Understanding my recurrent network connectivity problems
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From: H.S. on 26 Jun 2010 00:30 On 25/06/10 06:07 PM, Merciadri Luca wrote: > H.S. wrote: >> On 06/25/10 14:44, vr wrote: >> >> >> Mac address is usually an issue in cable internet connections. In any >> case, router/modems usually have a feature called "clone mac address" >> exactly for this kind of situation, it clones the mac address of your >> hardware and shows that mac address to the peer on ISP's side. >> > Sad to need to go so far to enjoy something you already pay for. But, > well, as I said earlier, I had never had any problems with my ISP > before. Thus, except if they radically changed their policy... > Yes. I am pretty sure they would let you know before changing stuff so drastically. I suppose you can safely rule out this possibility while debugging your problem. -- Please reply to this list only. I read this list on its corresponding newsgroup on gmane.org. Replies sent to my email address are just filtered to a folder in my mailbox and get periodically deleted without ever having been read. -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/i03ve1$g24$1(a)dough.gmane.org
From: Merciadri Luca on 26 Jun 2010 03:20 Andrew McGlashan wrote: > Hi, > > Well if you have a LAN port from the modem to the "switch", then you > connect PCs to the switch -- one of them can do a PPPoE login (not > PPPoA) and only that one machine will be on the Internet. You mean that if some WAN is connected directly to the switch (!= router), the switch is going to share (in some way) the Internet connection to its other LAN ports? > > WAN ports are used on routers and routing b/w the WAN and LAN is taken > care of with the router doing the PPPoE login and NATing the LAN. > Ok. -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ I use PGP. If there is an incompatibility problem with your mail client, please contact me. A half truth is a whole lie.
From: Andrew McGlashan on 26 Jun 2010 05:40 Hi, On Sat, June 26, 2010 5:10 pm, Merciadri Luca wrote: >> Well if you have a LAN port from the modem to the "switch", then you >> connect PCs to the switch -- one of them can do a PPPoE login (not >> PPPoA) and only that one machine will be on the Internet. > You mean that if some WAN is connected directly to the switch (!= > router), the switch is going to share (in some way) the Internet > connection to its other LAN ports? No, unless you have two network cards in the PC and setup routing there with other machines connecting to the switch using the "routed" network. In this case you will have two cables to the switch from the routing machine. What I meant was that you could get "raw" access to the bridged modem and do the PPP login on any one client machine and ONLY that machine will have Internet access. -- Kind Regards AndrewM Andrew McGlashan Broadband Solutions now including VoIP -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/375ee237d488ce5cb17ca3d5eb079252.squirrel(a)www.affinityvision.com.au
From: Merciadri Luca on 26 Jun 2010 05:50 Andrew McGlashan wrote: > Hi, > > On Sat, June 26, 2010 5:10 pm, Merciadri Luca wrote: > >>> Well if you have a LAN port from the modem to the "switch", then you >>> connect PCs to the switch -- one of them can do a PPPoE login (not >>> PPPoA) and only that one machine will be on the Internet. >>> >> You mean that if some WAN is connected directly to the switch (!= >> router), the switch is going to share (in some way) the Internet >> connection to its other LAN ports? >> > > No, unless you have two network cards in the PC and setup routing there > with other machines connecting to the switch using the "routed" network. > In this case you will have two cables to the switch from the routing > machine. > > What I meant was that you could get "raw" access to the bridged modem and > do the PPP login on any one client machine and ONLY that machine will have > Internet access. > > Ok. Sorry for not understanding this directly. You're right. -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ I use PGP. If there is an incompatibility problem with your mail client, please contact me.
From: lee on 26 Jun 2010 10:30
On Sat, Jun 26, 2010 at 09:11:11AM +0200, Merciadri Luca wrote: > > > According to my pings (see last messages), the router looks like > overwhelmed, and is thus completely crappy. I don't know why it happens > now. I am still wondering why. To figure this out, it's a good idea to simplify things first: * use static IPs on all the computers connected to the LAN and turn off the DHCP server in the router if possible * connect the switch to the router as the only device connected to the router and plug all the computers into the switch instead After these steps, see if the problem persists. If it persists: * unplug the router, plug your computer directly into the modem, set up your computer for making the connection to your ISP * plug the switch into a second network card in your computer, the other computers connected to the switch * set up a firewall on your computer, using, for example, shorewall, and configure it so that your computer basically replaces the router * set up a name server on your computer to operate as a name server for all the computers on your LAN See if the problem persists. If it does, replace the modem. Installing squid on your computer and configuring shorewall so that your computer acts as a transparent proxy for all the computers on your LAN is a good idea. You might want to go further and set up your computer to provide email services to the computers on your LAN. Setups with dyndns --- if you can't get a static IP --- work reasonably well to receive your email directly. That frees you a great deal from the usually ridiculous limits email service providers impose on their users and greatly speeds up and easyfies things for the users on the LAN. DHCP with these routers usually sucks, as well as the nameservers built into them do. -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/20100626142804.GB6896(a)yun.yagibdah.de |