Why Cisco Devices refused SSH connection
Network devices usually managed through SSH services. Sometimes, those devices lost SSH access with” The remote system refused the connection.” error message presenting on the SSH client such as SecureCRT.…
How to gracefully shutdown network devices
1. Checkpoint Firewalla. Gaiacommand line : haltb. SPLATshutdown 2. Avocent Console Servera. ACS5000login as root user with default password avocentthen halt b. ACS6000 3. Juniper SRX firewallsrequest system pwer-off 4.…
JFlow, CFlow, NetFlow and SFlow
Netflow was initially developed by Cisco in its Quality of Service (QoS) program. It is a switching method that allows more efficient switching of packets according to the type of…
Gartner Magic Quadrant for SSL VPN (2012, 2011 and 2008)
2012 from : http://www.gartner.com/technology/reprints.do?id=1-18BC075&ct=111213&st=sb Juniper , Cisco and F5 network are leader in this market. Checkpoint is in the visionaries quadrant. 2011 Major players are not having too much difference…
Send email out to Internet with a Blat Command
1. install sstunnel from http://www.stunnel.org/download/binaries.html 2. Using a text editor like notepad, make a file containing what’s in the text box below. Click the Select text button to highlight the…
BSD Router Project (BSDRP) on Vmware
BSDRP is a nice software which allows you connect your networks with a free , full functional router in complexed topology especially for testing environment. I was looking for a…
Add static route in Smoothwall
Add static route in Smoothwall Firstly, edit the file /etc/rc.d/rc.netaddress.up Above the 'echo "setting up firewall ……."', add: /sbin route add -net destination netmask subnetmask gw gateway devdeviceinterface ————————————– Edit…