Cisco Umbrella is a good solution for blocking unwanted websites on your network.
Why Cisco Umbrella is a good solution for a business to provide safe and secure Internet access.
Read MoreTag: cisco
Cisco Systems was attacked in a massive hacking attack.
About 100,000 of their accounts used to manage company assets were all just compromised. An unknown volume of the user, customer, and proprietary information was stolen. All their systems are locked down and are under the excuse of “technical difficulties”. This is another in the list of attacks. Microsoft and…
Read MoreHow to crack Cisco 7 “encrypted” passwords with a simple tool.
This website will crack Cisco 7 passwords instantly. http://www.ibeast.com/content/tools/ciscopassword/. This shows that this type of “encryption” is useless when an attacker has access to view the configuration of the switch. Better to use more stringent encryption like 4096 bit. But this is the way that Cisco work. If you get…
Read MoreConvert your IP address to binary easily with this command.
This one-liner will take your IP address and convert it into binary. This is very useful and fun to do. ┌──[[email protected]]─[~/Videos] └──╼ ╼ $ ipcalc `ip a | awk ‘/inet / { print $2 }’ | sed -n 2p | cut -d "/" -f1` | awk ‘/Address/ {print $3,$4}’ 11000000.10101000.00000001….
Read MoreGet the geographical location of an IP address and other networking tricks.
To get the geographical location of an IP address, use this command. This uses ipinfo.io and gets a lot of information about the IP address. 4.4 Tue Mar 17 jason@Yog-Sothoth 0: $ curl -s ipinfo.io/203.113.124.148 | awk ‘{print $2}’ | sed ‘s/"//g’ 203.113.124.148, 203-113-124-148.revip.totidc.net, Bangkok, Bangkok, TH, 13.7540,100.5014, AS131293…
Read MoreTypes of network attacks.
TCP attacks TCP SYN attack: This attack begins as a normal TCP connection, the client and server exchange information in TCP packets. A client sends an ACK packet to the server requesting a connection. The server will respond with a packet acknowledging the connection and then the data transmission may…
Read MoreGood networking training institute in India.
There are good places in India to learn networking and gain a Cisco certification. The CCNA cert is very important in today`s world, and this is a very good organization to attain this cert. Network Bulls. https://www.networkbulls.com/. This facility offers a fully featured 24/7 lab environment to allow physical labs…
Read MoreHow to crack the cisco telnet password on a Cisco 2960 switch.
Cracking the Cisco telnet password on a Cisco 2960 switch is very easy when you are using the hydra password cracking tool. I used this command to crack the telnet login. hydra -P password.lst 10.42.0.87 cisco This is the password cracking session that resulted in me cracking the telnet login….
Read MoreHow to list all passwords on a Cisco switch.
This Cisco command will list all passwords on a switch. mrrobot#sh ru | inc password service password-encryption password 7 00141215174C04140B70 password 7 00141215174C04140B70mrrobot#sh ru | inc password service password-encryption password 7 00141215174C04140B70 password 7 00141215174C04140B70 The inc command looks for any text that matches the argument. Like this: mrrobot#sh ru…
Read MoreHow to set the time and date on a Cisco switch with the clock command.
This is how to set the clock and date on a Cisco switch using the clock command in privileged exec mode. Router#clock set 11:10:45 24 Feb 2016Router#clock set 11:10:45 24 Feb 2016 Check the date using this command. mrrobot#show clock 11:14:34.844 UTC Wed Feb 24 2016mrrobot#show clock 11:14:34.844 UTC Wed…
Read MoreHow to stop the annoying domain lookup on a Cisco switch.
This is a very annoying feature on a Cisco switch… Router>en\ Translating "en\"…domain server (255.255.255.255)Router>en\ Translating "en\"…domain server (255.255.255.255) But, this is how to turn this behavior off. Run this command in privileged exec mode. arya(config)#no ip domain-lookuparya(config)#no ip domain-lookup And this behavior will no longer occur. arya#help2 Translating "help2"…
Read MoreHow to set an IP address for a VLAN on a Cisco 2960G switch.
To set an IP address on a VLAN on a Cisco switch, firstly access the configuration section for the VLAN in configuration mode. arya(config)#interface vlan 1arya(config)#interface vlan 1 Then the administrator may set an IP address for the VLAN. arya(config-if)#ip address 172.18.31.210 255.255.255.0arya(config-if)#ip address 172.18.31.210 255.255.255.0 Then you are all…
Read MoreShow interface status with the command line on a Cisco switch.
The show interface brief command, issued at the elevated command prompt will show the status of all ports on the switch/router and also show your vlan interfaces you have created. tyrion#show ip interface brief Interface IP-Address OK? Method Status Protocol Vlan1 unassigned YES NVRAM up down Vlan2 172.18.31.128 YES NVRAM…
Read MoreHow to set a MAC address on a Cisco 3700 router.
This command in interface configuration mode will change the MAC address for a specific interface on the router. R1(config-if)#mac-address DE.AD.BER1(config-if)#mac-address DE.AD.BE And this is what I get when I use the show run command and view the properties of the interface. interface FastEthernet0/0 mac-address 00de.00ad.00be ip address 192.168.0.1 255.255.255.0 ip…
Read MoreCisco access control lists I have worked out.
Useful CISCO Access Control Lists These Cisco ACL`s are to block ICMP ping requests from a certain IP address. I developed these experimenting with GNS3. I had two Cisco 3750 routers in GNS3 and I added static IP addresses. 192.168.0.1 for the R1 router and 192.168.0.32 for R2. I then…
Read MoreAdding an IP address to the management interface for a Cisco switch.
Adding an IP address to the management interface of a Cisco switch allows connection over an Ethernet connection to manage the switch configuration. Firstly, switch to privileged exec mode. tyrion>en tyrion#tyrion>en tyrion# Then enter the configure terminal command to configure terminal settings. tyrion#configure terminaltyrion#configure terminal Now we are configuring settings…
Read MoreCalculate subnets with the Linux command line and sipcalc.
The sipcalc utility for Linux is used to calculate subnets for IP addresses. The below example shows a /26 address and the available IP addresses and number of network nodes in the subnet. This is a good way to calculate the network mask if the network administrator requires this information…
Read MoreHow to set a hostname on a Cisco 2950 switch with the terminal.
To set a new hostname on a Cisco router, switch to privileged exec mode by typing enable at the prompt. Enter configuration mode by entering this command. eng_floor_2#configure terminaleng_floor_2#configure terminal Then set the hostname by typing this command. eng_floor_2(config)#hostname eng_floor_2eng_floor_2(config)#hostname eng_floor_2 Now the proper hostname has been set on the…
Read MoreHow to erase the configuration of a Cisco 2950 switch with Putty.
I am assuming that you already know how to access your switch and you do not need any help with this. Log into the switch using Putty and wait until the prompt appears awaiting commands. % Please answer ‘yes’ or ‘no’. Would you like to enter the initial configuration dialog?…
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