Here is the question,"If an ISP purchased the following block of IP addresses: 200.23.16.0/20, describe and/or diagram how they would be able to divide this block of IP adresses into 8 subnets for resale. What are the number of hosts for each subnet?"
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We have both a Comcast and Verizon connection at our school. They are going into a Sonicwall NSA5500. The configuration is such that if the primary - Comcast - fails then the secondary - Verizon - will pickup the internet traffic. The issue we are having is with local Verizon customers. When we got our IP address from verizon it was a /24 subnet with a gateway starting at .1
I thought this was strange as every other time I have gotten a block of static IP addresses from an ISP it has been a /29 or /28 at the most. But the ISP confirmed that this is what we were supposed to get and it should not cause problems.
A local business we deal with happens to be on our subnet with the same next hop Gateway. When I perform a traceroute to them, the traffic goes directly out the Verizon WAN interface to our common gateway, then to the local business. This, all while the Comcast Interface is our dedicated primary for all traffic.
I spoke with Sonicwall and they explained that the firewall is simply taking the most efficient path which makes sense to me in some regard but is still confusing why it would use the interface when policy says it is a failover.
Now, this local business tries to send us email with their on premise Exchange - we also have Exchange. The emails will sit in their queue indefinitely and ultimately fail to reach us. If I disable the Verizon interface the emails come in perfectly fine - even some in their queue will immediately come through once I disable it. I thought this was a DNS issue but it is not or at least our DNS is all configured correctly where we have no other problems with email. Our MX records utilize the static IPs from Comcast - nothing is using our static Verizon addresses.
I have a Cisco ASA 5510 with a 5 block of IP addresses assigned from our ISP. I am having issues with connectivity and routing traffic from the outside interface to the outside interface. I have my outside interface set up with IP address of 24.182.x.146, it allows internet access and also hosts a web server. Any time I have a client using this device for internet access, I am unable to have traffic accepted for my web server. I.E 100.100.x.52 is using this device, it browses to https://24.182.x.146 and it gets an unable to connect. I am able to connect to the web server from any other ISP/Device. [code]
View 4 Replies View RelatedI am wondering how I log into the router and block particular IP addresses to include especially Facebook. I have a N Wireless Router F5D8233-4. Is there a way to figure out a site IP address if you open up there website.
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View 1 Replies View Relatedhow do I block IP/Internet Adresses for ALL users without adding the sites manually per user in the Parental Control panel? I want to block a certain IP/internet adress for all users but can't find this feature within my EA6500 anywhere?Is this a firmware bug? Has linskys forgotten that some sites want to blocked for all users and how do I do it all in one?
View 1 Replies View RelatedIn 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 4.2.1.02 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.
View 2 Replies View RelatedOn my desk top home computer (XP Home Edition) connected directly to High speed Internet modem/router with a ethernet cable :The modem/computer connection worked for many months. Recenttly, I had to re-install my Network Driver because of a virus problem. The LAN icon now says :"Status: Acquiring Network Address" but it never gets to a connected status. IPconfig/all shows all 0.0.0.0 I have another laptop (Windows 7) using same network/modem thru wifi WLAN mini card and it connects fine to the Internet. IP values[CODE]
View 1 Replies View RelatedOur company is a small one and steadily growing towards mid size. We currently have about 200 or so users. Naturally we have run out of IP addresses and now we must redesign the entire IP schema.Initially our plan was to just implement a class B subnet for the whole network with certain ranges belonging to certain kinds of devices/machines/servers.Are there any cons to this? If so, could you link me to documentation that explains this?
View 4 Replies View RelatedI have an exercise with picture you find below. The question is: Will the network shown in the diagram work correctly when you consider that the MAC-addresses PC0 and PC8 are the same, and why?
View 1 Replies View RelatedI am in charge of a network that has two dns servers with directorys, one main and one for back up. I also have a cisco firewall.When I run a scan on my network, the scan results return clients that have two diffent IP addresses for one client or server etc.
View 1 Replies View RelatedI have a DIR-615 rev C1 with the latest firmware (v3.13). I am trying to reserve all the IP addresses in my home network, which includes a printer, 3 computers, a network bridge to a PS3, the PS3 itself, an iPhone, and an A/V receiver. On my network setup page, I can see the MAC addresses under DHCP CLIENTS for the wired Win7 computer, a Win7 computer with a USB adapter, the PS3, the network bridge to the PS3, the iPhone.
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Is it possible to have more public addresses to more internal addressees? I have an internet provider which is in control of my router and he is telling me it is not possible. It's a Cisco router and I have static IP address.
View 1 Replies View RelatedI'm planning to setup a network with more than 300 PCs. I know that using class C address is not enough to allocate number of IP addresses required. What I meant in the preceding sentence is that If I use this network address 192.168.1.0 (class C), it will allow only 256-2 = 254 IP addresses, What about other PCs in the network ?
View 3 Replies View Relatedlost ip addresses and also says dns problems .how do i recover the addresses so i can connect to the internet
View 2 Replies View RelatedWe got a bunch of port-sec violations on port fa1/0/42. after checking logs, we noticed that the MAC address responsible for generating the alert was not one, but many.We asked the user, he said he only restarted his computer.The MAC addresses happen to be existing MAC on the network.How is it possible that a port-sec violation is made by many MAC addresses on the same port, successively?
Syslog message generated from device SW_Etage1: May 25 15:17:08 10.100.254.11 1454802: May 25 15:19:11.693 CET: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 6416.8dbb.930e on port FastEthernet1/0/42.
Syslog message generated from device SW_Etage1: May 25 15:17:29 10.100.254.11 1454805: May 25 15:19:32.874 CET: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 78e3.b58f.1011 on port FastEthernet1/0/42.
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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.
View 10 Replies View RelatedI have multiple devices running on my home network. Every once in a while my wireless router starts playing up and I have to reset it.Whenever this happens, it changes the internal IP addresses of the devices. Is there a way to make the router keep the same internal ip address for each device? ie Laptop stays at 192.168.1.8I have a few forwarded ports for remote access to certain pieces of software, so each time the address changes, I have to go in and change these details, which is quite frustrating.
View 7 Replies View RelatedMe and my girl friend both work from home doing freelance work using the internet. The company we do freelance work for allows one agent per ip address and checks the ip address for multiple agents I guess.I only have one modem, router, and two computers, but I believe they are on the same ip address.Is there a way to have two different ip addresses so we wouldn't have any issues with our work here?
View 19 Replies View RelatedHow would I connect hopes to router without getting ip addresses from linksys router , rather i want to get ip addresses from Server 2008 that can be done by DHCP server, in that case how would i disable ip addresses getting from linksys router? each time I connect new hopes to network those pcs should get ip address from Server how it can be possible.
View 4 Replies View Relatedhow to switch between my 5 new static IP addresses that I purchased (on a monthly basis now) from my ISP. I need them for my business so that I can send out more than the 1,000 emails per day from the one IP address to all of my customers which total a little over 1,500 now. Unfortunately I'm quite computer iliterate when it comes to understanding even the basics of computer terminology, etc. My ISP explained to me that if I purchased the bundle of 5 static IPs, then I could in essence send out 5,000 emails per day, which is plenty.
View 3 Replies View RelatedI have various unknown Mac addresses on my network,detecting if they are normal/non harmful OR if I've been hacked! I've uploaded a picture of the addresses, the second to the last address is my router's.
View 1 Replies View RelatedI want to turn off DHCP and setup static IP addresses, but have some questions about applying the information to my specific system.I have a Cisco Wireless Router, 1-wired computer (windows 7) and 2-wireless computers (1-XP and the other is Windows 7). I also have a dual wireless print server, a Roku box, a Wii, a Kindle Fire, and Vonage which is connected between my cable modem and router (this was the preferred installation method by Vonage).I have ran IPCONFIG /All and have all the addresses. My concern is what to use as a static address for my router first off, and then how I go about picking IP addresses for the computers and devices, and how to set then up both at the router and at the computer or device. Also, do I need any IP address ranges for any of this? I'd also like to make sure it would be possible to setup this system with the Vonage adapter connected between the cable modem and router as it's setup now.
View 22 Replies View RelatedI noticed two ip addresses reserved with DCHP on my home wireless. From IP addresses I can't seem to figure out who these belong to at home. All connected computers and devices are accounted for. Could these possibly be someone(s) hacking to my wireless to connect to internet? Or are these for modem setup, etc.?
View 2 Replies View RelatedI have 2 PC's networked via a gigabit switch. They are both running Windows 7 Ultimate 64-bit and are on the same workgroup.Addresses Of both - A: 192.168.0.1 , B: 192.168.0.2 , Both are on the same subnet 255.255.255.0.Can I have 2 LAN ports on the PC - "B" , with 2different IP addresses But connected to the same workgroup.I don't need the second port for accessing the PC-B or accessing any of its files or anything. But can 2 programs access each of these ports independently.
View 1 Replies View RelatedI have been asked to do is locate some computers on the network and run a security scan on them. Well i pinged the host name and got an IP address. Then the network admin me look up the switch port that the computer is located on and so on. So i find 3 of the computers im looking for and when i get on the computer and look up the name but it does not match the name given to me. So i do an ipconfig /all and see that the computer has the right IP address and MAC address but not the same name. So my main question is, are these computers one in the same or is something messed up?
View 1 Replies View Relatedhow can i can all email addresses from my web mail box like gmail , hotmail , yahoo etc
View 1 Replies View RelatedI have various unknown Mac addresses on my network, I need to detect if they are normal/non harmful OR if I've been hacked! I've uploaded a picture of the addresses, the second to the last address is my router's.
View 14 Replies View RelatedI have bridged several w/l Tranzeo's together. I have given each of them an IP address on the same subnet as my gateway and manage the units using that addressOther than for management is the IP address of a bridge used for anything else? I have noticed that I can plug in any gateway address I like and the units are perfectly happy even if the phoney gateway does not exist.
View 1 Replies View RelatedI play this hockey.tk game. I want to change my ip to a different nearby state. For example, If I live in new jersey i'd want to change my ip to New York so I can play the game. How do I change my ip to that? For some reason I got ip blocked on a game.. So I was wondering if there was any way to do that
View 3 Replies View RelatedHow do you resett an IP address for Win 7
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