Cisco Systems is an American multinational corporation that designs, manufactures, and sells networking equipment.

learn more… | top users | synonyms

0
votes
1answer
66 views

Cisco ASA5505 ASDM Access Issues [closed]

I am installing Cisco firewall solution ASA5505. but cannot access user interface. I navigate to ASA5505 local website 192.168.1.1 from Windows 7 connecting to ASA5505. After the navigating, Java ...
1
vote
1answer
129 views

How to prevent DHCP Starvation attack?

All this while, I assumed that switchport security is enough to prevent DHCP dos attack. If I set it maximum 1, there can be no more mac addresses packets. But, a friend told me that using the tool, ...
0
votes
1answer
88 views

NetFlow IP Spoofing/Reflection Attack Detection

Is it possible to detect IP spoofing/reflection attack via NetFlow? Thanks :)
1
vote
1answer
162 views

How authentication using md5 works in this ospf example?

I am trying to understand how md5 authentication works between this 2 cisco routers. The password is cisco in both routers. In the output in the field Auth Data: the hash is different in every packet. ...
0
votes
1answer
55 views

Network and Security Associates v.s. CISCO Security Associates [closed]

My college is expanding the Information Technology department to include Networking and Security as well as the CISCO Security. In my research online I have found different information for each ...
1
vote
0answers
113 views

Routing Protocol Encryption

As far as I know 'newer' versions of routing protocols support authentication between routers. What about encryption and integrity checks? Some implementations like this one from Cisco use MD5, which ...
5
votes
1answer
252 views

Are RADIUS and TACACS+ Ever Allowed in FIPS 140-2 Compliant Scenarios?

Are RADIUS and TACACS+ Ever Allowed in FIPS 140-2 Compliant Scenarios? I understand that RADIUS uses the MD5 hashing algorithm and I'm pretty sure TACACS+ does too, and I do not believe there is any ...
0
votes
3answers
10k views

How to effectivily block torrents on my network?

Hie, As per my network policy, we have to block all torrent traffic from network. To do this, I used to block all ports above 1024 on my firewall/proxy devices. But due to this, many other ...
3
votes
2answers
1k views

Help Configuring Cisco Router

I have some network issues in my network due to misconfiguration of Cisco router and switches. Please give me some advice or solutions to fix these vulnerabilities and configuration issues. ...
2
votes
3answers
7k views

Access router if you don't know password

At home I have a wireless cisco router. Unfortunately I wasn't smart to change its ip or passwords. So anyone who is connected to it can access 192.168.0.1 and log in as admin using password admin and ...
0
votes
1answer
295 views

Securing my firewall (both dedicated and iptables-based) [closed]

I have an ASA-5510, but I also intend to maintain strict IP tables on my server (Ubuntu 12.04.2), so that there are two layers of "protection". My iptables look like this: *filter # Allows all ...
2
votes
2answers
376 views

BEAST mitigation on a Cisco ACE 4710 load balancer

We are looking to mitigate BEAST (and similar) on our Cisco ACE appliance (running version A4(2.0)), which is the 'endpoint' for a handful of load-balanced services. Some of these service still run ...
3
votes
1answer
410 views

How does VTP authentication prevent unauthorized access (Can the password be cracked given captured packets)

I know that when setting up VTP across switches in a network you should set a secret/password to prevent unauthorized requests. My question is I know that this uses an MD5 hash to ensure that ...
2
votes
1answer
117 views

find hardware and OS specs on routers

How do you determine the model and IOS version of a Cisco router, if you have its IP address remotely, but have no physical access. For example, I run nmap -sP and can see the router's IP, but all ...
2
votes
1answer
699 views

Tacacs+ scenario: can I permit user to configure only for one interface and deny others

I'm currently deploying TACACS+ with a Cisco device, I use a TACACS server from here: http://www.shrubbery.net/tac_plus/ My scenario is: I want to permit a user to configure my router but only for a ...
-1
votes
1answer
6k views

How to install Cisco VPN Client on Windows 7 64bit [closed]

I have Win7 64bit. Have Cisco VPN Client winx64-msi-5.0.07.0440-k9. Now i try to install it. But after i click first "Next" button in istaller i get error: "installation ended prematurely because of ...
5
votes
5answers
18k views

Cracking CISCO ASA Passwords

I've got a copy of a Cisco ASA config and i want to crack the following example passwords I've got the following lines in the config ASA Version 8.4(2) ! hostname ciscoasa enable ...
0
votes
1answer
211 views

Weird issue with Firewall blocking NATed packets

From my SIEM I am seeing that a (we don't own the FW) Cisco ASA is blocking packets destined for the internal network (post NAT), here's what I'm seeing (IP addresses are faked due to security) ...
5
votes
1answer
118 views

Symbiote Counter-Attack Detection

I saw this video on YouTube about hacking Cisco phones (and other embedded systems) and I was overjoyed when the presenter not only hacked, but presented a security solution. Intrigued, I started ...
2
votes
2answers
419 views

Ordering of shared Phase 1/ISAKMP VPN policies

The various Phase 1 settings of a VPN tunnel policy are fairly well-established (encryption, hashing, DH group, lifetime), but in what order are they considered applicable to a more-secure tunnel? I ...
3
votes
3answers
346 views

Hacking a Cisco 2801 Externally

2 days ago, we had a maintenance checkup in our server room. I noticed that the inspector was carrying a 6 meter fiber-optic cable, and a handheld strobe light with his equipment. Now, I had an ...
2
votes
2answers
360 views

Does an equivalent for netconf exist in the Cisco ASA world?

I'm looking for a method to send instructions to a Cisco ASA without writing scripts to execute on the CLI over SSH. Cisco doesn't seem to support netconf or xml-pi on the physical ASAs (only their ...
-1
votes
1answer
598 views

Linux tools to choose suitable Cisco ASA 5500

I have a linux webhosting server which affects a high DDOS. I want to use Cisco ASA 5500 Series Adaptive Security Appliances to protect the linux server from this DDOS. I know there are many factors ...
3
votes
2answers
401 views

1 PIX firewall, 2 routers, 2 switches. Please answer a couple questions about hack lab

I bought a bunch of cisco equipment for a project and I got 1 PIX firewall 2 switches and 2 routers This is my plan for a topology but I am new at this so I need help. I am basing this off the ...
0
votes
1answer
477 views

Cisco PIX SNMP enabled or not?

On a Cisco PIX firewall, I wanted to check if SNMP is enabled: pix# sh snmp-server no snmp-server location no snmp-server contact snmp-server community public no ...
5
votes
1answer
466 views

Trying to prevent Cisco toll fraud

A little back story on the setup first; We have a Cisco VoIP setup at our remote office(where I'm at) and the main CCM/CCX/Unity setup is at the parent company across the US in Connecticut. We have ...
5
votes
1answer
721 views

I'm having a DDoS attack, my hosting company is stupid, and I need to know what is hapening

So ok, right now my windows 2003 dedicated server is under attack by some guy who's flooding UDP packets (~90.000 packets/sec) on my 100Mbps server for the last 8 hours. I'm on a shared port, so I'm ...
2
votes
1answer
501 views

How do Cisco devices identify routers?

Our network administrators forbid the usage of private routers in our college. They bought new Cisco equipment (routers, switches) which detect routers and automatically ban them (it disconnects the ...
4
votes
2answers
1k views

Cisco IOS question - password management, service password encryption types

I'm university student studying for my certification exam, and I was doing some reviewing today when I found a question that I can't find an answer to. Basically, in the CCNA3 2.4.1 Cisco Netacademy ...
1
vote
2answers
706 views

Cisco ASA Default Route Issue

We have a test environment which mimics our enterprise network security design. In this test environment my team and I would like to bypass our DMZ entirely. This seems easily enough done by simply ...
9
votes
6answers
6k views

Automated tools for Cisco IOS config auditing?

Are there any automated tools for auditing config files exported from Cisco IOS devices? Free/Open Source is always nice, but anything that does the job would be of interest.
3
votes
1answer
781 views

I'm using a Cisco ASA as a VPN endpoint. Where do the VPN clients get firewalled?

(Is this too application specific? It seems like a reasonable question that would be useful to other people...) So, I've got this ASA in front of a network that I didn't set up. It's been ...
4
votes
2answers
1k views

Cisco ASA Security Contexts: Any Real World Installs?

We are looking at deploying a Cisco ASA 5520-I am looking at the security contexts feature, and was wondering if anyone has deployed their ASA in this way, and how it is working out for them. Have ...