Wifi Connection / Understanding Ip Addresses

Feb 23, 2011

When I connect to a public wi-fi connection (e.g. library, hotel, Starbucks), am I sharing the same IP address?

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Cisco :: No Addresses Available For SVC Connection

Apr 21, 2013

When I try connecting via anyconnect the logs (and anyconnect messages) state the connection "cannot be established due to no addresses being available for SVC connection'". The group etc has a dhcp scope assigned, (and this was working for the past year). I'm not sure what config changes (if any) he made before leaving.

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Understanding Subnetting And Classes?

Dec 8, 2012

I am currently trying to understand Subnetting via CCNA. My progress is going well,I understand the class below:

Class A 0-127 Max IP 2^24 = 16777216
Class B 128-191 Max IP 2^16 = 65536
Class C 192-223 Max IP 2^8 = 256

However I have seen an example from an ip calculator website, and noticed this :

Address: 11000000.10101000 .00000001.00000000
Netmask: = 16 11111111.11111111 .00000000.00000000
Wildcard: 00000000.00000000 .11111111.11111111
Network: 11000000.10101000 .00000000.00000000 (Class C) - I would have thought this would have been Class B?
Broadcast: 11000000.10101000 .11111111.11111111
HostMin: 11000000.10101000 .00000000.00000001
HostMax: 11000000.10101000 .11111111.11111110
Hosts/Net: 65534 (Private Internet)

Is this an invalid IP/masks as the max hosts is 65534 (which should be class B?). If so shouldnt the IP address range from 128-191- eg 172.16 (I know that CIDR is the amount of 1's. ).What calculates the class is it the netmask or the range of the first octet?

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Cisco Routers :: RV042 When Updating / Adding Mac Addresses / Table Is Always Sorted By IP Addresses

Oct 8, 2012

In  setup for old RV042 (V1),  when updating / adding Mac addresses, the table  is always sorted by IP addresses. But in the new oneRV042 (V3) I have, even with latest firmware  the list  is random, thereby increasing the chance of user entering DUPLICATE IP addr  with diff Mac addr.  That will result in conflict.If the firmware sorts the DHCP entries by ip addresses, user would be  able to catch duplicate ip errors even if the system does not flag the  errors.  All Cisco smart engineers can you all get the dhcp entries SORT by  ip addresses.

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Cisco WAN :: Connection On Multiple IP Addresses - 2951

Feb 9, 2012

configuring my Cisco 2951 router with Z0ne-based firewall. This is the scenario I would like to configure.
I have two ftp servers,S1 and S2, behind the router which needs to be accessed by two groups of users, G1 and G2, from the outside, i.e., from the internet.
I have two public IP addresses, and The WAN interface of the router is configured with IP address G1 needs to access S1 on and G2 needs to access S2 on
What are the steps in configuring the router if I need the above scenario to be implemented?

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Understanding And Configuring Windows Gateway

Mar 20, 2011

Understanding and configuring windows gateway

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Cisco WAN :: 1900 - Internet Connection And Multiple IP Addresses

May 30, 2013

Today I was having a conversation with my Cisco Academy teacher from a few years back, and we couldn't figure this out.I am getting an internet connection via Verizon FiOS. Instead of giving me an ISR, they're going to just give me an ethernet cable. Here's what I want to do with it.
This cable is going to be plugged into a 1900 series router. Connect to that will be a 48 port switch. Connected to that will be multiple servers to be used for web hosting, email, databases, etc. My ISP is providing me with 13 public addresses, however, it is not my own unique subnet.
Here comes the question; how would I set this up? The way I was originally thinking was to assign one IP to fa0/0, a second to fa0/1, and then assign the fa0/1 address as the default gateways for all the hosts on the inside. But then I realized that it won't let me have the same network on 2 ports.

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Cisco :: Understanding Route Summarizing And Network?

Jul 19, 2012

I have four networks:

I understand that the summarize route is ( I'm trying to understand which other networks fall under this route and how

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Cisco :: LMS 4.0.1 / Understanding Change Audit Report?

Jun 27, 2011

I need to understand why change audit report reports an unused username Name of the user who performed the change. This is the name  entered when the user logged in. It can be the name under which the LMS  application is running, or the name using which the change was performed on the  device. #The User Name field may not always reflect the user name. The  User Name is reflected only when: A config change was performed using LMS. #A config change was performed outside of LMS, but the  network has username-based AAA security model, wherein authentication is  performed by an AAA server, which could be TACACS/RADIUS or local.

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Cisco Firewall :: ASA 5505 / Understanding NAT For Both Version 8.2 And 8.3

Mar 1, 2013

ASA 5505 Version 8.2 or older nat (inside) 1 (INTF4) 1 (INTF5) 1 (INTF6) 1 (INTF7) 1 (outside) 1 netmask (outside) 1 interface
I believe this setup does the following. The inside interface and interfaces 4,5,6,and 7 will translate using this line....

global (outside) 1 netmask

and if the addresses run out is will start using the ouside interface IP address to translate, so traffic is not disrupted and is based on the line of configuration.....

global (outside) 1 interface
My question, does it do this because of the order of the configuration..
global (outside) 1 netmask (outside) 1 interface
or would it do it that way even if it was like this?
global (outside) 1 interfaceglobal (outside) 1 netmask
and if so why?Now let's convert the above configuration to ASA 5505 Version 8.3 or newer.
object network OUTSIDE-NAT-POOLrange network INTERNAL-SEGMENTSsubnet (any,outside) dynamic OUTSIDE-NAT-POOL interface
My question is how does it know to use the outside interface as a backup when the OUTSIDE-NAT-POOL is depleted?Also why do I need to define the INTERNAL-SEGMENTS ? Doesn't the "any" in the (any,outside) take care of that?Also wouldn't the "any" in (any,outside) cover interface 3 or DMZ which could be an issue?

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8080 Understanding Safety Of Open Ports

Oct 28, 2012

I am a D-I-Y type of guy and have managed to setup Apache on my LAN and make it accessible via WAN over port 80 and Tomcat on port 8080.I aim to possibly get a home web server up (will calculate the costs), but I need some questions answered about networking.

My understanding on ports are that they can be a risk if left open (which I have done) if there is no service or application listening on my side on those ports.So I take it that leaving those ports open and removing the services or applications that run on my side for these ports is a major security risk?

I noticed though that Xampp (1.8.1) does not allow requests over WAN unless I set my password for Apache. Does setting this password imply that Xampp is safe to use in a production environment?

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Cisco WAN :: 3825 Security Bundle Understanding

Dec 22, 2010

I need to understand security bundles. I purchased a Cisco Security Bundle, Advanced Security, 64F/256D. part number CISCO3825-SEC/K9. My expectation from this device was that I will get an IOS based firewall with no need for an additional firewall module. however, the supplier is telling me that I have to buy a firewall module to use the feature. Isn't the bundle supposed to come with all I needed since is a bundle?
Is there any command I can use to verify if this device is really what I paid for? what can can I check for in the sh inv and sh ver commands? I don't see any information from these commands.

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Linksys Wireless Router :: E4200v2 - Understanding USB Interface

Jan 13, 2013

I need to understand the USB interface.

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Cisco Firewall :: ASA5505 - Understanding ASA Bundles And Licenses?

Oct 10, 2011

Any document which expalins what you need to know when looking at purchasing an ASA5505.  Which clearly describes the verious permitations and combinations of these lovely little boxes?
I recently purchased a basic: ASA5505-BUN-K9
I realise now this comes with 10 internal users, 2 ssl and no anyconnect mobility.   All these can be purchased as additional licenses.
Its my understanding that to support unlimmited Internal/Inside hosts - I need to purchase the L-ASA5505-SEC-PL (Security Plus License)
1) What is the model I should go for if I want to support unlimmited interneal.  Can a 5505 be purchased with with security plus?

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Cisco Firewall :: Understanding ASA 5505 Service Contracts?

Feb 18, 2013

I currently have 2 5505 SEC BUN as Primary/FO Firewalls and I am considering purchasing the ASA5510-AIP10-K9 for use as a dedicated IPS device.  Looking at [URL] I see that for service updates, CON-SU1-AS1A10K9 is available for this product, providing  "IPS Signature and Engine Updates" and "OS Updates."It is my understanding that in the ASA5510-AIP10-K9 there are 2 OS:

2. AIP SSM-10 OS
My question is: Are both the ASA and AIP SSM-10 able to receive "OS updates" with this service contract?

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Cisco Routers :: RV220W - Understanding Logs / Clearing ISR

Aug 19, 2011

Looking at the logs RV220W I can read the following lines:
[rv220w]Fri Aug 19 18:28:54 2011(UTC) [rv220w][Kernel][KERNEL] Clearing the ISR a800000003378400
[rv220w]Fri Aug 19 18:30:39 2011(UTC) [rv220w][Kernel][KERNEL] Clearing the ISR a800000003378200
[rv220w]Fri Aug 19 19:23:04 2011(UTC) [rv220w][Kernel][KERNEL] Clearing the ISR a800000003378e00
[ code] ....

What are they?? and what should be done ????.

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Cisco Switching/Routing :: Understanding Existing Setup With Two 3750s

Jan 10, 2013

We've recently inherited a platform with little handover and also minimal networking experience.We're going 100 miles an hour in learning, but I'm a bit confused with the idea of a L2 switch with no IP assignments to ports, so using VLANs, and a L3 switch with IP assignments. And the combination of both.We have 2 Cisco 3750 switches, along with a whole host of other hardware, so we're starting at this "gateway" to start breaking things down.

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Cisco Switching/Routing :: Understanding Mls Qos Queue Set Output With 3750

Apr 16, 2012

I've been  working on breaking down and understanding the default auto qos  configuration on a Cisco 3750 in the hopes of putting together a QoS  strategy that will fit our environment.  I'm having some difficulty  understanding how the "mls qos queue-set output" syntax works.
From another post, at [URL], the author offers the following example and explanation;
mls qos queue-set output <1/2> threshold 2 400 400 100 400thresshold 1: 400%
thresshold 2: 400%
thresshold 3: 100% (implicit, not configurable)
reserved: 100%
max: 400%
However, I'm having trouble understanding what is meant.  Here, it looks like it's saying, for example;
mls qos queue-set output 1 threshold 2 400 400 100 400
How  come there is syntax stating "threshold 2" when in the succeeding part  the 400 refers to thresshold 1 and threshold 2 again?  The syntax 400 400 is, apparently, already referring to thresshold 1 and 2, no?

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Cisco WAN :: 6500 / 3560 - Understanding Backplane / Throughput And Capacity

Jan 16, 2012

I have been trying to understand from a long time about the throughput capacities of variety of Cisco Routers and Switches. Have searched over a million pages on cisco.com for data sheets/documents/etc. but havent succesfully got a single document highlighting all of what i need.
I have got queries on the below issues:Which model of Router can support upto 2Gig's of WAN Internet connection running BGP? Any list of routers and switches supporting variety of throughput's from 1 MB to 1 GB.I have heard some experts stating "Switches don't have throughput concerns as they switch the traffic and don't need to route traffic" How true is the statement?? and if it is, Why do we require 6500's instead of 3560 Distribution Switches. 

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Understanding NAT Table And Its Chains (pre-routing / Post-routing And Output)?

May 28, 2011

I'm learning about iptables, but I don't fully understand the chains of NAT table (prerouting, postrouting and output).I'm specially in doubt about prerouting and postrouting. As far as I know, DNAT can be made with prerouting and SNAT can be made with postrouting, so I think prerouting is for input and postrouting is for output, but the material I'm reading (and another sources) are not clear.

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Cisco :: Wifi Connection And Intranet Cable Connection

Nov 26, 2012

I have a problem with my computer connections.When I plug in a network cable to access LAN, a wireless Internet connection gets disconnected.When I unplug the cable internet connection through wireless comes up.Some computers can support both connections cable for LAN and wireless for Internet.Other computers do not support both connections.

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No Internet Connection Through Wifi Or Cable Connection?

Jun 26, 2012

My hp laptop will no longer connect to the internet thru both a wifi connection or cable connection. I've also tried to do a system restore to an earlier date and it will not let mme do this either

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How To Add Wifi Connection

Mar 6, 2012

I have BT infinity connection with modem /router on ground floor. Wireless signal can be picked up easily until second floor. Third and fourth floors have very poor signal so I have run a cable from modem to top floor - completely hidden so no issues there. On the top floor I have a Netgear network switch FS605 running three cables into three rooms. All works fine.What I want now is to replace the Netgear switch with one that also offers a wi-fi connection so that my iPhone / iPad can connect via wi-fi on the top floor. I still need the wired capability.

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Get Net Connection Via Wifi?

Sep 5, 2012

i want to know how to get the net connection via wifi

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Get A Wifi Connection?

Feb 6, 2012

I need to know how to get a wifi connection

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How To Bridge Lan And Wifi Connection

May 4, 2011

I already know how to bridge the lan and wifi connection so I can plug in an ethernet cable from the laptop to my desktop and get internet that way, but is there a way to actually turn the laptop into a router when it's connected to the router, wirelessly? I tried using ad hoc but it looks like that only works if I'm directly connected to the router.

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Way To Make Wifi Connection Better

Oct 25, 2011

Should i get a wireless adapter Or a wireless repeater Which would be better for a better connection?My router is down stairs and my xbox is upstairs.I could get the wireless adapter upstairs then do an ethernet cable straight to my xbox.

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Wifi Connection Keeps Dropping

Jul 10, 2011

Recently I have been having problems on my home Wi-Fi connection. Every so often, I drop my connection. It happens many times during the day, and it is really starting to annoy me.On the Wi-Fi connection, are 3 other laptops than mine connected to. About 3 months ago, the problem began for me, only recently have the others also gotten the problem. As we stand now, we are all craving for an explanation.

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Wifi Connection Keeps Dropping?

Oct 7, 2012

My atheros ar9285 wireless network card continuously drops my connection, now I've seen other topics about this put there solutions dont work. I hear McAfee can cause problems? It is on a asus k5dij laptop and my wi-fi is provided by bt using a bt home hub 3 type b. Find attached my Xirrus screen shot and my cmd ipconfig when i learn how to get it on to this website.

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Setting Up Wifi From Connection?

Aug 6, 2011

what i got is an internet connection from a network socket in my room where when i conect my computer to it and open a browser i need to enter a username and password in. once my connection to the net has been idol for 30 mins or my computer is switched off i then get disconnected and have to sign in again via my web browser.

what i want to do is stick my router in to that connection and then connect to the net wifi style with my i pod/wii/phone/ laptop ext ext.

how i do this without having to keep my pc switched on.

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No Sharing Tab For Wifi Connection?

Oct 20, 2012

I'm trying to Bridge my wifi connection with a LAN to connect my XBOX 360 to Live. I have made the bridged connection with an LAN and my Wifi, and can connect to the bridge from my laptop, however from all of the guides I've tried following, they all say that I should find a Sharing tab under my wifi connection's properties, however I only have a Networking tab.

my specs are:

Tech Support Guy System Info Utility version
OS Version: Microsoft� Windows Vista� Home Premium, Service Pack 2, 64 bit
Processor: Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz, Intel64 Family 6 Model 23


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Getting Ps3 To Catch Wifi Connection

Jan 23, 2011

My friend has a PS3 and it doesn't catch the WiFi signal from the router.Router is a Belkin 54g. The PC's in the house all have a perfect wifi signal. I personally have never owned a PS3 or seen the settings/menus/options.He told me he tried to do a "quick format" and messed around with settings but still doesn't get a signal.The PS3 is the old fat bulky ones.He used to be able to get a signal a while back but it was only for a couple days and now he just gets nothing.Is it possible the wifi card in there needs to be replaced?I have not seen his WiFi setup options or distance of ps3 to router.

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Internet Connection Through Wifi

Sep 11, 2011

How to connect to the internet to other laptop through wifi

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