I want to test some pages on several machine.
I have tomcat running on one pc lets say PC1 and several pc are connected to PC1. I want other pc to load the one page from PC1. I have tried some alternatives but it is not working
Does anyone know about this??
Thanks
Troubleshooting
From PCX try pinging PC 1: ping PC1
If that succeeds try doing telnet to Tomcat port (default 8080): telnet PC1 8080
That's probably where it will fail, refusing to connect to 8080.
Alternative 1
You have a Firewall blocking the the other PC to access Tomcat port (default 8080).
Alternative 2
Tomcat is binded to localhost only, and you can't access it from another host.
Look for the tomcat/conf/server.xml file and look for some text like:
<Connector
port="8080"
protocol="HTTP/1.1"
address="127.0.0.1"
...
If you find the address attribute, remove it and it should bind to every ip address.
Related
I am trying to access my tomcat LocalHost on another Computer and while accessing it I want my Selenium Script to be run on Another computer .Please Help me regarding this.
(While Running my Selenium code my browser is running on Tomcat Localhost Computer)
By default I think tomcat starts in 0.0.0.0:80
So it is internet address , you can access the server using network ip from another system in the same network
Eg if network ip is 192.168.1.1 , you can access from another system which has ip 192.168.1.2 , as 192.168.1.1:80
( You can see your ip address by typing ifconfig and ipconfig in linux and windows respectively)
Else edit the ip address using config file and bind the server to your 192.168.1.1 ip
Several connectors are configured, and each connector has an optional "address" attribute where you can set the IP address.
Edit tomcat/conf/server.xml.
Specify a bind address for that connector:
<Connector
port="80"
protocol="HTTP/1.1"
address=""
connectionTimeout="20000"
redirectPort="8443"
/>
I am running Kali Linux on VMware. The host operating system is windows 7, and I'm using NAT for connectivity.
In my metasploit console, when I typed 'exploit' at the msf prompt,(where I am using windows/meterpreter/reverse_tcp as the payload) it showed me the error
Handler failed to bind to My IP:4444
(My IP is my external IP address.)
So in the VMware virtual network editor, I have port forwarded port 4444 of host PC to port 4444 of the virtual PC. Then I allowed inbound packets in the firewall of the host PC, for port 4444 of the host PC.
To ensure that everything is alright, I set up an apache server on the virtual PC, that serves a webpage when accessed via port 4444. The server served flawlessly when I accessed it with an external browser. Satisfied, I shut down the server.
But guess what? Metasploit console has thrown up the same error when I typed 'exploit' again in the msf prompt.
What to do now?
What did it say the reason for failing was.
I'm assuming the full error was failed to bind to port 4444 port is already in use.
You can not run a server on the same port you are trying to bind to.
The correct way to do this is to port forward through your router. Open your router settings and port forward port 4444 to your machines local ip.
I have a Ubuntu Server 16.04 running on a machine in my local network.
The machine has static assigned IP and running apache2. There is no problem in connecting to it from my local network.
I have port-forwarding for ports 22 and 80 setup on my router to the IP address of the machine.
When I check the ports with my public IP address on sites like http://www.canyouseeme.org/ the result is that the ports are open. When I try to connect using my public IP address and using those ports the connections are refused.
I tried disabling firewall in the router and also on the machine, no result.
What else should I try? It seems that the server is getting no incoming connection when I check with netstat.
Just for troubleshooting purposes:
Setup port forwarding on port 22 and try to ssh into your server using the public IP? If it works, it means apache is refusing the connections and not your router or ISP
On your router, setup the server on the DMZ temporarily and check if it works
Add another port forwarding rule on your router to redirect all http requests on port 8000,for example, to port 80 internally, then try to access your server with http://[public_ip]:8000
Have you changed anything on the apache2.conf file? Also, explain how you are testing the connection, internally using the public IP or from the Internet?
I open IE explorer & Chrome in my computer and type localhost:80 and I get the index page.
Here I think my machine's IP is same to both connections (IE explorer & Chrome) and ports are too (80).
Note: Source port will be different (as destination is same: localhost IP), this is my second question.
So how webserver (lets say apache) handles this port 80 connections without failing? Does it port forwarding? In OS level even I tried with addr re-use, port re-use parameters and it is all same we cannot make multiple connection with same IPs & ports.
Now, probably you have came up with a solution: although source ports and IPs are same, destination port is different in package: <protocol>, <src addr>, <src port>, <dest addr>, <dest port>.
A. I got 49483~50004 ports as you can see on image. How client knows which destination port (49483~50004) is bound by webserver? If it is random between 0 and 65355 the webserver always binds all ports, it is very resource consuming. How webservers avoid from this?
Look at this image: command prompt-> netstat
If this question is related with low level sources it is OK, I understand Embedded TCP/IP/UDP, Phy MAC communication and package structures.
You have this all back to front.
All the port numbers at the server are the same: 80. So the client only has to know port 80.
All the port numbers at the client are different: 49483-50004 etc. So there is no ambiguity in the connection, because the 4-tuple you mentioned is unique.
All http request by default call to servers in the port 80, because servers listen by default in that port. So you only give an IP or hostname and the web browser add the default port (80). You can give a custom port if you web server is listenning in another port (usually Tomcat listen by default in 8080) for example you call it in: http://www.youamazingweb.com:8080.
A good example is see the IP as the home and the port is the door where clients enter to consume some resource hosted in server.
I've been having problems with Vagrant since upgrading to Windows 10. At first I had the "host-only adapter" problem that many people seem to be experiencing. This was fixed by updating VirtualBox to the latest version, and my Vagrant box now seems to provision and start ok, and I can SSH into it, but can't connect via HTTP. If I try to access it from a browser, I get "Unable to connect". If I try curling it, I get the message:
Failed to connect to test.dev port 80: Connection refused
I've checked and Apache seems to be running on the VM (and in fact if I SSH into the VM and then run curl 127.0.0.1 the expected homepage is returned). At this point I've drawn a blank: I don't know whether the problem is in Windows or the VM's settings. Any help would be greatly appreciated!
(For what it's worth, I'm using VirtualBox 5.0.15r105158 + Vagrant 1.8.1)
Update: it turns out that the VM is accessible from test.dev:8888 in the browser, so I'm guessing the problem is to do with port-forwarding? I don't know much about this though, so have no idea why this wouldn't be working in Windows 10. (In case it helps, my Vagrantfile contains the line config.vm.network :forwarded_port, guest: 80, host: 8888)
I think you have answered all by yourself - you might read the vagrant doc on port forwarding
Vagrant forwarded ports allow you to access a port on your host
machine and have all data forwarded to a port on the guest machine,
over either TCP or UDP.
For example: If the guest machine is running a web server listening on
port 80, you can make a forwarded port mapping to port 8888 (or
anything) on your host machine. You can then open your browser to
localhost:8888 and browse the website, while all actual network data
is being sent to the guest.
when you add the line config.vm.network :forwarded_port, guest: 80, host: 8888 to your vagrant file, the VM (i.e. call also guest or guest VM) )will forward all the stream going on its port 80 to the host (in you case the windows machine) on port 8888, so in this case when you point your browser to listen on port 8888 you can see the website running from the VM
When you are within the VM though, you point to the expected 80 port.
one additional point (hope not to confuse you): in your Vagrantfile, did you define something for networking ? (param config.vm.network) you probably define a fixed IP (since you point to test.dev) in such case you dont need to do port forwarding, you can correctly access http://test.dev (on default port 80) as nothing else is bounding to this port. Port forwarding is really useful when you use public network and you do not define a fix IP to the guest VM, so in this case you access the site running on the VM from localhost/127.0.0.1, and as such you cannot just point to port 80, as something on your host can already be running.