the end user, but a technical description would also be helpful.
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votes
1answer
59 views

Can't access apache by port 80 from external

I followed a lot of solutions I found, but it still doesn't work. I can access the server by port 80 inside my network, bui I can't on another one, just by another port (like 62, as I set). Files: ...
0
votes
2answers
18 views

How to append mysql access to iptables

On one of my servers, I can see this: ACCEPT tcp -- distinct_server_ip anywhere tcp dpt:mysql By doing sudo iptables -L | grep distinct_server_ip And with ...
-1
votes
2answers
46 views

Get domains accessed through a specific port [closed]

I'm developing a product and at a certain point I need to get domain names used to access some service on a specific port. Let's suppose I've a computers network with Internet access through a Linux ...
0
votes
0answers
16 views

Can Azure load balancing, balance to several ports on one (or more) VMs

I have a single threaded application (on an Azure VM), which I want to run one instance per cpu core. I will need to use one port per instance. (e.g., ports: 81,82,83, and 84) Is it possible to load ...
1
vote
1answer
86 views

tomcat cannot change port 8080 to 80

I want to change the port 8080 to the default HTTP port (80), to use a Jersey Application as HTTP-Restful API. Therefore I replaced the port from 8080 to 80 (within /etc/tomcat7/server.xml) and ...
0
votes
0answers
63 views

Daloradius / Freeradius mac authentication

I setup a centos freeradius mysql with the frontend daloradius using the steps on this site http://linuxdrops.com/install-freeradius-with-web-based-management-daloradius-on-centosrhel-debian-ubuntu/ ...
1
vote
0answers
47 views

Man-in-the-middle attack at Starbucks [closed]

I'm using Charles to sniff out the traffic on my iPhone at Starbucks and for some reason it won't work with at&t wifi. Google Starbucks wifi does, however. I use my iPhone to connect to the same ...
0
votes
1answer
44 views

How to ensure Netgear GS724TP is not blocking Dropbox Lan Sync - port 17500

We're a small company using Drop Box for business but have noticed that Lan Sync refuses to work on our network (it works fine at home). After trouble shooting the issues on the Dropbox forums, it's ...
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votes
1answer
64 views

How to close port 8080 from all except ip 127.0.0.1

I am on Centos 6 with Nginx on port 80 and Apache2 behind him on port 8080. I've written an anti DDOS script which works fine when ip access port 80, but if attacker directly spams port 8080 ...
-1
votes
1answer
165 views

Opening port 587 on Debian running on Google Compute Engine

I'm attempting to use port 587 for my server mailing purposes. However, I can't seem to be able to unblock the port even after trying the following : Adding port 587 to the Google Cloud network ...
0
votes
2answers
49 views

CentOS - Allow FTP access through IPtables

Sorry guys for the stupid question, but I can't open my FTP (ProFTPd) from browser on CentOS 6.5. When I stop IPtables I don't have problem, but when is running I have. Port 21 is open, port 20 is ...
-1
votes
1answer
22 views

how to help 2 devices share local ports behind firewall through a ssh server with ssh reverse tunnel port forwarding [duplicate]

A diagram of the project: It is working under Putty with its GUI configuration, but it is not working if using command line through Putty. how to replicate the GUI settings in putty with command ...
0
votes
0answers
27 views

Network Issues Connection to SQL database on MS server

Prior to asking this question, I followed this thread: Cannot telnet to SQL Server on port 1433 I am attempting to connect to a database on a server distinct from the computer upon which I am ...
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votes
1answer
101 views

Ports needed for the vSphere 5.5 client to connect to the vCenter

We are currently setting up a new vmware environement based on ESXi 5.5, with the virtual appliance and vSphere client. After a lot of research (maybe I didn't searched well), I couldn't manage to ...
0
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0answers
73 views

Port 80 Occupied

When trying to run Apache from the Windows Command Line, it gives the error (OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted. : make_sock: could ...
1
vote
1answer
237 views

Trouble changing SSH port

I'm running a CENTOS web server with WHM and CSF firewall. I'm trying to change SSH from the default port. I've opened up the port in CSF and modified /etc/ssh/sshd_config uncommenting the port line ...
0
votes
1answer
133 views

UFW — How To Open Port 8080

I thought I had allowed connections to http-alt (8080) using ufw. My reasoning for thinking this is because: gerrit2@localhost:~$ sudo ufw status Status: active To Action ...
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votes
1answer
22 views

Changing Samba port doesn't work

I want to change the Samba default ports for testing. I tried adding "samba ports = 1445" to the samba config, but now I can't connect to it at all! I also tried adding -p 1445 to the samba start ...
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votes
1answer
131 views

Failed to bind to: /0.0.0.0:443 [closed]

I am having problems starting my play framework server on port 443,i am using scala play 2.20 and my play server running fine on port 9443 by following command ./start -Dhttps.port=9443 ...
13
votes
2answers
619 views

How should I select the port number for a new tool?

I'm creating an internal collaboration tool that will use a central server (on an intranet) and one or more ports for socket communication to clients. I know that many ports are reserved for ...
0
votes
1answer
64 views

proxypass /jenkins to port 8080?

Hi I have a VPS running cpanel and it is also running Jenkins on port 8080 I have used proxypass in the Apache config to redirect jenkins.rystuff.net to port 8080 but was wondering if there is a way ...
1
vote
1answer
32 views

redirect to specific port without apache

I'm running a few small web applications listening on different ports... 8787, 8888, & 8000. None of them are apache though. Is there any way via either DNS or iptables, or some other way, that I ...
0
votes
1answer
80 views

Failed PCI DSS Compliance

I got this from my compliance check results. To me it looks like my router is responding to their test but I'm not sure where to go . ( might be off track completely though) Description: PCI DSS ...
0
votes
3answers
109 views

IPTABLES won't keep changes on restart [duplicate]

I have a hostgator VPS that has a CENT OS. When I stop the VPS and start it again, the changes I've made to the IPTABLES won't save I've tried to save the IPTABLES and to no avail. Every time I ...
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votes
3answers
126 views

Port 8080 on CentOS 6 didn't open to outside [closed]

I've running a webserver with Bottle in Python. The server is running on port 8080. But from outside it doesn't work en he can't connect... This is the output of: semanage port -l|grep http ...
0
votes
1answer
58 views

Ubuntu IPv6 port redirect using ufw

I'm trying to configure port redirection from port 80 to 8080 on server with both IPv4 and IPv6 support. The OS is Ubuntu 14.04 with the 3.2* series kernel. It is a production server, so I don't want ...
0
votes
0answers
100 views

One public IP and two web servers

We have our IBM server (internal ip: 192.168.1.128) connected to internet via router (192.168.1.1). I have forwarded the following port: Port 80: internal IP 192.168.1.128 for incoming HTTP ...
0
votes
3answers
75 views

CentOS/Linux Block External Port

Suppose I have an internal service running on port 7676, how would I (On CentOS) block port 7676 from external sources, so that it can only be accessed locally - AKA 127.0.0.1, not using, for example, ...
2
votes
2answers
507 views

Nginx 502 Bad Gateway - 111: Connection refused, port not being listened to

I'm aware there are many other similar questions but the solutions from those questions I feel I've already got in place. I've got 3 sites running locally on a VirtualBox Ubuntu 12.04.4 LTS Server, ...
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votes
3answers
47 views

How do I get iptables to allow a new port (for a webserver sockets handler)

In the local development server, I don't have any iptables rules (running on a Mac). The production server however, runs CentOS 6 with certain rules. I need to add a rule that allows the client to ...
0
votes
1answer
69 views

Error changing mysql 5.6 default port

I've changed my.ini with port=3308 but after restart the service mysql 5.6 is working in the same default port 3306. I've tried in mysql 5.5 and it worked fine. C:\Archivos de programa\MySQL\MySQL ...
0
votes
0answers
15 views

how to identify and eliminate previously assigned port

We are running Sharepoint WSS3.0 2007 standard. We used to allow a sister division to utilize this product. I have moved them to a Google site. Now, I believe I want to make certain that the port is ...
3
votes
2answers
139 views

After kill -9 process won't disappear and port is still bound

We have a Java server application running on Mac OS X. Occasionally this application has become unresponsive, and we have resorted to killing it with kill -9. However, the process doesn't disappear; ...