Ok, I'll try and explain this clearly....bcos it's buzzing round in my head and not making any sense at the moment (too much staring at the screen and too much caffeine....)
I have several SME 6.0 servers around the country that I manage. Between 2 of them there is some sort of weirdness going on - they can't talk to each other.
Both are SME 6.0, with the same contribs, and set up the same (as server/gateways on ADSL with the same ISP).
The problem is that one server can't see the other - they can't connect via http, ssh, smtp....anything!
Pings and traceroutes both fail.
However, both servers are accessible just fine from (seemingly) anywhere else on the net - it's just between the two of them that there is a problem!
I only noticed this after a reboot of one of the servers, so i think it's a problem with that particular one, the last things installed on that server were Xoops then ClamAV.
I'm thinking it's gotta be xinetd or some other access control system, but could that affect traffic in both directions between the 2 servers??? And how could that stop basic IP tests like a ping?
Aaargh. Even just writing this out makes me think - there can't be any way that a server config is stopping the ADSL routers from replying to pings....that's one area where I'm fuzzy - I have configured the routers at both ends to pass ALL traffic through to the server.... so I wonder if that means ICMP packets are being passed thru to the server as well?
Anyway....hoping someone can suggest where to look or what to try
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