10.6.2 Breaks Remote Login and Ping

Hi,
I've just upgraded my MacBook to 10.6.2. The upgrade went successfully but now I can't ping my laptop. Also, I can't log into it via SSH. I've tried disabling the Firewall but this has no effect. I've also seen exactly the same problem with a Mac Mini...
Has anyone else seen this and found a way around it...?
J

I came on here to post the exact problem.
I had reformatted my computer to reinstall 10.6. (It's a long story, but basically my installation was bad.) Anyway, I had logged into my computer via SSH to install system updates and iLife '09 from work. I did the first round of updates, restarted, and did the second round along with iLife '09. After I rebooted, I couldn't reconnect. I thought my computer had died. I came home expecting a failed hard drive or something, but everything was fine.
I've tried turning SSH on and off, firewall on and off. My router and settings are fine -- clearly it was either the second round of system updates or iLife '09. Any ideas?

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NOTE
This
response contains a reference to a third party World Wide Web site. Microsoft is providing this information as a convenience to you.
Microsoft
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I'm not exactly a UNIX expert, but I need to be able to remote login to my PowerBook. The problem with enabling ssh is that as soon as I'm on campus, all kinds of nefarious hosts try brute force attempts to crack my password. I've heard that public/private key logins are the answer, and I've managed to get the public key in the right place on my PowerBook (the private key resides on my iPhone, from which I'll be logging in). But I have two questions:
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2) When I use my private key, I'm asked to enter the password for the key -- ssh isn't properly storing that password. I've checked permissions, but how can I get ssh to store that password, as it should?

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Summary
Symptom
Remote login in SM51 by double-clicking R/3 instances fails
Solution
You can use transaction SM51 to log in to another application server using RFC, without entering a password. Server "A"
Server "A"                                          Server "B"
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GUI
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Best Regards,
Erick Ilarraza

Hello, thanks a lot for your replyes.
Abhijeet Siras, the command /etc/ping <host> works prefectly.
Sergo,
Exactly we have 3 host each one with 4 dialog instances. 1 host with 2 dialog instances and one host with the central instance.
Not all instances have this problem, only the following combination:
     Origin                     Destination
host4_SID_01    - >     host1_SID_01
host2_SID_03    - >      host3_SID_03
host1_SID_01    --> host3_SID_01
host1_SID_02   -->     host3_SID_02
host1_SID_03   -->     host3_SID_03
host1_SID_04   -->     host3_SID_04
host2_SID_01   -->     host3_SID_01
host2_SID_02 -->     host3_SID_02
host2_SID_03 -->     host3_SID_03
host2_SID_04 -->     host1_SID_04
host2_SID_04 -->     host3_SID_04
host3_SID_04 -->     host1_SID_04
host4_SID_01 -->     host1_SID_01
host4_SID_02 -->     host1_SID_02
host4_SID_02 -->     host2_SID_02
host4_SID_02 -->     host3_SID_02
The problem is between *_NUMBER to *_NUMBER!
For example from Dialog Instance 3 running on host 2 to Dialog Instance 3 running on host 3
For example host4_SID_01 means the Dialog Instance 1 running on host 4.
Best Regards,
Erick Ilarraza

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I am trying to remotely login to my Sisters computer located in India from U.S...
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Hello..
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10.6.2 Breaks Remote Login and Ping

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