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Issue When allowing eBGP traffic through a Check Point Firewall you may receive the following error message on your BGP peered routers. (This error may occur at the point of pushing a policy to your Check Point Firewall), TCP-6-BADAUTH: Invalid MD5 digest from [Source IP]:[Source Port] to [Dest IP]:179 Solution This is down to the … Read more
Juniper introduces a new feature to the area of routing, called Virtual Routers. The model consists of: interfaces are applied to zones and zones are applied to Virtual Routers. Virtual routers allow for you to segment routing updates in and from the firewall/router. Virtual RoutersThere are 4 different types of routing tables that you can … Read more
GNS3 (Graphical Network Simulator) requires 4 installed dependencies for Fedora. Please note that this is based on GNS3 0.5. 1. Qt >= 4.3 2. Python >= 2.4 3. Sip >= 4.5 4. PyQt >= 4.1 To install all 4 in Fedora run the following command, sudo yum -y install python sip qt4 PyQt4
Issue When trying to add a device I get the error A hypervisor is already running on port 7200 Solution This is due to some Dynaip processes not finishing after the closure of the previous GNS3 session. Close the GNS3 GUI and run the command (via CLI) pkill -9 dyna
Under “Perferences | Gerneral | Terminal Command” , enter the following, xterm -T &d -bg black -fg white -e ‘telnet %h %p’ > /dev/null 2>&1
Issue When I start VPSC, in GNS3 I get the following, When I try and click test under Dynamips I get Failed to start dynamips When I try and drag a router over to the main screen I get Cant start Dynamips on port 7200 Resolution Copy the file cygwin1.dll from your VPCS folder into … Read more
Issue When I try and click test under Dynamips I get test failed to start dynamips When I try and drag a router over to the main screen I get Cant start Dynaips on port 7200 Resolution This is normally down to the paths in “Perferences > Dynamips” not being correct, check that both … Read more
Issue When I try to open a PIX or drag it over to the main window I get the error Cant`t start pemu on port 10525. Resolution Under the “Perferences > Pemu > Working Directory”, change the directory to C:\Documents and Settings\%username%\Local Settings\Temp
Below shows you how to install GNS3 onto Ubuntu 8.04. GNS is a Graphical Network Simulator allowing you to build virtual cisco networks. sudo apt-get -y install dynagen python-qt4cd ~wget http://kent.dl.sourceforge.net/sourceforge/gns-3/GNS3-0.6.1-src.tar.gztar xvfz GNS3-0.6.1-src.tar.gz && rm GNS3-0.6.1-src.tar.gzsudo mv GNS3-0.6.1-src /opt/GNS3cd /opt/GNS3sudo mkdir Dynamipssudo mkdir IOSsudo mkdir Projectsudo mkdir Cachesudo mkdir tmpsudo chmod o+rw -R ./Projectsudo chmod … Read more