I’m a total newbie to Cisco and I have a cisco router on which I have to do some experiments. How can I access this router? Ports available are Ethernet 0/1, Ethernet 0/0, Console, Aux. I guess if I plug an ethernet cable from my laptop into console I can have access to it, but then what should I do? Which ones between 0/1 and 0/0 are for incoming and outgoing traffic? I realize this [...]

If I have a LAN and and connect it with a switch, I understand it uses a CAM table to route packets in layer 2 (by saving mac to port relations). So far all good. However, when using a router for a LAN (ONLY for a LAN, not to connect it to “the outside” WAN/internet/etc) I get a bit confused as to how it internally processes packets. I would first split this into two router [...]

This is our company’s internet gateway router. This is what I want to accomplish on our Cisco 2691 router: All employees need to be able to have unrestricted access to the internet (I’ve blocked facebook with an ACL, but other than that, full access) There is an internal webserver that should be accessible from any internal IP address, but only a select few external IP addresses. Basically, I want to whitelist access from outside the [...]

This probably very simple. This was setup before I arrived, and has been working to block facebook. I recently eliminated some static port forwarding on this 2691 (as in, I don’t think anything else has changed), and now facebook is once again accessible. Why is this list not doing what it seems like it should be doing (and was doing)? Would an extended outbound ACL be more appropriate (I think that would have been my [...]

For work, I have designed a hardware ‘box’ (actually an industrial control gizmo) which has an embedded web server for the purpose of configuration (much like a regular domestic Internet router has a web server for similar purposes). It’s usually used with a direct connection to a laptop, so that a regular browser (IE8, FF, etc.) may be used to configure the box. The problem that has recently come to light is that if the [...]

Is there any router setting that does the ssh domain forwarding? Currently I have one static IP and have multiple machine under it and I have multiple domains point to same IP and each domain dedicated to specific machine. So I just want to access those machine via ssh. abc.com –> 192.168.1.10 bcd.com –> 192.168.1.11 dbc.com –> 192.168.1.12 I know that we can access the web requests using proxy or load balancer but how can [...]

Okay, so here’s the story: I administrate a server running a web application on my internal LAN, say foo:1234. My team uses this actively. We have now decided to make this application accessible from outside our network – but we don’t want to install it on our webserver. I have forwarded an external port (say 5678) on our (DDWRT) router to foo:1234, and this works fine. The problem though, is that due to certain configuration [...]

I have a Cisco linksys E-1000. It has four wired port and connected to internet. I was connecting one desktop pc using wired, and one laptop using wireless connection. All is managed using DHCP by the router. When I look at the connection information, they bound to the same configuration, the same gateway and the same DNS. All can access to internet. The desktop IP is 192.168.1.125, connected using wired to router The laptop IP [...]

I’m trying to make my PC become a webserver using tomcat. The last time I did it was 6 months ago, and I totally did it. However, I couldn’t do it this time. my steps are: set static IP by go to Local area network properties and go to TCP/IP 4, check use the following IP address and input : open browser and type 192.168.1.1 to access DSL router, to NAT and input like following [...]

I have a pc on which I installed Ubuntu Server and I want to put it online. The problem is when I access the domain that points to my IP, it opens the router settings page, but when I access 192.168.1.xxx it shows the web pages. I have an Asus RT-G32 router. Can you please explain the steps on how I can put my server online up and running? Thank you, Stefan Asked by Stefan [...]