Network Security Questions and Answers

Recent IT Questions

21 - 40 of 280

Packet Filtering information required

Hi, One of our PC which is running on REDHat is sending SMTP packets to the firewall. Though the firewall drops the packet, it logs the same. We wanted to know : 1. IF we have to run a packet capture tool, where do we run ? - on the firewall or the PC ? 2. We ran network monitoring tool, but did...

View Answer   |  Jun 11 2009  10:18 AM GMT
Packet Sniffing, packet analysis, Network security
asked by Jagdish

  60 pts.

A networking device to add an IP device?

I want to know if there is a networking device that can be used to receive a device with a IP address (in this case a DVR) and if this device can then have two outputs and each one being able to be seprately addressed. The reason I am asking this is because I am trying to hook in the DVR into an...

View Answer   |  Jun 6 2009  10:24 PM GMT
Network security, Network administration
asked by Dstar

  5 pts.

How to port forward and map IP on SonicWALL TZ 180?

Currently on my company we are trying to configure our sonic firewall to map an external IP to internal with a port open. This is for our security cameras setup in which we are trying to view them from another network. Can some one help me please I need to get this done ASAP. Our sonic firewall is...

View Answer   |  Jun 5 2009  10:49 PM GMT
SonicWALL TZ 180, Firewalls, Port forwarding
asked by Ricardo57365

  70 pts.

How to detect a "stealth user"

how to find out if you have a stealth user on your system

asked by IT4dumee

  5 pts.

Netgear DG834 fails to block sites using HTTPS

Using a netgear dg834 we have set a block for www.facebook.com this works fine if the users attempts to contact through HTTP but if they do an HTTPS access then this bypass's the filter and allows them access. Any help would be greatly appreciated.

View Answer   |  May 26 2009  11:31 AM GMT
NetGear blocking, Netgear DG834, Router configuration
asked by CITS

  15 pts.

Obfuscation of destination IP address

A self proclaimed security architect told me that there were hacking attacks where the hacker "obfuscated" the destination IP address to confuse the router into forwarding the packet out all of its interfaces and subsiquently the packet would live forever. In my limited knowledge I was a bit...

View Answer   |  May 16 2009  1:01 PM GMT
Obfuscation, catq, Hacking tools and techniques
asked by Below11

  10 pts.

Password protection for Network folders

Hi there, This is Faisal, I have a domain environment platform Win2003 & XP. I want to protect my share folders with the password, plz let me know is there any option available or you suggest some reliable software to protect my network folders when users get connected over the network. Thanks n...

asked by 2390693

  70 pts.

Protecting our internal network

Hi Network engineers/ managers, I've been faced with a challenge on how to protect our internal network from threats outside with minimal cost, or none at all (at least for the software when using open source) Can anyone advise me what to use? Ive searched about, CISCO ASA, ISA 2003, SNORT,...

View Answer   |  Apr 30 2009  3:52 AM GMT
Network security, Firewalls, Network firewalls
asked by JuneC

  140 pts.

sip attacks

I want to test SIP vulnerabilities using Sipp Message generating tool. i have XML files for generating messages. I have sipp running. But i am not able to execute below command. Run sipp with embedded server (uas) scenario: # ./sipp -sn uas Can i get any help. Thank you Regards Sindhu

View Answer   |  Apr 24 2009  3:53 AM GMT
SIP, Network security, SIP Attacks
asked by Sindhukakuru

  30 pts.

How to identify the users in the network

I am working on my Masters Project in which I am supposed to design a Network Monitoring tool which will identify the users in the network based on their network behavior. I have a network setup with 4 systems connected to a Switch --> Router --> Internet. I connected another system to the...

View Answer   |  Apr 13 2009  6:18 PM GMT
Network security, Network Topology, Network design
asked by Sindhukakuru

  30 pts.

Using ISA 2004 to block the majority of sites and allow a few.

I am using ISA server 2004. In that, I have blocked a few sites. Now our requirement is allowing only few sites and blocking the rest. How can I? Please help me in this regard.

View Answer   |  Apr 9 2009  3:49 PM GMT
Networking, Network server software, ISA Server 2004
asked by NetworkingATE

  1445 pts.

How does IPSec Passthrough enable packet transfer through a router?

I have configured a remote access IPSec VPN with UDP encapsulation enabled which passes through a broadband router which in turn has IPSEC Passthrough enabled. The remote access tunnel works fine with the IPSEC Passthrough enabled. However, if the Passthrough option is disabled the tunnel is not...

View Answer   |  Apr 9 2009  3:43 PM GMT
Networking, Network security, VPN
asked by NetworkingATE

  1445 pts.

Port security for Switches

Switch(config)#interface fastEthernet 0/1 Switch(config-if)#switchport port-security Command rejected: FastEthernet0/1 is a dynamic port. why is that happening

asked by Shiko

  15 pts.

Deciphering Event Log ID 529 Audit Failure

We have a small network (less than 50 workstations), and I notice in the Security Event Logs of each workstation there will usually be several audit failures. For example: Event Type: Failure Audit Event Source: Security Event Category: Logon/Logoff Event ID: 529 Date: 3/30/2009 Time: 8:19:25...

View Answer   |  Mar 30 2009  8:06 PM GMT
Network security, Event logs, Event ID 529
asked by SamR

  5 pts.

Disadvantages of installing ISA 2004 on DC

hi all what is the disadvantege installing ISA2004 on DC ? and we have a router d-link for small office , we are thinking to install isa2004 , I know that isa must have 2 NIC 1 external 1 internal , the problem I thinkin that currently the public ip address is on the router , what ip address i...

View Answer   |  Mar 22 2009  10:26 PM GMT
ISA 2004, Firewalls, Network security
asked by MCSE696

  15 pts.

How to locally authenticate users using PPTP on a local PIX firewall

I need to locally authenticate users using Point-to-Point Tunneling Protocol (PPTP) on a local PIX firewall. Once the users have authenticated, I need them to connect to a Windows 2003 server which is hosted at a remote location securely with encryption or some sort of tunnel. I have already got...

View Answer   |  Mar 12 2009  10:27 PM GMT
Networking, Network security, Network firewalls
asked by NetworkingATE

  1445 pts.

How to block a specific URL in Cisco routers

Can you block a specific URL in Cisco routers? If so, can you tell me the steps?

View Answer   |  Mar 12 2009  10:18 PM GMT
Networking, Network security, Networking Equipment
asked by NetworkingATE

  1445 pts.

Routing VLANs to public IPs from Intranet through Fortigate firewall

We have three virtual local area networks (VLANs) as follows: 1 data, 2 voice and 3 wireless. We have 6506e at the core, and interVLAN routing is working fine. The problem is implementing FortiGate firewall in transparent mode and terminating the ISP on the router with Ethernet output. I am not...

View Answer   |  Feb 26 2009  11:28 PM GMT
Networking, Routing and switching, Virtual LAN
asked by NetworkingATE

  1445 pts.

How to see if my Nmap tcpwrapped port is open after a GFI LANguard scan

I ran Nmap 4.0 and GFI LANguard GFI LANguard Network Security Scanner (N.S.S.) on a Windows 2003 server and noticed that the FTP Port 21 is open but tcpwrapped. How do I check further if Port 21 is indeed open? I've checked the IIS6.0 and the Windows Add/ Remove program section there's not FTP...

View Answer   |  Feb 11 2009  6:17 PM GMT
Networking, Network monitoring, Network security
asked by NetworkingATE

  1445 pts.

Can Cisco ASA firewalls restrict Internet access to branch offices?

I have a PPP network between our three office locations. In the master location I have a DSL line connected to my Layer 2 (L2) switch via a Cisco ASA 5505 Firewall. My server (ADC/DHCP/Proxy) is connected to the L2 switch. My branch office locations obtain IP through this server. I am using a Squid...

asked by NetworkingATE

  1445 pts.

21 - 40 of 280