IP spoofing, also known as IP address forgery or a host file hijack, is a hijacking technique in which a cracker masquerades as a trusted host to conceal his identity, spoof a Web site, hijack browsers, or gain access to a network.

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119 views

Is it a real security benefit if a host uses static IP Addresses for authentication?

As my knowledge about information security is not THAT good and Google did not give me a satisfactory answer I would like to ask the community here: I am working for a company offering online ...
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2answers
42 views

Using pattern matching to make a port more secure

I am planning to make a web application deployed on a port more secure by detecting the pattern of the request an then comparing it with the patern next time that IP tries to connect.Any ways to move ...
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0answers
7 views

Fortigate reverse path check fail [migrated]

I have a Fortigate 1240B with a vlan interface with IP 172.22.0.27/16. When a host directly connected try to ping my IP, I got the messages below. id=36871 trace_id=2 func=resolve_ip_tuple_fast ...
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2answers
110 views

Best practice for sending IP Addresses

IP Addresses are pretty common around the internet so they're often easily found in plain text. However, let's say there's a number of IP addresses configured on a server to allow access through a ...
0
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3answers
113 views

Can one use IP-spoofing to anonymize DDOS attacks?

Since it is possible to fake the source-ip of an ip-package, is it also possible to anonymize DDOS-attacks?
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1answer
65 views

Security against IP Spoofing without consulting network administrator

I was wondering that if there is a Local Area Network and one public IP,through which various clients connect(which have been allocated private IP's).Suppose one of the clients spoofs his IP to try to ...
2
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3answers
500 views

Is it possible to change IP after each request

I am developing a web application. I am planning to skip CAPTCHAs for the initial signup by an IP so as to improve user experience. I was wondering if I am inviting any security risks by doing this. ...
0
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1answer
145 views

How does IP Spoofing increase the upload speed?

I was talking earlier to a script kiddie and claimed that IP spoofing can increase the upload speed in a DDOS attack?! that does not make any sense to me According to him if your server has an upload ...
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2answers
119 views

Isolating guest networks

I'm setting up a secondary guest wifi on my router and I want to make sure that it's impossible for clients connected to the guest wifi to access my primary network. Initially, I used IP filtering ...
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2answers
152 views

Security against IP Spoofing

I am pursuing a college project, in which I am running three fake services on three ports to protect the main service (say running at port 80). The concept is that if the user is malicious, he'll try ...
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3answers
741 views

How to find the actual address of spoofed IPs?

I am convinced that it is possible to find out the real IP address of computer which has spoofed its address. I find it rather unlikely that no techniques exist against IP spoofing. How is it ...
0
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0answers
25 views

MAC changer and VPN can be trusted? [duplicate]

I must spoof my identity for some reason. Are Technitium Mac Address Changer App on windows and VPN is a trusted way to be anonymous?
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1answer
222 views

How does IPSec protect against IP spoofing?

IPsec is a security mechanism that provides peer-entity authentication, data-origin authentication, data integrity, and optionally data con´Čüdentiality. It relies on extensions to the standard IP ...
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4answers
551 views

IP Address spoofing?

According to: https://secure.wikimedia.org/wikipedia/en/wiki/IP_address_spoofing "this technique is mainly used when the attacker does not care about the response or the attacker has some way of ...
0
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1answer
178 views

Preventing DDoS from faked IP address [duplicate]

According to this answer, it's possible to send a network packet with a forged source IP address. So, what methods a server administrator can take to prevent/block a countless requests from faked IP ...
1
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3answers
161 views

How to figure out who is pummeling my WP install with bogus login attempts

I have a WordPress install which uses the plugin Wordfence. I set Wordfence to block the IP of anyone trying to log in with a non-existent username. For several months now, I have been getting many ...
2
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5answers
3k views

Stopping users from spoofing an IP

I have a MikroTik router (that has firewall and scripting capabilities) that is acting as a DHCP server for the 192.168.1.0/24 subnet. Is there any way I can stop it from passing traffic from a user ...
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3answers
2k views

Tracing an IP from a mobile broadband ISP

My honeypot caught a hack attempt from an IP that was issued by Three Mobile Broadband (UK). My immediate thought was that most probable explanation was that the user was in the UK and had his ...
5
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2answers
73 views

What information should I provide to a website or organization when notifying them that their domain may be sending out spam?

Over the past few days, I've received several spam emails coming from the addresses of a school district. I don't know much about email message headers, but since they contain numerous references like ...
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1answer
681 views

IP packet generate manually? [closed]

I have heard that we can create ip-packets by our own and send it to a network or a host. How this Can Be Done ?Please Explain step by step??
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2answers
744 views

In a LAN environment, can you fake the IP address while also being able to receive the response?

Looks like nmap could fake source IP address, and getting a valid response, but only in LAN environment. I'm not sure how it works, here's my thought, You created a packet with fake IP address and a ...
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1answer
404 views

Track IP address of criminals [closed]

Quite recently someone had maliciously stolen my pictures and created a fake Facebook and Instagram in my name, with abusive captions under my pictures. However, with the advice from the police, I had ...
6
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5answers
997 views

Preventing online voter fraud

As part of a promotional campaign, my company wants to launch a site where users (and potential users) of our product will be required to register and vote for certain choices. Depending on how ...
0
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2answers
3k views

Can you track someone using a proxy? [duplicate]

This is past experience, and is not the case anymore since I am a programmer now and have nothing to do with security anymore. However in the past I had a person constantly trying to make comments of ...
5
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5answers
4k views

Why can we not block DNS Amplification attack by blocking UDP packets or DNS response packet?

I mean if the attacker tries to ask all the open DNS resolver respond to a web server. The web server can just block its UDP ports. If the all the DNS response go to a Authoritative ...
4
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3answers
915 views

Is it possible to pass TCP handshake with spoofed IP address?

Little time ago, me and my friends argued if TCP handshake can be passed with a spoofed IP address. Assume I have a https web server that allows only admin's IP numbers. Can anyone connect that web ...
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1answer
101 views

Side Channel Attack Query

People Generally spoof their IP address by using any other device's ip address such as printer, scanner. My question is in this kind of particular attack why we are using these devices rather than ...
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1answer
312 views

Spoofed DDoS mitigation / DNS amplification mitigation [duplicate]

Recently my server has been attacked multiple times, after looking at my firewall I've come to the conclusion that the IP's are spoofed. (10,000+ IP's connect at once) I'm running Win server 2012 x64 ...
6
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3answers
772 views

TCP Sequence Prediction and it's prominence in modern systems/networks

I have a question regarding your experience of TCP Sequence Prediction that I am hoping someone could help with. I am aware of how TCP Sequence Prediction works and how the connection can be hijacked ...
16
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3answers
710 views

Vulnerable code suggested on OWASP?

Session Hijacking Prevention It is good practice to bind sessions to IP addresses, that would prevent most session hijacking scenarios (but not all), however some users might use anonymity ...
2
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2answers
559 views

Does “loose source and record route” drop the source address?

Is the source IPv4 address lost when a person uses "loose source and record route" and the destination address is put before the end of the list of addresses through which routing should occur? It ...
0
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1answer
1k views

How to track down an IP spoofer?

We just installed a SonicWALL NSA 3500 and I've noticed a few times per day there will be an alert entry like this: Time: 01/02/2013 9:00:41.000 Priority: Alert Category: Intrusion Prevention ...
1
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1answer
136 views

Do WPA-Enterprise implementations have built-in anti-IP-spoofing?

i'd like to know if WPA-Enterprise implementations have built-in anti-IP-spoofing. here's what i mean: it seems to me like IP spoofing should be easily detectable and handled under WPA-Enterprise. ...
12
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4answers
9k views

How are spoofed packets detected?

My assumption: When a firewall is configured to drop spoofed packets, it tries to ping (not necessarily ICMP) the source IP and sees if it belongs to a real host or if it's up, and if not, it drops ...
3
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4answers
1k views

How can an internet contest verify unique votes with only an email as an input parameter?

For my computer security course we are brainstorming different ways to use attributes for a unique user (that are readily available over a network) to prevent various mischievous activities. We've ...
2
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2answers
747 views

IP forgery (theories are fine)

Is there any (practical/theoretical) way to forge your IP address? By forging i mean feed to the WEbsite the IP you want. let take PHP as example: You need me to think that your IP address is ...
9
votes
5answers
1k views

Apache/Linux server, DoS attack from own IP

I have an unusual problem I've been trying to diagnose for a while: It's about a Debian server running a custom compile of apache 2.2 with PHP, Red5, MySQL 5.5 (standard binary), sendmail (distro ...
1
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2answers
635 views

Is SSH2 still vulnerable to man-in-middle attacks?

With SSH using RSA public key authentication, can an attacker spoof the server IP address and connect with client to obtain client password?
6
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1answer
748 views

Brute force login attempt from spoofed IP's

I see that many of my WordPress installs are being hit with 1000+ failed login attempts using non-existing 'admin' account name. The requests come from different IP's every time, and I see IP's such ...
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1answer
254 views

how to secure my login user id and passwords specially for facebook [closed]

i think they hack me with facebook cookies. i dont get what exactly is going on with me. every time i get the login notification from another ip location.i want to secure my cookies and i wanted to ...
3
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2answers
255 views

Can ipopts be used to circumvent a pf or iptables firewall source IP based blocking?

Can one use ipopts, and in particular IP source routing, to circumvent source-based blocking in pf or iptables? For example, with OpenBSD's pf: block in all # default deny block out all pass in on ...
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2answers
2k views

How can I spoof my IP address using the PHP curl function? [closed]

I want to spoof my IP address with the PHP curl function. I'm sending requests to a server with PHP curl, my IP address is $ip2, but I want the server to believe that the request is coming from $ip1. ...
12
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6answers
1k views

What tools are available to identify which country a specific IP address is located in?

In trying to identify the country a user logs in from, or to block country ranges for whatever reason (for example regulatory requirements) what tools, whether online or offline, are available?
2
votes
1answer
2k views

Stopping Session Hijacking

If you noticed, I put "stopping" instead "preventing" in the title because I want my PHP application to be as secure as possible. I am wondering if anyone has any better ways to prevent session ...
6
votes
1answer
178 views

Parabolic Denial Of Service — Would it work?

Would this DoS attack be effective: Attacker determines target (10.0.0.1) Attacker sends ack packets to a buch of web servers with a src addr of 10.0.0.1 Servers reply to 10.0.0.1 with syn packets ...
4
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1answer
642 views

172.16.33.197, 127.0.0.1 IP addresses in visitor logs

I have a website running Apache and PHP. I see that there are visitors with IP addresses 172.16.33.197 and 127.0.0.1. These addresses do not belong to our network. I get the visitor IP addresses with ...
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2answers
155 views

IP attack by reading/writing data?

If I remember correctly there is an ICMP attack whereby you can embed malicious code and it gets read/executed, causing the problem (similar to SQL injection). Are there any further/more dangerous ...
82
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12answers
20k views

Why is it difficult to catch “Anonymous” or “Lulzsec” (groups)?

I'm not security literate, and if I was, I probably wouldn't be asking this question. As a regular tech news follower, I'm really surprised by the outrage of Anonymous (hacker group), but as a ...
6
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4answers
1k views

Why don't ISPs filter on source address to prevent spoofing?

I'm under the impression that if all the ISP's were required to filter on the source IP address of all outbound packets, that spoofing would be reduced considerably. Are any ISPs implementing this ...
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2answers
520 views

Why wireshark source ip tab lists other ip as well

I was trying to capture some packets using Wireshark. I could find a lots of ip in the source address tab. Which ip do they represent. Which all packets are visible to wireshark when I run it in my ...