All Questions
0
votes
0answers
3 views
Sonicwall - SSH to change admin password
Is it possible to reset a password for the admin account on a Sonicwall via SSH?
0
votes
0answers
4 views
Port forwarding works locally over LAN IP but not over the router IP WAN from another building
I have a commercial setup where everything is on the the same xxx.xxx.xx.1-255 network. I have a D-link router (DIR-615) that is on this network in another building with the router IP as ...
0
votes
1answer
17 views
Why showing IEEE Spanning Tree protocol
I'm preparing for the CCNA and I have a little trouble understanding the outputs for STP.
By default a CISCO switch use PVST (Per VLAN Spanning Tree) but if we use the command show spanning-tree ...
-1
votes
0answers
13 views
please guide me with detail procedure. on launching ASDM
hello guys I have download the ASDM-751 bin file from cisco.com
but I don't know how to install it ?
will I going to need an extra(spare ASA) model, and just console it through my laptop ?
please ...
0
votes
0answers
7 views
How to determine ATM encapsulation type for QoS configuration? [on hold]
I am running a router with Tomato firmware and I want to correctly configure QoS controls. The router establishes a PPPoE connection through the DSL modem in bridge mode. The Tomato QoS settings have ...
0
votes
0answers
11 views
How to configure QoS on router? [on hold]
I want to prioritize applications which use the internet but in the QoS I find the applications are IGMP SIP H.323 MGCP SNMP DNS DHCP RIP RSTP RTCP RTP, I don't understand which of them is responsible ...
0
votes
0answers
12 views
Switching connections in the middle of a session on Windows [on hold]
Is there a way to switch between network interfaces without interrupting the session?
I have an interface that sends data to destination via a UDP Proxy. Now I want to switch between that and my LAN ...
0
votes
0answers
7 views
TACACS with juniper Devices
Can any one please help in configuring tacacs+ server along with configuration in Juniper devices ?
Ubuntu Server 14.04
Juniper QFX5100 switch
Below are my configurations
For TACACS+ server
...
0
votes
0answers
15 views
Cisco Prime Infrastructure : How to access the database?
I'm currently working on Cisco Prime Infrastructure 2.2 and I'm having trouble making my own template.
I'm actually trying to access the interfaces "Description" data from the Cisco Prime database ...
0
votes
0answers
11 views
Port forward from LAN-1 using WAN-1 internet to LAN-2 using WAN-2 internet on the same fortigate firewall
As seen in the diagram is such a network setup possible?
The port forwarding works just fine when I try it from an internet connection from somewhere outside my office but says timeout when trying ...
1
vote
0answers
12 views
IOS to ASA dynamic and static VPNs - sharing same crypto ACL?
Is it possible to have a dynamic and static VPN between the same IOS router and ASA, sharing same interesting traffic/crypto ACL on the ASA end? The two devices in question:
ASA 9.1 - ...
0
votes
0answers
20 views
AP High latency, sometimes disconnection from network
I have 6 APs connected to a desktop switch
http://www.tp-link.com/lk/products/details/cat-4763_TL-SF1005D.html
MY APs are TPLINK TL-901WD
The desktop switch is connected to my main router Asus ...
0
votes
1answer
24 views
Two computers connected by straight through Ethernet cable, communicating with APIPA addresses
Good day, I connected two computers together with an Ethernet straight-through cable. I did not configure any ip address, and after a while they both got APIPA addresses. Now they can ping each other ...
0
votes
1answer
37 views
Configuring routing protocols
I would like to know if I can configure a routing protocol, for instance OSPF, EIGRP, or Ripv2 with out a physical address configured to the any interfaces. But then again by not configuring a IP ...
0
votes
0answers
14 views
Limit interenet speed to a specific pc in workgroup when using ADSL modem [on hold]
Hi Am a newbie in networking stuff. I need to do something very urgent in my local home workgroup. One of my cousin is connecting his PC always to the network to download music movies and not so ...
1
vote
1answer
13 views
Question about Port Triggering
I was reading about this functionality on this wiki (https://en.wikipedia.org/wiki/Port_triggering), and I am unsure what this sentence means in the "disadvantages" section: "On some routers it is ...
-1
votes
0answers
19 views
20 GPS Antennas at One Cell Site?
Most if not all modern cell sites have one GPS antenna and receiver per network operator located at the site. The purpose of these GPS receivers is to synchronize the time-and-frequency across the ...
0
votes
0answers
23 views
Making anti denial of service attack software [on hold]
So I'm trying to make some anti dos software for a school project. I am currently looking at way to try to solve it however I just want to see if there is any far better.
I was thinking of using a ...
4
votes
1answer
42 views
STP blocking port selection
I want to make sure I'm understanding how this works. Specifically the term "Sending Port ID" has me very confused.
Consider this diagram, I want to make sure I have root port selection figured out:
...
1
vote
1answer
27 views
How common is it for mobile network operators to give the same IPv4 address to different 3G devices?
Do they have to give different IPv4 addresses?
1
vote
0answers
12 views
Can we implement OSI model in any type of communication? [on hold]
I am preparing for my final paper but i got stock in the initially in OSI model question.
So, any help will be greatly appreciated.
4
votes
1answer
20 views
Will STP lose data whilst switching from a failed link?
In a network with a dual-redundant link between two switches, will any data be lost during the switchover from an active link to the blocked link when the active link fails?
2
votes
0answers
28 views
How many people share 1 Mbps of an ISP backbone? [on hold]
We all know that all consumer based internet connections are shared and that ISPs protect themselves with "best effort" contracts, also we know that a client's 50 Mbps (for example) connection speed ...
-1
votes
0answers
22 views
SNMP requests filling logs [on hold]
My log file is being spammed with this record:
Source: 10.1.1.1
Destination: 192.168.1.2
From port: 50322
To port: 161
Application: snmp-base
The machine (Windows 8.1) has internet access and has no ...
1
vote
2answers
28 views
Can't configure the Cisco CP-8851 IP Phone
I do not have a cisco contract or license, but I did order the Cisco CP-8851 IP Phone from Amazon, and was hoping that I could configure it to work with my VoIP SIP PBX. But I can't seem to log into ...
1
vote
0answers
17 views
Difference between “show route forwarding-table” and “show pfe route ip” in JUNOS?
Am I correct that "show pfe route ip" extracts information from PFE and "show route forwarding-table" extracts information from routing-engine copy of forwarding table? So this means that in latter ...
0
votes
0answers
10 views
understand the terminology for packet forwarding engine in Juniper routers
Is it correct to say that packet forwarding engines for MX960 series are DPC, DPCE, MPC, etc? And all those DPC, DPCE, etc cards actually include one or more packet forwarding engines? So in similar ...
1
vote
1answer
17 views
Nomenclature of the Acronyms
What does the 'FPS' in WS-C2960S-48FPS-L mean? I have tried to run a search online and have not fount concrete answers so i came here
0
votes
2answers
45 views
DHCP Server On Two Subnet On Single Shared Network
I had been working in a mid-large company, and had limited administrator privilege both server and network.
We had network that had two subnet on single shared network consist of 192.168.1.0/24 and ...
1
vote
1answer
41 views
Spanning Tree protocol Dought
Assuming there are three switches interconnected(Switch1--Switch2---switch3---switch1) to each other and STP has convergence has taken place and there is no change in the topology for a while. Now my ...
1
vote
1answer
37 views
Subnet routing problem
I am attempting to configure a temporary network for a client. I'm having some problems with getting the devices to communicate. Here are the details of the current configuration. *Note: I cannot ...
1
vote
0answers
24 views
Will port scanning affect my networks stability?
My company has 2 separated networking systems: wired and wireless. The R&D department is now developing an application which runs on PC to scan the devices on the wireless network (smartphones and ...
0
votes
2answers
22 views
Buffer overloading at the servers? [on hold]
I am a UG CSE student and I was attending Computer Networks class the other day and found it rather very interesting (My interest has always been to data analysis) .
So here it goes , my college has ...
2
votes
1answer
17 views
How a ping from DLCI 102 going to DLCI 301 instead of 201?
I just configured a scenario of point to point frame relay. As shown in the figure, I mapped DLCI as shown below:
10:102 20:201
10:103 30:301
but I don't able to figure out how my ping from ...
1
vote
1answer
13 views
How to connect to a wired device from a wireless computer that is connected to a separate router
My devices:
A coaxial cable modem and wireless router (one device, Comcast
supplied), with ethernet jacks in the back for wired ethernet
connections.
A Netgear wireless router to which I've ...
2
votes
1answer
34 views
VLAN Trunking Protocol
Is VLAN Trunking Protocol enabled or disabled by default on all switches ?
I have VTP Domain name showing nothing in command "" show VTP status ""
therfore does this mean VTP is disabled by default ...
-1
votes
0answers
26 views
Why 911 calls over WCDMA fail right away, when the rest just hang? [on hold]
In some specific locations, my Google Galaxy Nexus almost always gets a stable 3 or 4 bars of WCDMA (UMTS), yet both data and calls just hang until toggling the Airplane mode or the preferred network ...
1
vote
1answer
23 views
Determine protocol decode for non-standard ports in Wireshark
I'm wondering if there is a heuristic plug-in, software or other process for determining protocol when a non-standard TCP port is used.
Wireshark will decode packets based on the well-known port ...
1
vote
4answers
27 views
Sonicwall TZ215 and Switch Issues
Our IT guy is on vacation for a week and after an hour on the phone Dell trying to resolve the issue with no improvement they gave up.
We have a Sonicwall tz215 and 3COM 16 port dual speed switch to ...
1
vote
1answer
20 views
Forwarding data on a port to another external server retaining source IP
I have 2 linux servers, Server A with IP 1.1.1.1 and Server B with IP 2.2.2.2 in 2 different geographical locations. I want all the data arriving on a specific TCP port (5678) on Server B to be ...
1
vote
0answers
16 views
VPN needs ping directly to a device from the remote ends ASA in order to allow traffic
I ran into a little bit of an odd issue this morning. I have a site-to-site VPN tunnel that is up and correctly passing traffic between two sites. Interesting traffic is specified as a /24 at the ...
1
vote
2answers
43 views
Easiest way to create VPN over a LAN (with good reason!)
We have the situation where we need to network an isolated room in a building to a network on the other side of the building but with an 3rd party company owning all the rooms between them (they lease ...
1
vote
1answer
24 views
Is IP address Subnet Renumbering needed here?
We have a router with NAT enabled on our edge. The NAT inside is 10.0.0.0/24. Now, we're running out IP blocks and we wish to change this to 10.0.0.0/22. We can do this quickly on the NAT router. But ...
1
vote
0answers
22 views
High count of packet retransmissions/Dups over IPSEC/VPN
I'm running IPSEC-VPN (AES256/SHA256/DH14) tunnel between a PaloAlto PA-500 and a Fortigate 110C via Internet (10MBit up/down guaranteed both sides - latency between 40 and 50ms).
90% connections are ...
1
vote
0answers
10 views
IPv6 network addresses with 6to4 router and tunnel [on hold]
I'm currently studying for an upcomming exam and I came across the following question, the IP-Addresses are to be filled in by me and this is my try at solving it, but I'm not sure if the IP-Address, ...
2
votes
2answers
49 views
is it necessary to involve computer with static ip to exchange data in internet? [on hold]
I am connecting to internet via a 3g dongle(that is via a local ISP). When I connect to the internet, my computer is assigned a dynamic IP. I can find this by going to whatismyip. I tried to ping my ...
2
votes
3answers
165 views
OSPF is flapping and how to overcome it?
We have two links for a site , both the links are running OSPF , if one of the link keeps flapping the network at site becomes unstable.
How do it make the flapping link down automatically
1
vote
2answers
35 views
Do bits outside netmask count when defining a range of IP's?
Still trying to understand the IP slash notation.
I am configuring my OSX laptop to connect to the Internet behind the corporate proxy.
For the loopback address to work on my local machine after ...
1
vote
2answers
32 views
Cisco PPPoE over FA with L2TP client only (no IPSec)
This started as a question, with my connection failing to come up, but after a bit of trial and error, the configuration is working, so I've edited it into a solution. Access lists and address ...
1
vote
0answers
25 views
How to proceed for research on Network security? [on hold]
It may out of scope but I have to research on Network security. I have
worked on Signal Processing in Time-Frequency down during Post
Graduation research and have few publication. Now my ...
