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Category Archives: Firewall/gateway

12Nov/14

Centos VLAN trunking

November 12, 2014Firewall/gatewaycentos, trunk, VLANpityu

Centos can accept and easily handle VLAN trunks just as same as doing Access mode. Let’s suppose that you have a WAN interface in access mode (so to say, it’s a plainRead More…

07Oct/14

Blocking torrent with iptables (or any other P2P)

October 7, 2014Firewall/gatewayblock, iptables, torrentpityu

Nowadays, iptables support a so called Layer 7 filtering, which makes things signifficantly easier and more effective whem it comes to blocking torrent with a help of iptablesm or just filtering thoseRead More…

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07Oct/14

Blocking facebook with iptables (https too)

October 7, 2014Firewall/gatewayblock, facebook, https, iptablespityu

Some routers can block Facebook (or any other page) with an URL keyword. Yet, this becomes a problem when the page reverts to a secure connection (https). Lately, iptables supports so calledRead More…

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07Aug/14

Persistent routes in Centos

August 7, 2014Firewall/gatewaypityu

Persistent route (static, but not a default route) Say, you have route like this: route add -net 192.168.210.0/24 192.168.1.3 dev eth1 And you want to make it persistent (and oviously static)  –Read More…

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22Jul/14

Web based bandwidth monitoring on a Linux gateway

July 22, 2014Firewall/gatewaybandwidth, linux, monitor, webpityu

I often need to know how much bandwidth is my linux gateway/router box using, specially if there’s any P2P traffic (torrents) and from which IP address on the LAN is it coming.Read More…

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