Chris Berry wrote: > We're using MS ISA server as our firewall. In accordance with their > > best practices recommendation I've put it on a dual-homed machine and set > > up only the external interface with a default gateway. Our internet > > connection is working well, and as far as I can tell reasonably secure. > > However we can't connect telnet traffic, nor can I ping internet sites, > > even though I have rules configured that should allow this. > > Previously all of this worked but people without a proxy client could > > still connect to the internet which we didn't want.
Yash >>> Might be you have blocked icmp traffic at your proxy server. So make sure that you are not blocking any traffic on proxy. Moreover you can debug by flushing all rules at your Firewall and then add one by one and then check which rule is blocking the icmp packets. > I might be able to > > reconfigure the routing tables to allow that kind of traffic but I'm not > > sure thats the right solution. My terminal emulator program doesn't > > natively support proxies. We're on a very limited budget so any solution > > I find probably has to be free. Does anyone have any suggestions or do > > you need more information?
