Newest port Questions

Q&A for system and network administrators

Ideas to properly rate-limit port 25

I need some ideas on properly rate-limiting port 25 on Xen VPS nodes. Ideal solution would be to have a set limit of outgoing emails for each VPS, with option to allow higher limits on a per-VPS basis....

Confused about rsync, port 873 and NAS

I am trying to set up a backup from my NAS (QNAP TS-469 Pro) to my PC running Ubuntu 16.10, using the "Backup Station" offered by the NAS. If I ssh to the NAS and run the following commands, the ...

Diagnosing web server port 80

Got Windows Server 2012 installation for work, by a network admin(first time around dealing with a server, or setting up apache from scratch etc). Setup Apache to get things rolling, so I can at ...

Configuring a port setting on Linux server

I'm trying to allow Internet traffic to port 7778 on my server, but am unable to do it correctly. Probably making some rookie mistake here. Can you help me diagnose and solve the issue? I simply did ...

HAproxy redirect all HTTP requests from single frontend to single backend (multiple ports)

I have haproxy installed and it works just fine, currently I have configuration that looks as follows frontend public_http # Listen on port 80 bind *:80 mode http # ...

Trying to open port 443 on Debian Linux. What am I doing wrong?

iptables -A INPUT -p tcp --dport 443 -j ACCEPT followed by a netstat -tln shows tcp 0 0 0.0.0.0:2822 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:587 ...

How to remove access to a port using firewall on Centos7?

Had a port opened up to for public use using firewall-cmd, I wanted to limit this port to a specific IP which I found the answer for on this SITE. I used the following to open it: $ firewall-cmd --...

IIS, have two different sites with different ports accessible at SAME domain, but with added postfix

I have searched for this but I haven't come across a post with my exact scenario. I have a site www.example.com which runs on port 443 since it has a SSL certificate installed. I have another ...

SSH on port 8122 for everyone except one IP

I have a Linux server I have ssh access on port 8122 but from my current office i can't access this port since it's blocked by the proxy. Since I don't want to change the port I wanted to know if ...

Iplanet server administration port

I have sun one iPlanet web-server 6.1 installed on unix machine. Can any one tell me, where can I find the administration port of the server so that I can access admin console for the same.

Ubuntu server: port seems to be closed, even though it shouldn't be

I am trying to run a websocket service that listens on port 8765. I can reach it from the machine itself, but I can't reach it from outside. I use ufw and everything works when I disable ufw. Here ...

SRV record to serve a webpage at a specific IP/Port

I have a website "mydomain.ca" And I have a web management front end hosted at different IP, port 1234 I'm trying to get a SRV record to work so that whenever I go to subsite.mydomain.ca it will ...

Login problems after changing default port ssh

I changed the Port in sshd_config file and restart the service (Using Linux Debian 8). Logged out from SSH (Putty) and I tried to login later but I can't connect through Putty anymore.. I tried to ...

Conditional Port Redirection on Local Machine Ubuntu iptables

I am new to this community and also to the tool I want to use, namely iptables, so please bear with my incompetence ^_^ Anyway, my situation is as follows: I have a private LAN with private IP ...

Is it possible to open a CSF-LFD closed port without attaching an IP to it?

CSF-LFD blocks nearly all open ports. It also blocks port 10000 which I need. I can open the port via a similar code: cat << EOF >> /etc/csf/csf.conf tcp|in|d=10000|s=aa.bb.cc.dd EOF ...

Which ports does NMAP scan for OS-detection

nmap offers OS-detection functionality based TCP/IP fingerprinting by sending six probing packets and analyzing their responses. In the documentation is says that some of them are send to an open port ...

IIS WordPress site on alternative port and rewrite rules

I had 2 websites running on a server with 2 different hostnames. Lets call them 1 - hostname1.host.com 2 - hostname2.host.com hostname1.host.com was bound to a WordPress site and hostname2....

Munin node not showing up in overview

I have munin and munin-node installed on a "master" server, (lets call it server1) and munin-node installed on a second server (let's call that one server2) I am fairly certain that my configuration ...

Sending message to two clients behind one public IP [closed]

So recently I have been developing a simple UDP server and client application (using C# with .NET), however I seem to have hit a dead end and am in need of advice. The current situation is that the ...

Using Centos Firewall how to assign multiple IPs to a Port? [duplicate]

Setting up a new zone, with a port that has restricted access to an IP address. How does one apply this to more than one IP? $ firewall-cmd --new-zone=special $ firewall-cmd --permanent --zone=...

VirtualBox with RDP through ssh tunnel

I have a strange requirement that I thought would be easy to do but turns out to be more complicated than I thought. I run a heavily firewalled HPC scientific cluster. A user wants a Windows 7 VM to ...

How to open a port on CentOS 7 when firewallD is not running?

I am trying to set up PacketFence, but the switch is comunicating on ports 1812 and 1813. I had made a fresh install of CentOS 7 and now I need to open the ports - I did some research but everyone ...

Centos 7 apache cannot bind port 80

I've a freshly installed Centos 7 with just the basics and apache-php-mysql but I cannot find a way to run apache on port 80. Since the machine is used just locally I've disabled selinux and firewall,...

Opened a new port :8083, but cannot connect from anywhere

I have a remote ubuntu 14.04 OS and recently opened a new port 8083 by adding two lines on the /etc/apache2/ports.conf as below Listen 8083 Listen 0.0.0.0:8083 My public IP for my remote server is ...

How do i redirect on my Server 2012 R2 incoming domain requests?

I have two virtual machines on my server which use port 80. How do i redirect sub1.home.home to machine 1 and sub2.home.home to machine 2 I think my router is not capatable for that, so port 80 ...

pfsense: port forwarding rule allow open port but looks close

I'm trying to forward the port 2222 to a ssh server running in port 2222, inside the network works fine, so I guess is something in pfsense. I try to do the same in a testing environment and works ...

why cant I only access a port from localhost?

I am trying to set up elasticsearch on my mapR issued redhat virtual machine. It comes pre-loaded with the mapR ecosystem. I installed elasticsearch via yum. I am able to listen to it from inside the ...

How to force Port 25 to a VPN IP Address

I have a Cisco RV350 Router with a public IP, but the ISP does not allow port 25, and I have a VPN connection to Azure, so I have a public Azure IP address that allows port 25. How do I forward all ...

Poudriere custom pkg issues

I created a custom Pkg in my Freebsd Server, I got running my .txz in my server and runs well, but The package in my own vm install's ok. But when I try to install it into the jail in Poudriere I got ...

Can't run 2 Socket.io based apps with Nginx

I have 2 Socket.io apps. The first one is running on localhost:3000 and the second is working onlocalhost:8878. What I want to do is to reverse proxy them in the way that the first one will work on ...

Ports safe to use?

I'm going to choose some ports for my own service use, I'm looking at IANA's list: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt What's the difference ...

On Which port phpMyAdmin connect to remote database

My centos 7 phpMyAdmin unable to connect to remote database as i think the security policy is not allowing it (port may be disabled by firewall). As i checked the same configuration on wamp phpmyadmin ...

Which high risk ports need to be blocked in the print server?

Can you please help in finding the high risk ports that are to be blocked for the printer server. Server is on a Hyper V platform. OS : Microsoft Windows Server 2008 R2 Standard

How to configure port access with restrictions for zabbix agent and server using firewall?

I have my Agent / Server configured correctly, I know this because it was working. I just made changes to the firewall on the agent side restricting access on port 10050, but permitting the Server ...

Unsure about IIS usage of ephemeral ports

There was a discussion at my work today about the usage of ephemeral ports. The discussion was about how a request from a client will hit the server on port 80(this was only a discussion about HTTP ...

FTP data connection-Unable to build data connection: Connection refused [duplicate]

I am planning to create an ftp client and at the moment I am testing some ftp commands via telnet. However, only the ftp control channel seems to be working and the ftp data channel has not been ...

Nginx listening on port 443 , firewall is off still cannot connect

netstat output: tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN - ...

Sever Security: Blocking access to all* ports

I've got a question - I currently have a VPS with OVH. I have also searched but couldn't find anyone with a question exactly like mine! Would it be practical to block all ports except 80 & 443? ...

Cisco RV325 - Error Policy Violation in Log

We are seeing new error logs when clients are trying to connect to our Cisco RV325 router. 2017-02-22, 06:09:30 Connection Refused - Policy violation IN=eth0 OUT=eth1 SRC=192.168.2.190 DST=72....

Windows 2003 dynamic ports rellocation

After digging the internet for a way to relocate the dynamic ports start number and range... I found the following registry settings... HKLM\Software\Microsoft\Rpc\Internet (Key) \...

Comparing the kernel's net.ipv4.ip_local_port_range setting to a webserver's port setting

Being new to webservers, I need to clarify a concept. Apologies if this is a less-than-stellar question. It's recommended to set net.ipv4.ip_local_port_range = 1024 65535 in sysctl.conf. However, ...

Setting sub domain DNS to route default port 80 to custom port

I have a subdomain let say work.example.com also I have a server with a public IP let say 192.0.2.4. I have an application on my server that running on Ubuntu 16.04 LTS on port 8088, so this is ...

How much NIC and ports is pre-requisite to building my own webserver host [duplicate]

I start study web server, and i have a goal create my own server web. To start NIC part, i have shallow knowledge about networks, so complementing my question, how work NIC for a server web-host: ...

Want to run 8080 port existing server block which has SSL running on 80?

I am already running my site on 80 and want to open another port says 8080 but its not working when I typed "https://papa.fit:8080". server block papa.fit server { listen 80; listen [::]:80; ...

Make port appear as subdomain

I have Jira set up to serve on myserver:8080. There is an DNS A reference that points jira.otherserver to the ip address of myserver. (otherserver is going to host the Jira setup in the future) ...

User-specific SFTP Tunnels

Basically, I have a couple differant Centos7 LAMP stacks running on differant virtual machines (on xenserver) & openSSH. I also have a couple intermediate proxy authentication servers running (...

Which Ports need to be accessible on a Domain Controller for Clients to logon? continued

With reference to one of the questions asked "Which Ports need to be accessible on a Domain Controller for Clients to logon?" I have a aligned issue being faced. Please see the following ports which ...

Nginx - Create multiple webhooks on one subdomain

I am trying to create multiple Webhooks in Nginx for Kik Chat-Bot's written in Node.js The thing is, If I create a subdomain for each Bot, it works perfectly fine. The Config for "one-bot-per-...

WordPress database connection not working after port change

I've recently changed a WordPress site that is hosted on a local server from port 80 to port 8080. I did this initially just by editing the binding in IIS. The site kept redirecting itself back to ...

Can't access AEM instance on AWS EC2 through public IP

since I'm pretty new in this area, may I have ask for your wisdom about why I can't access the AEM instance through public IP? Below is what I did: Installed Adobe AEM to the EC2 instance Made sure ...
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