Questions tagged [ip]

The Internet Protocol (IP) is the main protocol for sending packets accross the internet. It belongs to the internet layer in the internet protocol suite with the variants IPv4 and IPv6.

33 questions with no upvoted or accepted answers
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6
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1answer
511 views

IPSec Host-to-Host VPN (RedHat) needs IP Forwarding?

We would like to build a Host-to-Host IPSec VPN (both RedHat Linux). Is it really mandatory to activate IP Forwarding which is by default deactivated because of our security policy (/etc/sysctl.conf ...
4
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1answer
591 views

Suspicious Skype IP connection

I'm posting this three weeks after a malware and keylogger scare that happened through Skype, and my own negligence, which resulted in a fresh install of Windows 7. Everything's running and clean, ...
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0answers
123 views

Hacked Raspberry-pi server

My internet provider doesn't let me open my ports, it's an optional service, and even when they finally said over the phone that I was allowed to open the ports I was still not able to. So I was ...
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0answers
74 views

Bought used IP security camera, should I reflash the firmware?

I bought an used IP security camera on eBay, I dont know who was the previous owner. I've always thought that we can't trust 100% any firmwares/OSes that were been installed or used by someone else. ...
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0answers
67 views

How to tell if my hosting data is valid or a fake copy

I'm investigating an issue where we have consistent performance issues with our company web host and bad statistcs data in our hosting console. Our hosting provider console says our IP address is one ...
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0answers
604 views

Attacking XAMPP Server with Burp Suite. How do I find victim's IP Address?

I am doing an online course on web penetration testing where the instructor tells us to install Kali Linux on one virtual machine (the attacker), and any other OS (I chose Manjaro Linux) on another ...
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0answers
180 views

VPN chain in one machine without VM natively

Is it any way to make VPN chain in one machine (MAC or WIN) without VM natively (L2TP/IPsec)? I need this for obtain an extra layer of security. For example - if one VPN turns off I still have ...
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0answers
109 views

Moving Target Defense implementation in context of SDN

I need to demonstrate MTD for a project in context of SDN by writing logic for the SDN controller. The logic could be as simple as creating a new Virtual IP every n seconds. However, i would like some ...
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0answers
185 views

Web/search engine spider on local network?

I was setting up a test webserver on my local network earlier, and whilst sorting out the firewall I noticed the following in the log (/var/log/ufw.log - I'm using UFW on Ubuntu 14.04): Jul 9 14:17:...
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0answers
55 views

Migration from TDM to All IP: any security issues?

My phone operator is slowly abandoning TDM (Time Division Multiplexing) to replace it with IP connections. What are the security risked related to this change? will all the phone line be like in a big ...
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0answers
165 views

ARP poisoning question

I'm writing a program that detects ARP poiosoning. My question is: How can I b sure my LAN hasn't been poisoned? Yes, I can use my settings and find the IP address of the default gateway and yes I ...
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3answers
1k views

Is it possible to find email sender who has hidden their IP address in the header?

After someone has hidden their IP address so that it doesn't appear in the header of an email, is it possible to find the sender via another method?
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88 views

External IP address in router UPnP settings Whatsapp - UK Ministry of Defence IP Address?

I was fiddling with my router's UPnP settings and found this Why is an external IP address showing here? I also did a reverse IP search and to my surprise the IP 25.54.27.39 showed "UK Ministry ...
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1answer
56 views

Pentesting Webserver Dead End (MySQL White Listing Bypass)

I am currently pentesting a webserver running MySQL, managed to obtain its db configuration (w/ login credentials) but the hostname is in a Local Area Network. The server has white listing enabled, so ...
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0answers
68 views

Can installed applications bypass vpn and know your real ip?

Adding that the vpn has an hard kill switch enabled that doesn't allow connections other than through it.
0
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1answer
95 views

DHCP Interception

When a new client is trying to get a new IP from the DHCP server, it broadcasts the discover message. And also DHCP broadcasts the offer. And they use the transaction ID to communicate without the IP ...
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0answers
40 views

IP traffic use cases, which could be broken by egress filtering

Egress filtering (blocking potentially spoofed IP packets with source IP outside the sub-network) is breaking multihoming. However, what are other "normal", residential IP connection use cases which ...
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1answer
206 views

Thought process behind firewall design

I'm preparing for an introductory information security examination in university and this is one of the tutorial questions on Firewall design. My concerns for the provided solution is how to define ...
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0answers
28 views

How do I white list domain in ASG's?

I need to whitelist https://hooks.slack.com in Application Security Group (ASGs). As I have understood ASGs are static and they don't resolve DNS. Then how do I whitelist https://hooks.slack.com ...
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0answers
197 views

VDSL modem getting probed?

My ZyXEL VMG8924-B30A VDSL modem recently had these alerts in its log. The WAN IP address of the modem is 10.225.205.128. There was nothing like this before 1 May. What is this? 2019 -05 -01 T16:05:...
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0answers
39 views

Retrieve hostnames for IP addresses to connect to HTTP services, when no (reverse) DNS PTR records are available?

I'm conducting a penetration test, where I'm facing the following problem: After having retrieved a set of IP addresses through tools like whois, I cannot successfully connect to the HTTP-based ...
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0answers
106 views

Mediafire Privacy

In their Data retention policy Mediafire states about the download records: These are short term logs of who accessed and downloaded content from whom’s account. We keep this for the minimum amount ...
0
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1answer
199 views

ARP poisoning NAC

I need some help in understanding the technique of Genians/Trustwave NAC regarding ARP poisoning. As seen here Bypassing Trustwave NAC, it looks like a good method, but I don't simply get it. With ARP ...
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0answers
61 views

Time of using proxy-servers?

For example using different proxies on some services-sites. Sometimes using e.g. tor, some connections change randomly. For which time-frame are such servers avaiable if we pick up some of such ...
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0answers
2k views

Implications of IP Address as Subject Alt Name in certificates

Are there specific known negative security implications of including the IP address of a server as a Subject Alternate Name in the server's certificate?
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0answers
1k views

Someone or something tried to login to my Gmail using IP address of my shared hosting

My Gmail told me someone tried to login with the correct password. But Gmail blocked it because the IP address used is different from my IP address. When I looked up the IP address that tried to login ...
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0answers
376 views

The simplest way to emulate TCP-IP protocol violation / anomaly attacks

Reading up upon security on web applications I did not found that much info on TCP-IP and in particular HTTP/UDP protocol violation / anomaly attacks. My question: What is the general mechanism of ...
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1answer
53 views

Is Cross-Domain IP tracking a security feature?

We're using a cloud based web security (proxy) service which basically takes our web requests, scans them and NATs these requests to their public IP addresses. NAT is being done on a per-session basis,...
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1answer
558 views

Detect Proxy and Tor exit nodes from an IP in python

I have a database (hadoop) of the users who access my website (their IPs) and i want to check if those users either use proxy networks or the TOR network and block them. I also want to differentiate ...
-1
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1answer
383 views

How to create SSL cetificate from Synology from Letsencrypt?

There is option in New Synology to create SSL for local or remote host. But when define a subdomain it's give back can't verify to Host/ connect. My question is, is that only possible when Synology ...
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2answers
6k views

Kali Linux/Metasploit in VirtualBox - Issue with ports

I've been attempting to get port 4444 to open these past couple of days. I finally figured I'd try to get it working on my Windows machine first and I finally got it. Now, no matter what I do in the ...
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1answer
78 views

How can I choose the IP sites see from me?

I'm wondering how can I change and select the IP address sites see from me so I can create multiple accounts from the same device?
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2answers
188 views

Get IP address of camera

Is it possible to get the global IP address of a nearby camera? For example, an IP camera is connected to a network, but you are not on that network, and cant get access for whatever reason) but you ...