Network Security

Hi all,I've a ASA 5540 and configured a Site-to-Site VPN, but the IPSEC tunnels frequently goes down, and when I ping a remote host, the tunnels go UP. Is there a way to keep the tunnels always UP?Thanks Tauer

Our ASA VPN clients are connecting and everything is working fine except that a large number of users are using two DNS servers that I want to decommission. While the ASA access-list allows the DNS traffic, neither one is configured to hand them out ...

Hello,I'm wondering if somebody else has experienced similar problem with ASA 5520. We have an e-mail server on inside and spam filter on outside. I have allowed smtp from spam server to e-mail server on inside and www from any outside to e-mail serv...

Hello, I've a cisco PIX515 6.3(5) with some kind of image problem.I've issued "no access-list" in config t and it stopped responding.It generates output below end reboots over and over.I have tried to upload pix635.bin image file to it but this does ...

Hi,Looking for some help with backup ISP configuration on ASA 5505. I have attached my configs as site-a and site-b.I have a simulated internet using a router as a frame relay switch and 4 hub/spoke routers that can all ping each other. That part of ...

Hopefully someone can help me out with this issue that has been going on for about 4 months now. I have a user that runs a SAS application over a l2l vpn tunnel that will crunch numbers for a long period of time, finally generating the data results a...

I am looking at an ASA5510 that is using the management port for several VPN connections. It has connected at 100/HD and I am not sure what will happen if I start trying to force that to full-duplex. Will this take down the port? Will it cause any of...

I'm trying to create a new check in NAC to verify Vista's Firewall is enabled. I created a registry check for Windows XP Firewall however it doesn't seem to work with Vista. Here is the Check I created for XP: Windows XP Firewall Check Registry Key:H...

Hello,Is a primary and standby IP address required for EACH interface on the firewall for failover to work properly?I have setup a pair without having a standby IP on all interface, and only having it on the stateful failover link, and failover seems...

How can I allow an in-bound RDP connection over SSH on my ASA 5520?

Hello,We have 2 email servers with 2 Nics. One has a public IP (e.g 10.10.10.10)NAT'ed to it's private IP for inbound email, so inbound email is fine. Now our ISP only accept smtp traffic from 10.10.10.10 and the issue I have is the server with the N...

I keep getting the message VPN Terminated by client Error 433. No specified reason. I have installed and re-installed. I need to get to work. Any help greatly appreciated!