ping question

[ann kok]

Hi all

I ping from redhat to cisco router and freebsd router
but I don't understand ttl (time to live)

Cisco router has ttl=251 and freebsd router has 58
Does it set by the router itself?
Can I change it in freebsd?

Thank you

64 bytes from 212.223.x.193: icmp_seq=1151 ttl=251
time=100 ms
64 bytes from 212.223.x.193: icmp_seq=1152 ttl=251
time=103 ms
64 bytes from 212.223.x.193: icmp_seq=1153 ttl=251
time=104 ms
64 bytes from 212.223.x.193: icmp_seq=1154 ttl=251
time=106 ms

64 bytes from 212.x.254.4: icmp_seq=1182 ttl=58
time=105 ms
64 bytes from 212.x.254.4: icmp_seq=1183 ttl=58
time=105 ms
64 bytes from 212.x.254.4: icmp_seq=1184 ttl=58
time=104 ms
64 bytes from 212.x.254.4: icmp_seq=1185 ttl=58
time=108 ms

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