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not knowing your specifics i would separate servers in their own vlan. also I would separate the devices that create a lot of trafic from the rest of servers and workstations in their own vlan. and finally move workstation to their own vlan or two. you have 3650 and that gives you lots of...

did you set switchport trunk encapsulatiom dot1q on a trunk port on cisco? also I would create another vlan on booth devices instead of using vlan1

The default port for IMAP is 143 and the default port for IMAP over SSL is 993 blocking these two ports you block most of IMAP traffic

I believe cisco provided QoS MIBs and any decent SNMP collector should be able to handle it

in production we use netscreen ssl vpn boxes and everyone just loves them: admins and users. the term serv client (java or activex) is nice. It uses native windows client when possible and emulates it when it's not available. the speed is very good as long as the connection speeds on both ends...

There is a very nice tool called nTop. it runs on *nix and windows. Combined with SPAN on cisco it can provide a good result

just schedule a job for that time and run something like C:\WINDOWS\\system32\\shutdown.exe -r -t 01. for more shutdown.exe options just type shutdown /? at command prompt

What is "mediamarketers1"? you probably need to change it to ns1.mediamarketers.com. [alex@s ~]$ dig lhhs.org any ; <<>> DiG 9.2.4 <<>> lhhs.org any ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36803 ;; flags: qr aa ra; QUERY: 1, ANSWER: 4...

If you are asking about their SSL VPN product than it's very nice and very capable. Much easier to leave with than with classical IPSEC based VPNS.

That is because your MX records points to mail.your-domain.co.uk but reverse resolution of the yy.171.206.211 is server206-211.other-domain.net

If all you need is to move web servers and mail to a new IP block and you have some time to prepare. You can change TTL (time to leave) for the domain you move. Make it, for example, 1 hour. You need to give it some time for a change to propagate thru the internet tho. At least the half of the...

simple but might be not very flexible aproach is to split your network to 2 VLANs with 2 different gateways for each vlan I do not know if sonic firewall is capable of load balancing between two uplinks. If it can load balance I would skip the round robin and would keep each session on the same...

Actually, Yahoo and I think most of the other web based emails providers do include sender's IP address in the headers. It looks something like Received: from [x.x.x.x] by webyyyyy.mail.yahoo.com via HTTP;

here is a MS KB article that answers your question http://support.microsoft.com/?kbid=280061

The simple way of doing that is to create secondaries on the new box. make sure that everything is fine with the server and zones. and than convert these zones type to primary on new server and secondary on the old one. to do it quick you can use dnscmd.exe sample steps are: -dnscmd y.y.y.y...

what are you trying to achve?

If you use a zone files. the transition should be very easy regardles of platform. If you know and like windows and didn't have any major problem with it, than stick with it. if you do not like windows - use whatever you like. that's simple! :)

how the AD would know if the PC is "good" or "bad" without IP assigned? The AD uses IP to communicate and it's a requred for AD to run. You probably should be able to play with reservations and MAC filters, but I think it's road to a management nihjtmare

you need a router to communicate between two diffferent subnets. If your 3900 is not a router itself that knows how to tallk to both networks, than you need to tell it where the router thet knows how to do that is. That is done by setiing the default gateway

If a request comes as a broadcast, than the client is on a local subnet. If it comes as an unicast with source IP from the clients subnet, than the client will be given IP from the that subnet.