Question about Linksys Wireless-G WRT54G Router

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Port redirection How can I setup my WRT54G to except port 19410 and redirect it to port 8080.

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Posted on Jun 24, 2008

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What are redirects


In reference to a webserver, a redirect is a function of the server that listens for requests that matches, such as a port, like port 80, a standard web request, and sends the request to port 443 (secure SSL).

Apr 29, 2016 | Apple Ipad I-pad

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I'm having trouble accessing my Quickbooks Online through my router model WRT54G


That is common problem, try to reboot your router as a temporarily solution. This router has weak stability when network is overloaded, check for settings related to traffic filtering and turn them off, any redirects, any firewall rules. Or make clean reset for the router and check will it work on basic WPA encryption setup only.

Jun 02, 2010 | Linksys Wireless-G WRT54G Router

1 Answer

NetGear WGR826V has no clear port forwarding section in the setup, the mamnual is as clear as brick as to forwarding...so how do I forward a port on this brain dead router?


Forwarding Port – If you select 'Same as Incoming port' then all incoming traffic on specified Service is forwarded to LAN server without modifying Destination Port. – If you select 'Forward to another port range' then all incoming traffic received on the Service port (or range of ports) is forwarded to this port or range of ports of the LAN Server. – This field is disabled if action selected is "Block Always". – If you want to forward the traffic to a single port then enter port value in start port and leave finish port empty. – If you want to forward the traffic to range of ports then enter non zero value in finish port and make sure that service record attached to this rule has range of ports and range is equal to that of forwarding ports. – For example if you select Service as HTTP (TCP/80), LAN Server IP address as 192.168.15.10 and Forwarding port as 8080 then all traffic coming from internet on – TCP/80 (HTTP) to this Router is redirected to TCP/8080 port of 192.168.15.10 • WAN Users: These settings determine which packets are covered by the firewall rule, based on their source (WAN) IP address. Select the desired option: – Any All IP addresses are covered by this firewall rule. – Address range If this option is selected, you must enter the "Start" and "Finish" fields. – Single address Enter the required address in the "Start" fields. • Log: This determines whether packets covered by this firewall rule are logged. Select the desired action. – Never - never log traffic considered by this firewall rule, whether it matches or not. – Match - Log traffic only it matches this firewall rule. (The action is determined by this firewall rule.)
Ok well this is out of the manual, to me it seems straight forwards, but it is a brick too though, there is an example to help you, basically you tell it the Address of the PC, (Right click on NIC and get address) that you want ports to go to.. then ALLOW it, UN-disable actually.. in the tables.

Feb 05, 2010 | NetGear WGR826V Router (wgr826vna)

1 Answer

How to setup up my cctv cam to sonicwall tz170


If your camera is connected to DVR then do the port redirection on your firewall so that you shall view the cameras from internet, If your camera is directly connected to network using RJ45 simply do the port redirection to IP address of CCTV camera.

Nov 19, 2009 | SonicWALL TZ170 (01-ssc-5740) Firewall

1 Answer

I have a zyxel p600 series modem connected to a Belkin wireless router. I am trying to run a web server on port 80. The modem was using port 80 for access to the internal settings. I changed that to...


Your setup looks correct to me. It might very well be that your ISP is blocking port 80. Go here and check from your server if port 80 is accessible.

If you are the only one that wants to connect to you server, you can simply choose another port to use, i.e. www.myserver.com:801. Set port forwarding form port 80 to 801 in your router.
TCP&UDP - from 801 - to 80 - [serverIP] - [Webserver]

The better way is to use a service like DynDNS.com or No-IP.com. You can register a DNS name (like myserver.dyn.com), which redirects to your public IP. The trick is to update your IP address, so even if you have a dynamic IP assigned from your ISP, the redirect will point always to your server. Most routers have the ability to set up with DynDNS, so the process runs in the background and you don't have to update manually - check your router manual.

The second part of this beauty is the redirect to a different port. So even if your port 80 (and 25 for that matter) are blocked, you don't have to have an arbitrary number in your URL (http;//myserver.com:801). You can find more detailed information here.

For a quick check, change your webserver to run on port 801, enter the redirect in your router and see if you can get to your server from the outside (internet). If you still can't access the webserver, the problem is not a blocked port.

Hope this helps, but if you have any more questions, just come back here and leave a comment - I'm happy to help you figuring this out.

Oct 23, 2009 | Computers & Internet

1 Answer

LINUX SQUID SERVER IN TRANSPARENT MODE


Dear Friend....
The examples below are based on the discussion of Linux iptables in Chapter 14, "Linux Firewalls Using iptables". Additional commands may be necessary for you particular network topology.
In both cases below, the firewall is connected to the Internet on interface eth0 and to the home network on interface eth1. The firewall is also the default gateway for the home network and handles network address translation on all the network's traffic to the Internet.
Only the Squid server has access to the Internet on port 80 (HTTP), because all HTTP traffic, except that coming from the Squid server, is redirected.
If the Squid server and firewall are the same server, all HTTP traffic from the home network is redirected to the firewall itself on the Squid port of 3128 and then only the firewall itself is allowed to access the Internet on port 80.
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 \
-j REDIRECT --to-port 3128
iptables -A INPUT -j ACCEPT -m state \
--state NEW,ESTABLISHED,RELATED -i eth1 -p tcp \
--dport 3128
iptables -A OUTPUT -j ACCEPT -m state \
--state NEW,ESTABLISHED,RELATED -o eth0 -p tcp \
--dport 80
iptables -A INPUT -j ACCEPT -m state \
--state ESTABLISHED,RELATED -i eth0 -p tcp \
--sport 80
iptables -A OUTPUT -j ACCEPT -m state \
--state ESTABLISHED,RELATED -o eth1 -p tcp \
--sport 80
Note: This example is specific to HTTP traffic. You won't be able to adapt this example to support HTTPS web browsing on TCP port 443, as that protocol specifically doesn't allow the insertion of a "man in the middle" server for security purposes. One solution is to add IP masquerading statements for port 443, or any other important traffic, immediately after the code snippet. This will allow non HTTP traffic to access the Internet without being cached by Squid.
If the Squid server and firewall are different servers, the statements are different. You need to set up iptables so that all connections to the Web, not originating from the Squid server, are actually converted into three connections; one from the Web browser client to the firewall and another from the firewall to the Squid server, which triggers the Squid server to make its own connection to the Web to service the request. The Squid server then gets the data and replies to the firewall which then relays this information to the Web browser client. The iptables program does all this using these NAT statements:
iptables -t nat -A PREROUTING -i eth1 -s ! 192.168.1.100 \
-p tcp --dport 80 -j DNAT --to 192.168.1.100:3128
iptables -t nat -A POSTROUTING -o eth1 -s 192.168.1.0/24 \
-d 192.168.1.100 -j SNAT --to 192.168.1.1
iptables -A FORWARD -s 192.168.1.0/24 -d 192.168.1.100 \
-i eth1 -o eth1 -m state
--state NEW,ESTABLISHED,RELATED \
-p tcp --dport 3128 -j ACCEPT
iptables -A FORWARD -d 192.168.1.0/24 -s 192.168.1.100 \
-i eth1 -o eth1 -m state --state ESTABLISHED,RELATED \
-p tcp --sport 3128 -j ACCEPT
In the first statement all HTTP traffic from the home network except from the Squid server at IP address 192.168.1.100 is redirected to the Squid server on port 3128 using destination NAT. The second statement makes this redirected traffic also undergo source NAT to make it appear as if it is coming from the firewall itself. The FORWARD statements are used to ensure the traffic is allowed to flow to the Squid server after the NAT process is complete. The unusual feature is that the NAT all takes place on one interface; that of the home network (eth1).
You will additionally have to make sure your firewall has rules to allow your Squid server to access the Internet on HTTP TCP port 80 as covered in Chapter 14, "Linux Firewalls Using iptables".

Good Luck!

Jun 22, 2009 | Computers & Internet

1 Answer

Router not blocking specified site.


There are a couple ways you can do this.
  1. Check the obvious and make sure that if you are blocking by DNS name that you have included wild cards to handle any virtual hosts running on that domain and that you are blocking all ports that could potentially generate the content, not just port 80.
  2. Make sure that you do not have spy ware locally on the LAN PC's that is connecting you to the site or broadcasting content. If you are initiating contact with the server from internal PC's then your inbound policies won't matter.
  3. If all else fails and you can trace the site to an IP, you can always block the IP on your router directly for all ports, set the etc/hosts file on each machine in your organization to redirect that IP to localhost, or set your DNS server to redirect that name/ip to a fake IP internally.

Jan 26, 2009 | Linksys Wireless-G WRT54G Router

1 Answer

Print to a USB port in DOS in Windows XP


This is an interesting question .... I never thought much about using a USB printer in DOS!

Well ...this is probably the easy fix :

http://www.dos2usb.com/


Program called dos2usb which claims to do exactly what you want (15 day free trial download ....$19.99 to buy the program)

The harder fix that won't cost anything is to do some network jiggery pokery to redirect data sent to a parallel port to a usb port. Here's a link on how the folks at Dataflex did it :

http://www.decompile.com/dataflex/tips/usb_printer.htm


Jan 01, 2009 | Microsoft Windows XP Professional

1 Answer

Want to configure the router


Ok, IP port forwarding is pretty straight forward. On the firewall configuration screen specify the outbound port and inbound port. The first should be what you want people on the outside to see it as, the second is what you want yourself to see it as. Next, virtual server pages are setup in your web server software, never seen it configured through the router...but it should be essentially the same thing. You specify a web content location if possible this is a physical path; you would need the permissions set to read only for HTML, read and execute for CGI/Perl or DHTML; and then you would setup domain information, etc or leave it blank and use the IP/Port. Finally if you don't change the /etc/hosts file you might run into some problems computer side because your internal ports will be different then the outside ones. This can effect 2 way communication. So you set it so that the address at say port 80 internally is redirected to say 8080 instead. This way whether your outside or instide you can type the address the same way.

Nov 20, 2008 | D-Link AirPlus DI-524 Wireless Router

2 Answers

First packet in connection is not a SYN packet:


Verizon blocks port 80 traffic to residential customers. If you want to host a website, they expect you to pay for the business service and a static IP.

I am monkeying around with my DNS records on goDaddy to see if I can get http traffic to go to port 8080 instead of port 80. So far, I have not had any success.

I did find no-ip.com, which, for $25/year, will "host" a simple redirect for you, so that when people type in http://yourdomain.com, it actually gets redirected to http://yourdomain.com:8080. That :8080 does show up in the address bar, but I think that's okay. Especially for $25/year.

Nov 08, 2007 | Actiontec (5GE583000-01) Router

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