I am moving into the world of dedicated servers (from VPS). I just got a server from Serveraday.com /OLM.net.
When I was doing bandwidth tests, I found the server's inbound speed was much slower than outbound. I tried downloading a bunch of different provider's 10MB test files from the command line of my server using wget. They were all around 20-30 Kbps.
When I take those same 10MB files and serve them from my dedicated box, the results are much different. My server can push the files out at over 1Mbps.
Why would my server be set up this way, and is this normal behaviour? I sent a ticket to OLM, but their support seems to take a long time. So I figured I would bounce the question off of all you here on WHT
I'm trying to figure out an iptables rule to block certain ips for a limited duration, after which the block rule will be removed.
hits to the iptables filter while the ip is blocked should not renew the timer.
i got as far as:
iptables -A INPUT -m recent --name blacklist --rcheck --seconds 10 -j REJECT iptables -A INPUT -m recent --name blacklist --remove
but how do i blacklist an ip now ? (this needs to be done via external app and not via iptables matches/hitcounts) iptables -A INPUT -s xxx.xxx.xxx.xxx -m recent --name blacklist --set would renew the blacklist every time that ip sends a packet no matter if it is blocked or not. and also that rule would remain in iptables even when expired
22.214.171.124 still has 301 connection, any idea.
Basically, I use ddos-deflate to block ddos attack. I already set the max conection to 25. But it seems not working. all the connections over 25 have not been blocked. Did I miss something? I mean after I issue
Imagine you want a set of servers (VPSs would be a cheaper choice, that is why I am posting here) that do not have much outbound traffic but download from other servers (more or less as spiders, but I am not trying to create a web index). Disk space or memory size are not important, but port speed and monthly transfer should be as high as possible. As inbound traffic is less frequently used, I wonder if any provider offer cheaper rates if traffic is like this.
I have been searching the forums and have not found too much about this topic (a quite related post named "I want to download the Internet" or something similar did not get a conclusion).
I have 2 IPs bounded on a Windows 2003 server. These 2 IPs have different network routes (one uses network A, one uses network B). Obviously for outbound traffic I can freely choose which IP to use (I simply choose to use [url]or [url]), however I wonder if it's possible to tell the server which IP it should use for inbound traffic when I need to download something from the internet to the server?
Could you guys look and see if what I am seeing is right? They offer Global Crossing and Cogent officially. So if I use GLBX looking glass, I get this.
Trying trace from node 'Miami, FL, US' to '96.31.73.xxx' 1 126.96.36.199 (188.8.131.52) 0.761 ms 0.608 ms 2 so0-0-0-2488M.ar2.TPA1.gblx.net (184.108.40.206) 5.690 ms 5.695 ms 3 WBS-CONNECT-LLC.ae0.409.ar2.TPA1.gblx.net (220.127.116.11) 5.731 ms 5.880 ms 4 18.104.22.168 (22.214.171.124) 7.442 ms 6.667 ms 5 node1.sarorahosting.com (126.96.36.199) 15.734 ms 15.993 ms 6 96.31.73.xxx (96.31.73.xxx) 15.861 ms 15.795 ms
Now if I tracert from the VPS to the GLBX router, I get this.
traceroute to 188.8.131.52 (184.108.40.206), 30 hops max, 40 byte packets 1 node1.sarorahosting.com (220.127.116.11) 0.072 ms 0.035 ms 0.008 ms 2 18.104.22.168 (22.214.171.124) 0.731 ms 0.863 ms 1.003 ms 3 gi0-6.na21.b001841-0.tpa01.atlas.cogentco.com (126.96.36.199) 1.147 ms 1.142 ms 1.428 ms 4 gi4-1.core01.tpa01.atlas.cogentco.com (188.8.131.52) 0.818 ms 0.814 ms 0.807 ms 5 po2-0.core01.mco01.atlas.cogentco.com (184.108.40.206) 148.004 ms * * 6 po5-0.core01.jax01.atlas.cogentco.com (220.127.116.11) 5.847 ms 5.839 ms 5.872 ms 7 po5-0.core01.atl01.atlas.cogentco.com (18.104.22.168) 11.953 ms 23.819 ms 23.870 ms 8 te3-3.ccr01.atl01.atlas.cogentco.com (22.214.171.124) 11.721 ms 11.752 ms 11.787 ms 9 te8-2.mpd01.atl04.atlas.cogentco.com (126.96.36.199) 11.962 ms 11.921 ms 11.987 ms 10 ge4-1-0-390-1000M.ar4.ATL1.gblx.net (188.8.131.52) 12.252 ms 12.359 ms 12.444 ms 11 184.108.40.206 (220.127.116.11) 16.026 ms 16.061 ms 16.594 ms
I have an interesting situation on my CentOS 4 server. I have a number of virtual adapters (e.g. eth0:1, eth0:2 etc), and for some reason all outbound traffic is going through one of these, not eth0. If I go to ipchicken.com, it shows the ipaddress of a virtual adapter, not the normal eth0 adapter.
I have been looking around for information on how to set the default adapter to eth0, but I can't seem to find anything. I can't reboot yet, as it's a production server, so I have to wait for 'scheduled maintenance'. If that's the solution, I can try it, but I am sure there is another underlying issue/routine here.
Is there a way, while live, to set the outbound adapter back to eth0?
Please note, that I have only just realized this has happened. In fact, it has been this way since November. I can tell because server name stamps on Email messages sent from this server indicate a virtual domain at that IP address. I recall I had done some work around that time, which had involved me ifup'ing and ifdown'ing some of these adapters (but not eth0, or the eth0:100 adapter (if I recall correctly) that is now the default).
Also note that I have groups of eth0 adapters, such like: eth0:1 eth0:2 eth0:3 eth0:100 eth0:101 eth0:102
It's the eth0:100 adapter that is now the default.
It appears Comcast is now blocking port 25. As a result, I can't sent outbound email via my dedicated server. They had me change to port 587 for my comast email account, but that doesn't solve my not being able to send outbound from my dedicated server.
Is there anythighn I can do (like change the post my mail server uses to 587) so that I can send outbound mail from my server with outlook (over Comcast connection) or am I just stuck now with using web mail?
i have installed a new mail server i.e. SmarterMail, and from past few days i have devoted much time to find "How to create Out Bound rules in Smarter Mail?" but unfortunately i ended up with no solution, hence here i am seeking help from all the member of WHT for my two questions:
1) Can we create an out bound rule in smartermail?
I'm not sure if this is the right place to be posting this, but at our hotel, we have wireless routers (Linksys) that any of our clients can use to connect their laptops to the internet. We have been getting reports from our ISP that spam has been coming from our external IP address, so I wanted to know what people would recommend as ways to combat either our computers or any of our clients' computers from sending out spam. The internet is connected through a firewall/server computer running linux. I thought about blocking port 25, but I'm sure we would have clients complaining about not being able to send any mail.
I tried a little searching both in Google and on here but this is probably going to be a private or member-based thing anyway.
I've gotten a couple comments that some of my outbound personal mail is ending up in spam folders. I think it's almost completely limited to having Outlook (or Express?) as a client... which I assume doesn't even do network-based lookups. Nonetheless I don't seem to be on any blacklists, and running it through my own spamassassin filter comes up basically zero score. But the fact that more than one person has had the problem concerns me greatly. Also, I haven't seen any significant reason why the content itself would trigger anything.
I realize a public spam test service would basically be a "testing ground" for spammers to evade detection, but there's obviously legitimate uses as well... is there such a tool somewhere? Thanks for any advice. Public information sharing is key to a forum, but PMs are welcome in this case.
some Chinese forums hotlinking images from my site and I even delete those images they keep sending me huge amount of http requests to my hosting server and eating 800mb of memory and upto 1GB cause server crash
I tried to block incoming referrer traffic from those sites using htaccess but it didn't work , I still see their http request on my server logs and memory keep goes high , am not sure my code is the right
how can I block these http request from these domains , what is the right htaccess code , I use DirectAdmin panel by the way
I'm currently experiencing a lot of IP's starting with 200 and 201 (from Brazil) some IPís have over 200 connections. I have APF installed and want to know how to block a block on ip's if this is possible. IPS: 200.11.******* 201.*******