Questions tagged [traffic-filtering]

Traffic filtering allows a device to apply security restrictions to network traffic. Filtering can be done on many levels but the most common are TCP, UDP and IP filtering.

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Ingress filtering in Linux traffic control: Redirect traffic to IFB device

I have an openwrt router and I want to shape incoming traffic in order to classify all the traffic addressed to a certain IP address in my home network as low priority. For that purpose I want to ...
Dani Camps's user avatar
2 votes
2 answers
436 views

How to stop a site from redirecting to yours?

One of our competitors recently shut down. Instead of just taking their site down, they decided to redirect all their traffic to us with a 302 redirect. All of the traffic is redirected to us with the ...
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shape voice linux traffic using tc

How to set up a traffic control policy so voice traffic has maximum bandwidth of an specific interface? I tried tc qdisc add dev $WIFI handle 1: root tbf rate 10mbit burst 32kbit latency 10ms but how ...
user3778640's user avatar
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Traffic Control - Searching clsact filters by parent ID

According to net, sched: add clsact qdisc you add filter on ingress and egress after adding clsact,e.g. ➜ tc qdisc add dev foo clsact ➜ tc qdisc show dev foo ➜ tc filter add dev foo ingress bpf ...
Maciek Leks's user avatar
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Traffic Filtering between Security Zones

I have an organization's network, containing 4 zones: inside, outside, DMZ1 and DMZ2. DMZ1 contains external-facing servers - DNS, WEB and Mail servers. DMZ2 hosts internal servers- Radius, DHCP, ...
Student777's user avatar
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Corruption using linux traffic control (tc command)

I am kinda new to doing traffic control using Linux tc commands. So i am doing some hands-on on introducing network delay, packet loss and corruption etc across two hosts in the same network. The ...
Pranooy's user avatar
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Filter/Analyze virtual machine traffic on another physical machine

Consider a host machine running multiple virtual machines. Hypervisor is most likely KVM with libvirt. The host machine should be connected to some firewall or switch for filtering/analyzing traffic. ...
cloudtest's user avatar
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How to make a IP Address Connecting to your DNS Server use another DNS Server with Conditions

As you can see, the Title is quite a mouthful but i don't exactly know what to call it but what it is.. PC1 (External):PC2 (Local): IP: 41.1.2.3 DNS: 168.5.5.5 IP: 41.4.4.5 DNS: 168.5.5.5 ...
Paul's user avatar
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Send received mirrored traffic using iptables to docker application?

I have a setup that receives mirrored traffic from many IP addresses on my network card (eth0). I wanted to send the received packets destined to a particular IP address(say 8.8.8.8) to a docker ...
n00buser's user avatar
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1 answer
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filter with iptables incoming fraffic from VPN

I have set up a VPN to a private service provider via OpenVPN. This setup is using the VPN as default gateway. It all works fine but when I try to apply some basic iptables rules to filter traffic in ...
rs232's user avatar
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Inspecting TLS/SSL passing in/out of a network without specialised device?

At the moment I'm managing a small home office setup - a few PCs and a soft open source x86 *nix based router. I'd like to move traffic scanning / inspection onto an edge device. The motive is to ...
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Spam Traffic, DDOS Attack & Server Crashing

I am running phpfox application in my server under my main domain name fetlock.com and I am getting large amount of spam and also suffering from DDOS attacks from multiple IP addresses. My server ...
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Trouble using net_cls control group in tandem with tc for packet filtering

I'm having some trouble limiting network bandwidth using the net_cls control group in conjunction with the linux traffic controller (tc). I think I might just be confused about how I'm writing the ...
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