Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
Hi all,I have several questions about how CBAC really works with ACLs, I would appreciate any income on this issue.I know, in general, CBAC works by inspecting traffic and creating a temporary opening in the ACL(s) to allow valid return traffic to pa...
Hi,I got following error message in a Cisco router's log file, NAT: In FTP PORT Address, wanted ',' got '_'Does anyone happen to know what's the cause of this problem? Thanks a lot in advance!
I need some help with this log message. Could anyone help? Or I should post questions regarding NAT to a different forum? Let me know if you know a better one. Any information will be appreciated! Thank!
There are lots of security tools that are capable of doing this. For example, the hping tool with "-a" option.If you want to craft ip packets in your own particular way and inject them into the network, there is a library called libnet.
Before you draw the conclusion that it was the NMS workstation that sent a lot of ICMP requests, you may need to run a sniffer directly on it or check its ICMP protocol statistics to make sure it's not the case that other machine spoofed source IP an...
Thanks a lot for the reply. I have 2 more questions about this issue.1) As far as I understand, the NAT is a layer 3 function, translating source and/or destination IP addresses (sometimes along with ports if PAT is used) between inside network and o...
