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2
votes
2answers
557 views

If I block users with a blank IP address, will that affect innocent, non-technical users?

I run a website with an anonymous commenting feature. Users can flag each other for abuse; flags are tied to an IP address (grabbed via PHP from $_SERVER['REMOTE_ADDR']). I've noticed that 99% of the ...
-2
votes
2answers
186 views

My bulk email company supresses all hard bounces -even if they get their IP's blocked

I send out about 500,000 emails every week. I have been sending the list out for about 1 year. But in conversation, I was advised that the company sends in a shared IP manner. So my list goes out ...
0
votes
1answer
233 views

Blocking all RIPE Addresses in Server 2008?

Our datacenter has recommended we block all RIPE IP Addresses on one of our machines. It is constantly being DDoS Attacked everytime the null routes are lifted, so I am not sure how this would help, ...
2
votes
3answers
9k views

How to create a group policy to block facebook or any website in windows server 2008 r2 domain

How do I create a Group Policy that will prevent my users from accessing specific web-sites? I am at the 2008r2 functional level.
2
votes
2answers
1k views

Block IPs that try to exploit common webapp vulnerabilities

Is there an application that goes through the nginx logs and blocks IPs that made requests for common webapp vulnerabilities? I have an nginx web server that serves only static content. I routinely ...
1
vote
1answer
754 views

Allow Only US Traffic (Server 2008 R2)

I'm trying to setup Windows Server 2008 R2's firewall so that it blocks all traffic except traffic originating from US IPs. The current inbound firewall policy is setup as follows: Block a few ports ...
1
vote
2answers
543 views

How to ban potential hacker IP Addresses from Port 80?

I am hosting a bunch of PHP web sites on a web server. While I have taken all precautionary mesaures to protect all ports, Port 80 specific attacks continue. I want to ban any IP Address that taken an ...
1
vote
2answers
603 views

Automatically block IP in apache2 - it is possible?

Is there are a way to automatically block IPs with apache2. For example, if we get a lot requests (100s) for non-existing pages (or known patterns, like CHANGE_LIST.txt, etc.) to block that IP and add ...
5
votes
3answers
6k views

How to block a Countries IP range with a Cisco ASA?

To be more specific I have a request from a client to block China's IP range. I know how to do this. I would use the IPs from https://www.countryipblocks.net/e_country_data/CN_netmask.txt and make a ...
2
votes
4answers
248 views

Blocking attacker's IPs: What options do I have?

A website of mine is being attacked by some IPs. I don't even know if it was a ddos yet, I only know that it has been filling my application's logs for longer than a day, and then the server crashed ...
1
vote
3answers
2k views

Attempt to access SQL Server with the user SA

I'm suffering an attempted invasion by brute force. A bot is trying to figure out the sa password. How do I restrict logins 3 attempts in SQL Server? Moreover, I would like to block an IP, how can I ...
3
votes
3answers
107 views

Banning people from accessing my sites

I was looking at my apache logs and saw this: [Wed Feb 02 00:56:54 2011] [error] [client 93.190.64.23] File does not exist: /srv/www/dogself.com/public_html/db [Wed Feb 02 00:56:54 2011] [error] ...
0
votes
2answers
450 views

Should I use my web server firewall to block all traffic from IP addresses that seem to be attempting attacks?

I’ve recently set up a tiny Debian VPS for hosting a couple of personal sites. In the Apache access logs, I’ve noticed quite a few requests for URLs like /phpMyAdmin-2.6.4/scripts/setup.php coming ...
2
votes
2answers
3k views

Apache deny from CIDR range but allow from IP within that range

I am using a long CIDR blacklist to block several countries from a site, but I need to allow specific IP addresses within the blocked CIDR ranges. Here's an excerpt of my conf file (this is the order ...
-1
votes
2answers
410 views

What are my usable IPs?

I bought the IP address block 216.231.128.32/27 and the machine has the Default Gateways already setup as 64.79.102.162 and 64.79.102.193
0
votes
2answers
146 views

LAN-intern solution for server-side auto-IP-block

We got the problem, that our web server provider blocks our static IP address automatically, when we reach 200 simultaneous connections in the time window of 300 seconds. I'm running an Ubuntu server ...
4
votes
3answers
763 views

Blocking facebook on company network

Our ISP forced us to use their router that doesn't have any option to block certain URL/IP like our 3Com OfficeConnect router has. Is there any other easy way to implement this without an intelligent ...
4
votes
10answers
2k views

Block facebook even in the case users get their hands on tor, freegate and similar applications

I've been using, happily, opendns to block facebook on my network. Then I started thinking about tricks to circumvent this block and, of course, I've read here on serverfault how to block the facebook ...
3
votes
1answer
2k views

Block A City From Visiting my Website [closed]

I understand it is possible to block a country from viewing my website using apache, .htaccess. I was wondering if it is possible to block everyone from a specific City (namely the city of Flower ...
0
votes
2answers
30k views

Blocking YouTube website using WiFi and/or DSL Router

Is it possible to block certain websites e.g. YouTube on all computers without having to configure something on each and every computer. I have access to WiFi router and the DSL router. Is there any ...
1
vote
2answers
253 views

Block an IP-address which tries to download entire website

I need to block an IP-address which tries to download my entire website. Currently I've blocked it using iptables. Is there any way to block an IP automatically if it's trying to request to many ...
6
votes
3answers
2k views

Hundreds of connections to a server, just from opening 10+ tabs in IE8?

We have private forums running vBulletin, and we've gotten complaints from a customer that has trouble accessing them when he opens a lot of tabs. The last time he called, it was determined that our ...
2
votes
4answers
10k views

Finding all IP ranges belonging to a specific ISP

I'm having an issue with a certain individual who keeps scraping my site in an aggressive manner; wasting bandwidth and CPU resources. I've already implemented a system which tails my web server ...
0
votes
3answers
7k views

check if a domain is blacklisted / blocked

Some clients report to us that our site is not accessible through their internet connection. We suspect our site is wrongfully blocked by some security software/firewall/public blacklist. How can ...
1
vote
3answers
678 views

Blocking an IP range without using .htaccess

I have a WordPress blog that I am hosting using NearlyFreeSpeech.net. Recently, Russians found it and have been comment spamming me. I don't want to have to trash 30+ Cyrillic comments/day, and I ...
2
votes
3answers
3k views

Windows Server 2008 firewall rules order problem

I have one rule that opens FTP port for all connections. I have second rule that blocks ALL connections on ALL protocols for some IP's. However, connections from those IP's that are blocked can ...
3
votes
3answers
751 views

What is better for an IP ban? At firewall (shorewall) level, or at IIS level?

I have a spambot that likes to spam my websites. I mailed to abuse@isp, but he ignored me. Attacks always come from the same ip, and i used IISIP to add the spammer IP to all of my websites. I am ...
-1
votes
2answers
1k views

Fail2ban for Windows 7?

My server is getting hit pretty hard by (what appears to be) script kiddies in China. I'm just looking for some thoughts/ideas on how to potentially setup some type of Fail2ban proc?
0
votes
1answer
814 views

Per client DNS server assignment using Pfsense

I have a network where pfsense is the gateway. There are two sets of clients that I want. One where there will be some restrictions to the network (example, IM being blocked) and one network where ...
1
vote
2answers
2k views

Can IIS automatically block IPs based on certain queries?

Can IIS7 automatically block IP addresses if certain queries are tried against my server? Like, is it smart enough to figure out that it's getting spammed by similar requests from the same IP under a ...