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Forum Discussion

kridsana_52318's avatar
kridsana_52318
Icon for Nimbostratus rankNimbostratus
Sep 22, 2016

F5 11.5.4 SSH issue

Hi   Did anyone have a problem with 11.5.4 HF2 ?   I've create SSH virtual server and pool member is also port 22   But "some" client can't access this virtual.   I didn't see known issu...
11.5.4
application delivery
BIG-IP
LTM
security
ssh
tatmotiv's avatar
tatmotiv
Icon for Cirrostratus rankCirrostratus
Sep 23, 2016

If this affects only some clients, you might want to check if the connection attempts of those clients reach your BigIP at all. I would start by doing a 

tcpdump -i clientside-vlan host vip-ip and host client-ip and port 22
. If you can see the connections arrive, the problem is probably in the big-IP config (limited source IPs, VLAN-allow settings, iRules...). If you do not see any packets arrive on your side, I'd check the client and/or intermediate devices (e.g. firewalls).