WHAT VERSION OF RHEL 6 HAS PHP 5.2 FULL

1: Strict mode (failed packets are discarded), described in RFC3704.This means that the rp_filter is operational in strict mode and does exactly what it is designed for. Since RHEL 6 and its derivative CentOS 6, rp_filter, which can be controlled by kernel parameters, is set on a default value of 1. In a router it could also prevent routing packets that have a private IP as source to the internet as they obviously will never find their way back. The purpose is to prevent spoofed packets, with a changed source address, not being processed/routed further. The reverse path filter will check if the source of a packet that was received on a certain interface is reachable trough the same interface it was received. Rp_filter stands for reverse path filtering. The cause of the issue is a change in the default value for kernel parameter rp_filter. Since RHEL 6 (and CentOS 6), asymmetric routing doesn’t work anymore out of the box.

WHAT VERSION OF RHEL 6 HAS PHP 5.2 FULL

It’s clear that interface eth1 will have a higher load that eth0 and while you’re thinking that you have two full 1Gbit interfaces, the speed is limited to the speed of eth1. Packets do flow in and out from the server. For the client, it looks like everything is working normal. The above image shows asymmetric routing: a packet sent from client A to the server, enters the server via network-interface eth0 but, due to the routing, it’s routed back to client A via interface eth1 of the server. Asymmetric routingĪsymmetric routing isn’t a big problem but it can cause issues related to NAT on firewalls and it has some impact on network performance. While this causes one of the interfaces to be unavailable from the outside on Red Hat based distributions, the problems with asymmetric routing also do exist on the other distributions although it seems to work fine.

In short this means that the interface that has received a packet doesn’t respond to the source of the packet by itself but via another interface. When you’re experiencing this issue, it is most probably caused by asymmetric routing. On most other distributions, like Debian, this issue, which is caused by asymmetric routing, doesn’t seem to exist. Both IP’s will be responding to a ping from another host in the same network as those IP addresses but only one is responding to ping from another network. When configuring a Linux host running either Red Hat Linux 6, Red Hat Linux 7, CentOS 6 or CentOS7 with two network interface cards (NIC) that each have an IP address in a different network or subnet, you could end up in a situation where one of the IP addresses isn’t reachable outside it’s own network.

What version of rhel 6 has php 5.2