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2answers
68 views

OpenVPN solution/options for traffic reduction?

I am looking into VPN for the purpose of traffic reduction on the client side. CPU load is secondary. Is lzo good enough to beat the overhead malus? Are there other options to tune compression in ...
0
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2answers
204 views

SYN packets sent from one server but never arrives at destination

I am troubleshooting network problems for a client, remotely. The problem they have is that they get "connection timed out" occasionally between a web server and and a back-end search server. They can ...
1
vote
1answer
165 views

Detecting a host doing a port sweep across multiple interfaces/networks

I'm trying to set up a honey-pot like machine that would detect port sweeps from multiple networks with multiple interfaces. As an illustration, if I could set up a box with eth1, eth2 and eth3. ...
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votes
1answer
30 views

How to setup a traffic limit per user on OpenVPN?

I am setting up a VPN server using OpenVPN. The authentication method is the certificate one (different certs for client and server). The VPS has 1TB of traffic monthly. I plan allowing up to 4 ...
0
votes
1answer
44 views

What are the tools needed to best asses a load balancer?

I'm building a Paas with Docker container in the field of Networkf Function Virtualization. I need to deploy some load-balancers inside containers. I need to asses the load balancers in differents ...
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1answer
364 views

HowTo: OpenWRT routing/tunneling all traffic through an inline Snort sensor

I want all traffic that hits the OpenWRT router redirecting/ tunnelin through a dedicated Snort/Suricata machine, before it leaves the local network. The Snort/Suricata machine should act as an inline ...
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votes
1answer
252 views

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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votes
1answer
517 views

how to forward all traffic on specific interface to ip address

I have one Linux machine that have 2 interfaces. The first one is used as a default one and provides access to internet, the second interface was added as a dedicated link to send packets from tcpgen ...
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1answer
798 views

log openvpn traffic by squid

is any way to log openvpn traffic (sites that users visited)? i think because openvpn use tunnel and encrypt traffic cannot log visited websites, but in a server i saw that open vpn's users traffic ...
2
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0answers
27 views

Abnormal DHCP Android device traffic cannot be identified

Hi Serverfault community members. I've been trying to identify the source of an abnormal broadcast traffic generated by some Samsung Android devices with no success, so I ask for your help. I have ...
2
votes
0answers
540 views

curl request results in heavy load on the server

We consume an XML Datafeed by sending cURL requests to the provider's server. They do not allow us to cache, so each pageview is a new cURL request. Twice this year, our server has crashed with the ...
1
vote
0answers
23 views

How would I limit total outbound traffic?

I've had a look round and found solutions like tc to limit the total allowed bandwidth per user, but what I'm interested in is how to limit the total outbound traffic per user. I have a server with ...
1
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0answers
23 views

Network Traffic fluctuating, even with loopback

I am using iperf tool to benchmark my network interfaces on two identical machines (Dell Blade Server M620). Both have given different results. On 1st machine, I ran server and clients as: Server ...
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0answers
37 views

Empty events for AWS VPC logs?

I have an AWS VPC instance (AMI Linux), and I'd like to see the event logs for insight into its traffic. So, I can run a command as follows: sudo aws logs get-log-events --log-group-name ...