First thing switch to snap you'll find their help desk is more helpful and their service is top notch. On 6/06/2015 9:11 pm, "Fraser McGlinn" <[email protected]> wrote:
> Hi Steve, > > Have you checked the MTU and tcp-mss? This smells MTU related. > > Generally speaking most DSL’s should be either 1492 or 1500 bytes. So to > check this do the following: > > ping -M do 8.8.8.8 -s 1464 #check if its 1492 bytes > ping -M do 8.8.8.8 -s 1472 #check if its 1500 bytes > > Remember the size value is the payload size so this excludes the IP header > (20 bytes) and ICMP header (8 bytes). > > Cheers, > > Fraser > > > On 6/06/2015, at 3:00 pm, steve <[email protected]> wrote: > > > > Hi folks, > > > > Am nearing wits end... been away on hols for a month and my network > performance has plummeted. > > > > The best way of describing the problem is that you need to refresh a web > page before you get any content. In addition, bulk loading across a VPN ( > eg scp ) fails regularly. > > > > Basic design of network: 'firewall' server runs fail2ban and links > upstream ADSL to local wireless and wired subnets. It also provides DNS ( > caching server ), DHCP, OpenVPN etc services. > > > > I initially thought it was a DNS problem, and have migrated from the > local ( Voda ) DNS servers to OpenDNS, having briefly tried Googles > resolvers on the way. No improvement. > > > > Any thoughts on what I can try to identify the real problem? My thought > is that the GCSB are involved somewhere along the line, but as a SysAdm I > am paid to be paranoid! > > > > Cheers, > > > > Steve > > > > -- > > Steve Holdoway BSc(Hons) MIITP > > http://www.greengecko.co.nz > > Linkedin: http://www.linkedin.com/in/steveholdoway > > Skype: sholdowa > > > > _______________________________________________ > > Linux-users mailing list > > [email protected] > > http://lists.canterbury.ac.nz/mailman/listinfo/linux-users > > > _______________________________________________ > Linux-users mailing list > [email protected] > http://lists.canterbury.ac.nz/mailman/listinfo/linux-users > >
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